A defrosting device and a refrigeration appliance

Abstract

The utility model provides a kind of defrosting device and refrigeration equipment belong to defrosting technical field, including solid-state elastic card refrigerating mechanism and heat transfer mechanism.Solid-state elastic card refrigerating mechanism includes first driver and first shape memory alloy, first driver loads first shape memory alloy to release heat, or first driver unloads first shape memory alloy to release cold;Heat transfer mechanism includes the refrigeration cycle loop connected with solid-state elastic card refrigerating mechanism, refrigeration cycle loop is located refrigeration area, and refrigeration cycle loop is built-in fluid heat exchange medium that can be conducted with the heat of first shape memory alloy.This utility model provides a kind of defrosting device, improves energy utilization efficiency, compared with the mode that traditional electric heating relies on heat slow diffusion, heat transfer speed is faster, coverage is more comprehensive, shorten the time required for melting ice and frost, solve the problem of long time defrosting, realize quick defrosting, reduce overall power consumption, meet energy-saving demand.

Description

Technical Field

[0001] This utility model belongs to the field of defrosting technology, and more specifically, relates to a defrosting device and a refrigeration equipment. Background Technology

[0002] In the field of refrigeration, moisture in the refrigerated items and the air will condense into a frost layer on the surface of the evaporator. The frost layer will hinder the heat exchange of the refrigeration pipes, thereby affecting the refrigeration effect, leading to increased energy consumption, and may also shorten the service life of the refrigeration equipment.

[0003] Therefore, refrigeration equipment needs to be defrosted regularly. Traditional defrosting methods involve manual defrosting using machinery, which is inefficient, can easily damage the equipment during the process, and requires personnel to work in low temperatures for extended periods. While automatic defrosting technologies exist, they mostly rely on electric heating to diffuse heat. This method is time-consuming, has low electrothermal conversion rates, consumes a lot of electricity, and is not energy-efficient. Utility Model Content

[0004] The purpose of this invention is to provide a defrosting device that solves the problems of long defrosting time, low electrothermal conversion rate, high power consumption, and lack of energy saving when using electric heating to achieve defrosting.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a defrosting device, comprising: A solid-state spring-loaded cooling mechanism includes a first driver and a first shape memory alloy, wherein the first driver loads the first shape memory alloy to release heat, or the first driver unloads the first shape memory alloy to release cold energy; The heat transfer mechanism includes a refrigeration loop connected to the solid spring-loaded cooling mechanism. The refrigeration loop is located in the cooling zone and has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy. In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into the refrigeration cycle loop to conduct the cold energy to the refrigeration zone; In defrosting mode, the fluid heat exchange medium carries the heat into the refrigeration cycle loop to melt the frost condensed on the refrigeration cycle loop.

[0006] In one possible implementation, the refrigeration cycle loop includes: Multiple refrigeration cycle branches are located in the refrigeration zone, and each refrigeration cycle branch has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy; In the refrigeration operation state, the fluid heat exchange medium carries the cooling energy into multiple refrigeration cycle branches to transfer the cooling energy to the refrigeration zone; In defrosting mode, the fluid heat exchange medium carries the heat into at least one of the refrigeration cycle branches to melt the frost condensed on at least one of the refrigeration cycle branches; the fluid heat exchange medium carries the cold energy into the remaining refrigeration cycle branches to simultaneously transfer the cold energy to the refrigeration zone.

[0007] In one possible implementation, the refrigeration cycle branch is equipped with a fluid pump that can switch to drive the fluid heat exchange medium to flow in either the forward or reverse direction.

[0008] In one possible implementation, the heat transfer mechanism further includes: The defrosting circulation branch located in the cooling zone has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy; In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into the refrigeration cycle loop to conduct the cold energy to the refrigeration zone; In defrosting mode, the fluid heat exchange medium carries the heat into the refrigeration cycle loop to melt the frost condensed on the refrigeration cycle loop; the fluid heat exchange medium carries the cold energy into the defrosting cycle branch to simultaneously transfer the cold energy to the refrigeration zone.

