Refrigeration equipment

Abstract

The utility model relates to the technical field of household appliances, in particular to refrigeration equipment. The refrigeration equipment comprises a temperature changing device, the interior of the temperature changing device is divided into a temperature changing cavity and a mounting cavity which are isolated from each other, a radio frequency generating device is arranged in the mounting cavity, a radio frequency transmitting assembly is arranged in the temperature changing cavity, and the radio frequency transmitting assembly radiates radio frequency energy into the temperature changing cavity so that stored objects in the temperature changing cavity can be unfrozen. The mounting cavity is communicated with the air duct chamber of the refrigeration equipment, so that the heat loss energy of the radio frequency generating device during working can be fed into the air duct chamber to defrost the evaporator, and the heat loss energy of the radio frequency generating device during working can be utilized and transferred to other chambers adjacent to the temperature changing device as little as possible; and the possibility of temperature fluctuation of other adjacent chambers can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a refrigeration device. Background Art

[0002] During the storage of food ingredients, it is necessary to freeze them to maintain their quality and prevent spoilage. The frozen food ingredients need to be thawed before processing or consumption. The radio frequency thawing technology has the advantages of fast thawing rate, large penetration depth, and uniform heating, and is widely used in refrigeration devices such as refrigerators to thaw frozen food ingredients.

[0003] However, in the related art, for a refrigeration device with a radio frequency thawing device, during actual use, the heat generated when the radio frequency thawing device works is easily transferred to the refrigeration compartment adjacent to the radio frequency thawing device, which will cause temperature fluctuations in the adjacent refrigeration compartment and have an adverse impact on the preservation of substances in the refrigeration compartment. Summary of the Utility Model

[0004] The utility model aims to at least to a certain extent reduce the adverse impact of the heat generated when the radio frequency thawing device works on the preservation of substances in the refrigeration compartment, and at least to a certain extent enable the heat generated when the radio frequency thawing device works to defrost the evaporator.

[0005] To achieve the above object, the utility model provides a refrigeration device, including: a box body, an evaporator, a variable temperature device, and a fan; the interior of the box body is partitioned into a storage compartment and an air duct compartment, and the air duct compartment has a heat circulation inlet and a heat circulation outlet; the evaporator is arranged in the air duct compartment;

[0006] The variable temperature device is accommodated in the storage compartment; the variable temperature device includes a shielding cylinder body, a shielding door body, a radio frequency generating device, and a radio frequency transmitting component; the interior of the shielding cylinder body is partitioned into a mutually isolated variable temperature chamber and an installation chamber, the front side of the variable temperature chamber is open, and the shielding door body can open and close the opening; an outflow hole and a return hole are provided on the chamber wall of the installation chamber, the outflow hole is communicated with the heat circulation inlet, and the heat circulation outlet is communicated with the return hole; the radio frequency generating device is arranged in the installation chamber and controllably provides power for the radio frequency transmitting component arranged in the variable temperature chamber, and the radio frequency transmitting component is used for radiating radio frequency energy into the variable temperature chamber so as to thaw the storage objects in the variable temperature chamber;

[0007] The fan is used to drive air to flow in the installation chamber and the air duct compartment.

[0008] The utility model provides a refrigeration device including a temperature-changing device, wherein the shielding cylinder of the temperature-changing device is divided into a temperature-changing chamber and an installation chamber, a radio frequency generating device is arranged in the installation chamber, and a radio frequency transmitting component is arranged in the temperature-changing chamber. When the radio frequency generating device and the radio frequency transmitting component are in operation, the stored objects in the temperature-changing chamber at the quick-freezing temperature can be thawed. At the same time, the fan can controllably drive the air to flow in the installation chamber and the air duct chamber, and the energy of the heat loss of the radio frequency generating device itself can be sent into the air duct chamber when the radio frequency generating device is in operation.

[0009] When the evaporator is frosted due to long-term operation of the refrigeration equipment, the energy of the heat loss of the radio frequency generating device itself when it is working is sent to the air duct compartment, and the evaporator is defrosted by using the energy of the heat loss of the radio frequency generating device itself when it is working. This can reduce the adverse effects of frost on the working efficiency of the evaporator, and can also make the energy of the heat loss of the radio frequency generating device itself when it is working be utilized and transferred as little as possible to other compartments adjacent to the temperature variable device, which is beneficial to reduce the possibility of temperature fluctuations in other adjacent compartments.

[0010] In addition, the refrigeration equipment according to the utility model may also have the following additional technical features:

[0011] According to one embodiment of the utility model, the refrigeration equipment also includes an air duct cover plate arranged in the box body, the air duct cover plate divides the box body into a storage room and an air duct room, and the air duct room is located at the rear side of the storage room; the heat circulation inlet and the heat circulation outlet are both arranged through the air duct cover plate.

[0012] According to an embodiment of the present invention, the center line of the outflow hole is perpendicular to the center line of the return hole.

[0013] According to an embodiment of the present invention, the outflow hole is located above the return hole, and the heat circulation inlet is located above the heat circulation outlet.

[0014] According to one embodiment of the utility model, the outflow hole is arranged on the rear wall of the installation chamber and is arranged opposite to the heat circulation inlet; the installation chamber has a first side wall and a second side wall opposite to each other, the first side wall is opposite to the side plate of the box body and there is a gap, the reflux hole is arranged on the first side wall, and the heat circulation outlet is opposite to the gap.

[0015] According to an embodiment of the present invention, the outflow hole is located at an end of the rear wall away from the first side wall.

[0016] According to an embodiment of the present invention, a plurality of outflow holes and a plurality of return holes are distributed in an array on the cavity wall of the installation cavity, and the diameters of the outflow holes and the return holes are both no greater than 5 mm.

[0017] According to an embodiment of the present utility model, a plurality of outflow holes form an outflow area, and the plurality of outflow holes in the outflow area are evenly distributed. The minimum vertical distance between any two adjacent outflow holes is greater than 0 mm and less than or equal to 3 mm.

[0018] According to an embodiment of the present utility model, a plurality of return holes form a return area, and the plurality of return holes in the return area are evenly distributed. The minimum vertical distance between any two adjacent return holes is greater than 0 mm and less than or equal to 3 mm.

[0019] According to an embodiment of the present utility model, a fan is arranged in the installation chamber and is arranged at the outflow hole.

[0020] According to an embodiment of the present utility model, a cold circulation inlet and a cold circulation outlet are penetratingly arranged on the air duct cover plate, and an air inlet and an air return outlet are arranged on the chamber wall of the variable temperature chamber; the air inlet is communicated with the cold circulation outlet, and the air return outlet is communicated with the cold circulation inlet;

[0021] The refrigeration device further includes a driving fan, which is used to drive air to flow between the variable temperature chamber and the air duct chamber, so that the stored items in the variable temperature chamber can reach the quick-freezing temperature; the driving fan and the radio frequency generating device operate controllably, and when one of the driving fan and the radio frequency generating device operates, the other stops operating.

