DE102014000941B3 - Heating device with a latent heat storage medium and use of a latent heat storage medium - Google Patents

Abstract

The invention relates to a heating device (1), in particular a hot water bottle or a heat pad, for at least indirectly bringing into contact with a living being. As heating device comprises at least one receiving space (2) for holding a flowable material (4), wherein the receiving space (2) at least partially formed by a flexible wall (6), wherein the flexible wall (6) at least indirectly in contact with the living being can be brought. According to the invention, a latent heat storage means (8) is provided, wherein the latent heat storage means is arranged such that at least temporarily by the latent heat storage means (8) a temperature of the flowable material (4) is effected, wherein the latent heat storage means (8) comprises a phase change material, in particular sodium acetate, wherein the phase change material absorbs energy in an endothermic state change due to heating and emits energy in the form of heat in an exothermic state change.

Description

The present invention relates according to claims 1 and 2 to a heating device, in particular to a hot water bottle or a heat pad for at least indirectly bringing into contact with a living being and according to claim 7 and 8 to a latent heat storage medium.

Heating devices, such as hot water bottles and grain pillows, have been around for many years. However, such heat devices always have the problem that they can be filled too hot by the users or are heated too much by a heater such as a furnace. The high heat causes burns of the skin. To prevent burns, the "Hot Water Bottles Safety Standard BS 1970" was introduced, which was renewed in 2012 by the "Hot Water Bottles Safety Standard BS 1970: 2012". According to this standard, hot-water bottles with a certain wall thickness must be produced in order to limit heat transfer. Furthermore, according to this standard, hot-water bottles must be provided with the instruction that no boiling water may be introduced into them.

The publication US 5,069,208 A discloses a therapeutic device for heat treatment. The device comprises a plurality of cells, each consisting of a mass of thermally active material and having a state change at a predetermined temperature. Furthermore, the device has a closed, impermeable, thin-walled envelope, which contains the mentioned mass. In this case, the majority of the cells form an arrangement of separate cells, which are embedded in a fluidic, non-gaseous heat transfer medium which, as a function, has the transfer of heat. The heat transfer medium and the cells are contained in a soft, closed package.

The publication GB 2 436 801 A discloses a bed heating system using at least one reheatable, permanently sealed, portable heat source for warming a bed by heat dissipation. The heat is given off by an internal mass of heated material, the material consisting essentially of water. The bed heating system in this case comprises a bed-side device with at least one reheat station, which comprises a temperature-limited heating device for electrically heating a portable heat source. Each reheating station includes means for detecting the temperature of the portable heat source, means for generating a form of energy for transmission to the interior of the portable heat source, and means for stopping the power supply when the temperature exceeds a predetermined temperature such that the portable heat source conveniently heats can be and later reheated.

Furthermore, there are protective inventions in which the inventors have accepted the problem of incipient burns. For example, z. B. the German utility model DE 77 07 739 U the different design of the walls of the hot water bottle, which heat is transferred to different degrees. Further, the document discloses DE 85 04 306 U1 a hot water bottle, in which on one side an insulating layer is arranged. Further, the document discloses DE 691 01 711 T2 a hot water bottle in which the sides of the hot water bottle are flocked differently.

All approaches mentioned so far are inadequate, as the majority of users always heat the water for the hot water bottle with a kettle. Since kettles usually do not turn off until the water boils, most people use the freshly cooked water to load in the hot water bottle, which can make it dangerously hot.

On the other hand, many users try to make sure that the water stays warm for as long as possible in order to use the hot water bottle as long as possible. As a result, another problem of the known hot water bottles can be seen. Known hot water bottles have a substantially continuous cooling rate, i. That is, the hot water bottle over the total useful life is mostly too hot or too cold.

It is therefore the object of the present invention to provide a heating device which mitigates the aforementioned problems or creates an increase in comfort when using such a heating device.

