Temperature control device, refrigerator and control method thereof

Abstract

The invention relates to a temperature control device, a refrigerator and a control method of the refrigerator, and the temperature control device comprises a freezing chamber provided with a freezing air duct; the refrigeration chamber is provided with a refrigeration air duct; the semiconductor module is arranged at the end, close to the refrigeration air duct, of the freezing air duct and provided with a cold end and a hot end which are oppositely arranged after being powered on. The composite heat conduction structure comprises a heat conductor which is rotatably arranged at one end, close to the freezing air duct, of the refrigeration air duct; the first temperature detection device is configured to detect the first temperature of the freezing chamber; the controller is electrically connected with the first temperature detection device, the refrigeration compressor and the freezing compressor, and can assist the freezing chamber in rapid refrigeration when the thermal load of the freezing chamber is large, so that the high-speed operation time of the freezing compressor is shortened, the energy consumption is reduced, meanwhile, long noise caused by too long acceleration time of the freezing compressor can be avoided, and the service life of the freezing compressor is prolonged. And the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a temperature control device, a refrigerator and a control method thereof. Background Art

[0002] At present, most refrigerators on the market are single compressor single system, dual compressor dual system or triple system. Among them, the dual compressor dual system on the market is mostly designed as follows: the refrigeration compartment, the freezing compartment and the variable temperature compartment are each equipped with an evaporator to provide cooling for the corresponding compartment, the refrigeration system where the refrigeration evaporator is located is equipped with a corresponding refrigeration compressor, and the refrigeration system where the freezing evaporator and the variable temperature evaporator are located is equipped with a corresponding refrigeration compressor. When this system is used in large-capacity refrigerators, it is easy to have problems such as too low refrigeration temperature and too slow temperature drop in the variable temperature compartment and the freezing compartment.

[0003] Among them, when the indoor ambient temperature is high or the demand for refrigeration capacity is large, if the refrigeration evaporator alone cools the variable temperature compartment and the freezer compartment, on the one hand, the cooling capacity provided by the refrigeration compressor is not enough to quickly reduce the temperature of the freezer compartment and the variable temperature compartment, and on the other hand, the refrigeration compressor will continue to run, causing the compressor to speed up. Long-term speeding up of the compressor leads to increased power consumption, increased noise, and reduced compressor service life. Summary of the invention

[0004] The present application provides a temperature control device, a refrigerator and a control method thereof, so as to solve the technical problems that, when the heat load of the freezer compartment of the existing refrigerator is large, the cooling capacity provided by the refrigeration compressor is insufficient to quickly reduce the temperature of the freezer compartment, and at the same time, the refrigeration compressor will continue to run so that the compressor will speed up. The long-term speed-up of the compressor leads to increased power consumption, reduced compressor service life, increased noise caused by the speed-up of the compressor, and poor user experience.

[0005] In a first aspect, the present application provides a temperature control device for controlling the temperature of a refrigerator, the refrigerator comprising a refrigerating compressor and a freezing compressor, the temperature control device comprising: a freezing compartment provided with a freezing air duct; a cold storage compartment provided with a cold storage air duct; a semiconductor module provided at one end of the freezing air duct close to the cold storage air duct, the semiconductor module having a cold end and a hot end provided opposite to each other after being powered on; a composite heat conductive structure comprising a heat conductor, the heat conductor being rotatably provided at one end of the cold storage air duct close to the freezing air duct; a first temperature detection device configured to detect a first temperature of the freezing compartment; and a controller, the controller being electrically connected to the first temperature detection device, the refrigerating compressor and the freezing compressor, when the freezing compressor is in an on state, the controller is configured to, if the first temperature of the freezing compartment is greater than a first temperature threshold, control the cold storage compressor to be in an on state, and control the first end of the heat conductor to rotate relative to the cold storage air duct close to the semiconductor module, so that the heat conductor has a first state connected to the hot end of the semiconductor module, at least a portion of the cold amount of the cold storage air duct enters the freezing air duct from the heat conductor through the semiconductor module, so that the freezing compartment is quickly cooled.