[0022] According to an embodiment of the present utility model, the storage chamber includes at least one refrigerating chamber, and the variable temperature chamber and at least one refrigerating chamber are arranged in sequence along the vertical direction;

[0023] The variable temperature chamber and an adjacent refrigerating chamber are refrigerated by the same evaporator; or, there are multiple evaporators, and the variable temperature chamber and an adjacent refrigerating chamber are refrigerated by two evaporators respectively;

[0024] The refrigeration device further includes a circulation fan, which controllably sends the air heat-exchanged with the evaporator in the air duct chamber into the refrigerating chamber, so that the stored items in the refrigerating chamber can reach the preset preservation temperature, and the preset preservation temperature is greater than the quick-freezing temperature. Description of the Drawings

[0025] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0026] Figure 1 Schematically shows a vertical sectional view of a refrigerator according to an embodiment of the present disclosure;

[0027] Figure 2 is Figure 1 a three-dimensional schematic view of the shielding cylinder of the variable temperature device shown in

[0028] Figure 3 is Figure 1 a vertical sectional schematic view of the variable temperature device part of the refrigerator shown in

[0029] Figure 4 is Figure 1 a sectional schematic view of the refrigerator shown in when the driving fan is operating, viewed from above;

[0030] Figure 5 is Figure 1 a sectional schematic view of the refrigerator shown in when the fan is operating, viewed from above;

[0031] Figure 6 is Figure 1 the front view of the air duct cover plate shown in .

[0032] Among them, the reference numerals are as follows:

[0033] 100, refrigeration equipment;

[0034] 10, box body; 11, air duct cover plate; 111, hot cycle inlet; 112, hot cycle outlet; 113, cold cycle inlet; 114, cold cycle outlet; 115, gap;

[0035] 20, refrigeration system; 21, compressor; 22, evaporator;

[0036] 30, foam layer;

[0037] 40, variable temperature device; 41, shielding cylinder; 411, partition; 412, air inlet; 413, air return port; 414, outflow hole; 415, return hole; 416, air inlet channel; 417, air return channel; 42, radio frequency generating device; 421, power supply; 422, inductor; 43, radio frequency transmitting component; 44, shielding door body; 441, foam layer; 45, drawer;

[0038] 50, driving fan;

[0039] 60, fan;

[0040] A1, storage compartment; A11, refrigerated compartment; A2, air duct compartment; A3, compressor compartment;

[0041] P1, variable temperature chamber; P11, top surface; P12, bottom surface; P13, side surface; P2, installation chamber; P21, first side wall; P22, second side wall; P23, rear wall. Specific embodiments

[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0043] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0044] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0045] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can include both an orientation above and below.

[0046] Embodiments of the present disclosure provide a refrigeration device 100 for inhibiting bacterial reproduction by creating a low-temperature environment so as to preserve stored items. The stored items are not limited to food ingredients, and can also be ice cubes, beverages, etc. Figure 1 Schematically shows a vertical cross-sectional view of a refrigerator according to an embodiment of the present disclosure. Please refer to Figure 1 , the refrigeration device 100 can be a refrigerator, a freezer or a wine cabinet. In the following, the refrigerator is taken as an example to introduce the refrigeration device 100 of this embodiment in detail. For ease of understanding, in the various drawings of the embodiments of the present disclosure, the X-axis, Y-axis, and Z-axis directions respectively represent the left-right direction, front-back direction, and height direction (also referred to as the vertical direction) of the refrigerator.

[0047] As Figure 1 shown, the refrigeration device 100 includes a box body 10 and a refrigeration system 20. The interior of the box body 10 is partitioned to form a storage compartment A1 and an air duct compartment A2. The storage compartment A1 includes at least one refrigerated compartment A11.

[0048] The refrigeration system 20 includes a compressor 21, an evaporator 22, a condenser, and a throttling device (not shown in the figure). The exhaust port of the compressor 21 is connected to the condenser, the outlet pipe of the condenser is connected to the evaporator 22, the evaporator 22 is connected to the inlet of the compressor 21 through a return pipe, and the throttling device is arranged between the condenser and the evaporator 22. Exemplarily, a compressor chamber A3 can also be formed inside the box body 10, and the compressor 21 can be accommodated in the compressor chamber A3. The evaporator 22 is accommodated in the air duct compartment A2. Among them, the throttling device can be any one of a capillary tube, an electronic expansion valve, and a throttle valve.

[0049] The refrigeration device 100 further includes a circulation fan (not shown in the figure). The circulation fan controllably sends the air in the air duct compartment A2 that has exchanged heat with the evaporator 22 into the refrigerated compartment A11, so that the stored items in the refrigerated compartment A11 can reach a preset preservation temperature.

[0050] Figure 2 For Figure 1 a three-dimensional schematic diagram of the shielding cylinder body of the variable temperature device shown in. Please combine Figure 1 and Figure 2, the refrigeration device 100 further includes a temperature-changing device 40, which is housed in the storage compartment A1. The temperature-changing device 40 includes a shielding cylinder 41 and a shielding door 44. The interior of the shielding cylinder 41 is divided into a temperature-changing chamber P1 and an installation chamber P2 that are isolated from each other. "Isolated" means that the temperature-changing chamber P1 and the installation chamber P2 are not connected, and the air in the temperature-changing chamber P1 and the air in the installation chamber P2 cannot flow into each other. The temperature-changing chamber P1 and at least one refrigerating compartment A11 are arranged in sequence in the vertical direction. The temperature-changing chamber P1 is used to house storage items. There is an opening on the front side of the temperature-changing chamber P1, and the shielding door 44 is used to open and close the opening. When the opening is in the open state, users can conveniently store the storage items into the temperature-changing chamber P1 from the opening. When the opening is in the closed state, the internal space of the shielding cylinder 41 can be isolated from the external environment of the refrigeration device 100. Among them, the front side refers to the side of the refrigeration device 100 facing the user in the Y-axis direction. On the contrary, the rear side refers to the side of the refrigeration device 100 facing away from the user in the Y-axis direction.

[0051] The temperature-changing device 40 further includes a radio frequency generating device 42 and a radio frequency transmitting component 43 that are electrically connected. The radio frequency generating device 42 is arranged in the installation chamber P2, and the radio frequency transmitting component 43 is arranged in the temperature-changing chamber P1. The radio frequency generating device 42 provides radio frequency power for the radio frequency transmitting component 43. The radio frequency transmitting component 43 receives the radio frequency power and is used to emit radio frequency energy radiation to the storage items in the temperature-changing chamber P1 so as to thaw the storage items.