The aforementioned object is achieved by a heating device, in particular a hot water bottle or a heat pad, at least indirectly bring into contact with a living being, in particular a human and / or an animal. The heating device preferably comprises at least one receiving space for holding a flowable material, wherein the receiving space is at least partially formed by a flexible wall, wherein the flexible wall is at least indirectly brought into contact with the living being in contact. According to the invention, at least or precisely one latent heat storage medium is provided or comprises the heating device at least or precisely a latent heat storage means, wherein the latent heat storage means is arranged such that at least temporarily by the latent heat storage means a temperature of the flowable material is effected, the latent heat storage means comprises a phase change material, in particular sodium acetate, wherein the phase change material absorbs energy in an endothermic state change due to heating and emits energy in the form of heat during an exothermic change of state.

This solution is advantageous because on the one hand excess heat is withdrawn from the flowable material initially for later use, whereby the risk of burns is reduced and on the other hand by the later release of the stored heat comfort improvement is achieved. The phase change material causes by the partial or complete endothermic state change thus a cooling of the flowable material, wherein the heat in a later period is preferably constant or preferably substantially constant delivered to the flowable material and / or to the wall.

The temperature of the flowable material may mean a cooling of the flowable material or take place during the cooling of the flowable material, wherein the temperature of the flowable material, which may also be a material mixture or mixture, preferably at least supplying heat to the flowable material Material, wherein the heat preferably causes the heating of the flowable material, maintaining the temperature of the flowable material or reducing a cooling rate of the flowable material.

In other words, the latent heat storage medium comprises a phase change material, in particular sodium acetate, wherein the phase change material absorbs energy at a first state change as a result of heating and emits energy in the form of heat in a second state change. Phase change materials preferably comprise sodium acetate trihydrate or sodium acetate or paraffins or mixtures of these materials. Sodium acetate trihydrate preferably has a melting temperature of substantially or exactly 58 ° C, paraffin, in particular hard paraffin, preferably has a melting temperature of about or exactly 60 ° C.

According to the present invention, the latent heat storage medium is designed such that with a defined amount of defined temperature flowable material, the phase change material completely undergoes the endothermic state change, wherein preferably also the cooling rate of the flowable material is defined. This embodiment is advantageous because a complete state change results in a stable state in which the heat absorbed is stored and retrievable at any time.

Furthermore, according to the present invention, the latent heat storage means on an actuating means, in particular a preferably having at least one metal crackpot frog, for triggering the exothermic state change.

Is z. B. the temperature of the flowable material under the phase transition or in the exothermic state change resulting temperature falls, z. B. to room temperature, the exothermic change in state of the phase change material can be triggered by means of the actuating means, whereby a heating of the flowable material is effected.

The actuating means is preferably partially or completely surrounded by phase change material or is preferably in direct contact with it.

According to a variant of the present invention, the latent heat storage agent is designed such that at a defined amount of defined tempered flowable material, the phase change material undergoes the endothermic state change partially, wherein the phase change material is provided in an amount or mass that at a full filling of the hot water bottle with flowable Material having a temperature between the melting temperature of the phase change material and 95 ° C, at an ambient temperature of 20 ° C, the endothermic state change only partially experiences.

With a quantity A of flowable material, in particular water, a temperature T of the flowable material and preferably a cooling rate R of the flowable material, the latent heat storage medium thus preferably has a three-dimensional outer shape and preferably a quantity of phase change material arranged therein, the amount of phase change material depending is selected from the three-dimensional outer shape of the latent heat storage medium such that the phase change material undergoes the endothermic state change only partially. In this case, z. For example, the rule that for the same amount A of flowable material, the same temperature T, and preferably the same cooling rate R with increasing surface area of the three-dimensional external shape of the latent heat storage medium, the amount of phase change material must also increase.

When cooling the flowable material z. B. below the temperature at which the phase change material, the phase or state changes, carried by the phase change material, a heat release and thereby reversing the partially completed endothermic state change. The phase change material gives in the reversal of the previously absorbed energy preferably substantially or completely in the form of heat to the flowable material.

Phase change material that has not completely changed phase, preferably tends to reverse the partial phase change, thereby giving off the phase change material heat. Phase change material, however, has completely changed the phase, the phase or state reached only after a trigger event, the z. B. can be generated or started by means of the actuating element.

This embodiment thus advantageously constitutes a type of heat buffer.