[0006] In one possible implementation, the refrigeration air duct is provided with a first vent connected to the freezing air duct, and the heat conductor is rotatably provided at the first vent to control the opening or closing of the first vent; when the heat conductor is in a first state, the first vent is in an open state, so that a part of the cold air in the refrigeration air duct enters the freezing air duct by heat convection.

[0007] In one possible implementation, the composite heat conductive structure includes a driving member, a turntable is provided at the second end of the heat conductor, the turntable is rotatably connected to the refrigeration air duct, and the power output end of the driving member is transmission-connected to the turntable to drive the turntable to drive the first end of the heat conductor to rotate close to the semiconductor module and reach the first state.

[0008] In one possible implementation, the controller is configured to, when the first temperature of the freezer compartment is less than a second temperature threshold, control the refrigeration compressor to be in an off state, and simultaneously control the first end of the heat conductor to rotate away from the semiconductor module so that the heat conductor has a second state disconnected from the semiconductor module, in which the first vent is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold.

[0009] In a possible implementation, a second temperature detection device and a heater are included, the second temperature detection device is configured to detect the second temperature of the refrigerating compartment, and the heater is arranged in the refrigerating compartment; a controller is electrically connected to the second temperature detection device and the heater, and when the refrigerating compressor is in an on state and the first temperature of the refrigerating compartment is greater than a first temperature threshold, the controller is configured to control the heater to be in an on state if the heat conductor is in the first state and the second temperature of the refrigerating compartment is less than a third temperature threshold, wherein the third temperature threshold is greater than 0°C.

[0010] In one possible implementation, when the refrigeration compressor is in a fault state, the controller is configured to control the freezing compressor to be in an on state, and control the first end of the heat conductor to rotate relative to the refrigeration air duct away from the semiconductor module, so that the heat conductor has a third state disconnected from the semiconductor module. In the third state, the first vent is in an open state.

[0011] In a possible implementation, the temperature control device includes a variable temperature compartment, the variable temperature compartment is provided with a variable temperature air duct, the variable temperature air duct is provided with a second vent connected to the freezing air duct, and the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent; the controller is electrically connected to the variable temperature damper, and when the freezing compressor is in a fault state, the controller is configured to control the variable temperature damper to be in a closed state, and at the same time control the refrigeration compressor to be in an open state, and the heat conductor is in a first state.

[0012] In one possible implementation, the semiconductor module includes a semiconductor refrigeration plate, which has a cold end and a hot end that are relatively arranged. The cold end of the semiconductor refrigeration plate is provided with a heat transfer element, and the heat transfer element is configured to transfer the cold energy of the semiconductor refrigeration plate to the freezer compartment. The hot end of the semiconductor refrigeration plate is detachably connected to the first end of the heat conductor.

[0013] In a possible implementation, the semiconductor refrigeration plate includes an N-type semiconductor element and a P-type semiconductor element which are sequentially connected in series to form a thermocouple, and a power supply module is arranged between the N-type semiconductor element at the head end and the P-type semiconductor element at the end end.

[0014] In a second aspect, the present application provides a refrigerator, comprising a refrigeration compressor, a freezing compressor and a temperature control device as described above, wherein the temperature control device is used to control the temperature of the refrigerator.

[0015] In one possible implementation, it includes a first condenser, a first evaporator and a first throttling device, the exhaust port of the refrigeration compressor and the refrigerant inlet of the first condenser are connected by a first pipeline, the refrigerant outlet of the first condenser is connected to the inlet of the first throttling device, the outlet of the first throttling device is connected to the refrigerant inlet of the first evaporator, and the refrigerant outlet of the first evaporator is connected to the air inlet of the refrigeration compressor.