[0052] Among them, the radio frequency generating device 42 can be specifically implemented as including an inductor 422, a power supply 421, a power amplifier module, and a control module that are electrically connected. The radio frequency transmitting component 43 can be implemented as a plate electrode, and the plate electrode is electrically connected to the inductor 422. The power supply 421 is used to supply power to the power amplifier module, the control module, and the inductor 422. The control module is configured to control the working states of the power supply 421 and the power amplifier module. The power amplifier module is used to generate radio frequency power. After receiving the radio frequency power, the plate electrode radiates radio frequency energy into the temperature-changing chamber P1, so that the storage items housed in the temperature-changing chamber P1 are thawed. It should be noted that when the opening is in the closed state, the shielding cylinder 41 and the shielding door 44 can shield the radio frequency energy, which can reduce the possibility of radio frequency energy leakage to the outside of the shielding cylinder 41.

[0053] Among them, the shielding cylinder 41 and the shielding door 44 can be made of metal materials, for example, to be able to shield radio frequency energy. Further, a foaming layer 441 can be provided inside the shielding door 44, so that while the shielding door 44 can shield radio frequency energy, it can also reduce the loss of cold energy and play a heat preservation role.

[0054] In some embodiments of the present disclosure, a foam layer 30 can also be provided outside the box body 10, which can reduce the loss of cold energy and improve the refrigeration efficiency.

[0055] Figure 3 The Figure 1 schematic vertical cross-sectional view of the variable temperature device 40 part of the refrigerator shown in Figure 4 The Figure 1 schematic top-view cross-sectional view of the refrigerator shown in when the driving fan 50 is operating, Figure 5 The Figure 1 schematic top-view cross-sectional view of the refrigerator shown in when the fan 60 is operating. In some embodiments of the present disclosure, please refer to Figure 3 and Figure 5 shown, the air duct compartment A2 has a heat circulation inlet 111 and a heat circulation outlet 112. An outflow hole 414 and a return hole 415 are provided on the chamber wall of the installation chamber P2. The outflow hole 414 is communicated with the heat circulation inlet 111, and the heat circulation outlet 112 is communicated with the return hole 415.

[0056] Moreover, the refrigeration device 100 further includes a fan 60 configured to drive air to flow in the installation chamber P2 and the air duct compartment A2. It can be understood that the outflow hole 414, the heat circulation inlet 111, the air duct compartment A2, the heat circulation outlet 112, the return hole 415, and the installation chamber P2 are sequentially connected to form a heat circulation flow path.

[0057] Specifically, when the radio frequency generating device 42 is operating, there is heat loss. When the fan 60 is operating, it can drive the air in the installation chamber P2 to carry heat and flow out from the outflow hole 414, and then flow into the air duct compartment A2 through the heat circulation inlet 111 to exchange heat with the evaporator 22. The air after heat exchange then flows out of the air duct compartment A2 from the heat circulation outlet 112, and then enters the installation chamber P2 through the return hole 415. The air carrying heat flows out from the outflow hole 414 again, thus starting the next cycle. Among them, the flow direction of the air along the heat circulation flow path is shown by a dotted arrow in Figure 5

[0058] An exemplary working process of the refrigerator in the embodiment of the present disclosure during use is as follows: When the user needs to thaw the stored items in the variable temperature chamber P1 for processing or consumption, the refrigeration system 20 stops operating, and the radio frequency generating device 42 operates. The radio frequency transmitting component 43 emits radio frequency energy and radiates it into the variable temperature chamber P1, and the radio frequency energy is absorbed by the stored items. At the same time, the fan 60 operates to drive the air in the installation chamber P2 to flow along the heat circulation flow path until the stored items are thawed.

[0059] It can be seen that in this embodiment, the refrigeration device 100 is provided with a temperature-changing device 40. The interior of the shielding cylinder 41 of the temperature-changing device 40 is partitioned into a temperature-changing chamber P1 and an installation chamber P2. An RF generating device 42 is provided in the installation chamber P2, and an RF transmitting assembly 43 is provided in the temperature-changing chamber P1. When the RF generating device 42 and the RF transmitting assembly 43 are operating, the stored items at the quick-freezing temperature in the temperature-changing chamber P1 can be thawed. At the same time, the fan 60 can controllably drive air to flow between the installation chamber P2 and the air duct compartment A2, and the energy of the heat loss of the RF generating device 42 itself during operation can be sent into the air duct compartment A2.

[0060] When the refrigeration device 100 operates for a long time, the evaporator 22 is prone to frosting. In this embodiment, the energy of the heat loss of the RF generating device 42 itself during operation is sent into the air duct compartment A2, and the evaporator 22 is defrosted by using the energy of the heat loss of the RF generating device 42 itself during operation, so as to reduce the frosting degree of the evaporator 22 and reduce the adverse effect of frosting on the working efficiency of the evaporator 22. Moreover, in this way, the heat dissipated by the RF generating device 42 during operation can be utilized, so that the heat transferred to the refrigeration compartment A11 adjacent to the temperature-changing device 40 is reduced, which is beneficial to reducing the possibility of temperature fluctuation in the adjacent refrigeration compartment A11.

[0061] In some embodiments of the present disclosure, please refer to Figure 3 and Figure 4 As shown, the air duct compartment A2 may also have a cold cycle inlet 113 and a cold cycle outlet 114. An air inlet 412 and an air return port 413 may be provided on the chamber wall of the temperature-changing chamber P1. The air inlet 412 is communicated with the cold cycle outlet 114, and the air return port 413 is communicated with the cold cycle inlet 113.

[0062] In addition, the refrigeration device 100 further includes a driving fan 50 configured to controllably drive air to flow between the temperature-changing chamber P1 and the air duct compartment A2, so that the stored items can reach the quick-freezing temperature. The driving fan 50 and the RF generating device 42 operate controllably. When the driving fan 50 is operating, the fan 60 and the RF generating device 42 stop operating; when the fan 60 and the RF generating device 42 are operating, the driving fan 50 stops operating. Among them, the value range of the quick-freezing temperature is, for example, -38°C to -42°C.

[0063] It can be understood that the return air outlet 413, the cold cycle inlet 113, the air duct compartment A2, the cold cycle outlet 114, the air inlet 412, and the variable temperature chamber P1 are connected in sequence to form a cold cycle flow path. When the driving fan 50 works, the air in the variable temperature chamber P1 flows out from the return air outlet 413, then flows into the air duct compartment A2 through the cold cycle inlet 113 and exchanges heat with the evaporator 22. The cold air after heat exchange flows out of the air duct compartment A2 from the cold cycle outlet 114, and then flows into the variable temperature chamber P1 through the air inlet 412 and exchanges heat with the stored items, so that the temperature of the stored items decreases. The air after heat exchange with the stored items flows out from the return air outlet 413 again, thus starting the next cycle. Repeating this process, the stored items in the variable temperature chamber P1 can ultimately reach the quick-freezing temperature. Among them, the flow direction of the air along the cold cycle flow path is shown by a solid arrow in Figure 4 as shown.