In the case of a heating device, which is fed to the flowable material tempered, such. As in the case of a hot water bottle, the phase change material initially absorbs heat from the flowable material, whereby the flowable material is cooled down. Since the temperature of the heated flowable material is often not adjusted by the users of the heating device to an ideal temperature (eg 50 ° -60 ° C.), but often is significantly hotter (eg 95 ° C.), injuries are easily obtained or burns of the skin. By cooling down the temperature of the flowable material by means of the phase change material storage of the excess heat takes place. The stored heat is then released from the phase change material again as soon as the temperature of the flowable material falls below a threshold temperature. The heat emitted by the phase change material then preferably causes the temperature of the flowable material to be maintained substantially constant in the region of the threshold temperature or the heat given off by the phase change material at least causes the flowable material to cool more slowly.

According to a further preferred embodiment of the present invention, a closable supply and discharge opening for supplying the, in particular heated, flowable material to the receiving space and for discharging the, in particular cooled, flowable material from the receiving space formed on the receiving space.

This embodiment is advantageous because the flowable material can be heated or tempered outside the heating device.

According to a further preferred embodiment of the present invention, the receiving space is formed encapsulated such that the flowable material remains permanently in the receiving space. This particularly preferably means that the flowable material can be removed from the receiving space only by damaging or destroying the receiving space. According to this embodiment, in particular, no supply and / or discharge opening is provided. This embodiment is advantageous because the latent heat storage medium and the flowable material at the same time by the same heat source, for. As an oven, a microwave oven, a saucepan, etc. is heated. There is thus no need for elaborate exchange operations and the absence of a closure means can not close it in an inadequate manner, thereby providing a high degree of safety during use.

According to a further preferred embodiment of the present invention, the at least or exactly one latent heat storage medium is arranged within the receiving space or on the wall of the receiving space or is formed as part of the wall.

The latent heat storage medium is preferably arranged in the region of the wall or on the wall, in particular within the receiving space or outside the receiving space.

The present invention also relates to a heating device, in particular a hot water bottle or a heat pad, for at least indirectly bringing into contact with a living being, which preferably comprises at least one receiving space for holding a flowable material, wherein the receiving space formed at least in sections by a flexible wall wherein the flexible wall is at least indirectly brought into contact with the living being, wherein the latent heat storage means is arranged such that at least temporarily by the latent heat storage means a temperature of the flowable material is effected and wherein the latent heat storage means formed as a thermochemical heat storage is.

Furthermore, a manufacturing method for producing a heating device, in particular a hot water bottle or a heat pad, for at least indirectly in contact with a living being disclosed. The manufacturing method comprises Preferably, at least the steps of providing two blank plates, wherein the wall of the hot water bottle are formed by the blank plates, arranging at least one latent heat storage medium between the blank plates, wherein the latent heat storage medium comprises a phase change material, wherein the phase change material absorbs energy in an endothermic state change and in an exothermic state change Energy in the form of heat gives off, connecting the blank plates together, in particular by means of vulcanization. However, it is also conceivable that the manufacturing method preferably at least the steps of introducing a thermoplastic blank into a blow mold, forming the hot water bottle by the introduction of air into the blank, the insertion of a latent heat storage medium in the interior of the mold produced by an opening of the hot water bottle wherein the latent heat storage medium comprises a phase change material, wherein the phase change material absorbs energy in an endothermic state change and releases energy in the form of heat in an exothermic state change, the insertion of a threaded inlet and outlet means in the opening of the hot water bottle and the joining of the Including inlet and outlet means with the hot water bottle.

This production method is advantageous because for the first time a way of producing a hot water bottle with integrated latent heat storage medium is provided.

