CN215307292U

CN215307292U - Heat-storage wireless foot warmer

Info

Publication number: CN215307292U
Application number: CN202121418783.7U
Authority: CN
Inventors: 匡柳
Original assignee: Ningbo Firstep Electric Appliance Co ltd
Current assignee: Ningbo Firstep Electric Appliance Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-28
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a heat-storage wireless foot warmer, which comprises a base and a foot pad assembly, wherein the base is provided with a foot pad; the base comprises a shell, a heat insulation material filled in the shell and at least one phase change heat storage unit embedded in the heat insulation material; the phase-change heat storage unit comprises a metal shell, a phase-change heat storage material filled in the metal shell and a heating body for heating the phase-change heat storage material; the foot pad assembly is arranged on the base and can adjust the contact area between the foot pad assembly and the base according to the stress so as to change the heat transfer speed between the foot pad assembly and the base. The foot warmer is simple and reasonable in structure, and under the condition of power-on heating, the phase change heat storage material of the phase change heat storage unit can absorb and store a large amount of heat generated by the heating body and stably release the heat under the condition of power-off use, so that the foot warmer is wirelessly used; meanwhile, the treading force of the foot pad assembly is controlled to adjust the heat transfer speed, so that the purpose of controlling the temperature of the foot warmer is achieved.

Description

Heat-storage wireless foot warmer

Technical Field

The utility model relates to the technical field of foot warmers, in particular to a heat storage type wireless foot warmer.

Background

The foot warmer has been widely used as a heating tool, but the conventional foot warmer depends on continuous power supply because the heat energy required by the foot warmer is large and needs continuous heat energy supplement, so the use of the conventional foot warmer is limited to the occasion with continuous power supply. Under the condition of no power supply or mobile use requirements, the traditional foot warmer cannot play the heating function, and has improved space.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a heat-storage type wireless foot warmer, wherein under the condition of power-on heating, a phase-change heat storage material of a phase-change heat storage unit can absorb and store a large amount of heat generated by a heating body and stably release the heat under the condition of power-off use, so that the wireless use of the foot warmer is realized; meanwhile, the treading force of the foot pad assembly is controlled to adjust the heat transfer speed, so that the purpose of controlling the temperature of the foot warmer is achieved.

In order to achieve the above object, the present invention provides a heat storage wireless foot warmer, comprising a base and a foot pad assembly;

the base comprises a shell, a heat insulation material filled in the shell and at least one phase change heat storage unit embedded in the heat insulation material;

the phase-change heat storage unit comprises a metal shell, a phase-change heat storage material filled in the metal shell and a heating body used for heating the phase-change heat storage material and/or the metal shell;

the foot pad assembly is arranged on the base and can adjust the contact area between the foot pad assembly and the base according to the stress so as to change the heat transfer speed between the foot pad assembly and the base.

Further setting the following steps: the upper surface of casing is sunken to be formed with the cavity, the spacing of callus on the sole subassembly slidable is installed in the cavity of casing.

Further setting the following steps: the callus on sole subassembly includes first backing plate and contradicts and connect a plurality of springs between the upper surface of first backing plate and casing.

Further setting the following steps: the foot pad assembly comprises a cover body structure, a second base plate and a plurality of heat conducting balls, wherein the second base plate can slide along the wall of the concave cavity, and the heat conducting balls are arranged in a cavity formed by the second base plate and the concave cavity in a matched mode.

Further setting the following steps: and a guide notch is formed on the inner surface of the second cushion plate corresponding to the opening edge of the second cushion plate.

Further setting the following steps: the base is provided with a heat preservation sheath, the heat preservation sheath is provided with at least one stretching-in opening.

Further setting the following steps: the phase-change heat storage material is eutectic phase-change molten salt.

Compared with the prior art, the foot warmer is simple and reasonable in structure, and under the condition of power-on heating, the phase change heat storage material of the phase change heat storage unit can absorb and store a large amount of heat generated by the heating body and stably release the heat under the condition of power-off use, so that the foot warmer can be wirelessly used in the power-off state; meanwhile, the treading force of the foot pad assembly is controlled to adjust the heat transfer speed, so that the purpose of controlling the temperature of the warm foot is achieved.

Drawings

FIG. 1 is a cross-sectional view of a heat-storage wireless foot warmer according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a heat-storage wireless foot warmer of the present invention.

The following reference numerals are marked thereon in conjunction with the accompanying drawings:

1. a base; 11. a housing; 111. a concave cavity; 12. a thermal insulation material; 13. a phase change heat storage unit; 131. a metal housing; 132. a phase change heat storage material; 133. a heating element; 2. a foot pad assembly; 21. a first backing plate; 22. a spring; 23. a second backing plate; 231. a guide cut; 24. a heat conducting ball; 3. a heat-insulating sheath; 31. and (4) extending into the opening.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

The heat storage type wireless foot warmer comprises a base 1, a foot pad assembly 2 and a heat insulation sheath 3, wherein a phase change heat storage unit 13 is arranged in the base 1, and the phase change heat storage unit 13 can absorb and store a large amount of heat under the condition of power-on heating and stably release the heat under the condition of power-off use, so that the power-off wireless use of the foot warmer can be realized; the foot pad component 2 is arranged on the base 1 and can change the contact area between the foot pad component and the base 1 according to the stress so as to change the heat transfer speed between the foot pad component and the base 1, thus the effect of controlling the temperature of the warm foot can be achieved by changing the treading force of the foot; the heat preservation sheath 3 cup joints on base 1 and wraps up callus on the sole subassembly 2, and the upper end of this heat preservation sheath 3 is seted up at least one and is supplied the foot to stretch into its inside income mouth 31 that stretches into, and this heat preservation sheath 3 can effectively reach the heat preservation, avoid the effect that the heat scatters and disappears, prolongs the live time of foot warmer.