[0064] An exemplary working process of the refrigerator according to the embodiment of the present disclosure during use is as follows:

[0065] After placing the stored items into the variable temperature chamber P1, the refrigeration system 20 and the driving fan 50 work. At the same time, the radio frequency generating device 42 and the fan 60 do not operate. Driven by the driving fan 50, the air in the variable temperature chamber P1 flows along the cold cycle flow path, so that the stored items reach the quick-freezing temperature. Then, the refrigeration system 20 and the driving fan 50 stop operating.

[0066] When the user needs to process or consume the stored items, the driving fan 50 does not operate, and the radio frequency generating device 42 and the fan 60 work. The radio frequency emitting component 43 emits radio frequency energy and radiates it to the stored items in the variable temperature chamber P1 for absorption. At the same time, the fan 60 drives the air to flow in the installation chamber P2 and the air duct compartment A2, so that the energy of the heat loss of the radio frequency generating device 42 itself during operation can be sent into the air duct compartment A2.

[0067] In this embodiment, the variable temperature device 40 integrates a quick-freezing function and a radio frequency thawing function. The quick-freezing function and the radio frequency thawing function can be switched according to the user's usage requirements, so that the stored items placed in the variable temperature chamber P1 can be quickly frozen and stored, and the stored items that are quickly frozen and stored can also be thawed by radio frequency. In this way, not only can the quality of the stored items after thawing be greatly improved, but also the stored items placed in the variable temperature chamber P1 do not need to be replaced in position from quick-freezing storage to thawing, saving the user the operation of taking out the stored items at the quick-freezing temperature for thawing and avoiding the increase in the complexity of the user's operation.

[0068] It should be noted that during the process of bringing the stored items in the variable temperature chamber P1 to the quick-freezing temperature, the power and load of the compressor 21 are large, and the evaporator 22 is more likely to frost. In this embodiment, since the fan 60 is used to send the energy of the heat loss generated by the radio frequency generating device 42 itself during operation into the air duct compartment A2, the frosting degree of the evaporator 22 can be reduced, enabling the variable temperature device 40 to operate normally.

[0069] Figure 6 For Figure 1 the front view of the air duct cover plate shown in. In some embodiments of the present disclosure, please refer to Figure 1 and Figure 3 shown, the refrigeration device 100 further includes an air duct cover plate 11 disposed in the box body 10. The air duct cover plate 11 divides the interior of the box body 10 into a storage compartment A1 and an air duct compartment A2. The air duct compartment A2 is located at the rear side of the storage compartment A1. In other words, the air duct cover plate 11 and the rear plate of the box body 10 jointly define the air duct compartment A2, and the rear wall of the storage compartment A1 is the air duct cover plate 11.

[0070] It can be understood that, as Figure 6 shown, the heat circulation inlet 111, the heat circulation outlet 112, the cold circulation inlet 113, and the cold circulation outlet 114 are all disposed through the air duct cover plate 11. Among them, the shapes of the heat circulation inlet 111, the heat circulation outlet 112, the cold circulation inlet 113, and the cold circulation outlet 114 are not specifically limited.

[0071] In this article, the positional relationship between the variable temperature chamber P1 and the installation chamber P2 is diverse. The variable temperature chamber P1 and the installation chamber P2 can be sequentially arranged along any one of the X-axis direction, the Y-axis direction, and the Z-axis direction. Several possible implementation manners will be described separately below.

[0072] In the embodiment where the variable temperature chamber P1 and the installation chamber P2 are sequentially arranged along the X-axis direction, the variable temperature chamber P1 can be disposed, for example, on the left or right side of the installation chamber P2.

[0073] In the embodiment where the variable temperature chamber P1 and the installation chamber P2 are sequentially arranged along the Z-axis direction, the variable temperature chamber P1 can be disposed, for example, above the installation chamber P2, or can also be disposed, for example, below the installation chamber P2.

[0074] In the technical solution where the variable temperature chamber P1 and the installation chamber P2 are sequentially arranged along the X-axis direction / Z-axis direction, the rear side of the shielding cylinder 41 can be in contact with the air duct cover plate 11. The air inlet 412, the air return port 413, the outflow hole 414, and the return hole 415 are all disposed through the rear side plate of the shielding cylinder 41. The air inlet 412 is directly opposite to the cold circulation outlet 114, the air return port 413 is directly opposite to the cold circulation inlet 113, the outflow hole 414 is directly opposite to the heat circulation inlet 111, and the return hole 415 is directly opposite to the heat circulation outlet 112.

[0075] In the embodiment where the temperature-changing chamber P1 and the installation chamber P2 are arranged in sequence along the Y-axis direction, as Figure 1 and Figure 2 shown, the installation chamber P2 is located behind the temperature-changing chamber P1. In this embodiment, the installation chamber P2 is designed to be located between the temperature-changing chamber P1 and the air duct intermediate chamber A2, so that the front opening of the shielding cylinder body 41 will not be occupied by the installation chamber P2. That is, compared with the scheme where the temperature-changing chamber P1 and the installation chamber P2 are arranged in sequence along the X-axis direction / Z-axis direction, with the same other parameter dimensions, the opening in this embodiment can be larger, and it is more convenient for users to put storage objects into the temperature-changing chamber P1.

[0076] Taking the installation chamber P2 located behind the temperature-changing chamber P1 as an example, as Figure 2 shown, a partition plate 411 can be provided in the shielding cylinder body 41, for example. The partition plate 411 is erected and divides the interior of the shielding cylinder body 41 into the installation chamber P2 and the temperature-changing chamber P1. Optionally, the partition plate 411 can be made of a metal material. In this way, the shielding cylinder body 41, the shielding door body 44, and the partition plate 411 can shield radio frequency energy, to a certain extent, so that the radio frequency energy is restricted in the temperature-changing chamber P1 and is difficult to leak into the installation chamber P2 to cause magnetic interference to the power amplifier module, which is beneficial to enabling the radio frequency generating device 42 to work normally and ensuring the effectiveness of the radio frequency thawing function.