Furthermore, the present invention relates to a latent heat storage means for use as a retrofit element for hot water bottles or on a hot-latent heat storage medium for introduction into an at least partially and preferably for the most part of rubber or plastic, in particular PVC, existing hot water bottle, wherein the hot water bottle has an opening which an opening diameter of less than or equal to 30 mm, in particular less than or equal to 29 mm, in particular less than or equal to 28 mm, in particular less than or equal to 27 mm, in particular less than or equal to 26 mm, in particular less than or equal to 25 mm, has, at least 0.4 Liters of water, in particular at least 0.5 liters, in particular at least 0.75 liters, in particular at least 1 liter, in particular at least 1.2 liters, in particular at least 1.5 liters, in particular at least 1.75 liters, in particular at least 2 liters and at least one wall thickness of 1 mm, in particular of mindes at least 1.1 mm, in particular of at least 1.2 mm, in particular of at least 1.3 mm, in particular of at least 1.4 mm, in particular of at least 1.5 mm. The hot-bottle latent heat storage medium comprises at least one wall defining an outer three-dimensional shape of the hot-bottle latent heat storage medium, wherein the wall bounds a Vorhalteraum in which a phase change material is, wherein the phase change material absorbs energy in an endothermic state change and at an exothermic state change energy in the form of heat, wherein the phase change material has a melting temperature of more than 36 ° C, in particular more than 40 ° C, in particular more than 42 ° C, in particular more than 45 ° C, in particular more than 47 ° C, in particular of more than 50 ° C, in particular of more than 52 ° C, in particular of more than 55 ° C, in particular of more than 56 ° C, and is provided in an amount or mass that in a Full filling of the hot water bottle with 95 ° C hot water at an ambient temperature of 20 ° C, the endothermic change in state nu r is partially experienced, wherein the phase change material is provided in an amount or mass that fully undergoes the endothermic change of state at a full filling of the hot water bottle with 95 ° C hot water when an actuating means is provided for triggering the exothermic state change.

Preferably, the exothermic change of state is followed, particularly preferably in terms of time, directly or essentially directly to the endothermic change of state.

The latent heat storage medium, in particular for hot water bottles, preferably has a film-like housing or shell, d. h., That the wall of the latent heat storage medium is preferably flexible. Particularly preferably, the wall or enclosure of the latent heat storage medium or the latent heat storage medium of a polymer material, in particular from a liquid-tight, in particular at least at ambient pressure, and temperature stable, in particular to at least 100 ° C, preferably to or substantially to 110 ° C, preferably to or substantially to 120 ° C, preferably to or substantially to 130 ° C, preferably to or substantially to 140 ° C, preferably to or substantially to 150 ° C, preferably to or substantially to 160 ° C, preferably to or substantially to 170 ° C, preferably to or substantially to 200 ° C, preferably to or substantially to 250 ° C, preferably to or substantially to 300 ° C, preferably to or substantially to 350 ° C, polymeric material.

The latent heat storage medium can preferably also be formed from a plurality of individual physically separate or interconnected receiving spaces each filled with a phase change material and preferably foil-like. It is here preferred that the entire phase change material is not converted by the hot water heating due to the endothermic reaction and thereby caused complete state change in a stable state, but preferably always automatically by means of an exothermic reaction, the initial state, which was present before heating, accept again. Namely, if the phase change material completely undergoes a state change by the endothermic reaction, then the phase change material could not be caused to exothermic state change without an external trip. The latent heat storage medium must therefore preferably be designed such that, in an initial state in which the endothermic reaction is possible or still possible, it can be introduced into a hot water bottle. Since a phase change material generally assumes a solid state in this state, certain geometric conditions are required for introduction into the hot water bottle; in particular, the latent heat storage medium must fit through the opening of the hot water bottle. Due to the limited opening way of a hot water bottle, however, the latent heat storage medium must have a minimum length or minimum amount of phase change material in order not to be completely converted by the hot water due to an endothermic reaction in the addressed stable state. For example, there is a latent heat storage agent having sodium acetate as a phase change material. The phase change material must be at least partially in a crystallized form prior to introduction into the hot-water bottle for either the exothermic reaction to proceed or to complete. Should the phase change material be in the completely liquid state, ie have completely converted the endothermic state change, then a triggering of the exothermic state change could no longer be effected if the latent heat storage medium was incorporated into the hot water bottle. The latent heat storage medium with the at least partially and preferably fully crystallized phase change material is introduced through the opening of the hot water bottle in the hot water bottle. As a result of the hot water supply in the hot water bottle, the phase change material melts partially under the absorption of heat (heat of fusion). It is essential here that the phase change material does not melt completely and therefore the latent heat storage medium has the corresponding shape, in particular has a corresponding thickness, and / or the phase change material is provided in the corresponding quantity or mass. By absorbing the heat of fusion, the temperature of the supplied water is cooled. If the temperature of the water supplied falls below a certain threshold temperature, in particular the solidification temperature of the phase change material, then the phase change material begins to solidify automatically and in the process releases heat to the water or the wall of the hot water bottle.