[0016] In a possible implementation, the refrigerator includes a second condenser, a second evaporator, a second throttling device, a third evaporator and a third throttling device, the exhaust port of the refrigeration compressor is connected to the refrigerant inlet of the second condenser, the refrigerant outlet of the second condenser is connected to the inlet of the second throttling device through a second pipeline, the outlet of the second throttling device is connected to the refrigerant inlet of the second evaporator, and the refrigerant outlet of the second evaporator is connected to the air inlet of the refrigeration compressor; the inlet of the third throttling device is connected to the second pipeline, the outlet of the third throttling device is connected to the refrigerant inlet of the third evaporator, and the outlet of the third evaporator is connected to the refrigerant inlet of the second evaporator; the temperature control device includes a variable temperature air duct, the third evaporator is arranged in the variable temperature air duct, and the second evaporator is arranged in the refrigeration air duct.

[0017] In a third aspect, the present application provides a refrigerator control method, which is applied to the refrigerator as described above, and is characterized in that the control method includes: obtaining a first temperature of the freezer compartment and an operating condition of the refrigerator; if the freezer compressor of the refrigerator is in an on state, and the first temperature of the freezer compartment is greater than a first temperature threshold, controlling the refrigeration compressor to be in an on state, and controlling the first end of the heat conductor to rotate relative to the refrigeration air duct close to the semiconductor module, so that the heat conductor has a first state connected to the hot end of the semiconductor module, and at least a portion of the cold energy of the refrigeration air duct enters the freezing air duct from the heat conductor through the semiconductor module, so that the freezer compartment is quickly cooled down.

[0018] In a possible implementation, the refrigeration air duct is provided with a first vent connected to the freezing air duct, and the heat conductor is rotatably provided at the first vent. The control method includes: if the first temperature of the freezing compartment is lower than the second temperature threshold, the refrigeration compressor is controlled to be in a closed state, and at the same time, the first end of the heat conductor is controlled to rotate away from the semiconductor module so that the heat conductor has a second state disconnected from the semiconductor module, and in the second state, the first vent is in a closed state, wherein the first temperature threshold is higher than the second temperature threshold.

[0019] In a possible implementation, the temperature control device includes a second temperature detection device and a heater, and the control method includes: obtaining the second temperature of the refrigerating compartment; when the refrigerating compressor is in an on state and the first temperature of the refrigerating compartment is greater than a first temperature threshold, if the heat conductor is in a first state and the second temperature of the refrigerating compartment is less than a third temperature threshold, controlling the heater to be in an on state, wherein the third temperature threshold is greater than the first temperature threshold.

[0020] In a possible implementation, the method includes: if the second temperature of the refrigerated compartment is greater than a fourth temperature threshold, controlling the heater to be in an off state, wherein the fourth temperature threshold is greater than the third temperature threshold.

[0021] In one possible implementation, the temperature control device includes a variable temperature compartment, the variable temperature compartment is provided with a variable temperature air duct, the variable temperature air duct is provided with a second vent connected to the freezing air duct, the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent, and the control method includes: if the freezing compressor fails, controlling the variable temperature damper to be in a closed state, and at the same time controlling the refrigeration compressor to be in an open state, and the heat conductor is in a first state.

[0022] In one possible implementation, it includes: if the refrigeration compressor fails, the freezing compressor is controlled to be in an on state, and the first end of the heat conductor is controlled to rotate relative to the refrigeration air duct away from the semiconductor module, so that the heat conductor has a third state disconnected from the semiconductor module, and in the third state, the first vent is in an open state.