[0009] In one possible implementation, there are multiple refrigeration cycle loops, all of which are located in the refrigeration zone; In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into multiple refrigeration cycle loops to conduct the cold energy to the refrigeration zone; In the defrosting operation, the fluid heat exchange medium carries the heat into at least one of the refrigeration cycle loops to melt the frost condensed on at least one of the refrigeration cycle loops. The fluid heat exchange medium also carries the cold energy into the remaining refrigeration cycle loops to simultaneously transfer the cold energy to the refrigeration zone.

[0010] In one possible implementation, the heat transfer mechanism further includes: A heat dissipation circulation loop is located in the non-cooling zone, and the heat dissipation circulation loop has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy; In the cooling operation state, the fluid heat exchange medium carries the heat into the heat dissipation circulation loop to dissipate heat to the non-cooled area; During defrosting operation, the fluid heat exchange medium carries the cold energy into the heat dissipation circulation loop.

[0011] In one possible implementation, the defrosting device further includes: The solid-state spring card dehumidification mechanism includes a second driver and a second shape memory alloy, wherein the second driver loads the second shape memory alloy to release heat, or the second driver unloads the second shape memory alloy to release cold energy; The dehumidification mechanism includes a dehumidification circulation loop connected to the solid spring dehumidification mechanism. The dehumidification circulation loop is used to introduce air from the refrigeration zone and pass it through a second shape memory alloy in an unloaded state to condense water vapor in the air using the cooling capacity.

[0012] In one possible implementation, a fan is provided on the dehumidification circulation loop, the fan being used to guide air into the dehumidification circulation loop.

[0013] In one possible implementation, the solid-state spring-loaded dehumidification mechanism further includes: A drain outlet is located at the bottom of the solid spring dehumidification mechanism, and an on / off switch is provided on the drain outlet.

[0014] The beneficial effects of the defrosting device provided by this utility model are as follows: Compared with the prior art, firstly, based on the phase change characteristics of the first shape memory alloy in the solid spring-loaded refrigeration mechanism, heat release or cold release is achieved through the loading and unloading action of the first driver, without the need for the conversion of electrical energy to thermal energy in the traditional electric heating method, thus avoiding the energy loss in the conversion process and improving energy utilization efficiency.

[0015] Secondly, the refrigeration circulation loop of the heat transfer mechanism has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy. In the defrosting working state, the fluid heat exchange medium can receive the heat released by the first shape memory alloy and flow in the refrigeration circulation loop, transferring the heat to various areas of the refrigeration circulation loop. Compared with the traditional electric heating method that relies on the slow diffusion of heat, the heat transfer speed is faster and the coverage is more comprehensive, shortening the time required to melt frost and solving the problem of long defrosting time.

[0016] Finally, because this solution eliminates the large amount of electricity required for electric heating and has low losses during energy conversion and transfer, it reduces overall power consumption while achieving rapid defrosting, thus meeting energy-saving requirements.

[0017] This utility model also provides a refrigeration device, including the defrosting device.

[0018] The beneficial effects of the refrigeration equipment provided by this utility model are as follows: Compared with the prior art, since the refrigeration equipment provided by this utility model uses the above-mentioned defrosting device, it has the same beneficial effects as the defrosting device, which will not be described in detail here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a defrosting device provided by this utility model; Figure 2 This is a schematic diagram of the structure of a defrosting device provided in the first embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a defrosting device provided in the second embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a defrosting device provided in the third embodiment of the present invention; Figure 5 A schematic diagram of the solid-state spring-loaded dehumidification mechanism and the dehumidification mechanism provided by this utility model.

[0021] In the picture: 100. Solid-state spring-loaded refrigeration mechanism; 110. First driver; 120. First shape memory alloy; 200. Refrigeration cycle loop; 210. Refrigeration cycle branch; 300. Defrosting cycle branch; 400. Heat dissipation cycle loop; 500. Solid-state spring-loaded dehumidification mechanism; 510. Second shape memory alloy; 520. Drain port; 600. Dehumidification cycle loop; 700. Fan. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0024] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0025] Please see Figures 1 to 4 The present invention provides a defrosting device. A defrosting device includes a solid spring-loaded refrigeration mechanism 100 and a heat transfer mechanism.