Furthermore, the thread of the hot water bottle in the axial direction preferably extends at least 3 mm and particularly preferably at least 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm or more than 10 mm. The latent heat storage medium is preferably also designed such that it can not be removed from the hot water bottle without the aid of a tool or without being destroyed.

The latent heat storage agent is particularly preferably suitable as a retrofit for retrofitting hot water bottles. Preferably, the latent heat storage medium is formed tubular. The tube-shaped latent heat storage means preferably has sections in a cross-section orthogonal to the longitudinal direction of the tubular formed latent heat storage means in particular a round shape. The diameter of the latent heat storage medium is preferably less than or equal to 30 mm, in particular less than or equal to 29 mm, in particular less than or equal to 28 mm, in particular less than or equal to 27 mm, in particular less than or equal to 26 mm, in particular less than or equal to 25 mm, in particular smaller or equal to 24 mm, in particular less than or equal to 23 mm, in particular less than or equal to 22 mm, in particular less than or equal to 21 mm, in particular less than or equal to 20 mm, The tubular formed latent heat storage means extends in its axial direction or in its longitudinal direction preferably exactly at least or maximum 50 mm, accurate, at least or maximum 60 mm, accurate, at least or maximum 70 mm, accurate, minimum or maximum 80 mm, accurate, minimum or maximum 90 mm, accurate, minimum or maximum 100 mm, accurate, at least or maximum 110 mm, accurate, minimum or maximum 120 mm, accurate, minimum or maximum 130 mm, accurate, minimum or m aximum 140 mm, accurate, minimum or maximum 150 mm, accurate, minimum or maximum 160 mm, accurate, minimum or maximum 170 mm, accurate, minimum or maximum 180 mm, accurate, minimum or maximum 190 mm, accurate, minimum or maximum 200 mm, exactly, at least or maximum 210 mm, exactly, at least or maximum 250 mm, accurate, at least or maximum 300 mm, accurate, at least or maximum 3500 mm, accurate, minimum or maximum 4000 mm.

The invention may also relate to a hot water bottle with at least one latent heat storage agent.

For the purposes of the present invention may be understood as flowable material preferably a fluid, in particular a liquid, a bulk material or a mixture of bulk material and fluid. In this case, a preferred fluid is water, with oil or other liquids or gels or fats or cream alternatively conceivable. Furthermore, bulk materials are preferably cores or seeds. Cores can hereby z. As cherry, grape seeds, core mixtures, etc. be. Seeds can hereby z. B. flaxseed. Furthermore, for the purposes of the present invention, sand, earth, stones, moor, etc. are also considered as flowable materials.

The use of the words "substantially" preferably defines a deviation in the range of 1% -30%, in particular of 1% -20%, in particular of 1% -10, in all cases in which these words are used in the context of the present invention %, in particular from 1% -5%, in particular from 1% -2%, of the definition that would be given without the use of these words.

Individual or all representations of the figures described below are preferably to be regarded as construction drawings, d. H. the dimensions, proportions, functional relationships and / or arrangements resulting from the figure or figures preferably correspond exactly or preferably substantially to those of the device according to the invention or of the product according to the invention.

Further advantages, objects and features of the present invention will be explained with reference to the following description of appended drawings, in which exemplary heating devices according to the invention are shown. Elements of the devices and methods according to the invention, which in the figures at least substantially coincide with respect to their function, may in this case be identified by the same reference symbols, these components or elements not having to be numbered or explained in all figures. The invention will be described purely by way of example with reference to the accompanying drawings.

Show:

1 a sectional view of a heating device according to a preferred embodiment of the present invention;

2a a sectional view of a heating device according to another preferred embodiment of the present invention;

2 B and 2c Sectional views of various heating device according to a preferred embodiment of the present invention, wherein the individual heating devices have different latent heat storage means or different numbers of latent heat storage means;

3a and 3b Sectional views of various heating device according to a preferred embodiment of the present invention,

4a a sectional view of a heating device according to another preferred embodiment of the present invention;

4b a top view of the in 4a shown heating device;

4c a sectional view of a heating device according to another preferred embodiment of the present invention;

4d a top view of the in 4c shown heating device;

5a and 5b Sectional views of various heating device according to another preferred embodiment of the present invention,

5c a plan view of the in the 5a and 5b shown heating device;

5d a back view of the in the 5a to 5c shown heating devices and

6 a plan view of an at least partially transparent heating device according to another preferred embodiment of the present invention.