[0023] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0024] The temperature control device, refrigerator and control method thereof provided by the embodiment of the present application, the refrigerator has a steady-state operation mode and a non-steady-state operation mode. When the refrigerator is in the steady-state operation mode, it indicates that the refrigerator has been powered on for a long time and the amount of frozen food has not changed much. At this time, the heat load of the refrigerator is small, the refrigeration compressor operates normally and provides coldness to the refrigeration air duct, and the freezing compressor operates normally and provides coldness to the freezing air duct or the variable temperature air duct. If the freezing compressor is in the on state, and the first temperature of the freezing chamber is greater than the first temperature threshold, the problem of the freezing compressor failure is eliminated, indicating that the refrigerator has just been powered on or a large amount of food has just been placed in the freezing chamber of the refrigerator, and the heat load is large. In order to reach the target working temperature of the freezing chamber, the freezing compressor will increase the speed and continue to operate. The refrigerator is in the non-steady-state operation mode, then the refrigeration compressor is controlled to be in the on state, and the first end of the heat conductor is controlled to rotate relative to the refrigeration air duct in the direction close to the semiconductor module, so that the first end of the heat conductor is connected to the hot end of the semiconductor module, and the heat conductor is in the first state. When the semiconductor module is powered on, it can cool quickly, so that it has a hot end and a cold end that are relatively set. At least a part of the coldness of the refrigeration air duct enters the freezing air duct through the second end of the heat conductor through the first end of the heat conductor and the semiconductor module by heat conduction. The first end of the heat conductor is connected to the hot end of the semiconductor module, so that the hot end of the semiconductor reaches about 2°C, and the cold end of the semiconductor module can reach as low as -18°C. The cold end of the semiconductor module can compensate a certain amount of coldness to the freezing air duct. This coldness enters the freezing chamber from the freezing air duct to assist in rapid cooling of the freezing chamber, thereby shortening the high-speed operation time of the refrigeration compressor and reducing energy consumption. At the same time, it can avoid the refrigeration compressor from speeding up for too long and generating long noise, thereby improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 A schematic diagram of the structure of a temperature control device provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 The schematic diagram of the working principle of the temperature control device shown is shown, wherein the direction of the arrow is the direction of air flow;

[0030] Figure 3 for Figure 1 A schematic structural diagram of a composite heat-conducting structure of a temperature control device is shown, wherein the heat conductor is in a first state;

[0031] Figure 4 for Figure 1 A schematic structural diagram of a composite heat-conducting structure of a temperature control device is shown, wherein the heat conductor is in a second state;

[0032] Figure 5 for Figure 1 A schematic structural diagram of a composite heat-conducting structure of a temperature control device is shown, wherein the heat conductor is in a third state;

[0033] Figure 6 for Figure 1 A schematic structural diagram of a semiconductor module of a temperature control device is shown;

[0034] Figure 7 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0035] Figure 8 for Figure 7 The working principle of the refrigerator is shown Figure 1 , where the arrow direction is the refrigerant flow direction;

[0036] Fig. 9 for Figure 7 The working principle of the refrigerator is shown Figure 2 , where the arrow direction is the refrigerant flow direction;

[0037] Fig.10 A flowchart of a refrigerator control method provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100. Temperature control device;

[0040] 1. Freezer compartment; 11. Freezer air duct;

[0041] 2. Refrigeration compartment; 21. Refrigeration air duct; 211. First ventilation opening;

[0042] 3. Semiconductor module; 301. Cold end; 302. Hot end; 31. Semiconductor cooling sheet; 32. Heat transfer element; 33. N-type semiconductor element; 34. P-type semiconductor element; 35. Power supply module;

[0043] 4. Composite heat-conducting structure; 41. Heat conductor; 411. First end; 412. Second end; 413. Turntable;

[0044] 5. Variable temperature chamber;

[0045] 600, refrigerator; 601, refrigeration compressor; 602, freezing compressor; 603, first condenser; 604, first evaporator; 605, first throttling device; 606, refrigeration fan; 607, first pipeline; 608, second condenser; 609, second evaporator; 610, second throttling device; 611, third evaporator; 612, third throttling device; 613, freezing fan; 614, second pipeline; 615, heater. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0048] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0049] In the related art, if the refrigerator is just powered on or a large amount of food that needs to be frozen is just placed in the freezer compartment, the heat load of the freezer compartment is relatively large. If the refrigeration compressor cools the freezer compartment alone at this time, in order to achieve the target temperature of the freezer compartment set by the user, the refrigeration compressor will run continuously. In this process, in addition to running continuously, the refrigeration compressor may increase its speed. On the one hand, the cooling capacity provided by the refrigeration compressor is not enough to quickly reduce the temperature of the freezer compartment. On the other hand, the refrigeration compressor will continue to run, causing the compressor to speed up. Long-term speed-up of the compressor leads to increased power consumption, reduced compressor service life, increased noise caused by the speed-up of the compressor, and poor user experience.