[0026] The solid-state cartridge cooling mechanism 100 includes a first driver 110 and a first shape memory alloy 120. The first driver 110 loads the first shape memory alloy 120 to release heat, or the first driver 110 unloads the first shape memory alloy 120 to release cold. The heat transfer mechanism includes a cooling circulation loop 200 connected to the solid-state cartridge cooling mechanism 100. The cooling circulation loop 200 is located in the cooling zone and has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy 120. In the cooling operation state, the fluid heat exchange medium carries cold energy into the cooling circulation loop 200 to conduct cold energy to the cooling zone. In the defrosting operation state, the fluid heat exchange medium carries heat into the cooling circulation loop 200 to melt the frost condensed on the cooling circulation loop 200.

[0027] The defrosting device provided by this utility model, compared with the prior art, firstly, based on the phase change characteristics of the first shape memory alloy 120 in the solid spring-loaded cooling mechanism 100, heat release or cold release is achieved through the loading and unloading action of the first driver 110, without the need for the conversion of electrical energy to thermal energy in the traditional electric heating method, thus avoiding the energy loss in the conversion process and improving energy utilization efficiency.

[0028] Secondly, the refrigeration circulation loop 200 of the heat transfer mechanism has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy 120. In the defrosting working state, the fluid heat exchange medium can receive the heat released by the first shape memory alloy 120 and flow in the refrigeration circulation loop 200, transferring the heat to various areas of the refrigeration circulation loop 200. Compared with the traditional electric heating method that relies on the slow diffusion of heat, the heat transfer speed is faster and the coverage is more comprehensive, shortening the time required to melt frost and solving the problem of long defrosting time.

[0029] Finally, because this solution eliminates the large amount of electricity required for electric heating and has low losses during energy conversion and transfer, it reduces overall power consumption while achieving rapid defrosting, thus meeting energy-saving requirements.

[0030] In the first embodiment, please refer to Figure 2 The refrigeration cycle circuit 200 includes multiple refrigeration cycle branches 210. The multiple refrigeration cycle branches 210 are evenly distributed in the refrigeration zone, and each refrigeration cycle branch 210 is connected to the fluid output end of the solid-state spring-loaded refrigeration mechanism 100. It has a built-in fluid heat exchange medium that can directly conduct heat with the first shape memory alloy 120. At the same time, an electromagnetic control valve and a fluid pump can be configured at the inlet of each refrigeration cycle branch 210, and the flow direction, flow rate and thermal state of the medium can be controlled by the control system.

[0031] In the cooling operation state, the first driver 110 in the solid-state spring-loaded cooling mechanism 100 unloads the first shape memory alloy 120 to release cold energy. After the fluid heat exchange medium absorbs the cold energy, it is transported to each branch by the fluid pump through all the opened branch electromagnetic control valves to conduct the cold energy to the cooling zone to achieve the cooling function. After the medium releases the cold energy, it flows back to the solid-state spring-loaded mechanism to form a closed loop.

[0032] In defrosting mode, if the control system determines that one or more refrigeration cycle branches 210 are frosted through parameter detection (such as ΔT actual / ΔT calibration being less than the set value) or image recognition (the shape / color of the pipe changes due to frost), the first driver 110 in the solid-state spring clip mechanism is adjusted to load the first shape memory alloy 120 to release heat, so that the fluid heat exchange medium carries heat into one or more refrigeration cycle branches 210 that need to be defrosted, and the frost is melted by the heat. At the same time, the electromagnetic control valves of the remaining undefrosted branches remain open, and the fluid heat exchange medium carries cold energy to continuously transfer cold energy to the refrigeration area.

[0033] During defrosting, heating is only provided to the refrigeration cycle branch 210 that has frosted over, while the other refrigeration cycle branches 210 continue to cool. This avoids the sudden temperature rise caused by the interruption of cooling in traditional defrosting, keeping temperature fluctuations in the refrigeration zone within a very small range and ensuring the quality of stored items. It is especially suitable for scenarios with high requirements for temperature stability, such as pharmaceutical cold storage and precision instrument refrigeration. In addition, independent control of the refrigeration cycle branch 210 enables zoned defrosting, operating only on the refrigeration cycle branch 210 that has frosted over, reducing energy waste. At the same time, the branching shortens the medium flow path, making cold / heat transfer more efficient and improving overall refrigeration efficiency.