Specifically, the base 1 includes a casing 11, a heat insulating material 12 filled in the casing 11, and at least one phase change heat storage unit 13 embedded in the heat insulating material 12, where the phase change heat storage unit 13 includes a metal shell 131, a phase change heat storage material 132 filled in the metal shell 131, and a heating unit 133 for heating the phase change heat storage material 132 and/or the metal shell 131, and the phase change heat storage material 132 is preferably eutectic phase change molten salt; under the condition of power-on heating, the eutectic phase change molten salt can absorb and store a large amount of heat generated by the heating element 133 and stably release the heat under the condition of power-off use, and the eutectic phase change molten salt can undergo phase change in the processes of heat absorption and heat release, and specifically comprises the following steps: when the eutectic phase change molten salt is heated, and the temperature of the eutectic phase change molten salt is higher than the temperature of a phase change point, the eutectic phase change molten salt is subjected to phase change and is converted from a solid state to a liquid state, and in the phase change process, the eutectic phase change molten salt absorbs and stores a large amount of heat, and meanwhile, the temperature of the eutectic phase change molten salt is basically kept unchanged; when the heating is completed for use, the temperature of the eutectic phase change molten salt is lower than the phase change temperature so as to carry out reverse phase change and condense from liquid to solid, and in the reverse phase change process, the eutectic phase change molten salt can continuously and stably release heat.

In some embodiments, the foot pad assembly 2, as shown in fig. 1, includes a first pad 21 and a plurality of springs 22 connected between the first pad 21 and the upper surface of the housing 11 in an abutting manner, preferably, a cavity 111 is formed on the upper surface of the housing 11 in a recessed manner, the first pad 21 is slidably and limitedly mounted in the cavity 111, a groove is disposed on the lower surface of the first pad 21, the spring 22 is accommodated between the groove and the upper surface of the housing 11, so that the first pad 21 can slide in the cavity 111 by changing the force of the foot stepping on the first pad 21, thereby changing the contact area between the first pad 21 and the base 1, when the first pad 21 is stepped on the bottom of the cavity 111 to contact the surfaces of the two, the contact area between the two is the largest, the heat transfer rate is the highest, so that the tread surface can be heated rapidly, otherwise, the temperature is heated slowly, the heat insulation material 12 of the base 1 and the foot pad assembly 2 are matched to keep the treading surface at the effective temperature of 35-55 ℃ for a long time.

In some embodiments, the footpad assembly 2, as shown in FIG. 2, includes a second plate 23 and a plurality of thermally conductive balls 24, preferably ceramic balls 24; a concave cavity 111 is formed on the upper surface of the shell 11 in a concave manner, the second base plate 23 is of a cover body structure and is mounted in the concave cavity 111 in a sliding and limiting manner, and the heat conducting balls 24 are loosely arranged in an accommodating cavity formed by matching the second base plate 23 and the concave cavity 111; the volume of the accommodating cavity can be changed by sliding the second backing plate 23 along the concave cavity 111, so that the arrangement looseness of the heat conducting balls 24 in the accommodating cavity is changed, and the contact area and the heat transfer capacity among the heat conducting balls 24 are changed; preferably, a guide notch 231 is formed on the inner surface of the second backing plate 23 corresponding to the opening edge thereof, so that the guide notch 231 can shovel the heat conductor to move towards the middle of the accommodating cavity in the downward sliding process of the second backing plate 23, and the arrangement of the heat conducting balls 24 in the accommodating cavity is tighter, thereby achieving the effect of increasing the contact area and the heat transfer capacity between the heat conducting balls 24; the heat insulation material 12 of the base 1 and the foot pad assembly 2 are matched to keep the treading surface at the effective temperature of 35-55 ℃ for a long time.

The above disclosure is only an example of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art should fall within the scope of the present invention.

Claims

1. A heat storage type wireless foot warmer is characterized by comprising a base and a foot pad assembly;

2. The heat-storage wireless foot warmer according to claim 1, wherein the upper surface of the housing is recessed to form a cavity, and the foot pad assembly is slidably mounted in the cavity of the housing.

3. The heat-storage wireless foot warmer of claim 1 or 2, wherein the foot pad assembly comprises a first pad and a plurality of springs connected between the first pad and the upper surface of the shell in an abutting manner.

4. The heat-storage wireless foot warmer according to claim 2, wherein the foot pad assembly comprises a second pad plate which is of a cover body structure and can slide along the wall of the cavity, and a plurality of heat-conducting balls which are arranged in a cavity formed by the second pad plate and the cavity in a matched mode.

5. The heat-storage wireless foot warmer according to claim 4, wherein the second pad has a guiding notch formed on the inner surface corresponding to the opening edge.

6. The heat-storage wireless foot warmer according to claim 1, wherein the base is provided with a heat-insulating sheath, and the heat-insulating sheath is provided with at least one inlet.

7. The heat-storage wireless foot warmer of claim 1, wherein the phase-change heat storage material is eutectic phase-change molten salt.