[0050] In order to solve the technical problems that in the existing refrigerator, when the heat load of the freezer compartment is large, the cooling capacity provided by the refrigeration compressor is insufficient to quickly reduce the temperature of the freezer compartment, and at the same time the refrigeration compressor will continue to run to cause the compressor to speed up, and the long-term speed-up of the compressor will increase the power consumption and reduce the service life of the compressor. The noise caused by the speed-up of the compressor will increase, and the user experience will be poor, the application provides a temperature control device, a refrigerator and a control method thereof, which can assist in rapid cooling of the freezer compartment when the heat load of the freezer compartment is large, thereby shortening the high-speed operation time of the refrigeration compressor and reducing energy consumption. At the same time, it can avoid the long speed-up time of the refrigeration compressor and the long noise generated, thereby improving the user experience.

[0051] Figure 1 and Figure 2 A temperature control device 100 provided in the present application is arranged between a refrigerating compartment 2 and a freezing compartment 1 of a refrigerator 600. The refrigerator 600 includes a refrigerating compressor 601 and a freezing compressor 602. The temperature control device 100 includes a freezing air duct 11, a refrigerating air duct 21, a semiconductor module 3, a composite heat-conducting structure 4, a first temperature detection device and a controller. The freezing compartment 1 is provided with a freezing air duct 11 connected to the freezing compartment 1; the refrigerating compartment 2 is provided with a refrigerating air duct 21 connected to the refrigerating compartment 2; the semiconductor module 3 is arranged at one end of the freezing air duct 11 close to the refrigerating air duct 21, and the semiconductor module 3 has a cold end 301 and a hot end 302 arranged oppositely after being powered on; the composite heat-conducting structure 4 includes a heat conductor 41, and the heat conductor 41 is rotatably arranged at the end of the refrigerating compartment 2 close to the freezing compartment 1. the first temperature detection device is configured to detect a first temperature T1 of the freezing chamber 1; the controller is electrically connected to the first temperature detection device, the refrigeration compressor 601 and the freezing compressor 602. When the freezing compressor 602 is in the on state, the controller is configured to, if the first temperature T1 of the freezing chamber 1 is greater than the first temperature threshold Tm1, control the refrigeration compressor 601 to be in the on state, and control the first end 411 of the heat conductor 41 to rotate relative to the refrigeration air duct 21 close to the semiconductor module 3, so that the heat conductor 41 has a first state connected to the hot end 302 of the semiconductor module 3, and at least a part of the cold energy of the refrigeration air duct 21 enters the freezing air duct 11 from the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3, so that the freezing chamber 1 is quickly cooled.

[0052] The refrigerator 600 has a steady-state operation mode and a non-steady-state operation mode. When the refrigerator 600 is in the steady-state operation mode, it indicates that the refrigerator 600 is powered on for a long time and the amount of frozen food does not change much. At this time, the heat load of the refrigerator 600 is small, and the refrigeration compressor 601 operates normally and provides cold energy to the refrigeration air duct 21. The cold energy enters the refrigeration compartment 2 from the refrigeration air duct 21, so that the refrigeration compartment 2 is cooled to its target working temperature. The target working temperature of the refrigeration compartment 2 is 2°C to 8°C, so that the food stored in the refrigeration compartment 2 is refrigerated and preserved; the freezing compressor 602 operates normally and provides cold energy to the freezing air duct 11. The cold energy enters the freezing compartment 1 from the freezing air duct 11, so that the freezing compartment 1 is cooled to its target working temperature. The target working temperature of the freezing compartment 2 is -24°C to -18°C, so that the food stored in the freezing compartment 1 is frozen and preserved. Of course, the refrigerator 600 may also be provided with a variable temperature compartment 5, the temperature control device 100 includes a variable temperature air duct connected to the variable temperature compartment 5, the refrigeration compressor 602 operates normally and provides cold air to the variable temperature air duct at the same time, the cold air enters the variable temperature compartment 5 from the variable temperature air duct, so that the variable temperature compartment 5 is cooled to its target working temperature. The target working temperature of the variable temperature compartment 5 is -24°C to 4°C, and it has a wide temperature range, so that the food stored in the variable temperature compartment 5 can be refrigerated or frozen for freshness.