[0034] Specifically, the refrigeration cycle branch 210 is equipped with a fluid pump that can switch the flow of the heat exchange medium in either the forward or reverse direction. This fluid pump can improve the uniformity of defrosting and the efficiency of heat utilization.

[0035] Each refrigeration cycle branch 210 is independently equipped with a reversible fluid pump (such as a permanent magnet synchronous reversible pump), which is connected in series between the liquid inlet of the refrigeration cycle branch 210 and the fluid output of the solid spring-loaded refrigeration mechanism 100. It is connected to the control system together with the electromagnetic control valve and temperature detector of the refrigeration cycle branch 210. The direction and speed of the fluid pump can be adjusted by the control system according to the operating status.

[0036] In the refrigeration operation state, the control system sets the fluid pump to run in the forward direction. The first driver 110 in the solid spring-loaded refrigeration mechanism 100 unloads the first shape memory alloy 120 to release cold energy. After the fluid heat exchange medium absorbs the cold energy, it flows into the refrigeration cycle branch 210 from the inlet end under the forward driving force of the fluid pump. It flows in the forward direction along the pipeline to conduct the cold energy to the refrigeration zone. After the medium releases the cold energy, it flows back from the outlet end to form a stable refrigeration cycle.

[0037] When defrosting is required, the system switches to defrosting mode and sends a command to switch the solid-state spring mechanism corresponding to the refrigeration cycle branch 210 to be defrosted to heating mode (the first driver 110 loads the shape memory alloy to release heat). At the same time, the system controls the fluid pump of the refrigeration cycle branch 210 to run in reverse, driving the fluid heat exchange medium to flow in from the liquid outlet end and out from the liquid inlet end of the refrigeration cycle branch 210. The pump direction can be dynamically switched according to the temperature detector data, such as switching every 3 minutes, to ensure that the heat of the medium evenly covers the entire length of the branch, avoiding the problem that defrosting is fast at the liquid inlet end and slow at the liquid outlet end that may be caused by traditional unidirectional flow.

[0038] By switching the fluid pump in both forward and reverse directions, the difference in heat attenuation during the flow of the fluid heat exchange medium is eliminated, significantly improving the defrosting uniformity of the refrigeration cycle branch 210 and avoiding the problem of reduced heat exchange efficiency caused by localized areas of undefrosted areas. Furthermore, switching the fluid pump in both directions also reduces the thermal conductivity dead zone of the fluid heat exchange medium within the refrigeration cycle branch 210, ensuring sufficient heat exchange between the fluid heat exchange medium and the cold / heat released by the first shape memory alloy 120, significantly improving heat utilization efficiency and reducing the operating load of the solid-state spring-loaded refrigeration mechanism 100.

[0039] In the second embodiment, please refer to Figure 3The heat transfer mechanism also includes a defrost circulation branch 300. All defrost circulation branches 300 are located in the refrigeration zone, and each branch incorporates a fluid heat exchange medium that can directly conduct heat with the first shape memory alloy 120. The newly added defrost circulation branch 300 and the refrigeration circulation loop 200 are both located within the refrigeration zone and are connected to the solid-state spring-loaded refrigeration mechanism 100 via pipelines. Both also incorporate a fluid heat exchange medium that can directly conduct heat with the first shape memory alloy 120. Furthermore, each loop inlet is equipped with an electromagnetic control valve, which, in conjunction with the control system, can operate either a forward / reverse fluid pump or two unidirectional fluid pumps. All of the above components are connected to the corresponding control system to achieve regulation of the cold / hot state and flow direction of the fluid heat exchange medium.

[0040] In the cooling operation state, the control system triggers the cooling mode of the solid-state ejector mechanism. The first driver 110 unloads the first shape memory alloy 120 to release cold energy. The valve of the cooling cycle loop 200 is opened. The fluid pump delivers the medium that absorbs the cold energy to the cooling cycle loop 200 and conducts the cold energy to the cooling zone to achieve the cooling function. After the medium releases the cold energy, it flows back to the solid-state ejector mechanism to form a closed loop.