1 shows a heating device according to the invention 1 , The heating device 1 is preferably formed as a heat pad. The heating device 1 has a recording room 2 up, through a wall 6 is formed or limited. The wall 6 This may be made of rubber, a polymer, in particular PVC, or of a textile material, in particular a knitted fabric. The recording room 2 is with a flowable material 4 at least partially filled. The flowable material 4 is preferably a bulk material, such as. As sand, cores, stones, or a fluid such. As water, bog or a gel, etc .. It is revealed here that the wall of the heating device 1 is chosen or formed such that they are the respective flowable material 4 can hold substantially lossless or lossless. In the recording room 2 is next to the flowable material 4 or surrounded by the flowable material 4 at least one Latent heat storage materials 8th intended. The at least one latent heat storage agent 8th can loose here in the receiving space 2 may be provided or arranged or it may by means of a fastening against the wall 6 be positioned or on the wall 6 be arranged or fixed. The reference number 9 schematically indicates the interior of the latent heat storage medium, which is bounded by a preferably foil-like wall. In the interior 9 the latent heat storage medium is arranged a phase change material.

In 2a is a sectional view of a preferably designed as a hot water heater 1 shown. The heating device 1 in this case has at least or exactly one feed and discharge opening 12 on. The feed and discharge opening 12 is hereby preferably by means of a closure 14 closable. The closure 14 this can be depending on the configuration of the feed and discharge opening 12 be formed with an external thread or an internal thread or by means of any other sealing sealing concept.

In the 2 B and 2c are sectional views shown, wherein the sections are guided in the YZ plane. The presentation 2 B can be a latent heat storage agent 8th within the recording room 2 remove. The representation 2c shows that within the recording room 2 several latent heat storage agents 8th are arranged. It can be deduced thereby, that in the 2c shown latent heat storage agent 8th together have a larger surface than that in 2 B shown latent heat storage agent 8th , where in 2 B shown latent heat storage agent 8th at an equally long extension in the X direction or in the longitudinal direction of the heating device 1 may have or have a larger amount of phase change material.

In the in 3a and 3b Illustrations shown have the heating devices 1 one funnel each 15 for simplified filling of a flowable substance. However, it is conceivable here that the illustrated heating devices 1 even without such a funnel 15 be formed. Furthermore, it is conceivable that all the heating devices shown in the further figures 1 which has a feed and discharge opening 12 or an inlet and outlet means 12 have such a funnel 15 can have. Furthermore, the individual illustrated supply and discharge openings 12 , which are presented in different versions are to be regarded as purely exemplary.

Of the 3a can also be seen that within the recording room 2 several latent heat storage agents 8th are provided. It is thus conceivable that within a recording room 2 at least or exactly two, at least or exactly three, at least or exactly four, at least or exactly five, at least or exactly six, at least or exactly seven latent heat storage agents 8th can be provided or brought in or can be arranged.

In 3b an embodiment is shown according to which the latent heat storage medium 8th spherical or substantially spherical, in particular disc-shaped or spherical, is formed.

In 4a is a heating device 1 shown, which is preferably designed as a hot water bottle. The heating device 1 here has at least one latent heat storage agent 8th on. The latent heat storage agent 8th has an actuating means 10 , in particular a metal spring or a snapper frog, for triggering the exothermic change in state of the phase change material. In this embodiment, the actuating means is preferred 10 and / or the latent heat storage agent 8th always defined with respect to a wall part 6 the heating device 1 , in particular with respect to one on the wall part 6 attached or provided mark 16 (see. 4b ).

It is also conceivable that one or at least one latent heat storage medium 8th with an actuating means 10 within a heating device designed as a heat pad 1 is provided. Preferably, the actuating means 10 also defined in this case with respect to a wall part 6 the heating device 1 arranged.

In 4b is a plan view of a heating device 1 shown. It can be seen from this illustration that on the wall 6 a mark 16 is provided. The mark 16 here preferably shows the position or substantially the position of the actuating element 10 at.