[0053] If the refrigeration compressor 602 is in the on state and T1>Tm1, the refrigeration compressor 602 is not faulty, indicating that the refrigerator 600 has just been powered on or a large amount of food has just been put into the freezer compartment 1 of the refrigerator 600, and the heat load is large. In order to reach the target operating temperature of the freezer compartment 1, the refrigeration compressor 602 will increase the speed and continue to run, and the refrigerator 600 is in a non-steady-state operation mode. Then, the refrigeration compressor 601 is controlled to be in the on state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 in the direction close to the semiconductor module 3, so that the first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3. At this time, the heat conductor 41 is in the first state. When the semiconductor module 3 is powered on, it can quickly cool down, so that it has a hot end 302 and a cold end 301 that are relatively set. At least a part of the coldness of the refrigeration air duct 21 enters the freezing air duct 11 through the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction. The first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3, so that the hot end 302 of the semiconductor reaches about 2°C, and the cold end 301 of the semiconductor module 3 can reach a minimum of -18°C. The cold end 301 of the semiconductor module 3 can compensate a certain amount of coldness to the freezing air duct 11. This coldness enters the freezing compartment 1 from the freezing air duct 11 to assist the freezing compartment 1 in rapid cooling, thereby shortening the high-speed operation time of the freezing compressor 602 and reducing energy consumption. At the same time, it can avoid the freezing compressor 602 from speeding up for too long and generating long noise, thereby improving user experience.

[0054] Specifically, Tm1=T0+ΔT1, T0 is the target operating temperature of the freezing compartment 1, and ΔT1 is the non-steady-state start-stop temperature difference. It should be noted that T0 can be set to -24°C to -18°C, and the user can set the value of T0 through the touch panel on the refrigerator 600. The specific setting process and working principle can refer to the existing technology and will not be repeated here. △ T1 can be changed according to the ambient temperature of the refrigerator 600 and the status of the refrigerator 600 prototype. △ T1 is set to 5°C to 10°C, for example, ΔT2 can be set to 6°C, 7°C, 8°C, 9°C, etc.

[0055] Furthermore, if Figure 1 As shown, the refrigeration air duct 21 is provided with a first vent 211 communicating with the freezing air duct 11, and the heat conductor 41 is rotatably provided at the first vent 211 to control the opening or closing of the first vent 211; Figure 3 As shown, in the first state, the heat conductor 41 has a first end 411 extending in the vertical direction, that is, the heat conductor 41 is substantially perpendicular to the first vent 211, so that the first vent 211 is in an open state, so that a portion of the cold air in the refrigeration air duct 21 enters the freezing air duct 11 by heat convection, and the cold air enters the freezing compartment 1 from the freezing air duct 11, thereby assisting the freezing compartment 1 in rapid cooling, further shortening the high-speed operation time of the freezing compressor 602, reducing energy consumption, and preventing the freezing compressor 602 from speeding up for too long and generating long noise, thereby improving user experience.

[0056] The freezing air duct 11 is also provided with a freezing fan 613. When the freezing fan 613 is turned on, a part of the cold air in the refrigeration air duct 21 enters the freezing air duct 11 by heat convection under the action of negative pressure. Since the freezing air duct 11 is connected to the freezing compartment 1, the cold air enters the freezing compartment 1, thereby reducing the temperature of the freezing compartment 1.

[0057] In addition, the hot end 302 of the semiconductor module 3 is arranged close to the first vent 211, and the hot end 302 of the semiconductor module 3 is arranged away from the first vent 211. Since the hot end 302 of the semiconductor module 3 is arranged close to the first vent 211, the first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3, so that the hot end 302 of the semiconductor reaches about 2°C, and the cold end 301 of the semiconductor module 3 is arranged away from the first vent 211, then the cold end 301 of the semiconductor module 3 can reach a minimum of -18°C, and the cold end 301 of the semiconductor module 3 can compensate a certain amount of coldness to the freezing air duct 11, so as to assist the freezing chamber 1 in rapid refrigeration.