[0041] When the control system determines that defrosting is required through parameter detection or image recognition, the device switches to the defrosting working state. At this time, the first driver 110 loads the first shape memory alloy 120 to release heat, and the control system opens the valve of the refrigeration cycle loop 200 to deliver the heat-absorbing fluid heat exchange medium. The heat melts the frost on the pipe wall of the refrigeration cycle loop 200. At the same time, the valve of the defrosting cycle branch 300 is opened to transfer the cold energy output by the solid spring clip mechanism to the refrigeration zone through the cold medium, so as to realize the parallel operation of defrosting and refrigeration.

[0042] The defrost circulation branch 300 continues to cool during the defrosting of the refrigeration circulation loop 200, keeping the temperature fluctuations in the refrigeration zone within a controllable cooling range, thus ensuring the storage quality of medicines, fresh produce, and other items.

[0043] In the third embodiment, please refer to Figure 4 The heat transfer mechanism is equipped with multiple refrigeration circulation loops 200 located in the refrigeration zone. Each refrigeration circulation loop 200 has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy 120, and forms a linkage control with the solid spring-loaded refrigeration mechanism 100 through an electromagnetic control valve, a reversible fluid pump, and a reciprocating fluid pump.

[0044] In the refrigeration working state, the control system triggers the solid-state spring-loaded refrigeration mechanism 100 to enter the refrigeration mode. The first driver 110 unloads the first shape memory alloy 120 to release cold energy. After the fluid heat exchange medium absorbs the cold energy, it flows evenly into each refrigeration cycle loop 200 through the valves of all the refrigeration cycle loops 200 under the drive of the fluid pump and conducts the cold energy to the refrigeration zone, meeting the overall refrigeration needs of equipment such as refrigerators and cold storage. After the medium releases the cold energy, it flows back to the solid-state spring-loaded refrigeration mechanism 100, forming a multi-loop coordinated closed-loop refrigeration cycle.

[0045] When the control system determines that defrosting is required through parameter detection or image recognition, it switches to the defrosting operation state. At this time, the first driver 110 loads the first shape memory alloy 120 to release heat, and the control system closes the valves of some refrigeration cycle loops 200, allowing only the hot fluid heat exchange medium to enter at least one frosted refrigeration cycle loop 200, melting the frost on the loop pipe walls through heat. At the same time, the valves of the remaining unfrosted loops remain open, allowing the cold energy output from the solid spring mechanism to be carried into these loops through the cold medium, continuously transferring cold energy to the refrigeration zone, realizing the parallel operation of partial loop defrosting in conjunction with the refrigeration of the remaining loops.

[0046] Based on the above embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The heat transfer mechanism also includes a heat dissipation circulation loop 400. The heat dissipation circulation loop 400 has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy 120, and is linked with the solid-state spring-loaded cooling mechanism 100 by controlling the corresponding solenoid valve through the control system.

[0047] In the cooling operation state, the first driver 110 in the solid-state spring-loaded cooling mechanism 100 unloads the first shape memory alloy 120 to release cold energy. At the same time, the heat generated is absorbed by the fluid heat exchange medium. The fluid heat exchange medium flows into the heat dissipation circulation loop 400 under the action of the fluid pump, and conducts the heat to the non-cooled area (such as the external environment of the equipment), so as to realize the discharge of waste heat in the cooling process.

[0048] During defrosting operation, the fluid heat exchange medium carries heat into the refrigeration cycle loop 200 to melt the frost adhering to the refrigeration area within the loop 200. Simultaneously, the fluid heat exchange medium cools the heat into the heat dissipation cycle loop 400. Within one operating cycle, the heat and cold generated by the shape memory alloy are conserved. Thus, if the heat generated during the loading phase is used for defrosting instead of removing the cold generated during the unloading phase from the solid-state spring-loaded refrigeration mechanism 100, the heat generated during the next loading phase will neutralize the previous cold.

[0049] Please see Figure 5 The defrosting device also includes a solid spring dehumidification mechanism 500 and a dehumidification mechanism.