[0077] Alternatively, the shielding cylinder body 41 can also include a connected sub-cylinder structure and a box structure. Along the Y-axis direction, the box structure is located behind the sub-cylinder structure. Here, the space surrounded by the inner surface of the sub-cylinder structure is the temperature-changing chamber P1, and the internal space of the box structure is the installation chamber P2. Among them, as Figure 2 shown, the cross-sectional shape of the shielding cylinder body 41 along the XZ plane can be rectangular, for example, to adapt to the box body 10. The cross-sectional dimensions of the temperature-changing chamber P1 along the XZ plane and the cross-sectional dimensions of the installation chamber P2 along the XZ plane can be the same, as Figure 2 shown; or, they can also be different.

[0078] According to the different positions of the outflow hole 414 and the return hole 415, the positions of the heat circulation inlet 111 and the heat circulation outlet 112 can also be different, as long as the installation chamber P2 and the air duct intermediate chamber A2 can be connected to form a heat circulation loop. The rectangular installation chamber P2 includes a rear wall P23, a top wall and a bottom wall oppositely arranged along the Z-axis direction, and a first side wall P21 and a second side wall P22 oppositely arranged along the Y-axis direction.

[0079] In some possible ways, the rear wall P23 of the installation chamber P2 can be attached to the air duct cover plate 11, and both the outflow hole 414 and the return hole 415 can penetrate through the rear wall P23 of the installation chamber P2.

[0080] In some possible ways, the outflow hole 414 and the return hole 415 are respectively arranged on two mutually perpendicular surfaces of the installation chamber P2, that is, the center lines of the outflow hole 414 and the return hole 415 are perpendicular. Thus, the direction of air flowing out of the installation chamber P2 and the direction of air flowing into the installation chamber P2 are perpendicular, so that the air needs to change direction and flow to the outflow hole 414 after flowing into the installation chamber P2. This is conducive to promoting the air that has exchanged heat with the evaporator 22 to fully contact the radio frequency generating device 42 after flowing back into the installation chamber P2, so as to carry more heat into the air duct compartment A2 during the next cycle of flow.

[0081] For example, the outflow hole 414 can be arranged on the rear wall P23 of the installation chamber P2, and the return hole 415 can be arranged on the bottom wall / top wall of the installation chamber P2.

[0082] For another example, please refer to Figure 2 and Figure 5 As shown, the dimension of the installation chamber P2 in the X-axis direction can be smaller than the dimension of the variable temperature chamber P1 in the X-axis direction. The first side wall P21 is opposite to the side plate of the box body 10 and there is a gap 115. The outflow hole 414 can be arranged on the rear wall P23 of the installation chamber P2 and is arranged opposite to the heat circulation inlet 111. The return hole 415 is arranged on the first side wall P21, and the heat circulation outlet 112 is opposite to the gap 115. In this way, the air flowing out from the heat circulation outlet 112 flows into the gap 115, and then enters the installation chamber P2 from the return hole 415.

[0083] In this example, on the premise of ensuring that the center lines of the outflow hole 414 and the return hole 415 are perpendicular, by setting a gap 115 between the first side wall P21 and the side plate of the box body 10, the heat circulation outlet 112 and the return hole 415 are reliably connected by using the gap 115.

[0084] Please continue to refer to Figure 2 , the outflow hole 414 can be located at one end of the rear wall P23 of the installation chamber P2 away from the first side wall P21. In this way, it is conducive to extending the flow path of the air flowing out of the installation chamber P2 in the air duct compartment A2, so as to make the air carrying the heat dissipated by the radio frequency generating device 42 flow through both ends of the evaporator 22 in the X-axis direction as much as possible. This is conducive to defrosting the entire evaporator 22.

[0085] In some embodiments of the present disclosure, the outflow hole 414 is located above the return hole 415. Correspondingly, the heat circulation inlet 111 is located above the heat circulation outlet 112.

[0086] It is easy to understand that hot air will flow upward due to volume expansion and low air density. In this embodiment, the outflow hole 414 is designed to be located above the return hole 415, so that the air carrying heat can more easily flow to the outflow hole 414, which is conducive to promoting the reliable inflow of the air carrying heat into the air duct compartment A2 to defrost the evaporator 22.

[0087] In the embodiment where the installation chamber P2 is located behind the variable temperature chamber P1, since the variable temperature chamber P1 is farther from the air duct compartment A2 than the installation chamber P2, in order to enable the variable temperature chamber P1 and the air duct compartment A2 to communicate to form a cold circulation flow path, the air inlet 412 is connected to the cold circulation outlet 114 through the air inlet passage 416, and the air return port 413 is connected to the cold circulation inlet 113 through the air return passage 417. Moreover, both the air inlet passage 416 and the air return passage 417 are located outside the installation chamber P2.

[0088] By arranging both the air inlet passage 416 and the air return passage 417 outside the installation chamber P2, it is possible to prevent cold air from entering the installation chamber P2 through the air inlet passage 416 and the air return passage 417, so as to reduce the risk that the temperature of the installation chamber P2 is too low and the radio frequency generating device 42 cannot work properly. It should also be noted that when the refrigeration device 100 simultaneously has a cold circulation flow path and a hot circulation flow path, since the variable temperature chamber P1, the air inlet passage 416 and the air return passage 417 are all located outside the installation chamber P2, the possibility of the air flowing along the cold circulation flow path flowing into the hot circulation flow path can be reduced.

[0089] In the refrigeration device 100 disclosed herein, the air inlet passage 416 and the air return passage 417 can be directly formed on the shielding cylinder 41, or can be defined and formed by an air duct housing. Here, taking the formation method of the air inlet passage 416 as an example for detailed introduction, the formation method of the air return passage 417 can refer to the formation method of the air inlet passage 416, and this embodiment will not be elaborated herein.

[0090] As an optional method, the air inlet passage 416 can be implemented as being opened in the wall of the shielding cylinder 41, that is, between the inner wall surface and the outer wall surface of the wall. The air inlet end of the air inlet passage 416 penetrates the rear surface of the variable temperature chamber P1 to align and connect with the cold circulation inlet 113 on the air duct cover 11, and the air outlet end of the air inlet passage 416 extends to the air inlet 412. With this design, the air inlet passage 416 does not additionally occupy the space of the storage compartment A1.

[0091] As another optional mode, the temperature changing device 40 may further include an air duct housing, and the air inlet channel 416 may be implemented as being defined by the air duct housing, and the air duct housing is fixedly connected to the shielding cylinder 41. The air duct housing may be arranged outside the shielding cylinder 41. Among them, the air duct housing may be a cylindrical structure, and the space enclosed by the inner surface of the air duct housing is the air inlet channel 416. Of course, the air duct housing may also be implemented as a plate-like structure, and the plate-like air duct housing and the outer surface of the shielding cylinder 41 jointly enclose the air inlet channel 416.

[0092] Compared with machining the air inlet channel 416 in the wall of the shielding cylinder 41 by machining, in this embodiment, the air duct shell can be machined first and then connected to the shielding cylinder 41, which can reduce the difficulty of machining.