[0058] In some embodiments, Figure 3As shown, the composite heat-conducting structure 4 includes a driving member, and a turntable 413 is provided at the second end 412 of the heat conductor 41. The turntable 413 is rotatably connected to the refrigeration air duct 21. The power output end of the driving member is transmission-connected to the turntable 413, so as to drive the turntable 413 to drive the first end 411 of the heat conductor 41 to rotate close to the semiconductor module 3 and reach the first state. The controller is electrically connected to the driving member, and by controlling the driving member to output power, the driving member drives the turntable 413 to rotate, thereby driving the first end 411 of the heat conductor 41 to rotate close to the semiconductor module 3 and reach the first state, thereby realizing the control of the movement process of the heat conductor 41. The driving member can adopt an existing servo motor, and the output shaft of the servo motor is transmission-connected to the turntable 413 to drive the turntable 413 to rotate, such as Figure 3 , the turntable 413 rotates around the R axis, thereby driving the first end 411 of the heat conductor 41 to rotate close to the semiconductor module 3 and reach the first state, so that the first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3, and a part of the cold energy of the refrigerated compartment 2 enters the freezing air duct 11 through the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction. At the same time, the first vent 211 is in an open state, so that a part of the cold energy of the refrigerated air duct 21 enters the freezing air duct 11 by heat convection. These cold energy enters the freezing compartment 1 from the freezing air duct 11, assisting the freezing compartment 1 to quickly refrigerate, shortening the high-speed operation time of the refrigeration compressor 602, reducing energy consumption, and preventing the refrigeration compressor 602 from speeding up for too long and generating long noise.

[0059] In some embodiments, the controller is configured to, when the first temperature T1 of the freezing chamber 1 is less than the second temperature threshold Tm2, ​​control the freezing compressor 602 to be in the off state, and control the first end 411 of the heat conductor 41 to rotate away from the semiconductor module 3, so that the heat conductor 41 has a second state disconnected from the semiconductor module 3, such as Figure 4 As shown, in the second state, the first vent 211 is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold. If T1<Tm2, it indicates that the freezing compartment 1 has reached its target operating temperature, at which time the freezing compressor 602 is controlled to stop, and the first end 411 of the heat conductor 41 is controlled to rotate away from the semiconductor module 3, so that the heat conductor 41 is in the second state, the first end 411 of the heat conductor 41 extends in the horizontal direction, so that the first vent 211 is in a closed state, the refrigeration air duct 21 and the freezing air duct 11 are not connected, the refrigerator 600 is in a steady-state operation mode, and the refrigeration compressor 601 only provides cold air to the refrigeration air duct 21, so that the refrigeration compartment 2 operates at its target operating temperature, thereby reducing the energy consumption of the entire machine.

[0060] Specifically, Tm2=T0+ΔT2, T0 is the target operating temperature of the freezing chamber 1, ΔT2 is the steady-state start-stop temperature difference. It should be noted that ΔT2 can be changed according to the ambient temperature of the refrigerator 600 and the state of the refrigerator 600 prototype. △ T2 is set to 1°C to 5°C. For example, ΔT2 can be set to 1°C, 2°C, 3°C, 4°C, etc.

[0061] If the refrigerator 600 is just powered on or a large amount of heat load is put into it, the refrigeration compressor 601 needs to be turned on to assist the freezing chamber 1 in refrigerating. Since it takes a certain amount of time for the freezing chamber 1 to reach its target operating temperature, the refrigeration compressor 601 is turned on for a long time, and the temperature of the refrigeration chamber 2 is prone to zero crossing. In order to prevent the temperature of the refrigeration chamber 2 from crossing zero, a heater 615 is further provided in some embodiments of the present application, and the specific design is described as follows.