[0050] The solid-state spring-loaded dehumidification mechanism 500 includes a second driver (not shown in the figure) and a second shape memory alloy 510. The second driver loads the second shape memory alloy 510 to release heat, or the second driver unloads the second shape memory alloy 510 to release cold energy. The dehumidification mechanism includes a dehumidification circulation loop 600 connected to the solid-state spring-loaded dehumidification mechanism 500. The dehumidification circulation loop 600 is used to introduce air from the refrigeration zone and pass it through the unloaded second shape memory alloy 510 to condense water vapor in the air using the cold energy.

[0051] The defrosting device integrates a solid spring dehumidification mechanism 500, forming an integrated defrosting and dehumidification functional system.

[0052] The solid-state cartridge dehumidification mechanism 500 includes a second driver and a second shape memory alloy 510, and its working logic is the same as that of the solid-state cartridge dehumidification mechanism 500 in the defrosting device. When the second driver performs a loading action on the second shape memory alloy 510, the alloy releases heat; when it performs an unloading action, the second shape memory alloy 510 releases cold energy, providing a cold source for dehumidification. The dehumidification circulation loop 600 is connected to the cooling zone through a corresponding air duct, and is also thermally connected to the second shape memory alloy 510 of the solid-state cartridge dehumidification mechanism 500, ensuring that the cold energy is efficiently transferred to the inside of the loop.

[0053] In actual operation, when the humidity in the cooling zone rises and dehumidification is required, the dehumidification circulation loop 600 is activated. The air duct introduces humid air from the cooling zone into the dehumidification circulation loop 600. At this time, the second actuator performs an unloading action on the second shape memory alloy 510. The second shape memory alloy 510 releases cold energy and completes heat exchange with the air inside the dehumidification circulation loop 600, causing the water vapor in the air to condense into liquid water. Once the air humidity drops to a set threshold, the second actuator switches to a loading state, and the alloy releases heat, which can slightly heat the inside of the dehumidification circulation loop 600 to prevent residual water vapor from freezing and clogging the air duct, thus completing one dehumidification cycle. During defrosting in the cooling circulation loop 200, the solid-state spring-loaded dehumidification mechanism 500 can be started and stopped according to the humidity in the cooling zone. If defrosting causes the humidity in the cooling zone to rise, the dehumidification mechanism starts simultaneously to avoid additional water vapor forming secondary frost on the pipe surface; if the humidity is within the normal range, the dehumidification mechanism remains in standby mode to reduce energy consumption.

[0054] Please see Figure 5 A fan 700 is installed on the dehumidification circulation loop 600. The fan 700 starts synchronously with the dehumidification mechanism to introduce humid air in the cooling zone into the dehumidification circulation loop 600.

[0055] In addition, the solid-state spring-loaded dehumidifier 500 also includes a drain port 520. The drain port 520 is located at the bottom of the solid-state spring-loaded dehumidifier 500 and is equipped with an on / off switch. Liquid water condensed from water vapor will collect at the bottom of the solid-state spring-loaded dehumidifier 500 due to gravity. At this time, the on / off switch of the drain port 520 will automatically open according to the amount of condensate, or the one-way valve will naturally open under water pressure, allowing the condensate to be smoothly discharged to a water receiving container or drain pipe outside the device. After the condensate is drained, the on / off switch will automatically close, or the one-way valve will reset and close after the pressure difference disappears, forming a sealed state.

[0056] This utility model also provides a refrigeration device, including the aforementioned defrosting device. The refrigeration device includes refrigerators, cold storage facilities, air conditioners, dehumidifiers, refrigerated trucks, insulated boxes, refrigerated containers, and other equipment requiring refrigeration, while the defrosting device can be located inside the aforementioned refrigeration device.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A defrosting device, characterized in that, include: A solid-state spring-loaded cooling mechanism (100) includes a first driver (110) and a first shape memory alloy (120), wherein the first driver (110) loads the first shape memory alloy (120) to release heat, or the first driver (110) unloads the first shape memory alloy (120) to release cold energy; The heat transfer mechanism includes a refrigeration loop (200) connected to the solid spring-loaded refrigeration mechanism (100), the refrigeration loop (200) being located in the refrigeration zone, and the refrigeration loop (200) having a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy (120); In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into the refrigeration cycle loop (200) to conduct the cold energy to the refrigeration zone; In the defrosting operation, the fluid heat exchange medium carries the heat into the refrigeration cycle loop (200) to melt the frost condensed on the refrigeration cycle loop (200) through the heat.