[0093] The air duct housing can be connected to the shielding cylinder 41 by bonding, screwing, welding, etc. Alternatively, the air duct housing and the shielding cylinder 41 can also be formed into an integral part by an integral molding process, which can save the assembly process of the air duct housing and the shielding cylinder 41, and can also improve the structural strength of the shielding cylinder 41 without increasing the cost.

[0094] It is easy to understand that the position and extension direction of the air inlet 416 and the return air duct 417 depend on the different positions of the air inlet 412, the return air duct 413, the cold cycle inlet 113 and the cold cycle outlet 114. As long as the variable temperature chamber P1 and the air duct compartment A2 can be connected to form a cold cycle loop. In some embodiments of the present disclosure, please continue to refer to Figure 2 The variable temperature chamber P1 has two side surfaces P13 arranged opposite to each other along the X-axis direction, a top surface P11 and a bottom surface P12 arranged opposite to each other along the Z-axis direction, one end of the top surface P11 and the bottom surface P12 is connected to one of the side surfaces P13, and the other end of the top surface P11 and the bottom surface P12 is connected to the other side surface P13. In addition, the air inlet 412 is arranged near the connection between the top surface P11 and one of the side surfaces P13, and the air return port 413 is arranged near the connection between the bottom surface P12 and the other side surface P13.

[0095] Driven by the driving fan 50, the cold air after heat exchange with the evaporator 22 enters the variable temperature chamber P1 through the air inlet 412. It is understandable that the air density of the cold air is large and it flows downward. Therefore, it can be seen that the air inlet 412 is closer to the top of the variable temperature chamber P1 than the return air port 413, and the return air port 413 is closer to the bottom of the variable temperature chamber P1 than the air inlet 412, that is, the air inlet 412 is located above the return air port 413, so that the cold air entering the variable temperature chamber P1 can easily flow to the return air port 413.

[0096] Meanwhile, since the air inlet 412 is near one of the side surfaces P13 and the air outlet 413 is near the other side surface P13, the air inlet 412 and the air outlet 413 are respectively close to both sides of the temperature-changing chamber P1, which is beneficial to extending the flow path of the cold air in the temperature-changing chamber P1 along the X-axis direction and facilitating the full contact between the cold air and the stored items.

[0097] Among them, the cold cycle outlet 114 and the cold cycle inlet 113 can also be respectively arranged close to the two side plates of the box body 10 accordingly, so that after the air heat-exchanged with the stored items flows back to the air duct chamber A2, the flow path of the air flowing from the cold cycle inlet 113 to the cold cycle outlet 114 in the X-axis direction is larger, which is beneficial to promoting the full heat exchange between the air and the evaporator 22 for refrigeration.

[0098] Among them, the air inlet 412 can be arranged on the side surface P13 of the temperature-changing chamber P1 and close to the top surface P11, or it can also be arranged on the top surface P11 of the temperature-changing chamber P1. Similarly, the air outlet 413 can be arranged on the side surface P13 of the temperature-changing chamber P1 and close to the bottom surface P12, or it can also be arranged on the bottom surface P12 of the temperature-changing chamber P1.

[0099] In a specific embodiment, as Figure 2 shown, the air inlet 412 can be arranged on the top surface P11 of the temperature-changing chamber P1, and the air outlet 413 can be arranged on the bottom surface P12 of the temperature-changing chamber P1. In this example, the cold cycle outlet 114 is located above the cold cycle inlet 113, the air inlet passage 416 is located above the temperature-changing chamber P1, and the air return passage 417 is located below the temperature-changing chamber P1.

[0100] In this way, the center line of the air inlet 412 is parallel to the center line of the air outlet 413, and the cold air entering the temperature-changing chamber P1 can easily flow to the air outlet 413 after diffusing downward.

[0101] In some embodiments of the present disclosure, please refer to Figure 1 、 Figure 2 and Figure 3 shown, the air inlet 412 can be arranged close to the front side of the temperature-changing chamber P1, and the air outlet 413 is close to the rear side of the temperature-changing chamber P1. That is to say, the air inlet 412 is close to the opening of the temperature-changing chamber P1.

[0102] Adopting this design is beneficial to extending the flow path of the cold air in the temperature-changing chamber P1 along the Y-axis direction, and can reduce the possibility that the stored items near the opening cannot be quickly frozen due to being far away from the evaporator 22, so that all the stored items in the temperature-changing chamber P1 can be quickly frozen.

[0103] The shapes and sizes of the above-mentioned air inlet 412, air outlet 413, outflow hole 414 and return hole 415 are not limited.

[0104] In the refrigeration device 100 disclosed herein, a plurality of air inlets 412 and a plurality of air outlets 413 can be arranged in an array on the chamber wall of the variable temperature chamber P1, and the hole diameters of the air inlets 412 and the air outlets 413 are both not greater than 5 mm. Among them, the air inlets 412 and the air outlets 413 can be arranged in a rectangular array, a circular array or an array of other shapes such as a hexagonal array.

[0105] That is to say, the plurality of air inlets 412 and the plurality of air outlets 413 are both arranged in multiple rows and multiple columns, that is, the plurality of air inlets 412 and the plurality of air outlets 413 both have multiple row groups and multiple column groups. Among them, the plurality of air inlets 412 in the same row group and the plurality of air outlets 413 in the same row group are arranged at intervals in the first direction, and the plurality of air inlets 412 in the same column group and the plurality of air outlets 413 in the same column group are arranged at intervals in the second direction, and the first direction and the second direction are perpendicular. Among them, any two adjacent row groups can be aligned or staggered, and any two adjacent column groups can be aligned or staggered.

[0106] The hole diameters of the air inlets 412 and the air outlets 413 are designed to be less than or equal to 5 mm, so that less radio frequency energy leaks from the air inlets 412 and the air outlets 413 to the outside of the variable temperature chamber P1. On this basis, by designing the air inlets 412 and the air outlets 413 to be multiple, the air intake volume and the air outlet volume of the variable temperature chamber P1 are increased.

[0107] That is to say, with this design, the radio frequency shielding ability of the variable temperature chamber P1 and the air volume of the cold circulation flow path can be taken into account at the same time, so as to reliably freeze the stored items quickly.

[0108] Furthermore, the plurality of air inlets 412 form an air intake area, and the plurality of air inlets 412 in the air intake area can be evenly distributed, and the minimum vertical distance between any two adjacent air inlets 412 can be configured to be greater than 0 mm and less than or equal to 3 mm. Taking the air inlets 412 arranged in a rectangular array as an example, the vertical distance between the straight lines where the centers of any two adjacent rows of air inlets 412 are located and the vertical distance between the straight lines where the centers of any two adjacent columns of air inlets 412 are located can be greater than 5 mm and less than or equal to 8 mm.