In the 4c and 4d is one to the 4a and 4b shown analogous example, wherein in the 4c and 4d more latent heat storage 8th and therefore more marks 16 are shown. It is hereby preferably conceivable that the number of markings 16 with the number of actuators 10 correlated.

In the 5a an embodiment is shown in a sectional view, according to the part of the latent heat storage means 8th outside the recording room 2 is arranged. In the outside of the recording room 2 arranged region of the latent heat storage medium 8th is preferably an actuating means 10 arranged. Preferably, the outside of the receiving space 2 formed proportion of the latent heat storage medium 8th so opposite to the inside of the recording room 2 arranged proportion of the latent heat storage medium 8th delimited that the actuating means 10 it prefers exclusively outside of the recording room 2 located. At least the part of the latent heat storage agent is preferred 8th in which the actuating means 10 is arranged, partially or completely transparent. Furthermore, the outside of the recording room 2 arranged proportion of the latent heat storage medium 8th so from within the recording room 2 proportion of the latent heat storage medium 8th delimited that the exothermic state change and the endothermic state change of the interior 9 of the latent heat storage medium 8th vorhaltenen phase change material can preferably be carried out completely. Furthermore, the reference numeral 18 a demarcation as in 5a shown z. B. may have a gap or - as in 5b shown - eg. B. can be formed by a kind of perforation.

Furthermore, it is conceivable that a heating device 1 several latent heat storage agents 8th may be arranged, which are arranged so that they are closed when the heating device 1 be touched by a user. Preferably, a heating device designed in particular as a hot water bottle 1 a plurality, in particular at least, exactly or maximally 2, at least, exactly or maximally 3, at least, exactly or maximally 4, at least, exactly or maximally 5, at least, exactly or maximally 6 latent heat storage means 8th on, the with closed heating device 1 are touchable by a user or are from the recording room 2 extend out.

5c shows a plan view of a heating device according to the invention 1 , wherein preferably in the range of latent heat storage agent 8th or preferably on the latent heat storage medium 8th a mark 16 for displaying the position of the actuating means 10 is provided. However, it is also conceivable that no mark 16 is necessary, as indicated by the spatial delineation of the area in which the actuating means 10 is directly visible where the actuator 10 is arranged. It is also conceivable that the latent heat storage medium 8th at least partially or locally formed so transparent that it can be seen where the actuating means 10 located.

5d shows a back view of the in the 5a - 5c shown heating device 1 , The reference number 20 hereby denotes a seam which results during the production of the heating device, in particular by a blow mold or during vulcanization, and preferably circumferential.

6 shows a plan view of a at least on the one hand and preferably on both sides at least partially and preferably substantially or particularly preferably completely transparent heating device 1 , Due to the transparency of the wall, it can be seen where the latent heat storage medium 8th and the actuating means disposed therein 10 are located. The latent heat storage agent 8th is preferably also at least on the one hand and preferably formed on both sides at least partially and preferably substantially or particularly preferably completely transparent.

According to the illustrated embodiments, the latent heat storage medium 8th be formed such that at a defined amount of a full filling of the receiving space, defined defined flowable material, in particular water, the endothermic change in state of the phase change material is completely feasible.

According to some of the illustrated embodiments, the latent heat storage medium 8th an actuating means 10 , in particular a preferably having at least one metal crackpot frog, for triggering the exothermic state change.

According to the illustrated embodiments, the latent heat storage medium 8th be formed such that at a defined amount of defined tempered flowable material, in particular water, the endothermic change in state of the phase change material is only partially effected.

LIST OF REFERENCE NUMBERS

1

warming device

2

accommodation space

4

Flowable material

6

Flexible wall

8th

Latent heat storage materials

9

Interior of latent heat storage medium

10

actuating means

12

Feed and discharge opening

14

shutter

15

funnel

16

mark

18

barrier means

X

first direction / length

Y

second direction / depth

Z

third direction / altitude

G

gravity

Claims (8)