2. The defrosting device as described in claim 1, characterized in that, The refrigeration cycle loop (200) includes: Multiple refrigeration cycle branches (210) are located in the refrigeration zone, and each refrigeration cycle branch (210) has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy (120); In the refrigeration operation state, the fluid heat exchange medium carries the cooling energy into multiple refrigeration cycle branches (210) respectively, so as to transfer the cooling energy to the refrigeration zone; In the defrosting operation state, the fluid heat exchange medium carries the heat into at least one of the refrigeration cycle branches (210) to melt the frost condensed on at least one of the refrigeration cycle branches (210) through heat; the fluid heat exchange medium carries the cold energy into the remaining refrigeration cycle branches (210) respectively to transfer the cold energy to the refrigeration zone at the same time.

3. A defrosting device as described in claim 2, characterized in that, The refrigeration cycle branch (210) is equipped with a fluid pump that can switch to drive the fluid heat exchange medium to flow in either the forward or reverse direction.

4. A defrosting device as described in claim 1, characterized in that, The heat transfer mechanism also includes: The defrosting circulation branch (300) located in the refrigeration zone has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy (120); In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into the refrigeration cycle loop (200) to conduct the cold energy to the refrigeration zone; In the defrosting operation state, the fluid heat exchange medium carries the heat into the refrigeration cycle loop (200) to melt the frost condensed on the refrigeration cycle loop (200) through the heat; the fluid heat exchange medium carries the cold energy into the defrosting cycle branch (300) to simultaneously transfer the cold energy to the refrigeration zone.

5. A defrosting device as described in claim 1, characterized in that, The number of the refrigeration cycle loops (200) is multiple, and all of the multiple refrigeration cycle loops (200) are located in the refrigeration zone; In the refrigeration operation state, the fluid heat exchange medium carries the cold energy into multiple refrigeration cycle loops (200) to conduct the cold energy to the refrigeration zone; In the defrosting operation state, the fluid heat exchange medium carries the heat into at least one of the refrigeration cycle loops (200) to melt the frost condensed on at least one of the refrigeration cycle loops (200) through the heat, and the fluid heat exchange medium carries the cold energy into the remaining refrigeration cycle loops (200) to simultaneously conduct the cold energy to the refrigeration zone.

6. A defrosting device as described in any one of claims 1-5, characterized in that, The heat transfer mechanism also includes: A heat dissipation circulation loop (400) is located in the non-cooling zone. The heat dissipation circulation loop (400) has a built-in fluid heat exchange medium that can conduct heat with the first shape memory alloy (120). In the cooling operation state, the fluid heat exchange medium carries the heat into the heat dissipation circulation loop (400) to dissipate heat to the non-cooled area; In defrosting mode, the fluid heat exchange medium carries the cold energy into the heat dissipation circulation loop (400).

7. A defrosting device as described in any one of claims 1-5, characterized in that, The defrosting device also includes: Solid-state dehumidification mechanism (500) includes a second driver and a second shape memory alloy (510), wherein the second driver loads the second shape memory alloy (510) to release heat, or the second driver unloads the second shape memory alloy (510) to release cold energy; The dehumidification mechanism includes a dehumidification circulation loop (600) connected to the solid spring dehumidification mechanism (500), the dehumidification circulation loop (600) being used to introduce air from the refrigeration zone and pass it through the unloaded second shape memory alloy (510) to condense water vapor in the air using the cooling capacity.

8. A defrosting device as described in claim 7, characterized in that, A fan (700) is provided on the dehumidification circulation loop (600), and the fan (700) is used to guide air into the dehumidification circulation loop (600).

9. A defrosting device as described in claim 7, characterized in that, The solid-state spring dehumidification mechanism (500) also includes: A drain port (520) is located at the bottom of the solid spring dehumidification mechanism (500), and an on / off switch is provided on the drain port (520).

10. A refrigeration device, characterized in that, Includes the defrosting device as described in any one of claims 1-9.

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