[0109] As a feasible way, the plurality of air outlets 413 form an air return area, and the plurality of air outlets 413 in the air return area can be evenly distributed, and the minimum vertical distance between any two adjacent air outlets 413 can be configured to be greater than 0 mm and less than or equal to 3 mm. That is to say, the vertical distance between the straight lines where the centers of any two adjacent rows of air outlets 413 are located and the vertical distance between the straight lines where the centers of any two adjacent columns of air outlets 413 are located can be greater than 5 mm and less than or equal to 8 mm.

[0110] On the basis that there are multiple air inlets 412 and air outlets 413, through such a design, the layout density of the air inlets 412 and the air outlets 413 is small, that is, the air inlets 412 and the air outlets 413 are concentratedly distributed, so that the air flowing through each air inlet 412 and each air outlet 413 can converge.

[0111] As in the refrigeration device 100 disclosed in this article, a plurality of outflow holes 414 and a plurality of return holes 415 can be arranged in an array on the chamber wall of the installation chamber P2, and the hole diameters of the outflow holes 414 and the return holes 415 are both not greater than 5 mm. Among them, the outflow holes 414 and the return holes 415 can be arranged in a rectangular array, a circular array or an array of other shapes.

[0112] That is to say, a plurality of outflow holes 414 and a plurality of return holes 415 are both arranged in multiple rows and multiple columns, that is, a plurality of outflow holes 414 and a plurality of return holes 415 both have multiple row groups and multiple column groups. Among them, a plurality of outflow holes 414 located in the same row group and a plurality of return holes 415 located in the same row group are arranged at intervals in the first direction, and a plurality of outflow holes 414 located in the same column group and a plurality of return holes 415 located in the same column group are arranged at intervals in the second direction, and the first direction and the second direction are perpendicular. Among them, any two adjacent row groups can be aligned or staggered, and any two adjacent column groups can be aligned or staggered.

[0113] The hole diameters of the outflow holes 414 and the return holes 415 are designed to be less than or equal to 5 mm, so that less RF energy leaks from the outflow holes 414 and the return holes 415 to the outside of the installation chamber P2. On this basis, by designing the outflow holes 414 and the return holes 415 to be multiple, the air volume of the air outlet and the air inlet of the installation chamber P2 is increased.

[0114] That is to say, with this design, the RF shielding ability of the installation chamber P2 and the air volume of the thermal circulation flow path can be taken into account at the same time, so as to reliably defrost the evaporator 22.

[0115] Furthermore, a plurality of outflow holes 414 form an outflow area, and the plurality of outflow holes 414 in the outflow area can be evenly distributed, and the minimum vertical distance between any two adjacent outflow holes 414 can be constructed to be greater than 0 mm and less than or equal to 3 mm. That is to say, the vertical distance between the straight lines where the centers of any two adjacent rows of outflow holes 414 are located and the vertical distance between the straight lines where the centers of any two adjacent columns of outflow holes 414 are located can be greater than 5 mm and less than or equal to 8 mm.

[0116] As an achievable way, a plurality of return holes 415 form a return region, and the plurality of return holes 415 within the return region can be evenly distributed. The minimum vertical distance between any two adjacent return holes 415 can be configured to be greater than 0 mm and less than or equal to 3 mm. That is to say, the vertical distance between the straight lines where the centers of any two adjacent rows of return holes 415 are located and the vertical distance between the straight lines where the centers of any two adjacent columns of return holes 415 are located can be greater than 5 mm and less than or equal to 8 mm.

[0117] On the basis that there are a plurality of outflow holes 414 and return holes 415, with such a design, the layout density of the outflow holes 414 and return holes 415 is small, that is, the outflow holes 414 and return holes 415 are concentratedly distributed, enabling the air flowing through each outflow hole 414 and each return hole 415 to converge.

[0118] In some embodiments of the present disclosure, please continue to refer to Figure 1 and Figure 3 , the temperature-changing device 40 may further include a drawer 45, and the drawer 45 is movably arranged in the temperature-changing chamber P1. Among them, the drawer 45 can be used to carry storage items. In this example, the drawer door of the drawer 45 can be used as the shielding door body 44.

[0119] The top of the drawer 45 can be open to form an opening. That is to say, the user can apply a pulling force to the drawer 45 so that the drawer 45 is pulled out to be partially located outside the box body 10, then put the storage item into the drawer 45 from the opening, and then apply a pushing force to the drawer 45 so that the drawer 45 moves to the position where the drawer door cooperates with the periphery of the opening to close the opening of the temperature-changing chamber P1 as the shielding door body 44.

[0120] By providing the drawer 45, not only can the opening of the temperature-changing chamber P1 be opened and closed by using the drawer door without additionally providing a shielding door body 44, but also since the drawer 45 can be pulled out to be partially located outside the box body 10, the user can conveniently take and place storage items.

[0121] The installation position of the above-mentioned driving fan 50 is not limited and can be set at any position in the cold circulation flow path as long as it can drive the air to flow along the cold circulation flow path. The driving fan 50 can be a negative pressure fan. In some embodiments of the present disclosure, as Figure 1 and Figure 3 shown, the driving fan 50 can be installed at the air return port 413, for example. With such a design, the driving fan 50 is located downstream of the temperature-changing chamber P1, minimizing the contact between the driving fan 50 and the cold quantity to reduce the driving fan 50 from being affected by the cold quantity and causing the temperature to be too low to work.

[0122] Similarly, the installation position of the above-mentioned fan 60 is not limited either and can be set at any position of the heat circulation flow path as long as it can drive air to flow along the heat circulation flow path. The fan 60 can be a negative pressure fan. In some embodiments of the present disclosure, as Figure 5 shown, the fan 60 can be set in the installation chamber P2, for example, and set at the outflow hole 414.

[0123] In the embodiment where the fan 60 is arranged in the air duct compartment A2, the fan 60 will occupy the space of the air duct compartment A2, and the cold air after heat exchange with the evaporator 22 flows through the fan 60. After the refrigeration device 100 operates for a period of time, the fan 60 is likely to be supercooled and unable to operate normally. In this embodiment, by setting the fan 60 in the installation chamber P2, on the one hand, the fan 60 does not occupy the space of the air duct compartment A2, and on the other hand, the possibility of the fan 60 contacting the cold air can be reduced, so as to reduce the probability that the fan 60 cannot work due to being affected by the cold quantity and the temperature being too low.

[0124] In any of the above embodiments, the refrigeration compartment A11 can be a refrigerating compartment or a freezing compartment. The value range of the preset preservation temperature of the stored items in the refrigerating compartment can be from 0°C to +8°C, and the value range of the preset preservation temperature of the stored items in the freezing compartment can be from -20°C to -15°C.