Heating device ( 1 ) for at least indirectly bringing into contact with a living being, at least comprising a receiving space ( 2 ) for holding a flowable material ( 4 ) the receiving space ( 2 ) at least in sections by a flexible wall ( 6 ), wherein the flexible wall ( 6 ) is at least indirectly in contact with the living being in contact, characterized in that a latent heat storage medium ( 8th ), wherein the latent heat storage means is arranged such that at least temporarily by the latent heat storage means ( 8th ) a temperature of the flowable material ( 4 ), wherein the latent heat storage medium ( 8th ) has a phase change material, wherein the phase change material absorbs energy in the form of heat during an endothermic state change as a result of heating and emits energy in the form of heat during an exothermic state change, wherein the latent heat storage medium ( 8th ) is formed such that with a defined amount of defined temperature-flowable material, the endothermic state change of the phase change material is completely feasible, wherein the latent heat storage medium ( 8th ) an actuating means ( 10 ) for triggering the exothermic change of state. Heating device ( 1 ) for at least indirectly bringing into contact with a living being, at least comprising a receiving space ( 2 ) for holding a flowable material ( 4 ), the receiving space ( 2 ) at least in sections by a flexible wall ( 6 ), wherein the flexible wall ( 6 ) is at least indirectly brought into contact with the living being, characterized in that a latent heat storage medium ( 8th ), wherein the latent heat storage means is arranged such that at least temporarily by the latent heat storage means ( 8th ) a temperature of the flowable material ( 4 ), wherein the latent heat storage medium ( 8th ) has a phase change material, wherein the phase change material absorbs energy in the form of heat during an endothermic state change as a result of heating and emits energy in the form of heat during an exothermic state change, wherein the latent heat storage medium ( 8th ) is formed such that at a full filling of the receiving space ( 2 ), the defined endothermic state change of the phase change material is only partly effected at defined tempered flowable material. Heating device ( 1 ) according to one of the preceding claims, characterized in that at the receiving space ( 2 ) a closable feed and discharge opening ( 12 ) for supplying the flowable material ( 4 ) to the recording room ( 2 ) and for discharging the flowable material ( 4 ) from the recording room ( 2 ) is formed out. Heating device ( 1 ) according to one of claims 1 to 3, characterized in that the receiving space ( 2 ) is formed encapsulated such that the flowable material ( 4 ) permanently in the receiving space ( 2 ) remains. Heating device ( 1 ) according to claim 3 or claim 4, characterized in that the latent heat storage medium ( 8th ) within the recording room ( 2 ) or on the wall ( 6 ) of the recording room ( 2 ) or as part of the wall ( 6 ) is trained. Heating device ( 1 ) according to claim 1, characterized in that a latent heat storage medium ( 8th ), the latent heat storage medium ( 8th ) is arranged such that at least temporarily by the latent heat storage means ( 8th ) a temperature of the flowable material ( 4 ), wherein the latent heat storage medium ( 8th ) is designed as a thermochemical heat storage. Use of a latent heat storage medium for introduction into an at least partially made of rubber or plastic heating device according to claim 1, having an opening having an opening diameter of less than or equal to 30 mm, at least 0.3 liters of water and at least a wall thickness of 1 mm, at least comprising a wall which defines an outer three-dimensional shape of the hot-bottle latent heat storage medium, wherein through the wall an interior space ( 9 ), in which there is a phase change material, wherein the phase change material absorbs energy in the form of heat during an endothermic change of state and in an exothermic state change, wherein the phase change material has a melting temperature of more than 36 ° C, wherein the phase change material in a Amount or mass is provided which fully undergoes the endothermic change of state with a full filling of the hot water bottle with 95 ° C hot flowable material and an actuating means ( 10 ) is provided for triggering the exothermic state change. Use of a latent heat storage medium for introduction into an at least partially made of rubber or plastic heating device according to claim 2, having an opening which has an opening diameter of less than or equal to 30 mm, can absorb at least 0.3 liters of water and at least a wall thickness of 1 mm comprising, at least comprising a wall which defines an outer three-dimensional shape of the latent heat storage medium, wherein through the wall an interior space ( 9 ), wherein the phase change material absorbs energy in an endothermic state change and emits energy in the form of heat during an exothermic state change, wherein the phase change material has a melting temperature of more than 36 ° C and in an amount or mass is provided, which undergoes a full filling of the hot water bottle with 95 ° C hot water at an ambient temperature of 20 ° C, the endothermic change in state only partially.

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