[0125] In some embodiments of the present disclosure, there can be multiple refrigeration compartments A11, and at least one of the multiple refrigeration compartments A11 is a refrigerating compartment and at least one is a freezing compartment. That is, the refrigeration device 100 has a variable temperature chamber P1, a refrigerating compartment and a freezing compartment at the same time, and the functions of the refrigeration device 100 are rich. Among them, the variable temperature chamber P1, the refrigerating compartment and the freezing compartment are arranged in sequence along the Z-axis direction, and the variable temperature chamber P1 can be located between the refrigerating compartment and the freezing compartment.

[0126] As an implementable way, the variable temperature chamber P1 and an adjacent refrigeration compartment A11 (for example, a refrigerating compartment or a freezing compartment) can be refrigerated by the same evaporator 22.

[0127] When the refrigeration device 100 of this embodiment works, when both the refrigeration compartment A11 and the variable temperature chamber P1 need to be refrigerated, the driving fan 50 and the circulation fan operate simultaneously to drive the cold air after heat exchange with the evaporator 22 in the air duct compartment A2 to flow to the refrigeration compartment A11 and the variable temperature chamber P1. And the rotation speed of the driving fan 50 can be controlled to be greater than that of the circulation fan, so that the cold quantity delivered to the variable temperature chamber P1 is greater than the cold quantity delivered to the refrigeration compartment A11, so as to enable the stored items in the variable temperature chamber P1 to reach the quick-freezing temperature while the stored items in the refrigeration compartment A11 can reach the preset preservation temperature.

[0128] As another implementable way, please continue to refer toFigure 1 The evaporator 22 can be provided in multiple numbers. The variable temperature chamber P1 and an adjacent refrigerating chamber A11 can be refrigerated separately through two evaporators 22 respectively.

[0129] Compared with the situation where the variable temperature chamber P1 and an adjacent refrigerating chamber A11 share the same evaporator 22, in this embodiment, the variable temperature chamber P1 and an adjacent refrigerating chamber A11 can be refrigerated independently, which can improve the control accuracy of the temperatures of the variable temperature chamber P1 and the adjacent refrigerating chamber A11.

[0130] As mentioned above, the above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A refrigeration device, characterized in that: include: The box body is internally divided into a storage compartment and an air duct compartment, wherein the air duct compartment has a heat circulation inlet and a heat circulation outlet; An evaporator is arranged in the air duct room; A temperature-changing device is housed in the storage room; the temperature-changing device comprises a shielding cylinder, a shielding door, a radio frequency generating device and a radio frequency transmitting component; the interior of the shielding cylinder is divided into a temperature-changing chamber and an installation chamber which are isolated from each other, the front side of the temperature-changing chamber has an opening, and the shielding door can open and close the opening; an outflow hole and a return hole are provided on the cavity wall of the installation chamber, the outflow hole is communicated with the heat cycle inlet, and the heat cycle outlet is communicated with the return hole; the radio frequency generating device is arranged in the installation chamber, and can controllably provide power to the radio frequency transmitting component arranged in the temperature-changing chamber, and the radio frequency transmitting component is used to radiate radio frequency energy into the temperature-changing chamber, so that the stored objects in the temperature-changing chamber are thawed; as well as A fan is used to drive air to flow in the installation chamber and the air duct chamber.

2. The refrigeration equipment according to claim 1, characterized in that: It also includes an air duct cover plate arranged in the box body, the air duct cover plate divides the box body into the storage compartment and the air duct compartment, and the air duct compartment is located at the rear side of the storage compartment; The heat circulation inlet and the heat circulation outlet are both arranged through the air duct cover plate.

3. The refrigeration equipment according to claim 2, characterized in that: The center line of the outflow hole is perpendicular to the center line of the return hole.

4. The refrigeration equipment according to claim 3, characterized in that: The outflow hole is located above the return hole, and the heat cycle inlet is located above the heat cycle outlet.

5. The refrigeration equipment according to claim 3, characterized in that: The outflow hole is arranged on the rear wall of the installation chamber and is opposite to the heat circulation inlet; the installation chamber has a first side wall and a second side wall opposite to each other, the first side wall is opposite to the side plate of the box body and there is a gap, the reflux hole is arranged on the first side wall, and the heat circulation outlet is opposite to the gap.

6. The refrigeration device according to claim 5, characterized in that: The outflow hole is located at an end of the rear wall facing away from the first side wall.

7. The refrigeration device according to claim 1, characterized in that: A plurality of the outflow holes and a plurality of the return holes are distributed in an array on the cavity wall of the installation cavity, and the diameters of the outflow holes and the return holes are both no greater than 5 mm.

8. The refrigeration device according to claim 7, characterized in that: The plurality of outflow holes form an outflow area, the plurality of outflow holes in the outflow area are evenly distributed, and the minimum vertical distance between any two adjacent outflow holes is greater than 0 mm and less than or equal to 3 mm; And / or, the plurality of reflow holes form a reflow area, the plurality of reflow holes in the reflow area are evenly distributed, and the minimum vertical distance between any two adjacent reflow holes is greater than 0 mm and less than or equal to 3 mm.

9. The refrigeration device according to claim 1, characterized in that: The fan is disposed in the installation chamber and at the outflow hole.

10. The refrigeration equipment according to any one of claims 2 to 6, characterized in that: The air duct cover plate is provided with a cold cycle inlet and a cold cycle outlet, and the cavity wall of the temperature-changing chamber is provided with an air inlet and an air return port; the air inlet is connected to the cold cycle outlet, and the air return port is connected to the cold cycle inlet; The refrigeration device further comprises a driving fan, which is used to drive air to flow in the temperature-changing chamber and the air duct chamber, so that the stored objects in the temperature-changing chamber can reach the quick-freezing temperature; The driving fan and the radio frequency generating device can be controlled to operate, and when one of the driving fan and the radio frequency generating device is in operation, the other stops operating.

11. The refrigeration device according to claim 10, characterized in that: The storage compartment includes at least one refrigeration compartment, and the temperature-changing chamber and the at least one refrigeration compartment are arranged in sequence along the vertical direction; The variable temperature chamber and the adjacent refrigeration chamber are cooled by the same evaporator; or, the evaporator is provided with a plurality of evaporators, and the variable temperature chamber and the adjacent refrigeration chamber are cooled by two evaporators respectively; The refrigeration equipment further includes a circulating fan, which can controllably send the air in the air duct room after heat exchange with the evaporator into the refrigeration room, so that the stored objects in the refrigeration room can reach a preset preservation temperature, which is greater than the quick-freezing temperature.

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