[0062] In some embodiments, the temperature control device 100 includes a second temperature detection device and a heater 615 ( Figure 8 ), the second temperature detection device is configured to detect the second temperature of the refrigerated compartment 2, and the heater 615 is arranged in the refrigerated compartment 2; the controller is electrically connected to the second temperature detection device and the heater 615, and when the refrigeration compressor 602 is in the on state and the first temperature of the refrigerated compartment 1 is greater than the first temperature threshold, the controller is configured to control the heater 615 to be in the on state if the heat conductor 41 is in the first state and the second temperature of the refrigerated compartment 2 is less than the third temperature threshold, wherein the third temperature threshold Tm3 is greater than 0°C. The heater 615 can adopt a heating device such as a resistance wire, an electromagnetic induction heater 615 in the prior art, and the specific structure and working principle can refer to the prior art, which will not be elaborated in this application. Specifically, Tm3>0°C, and Tm3 can be set to 2°C. It can be understood that, when the refrigeration compressor 602 is in the on state and the first temperature of the freezing chamber 1 is greater than the first temperature threshold, if the heat conductor 41 is in the first state and T2<Tm3, it means that the second temperature of the refrigerating chamber 2 is too low. At this time, the heater 615 is controlled to be in the on state to provide heat to the refrigerating chamber 2, so that the second temperature of the refrigerating chamber 2 rises, thereby preventing the temperature of the refrigerating chamber 2 from crossing zero, and ensuring the freshness of the food stored in the refrigerating chamber 2.

[0063] Further, if the second temperature of the refrigerated compartment 2 is greater than the fourth temperature threshold Tm4, the heater 615 is controlled to be in an off state, wherein Tm4>Tm3. Specifically, the fourth temperature threshold is lower than the maximum target operating temperature of the refrigerated compartment 2, i.e., Tm4<8°C. Optionally, the fourth temperature threshold Tm4 can be set to 4°C. During the heating process of the refrigerated compartment 2 by the heater 615, in order to prevent the second temperature of the refrigerated compartment 2 from being too high, when the temperature of the refrigerated compartment 2 rises to approach the maximum target operating temperature of the refrigerated compartment 2, i.e., T2>Tm4, the heater 615 is controlled to be in an off state, and heating to the refrigerated compartment 2 is stopped, so that the refrigerated compartment 2 works normally at its target operating temperature, thereby playing a role in refrigerating and preserving food.

[0064] In some embodiments, when the refrigeration compressor 601 is in a fault state, the freezing compressor 602 is controlled to be in an on state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 away from the semiconductor module 3, so that the heat conductor 41 has a third state disconnected from the semiconductor module 3, such as Figure 5 As shown, in the third state, the first vent 211 is in an open state. If the refrigeration compressor 601 fails, indicating that the refrigeration compressor 601 cannot refrigerate normally, then the heat conductor 41 is disconnected from the semiconductor module 3, and the first end 411 of the heat conductor 41 extends away from the heat conductor 41 in the vertical direction, that is, the heat conductor 41 is substantially perpendicular to the first vent 211, so that the first vent 211 is in an open state. At this time, the composite heat conductive structure 4 is equivalent to the damper connecting the refrigeration air duct 21 and the refrigeration compartment 2, the semiconductor module 3 is not powered, that is, it is in an inoperative state, and the coldness of the freezing air duct 11 enters the refrigeration air duct 21 by heat convection, so that the refrigeration compartment 2 reaches its target operating temperature, and the refrigeration compressor 602 provides cooling capacity for the freezing compartment 1 and the refrigeration compartment 2 at the same time. Especially in the high temperature environment in summer, users have a greater demand for refrigeration. Even if the refrigeration compressor 601 fails, the refrigeration compartment 2 can still work normally to refrigerate and preserve food, thereby avoiding the problem of food rotting and spoiling in a high temperature environment, and also providing sufficient time for after-sales maintenance.

[0065] In some embodiments, the temperature control device 100 includes a variable temperature compartment 5, the variable temperature compartment 5 is provided with a variable temperature air duct connected to the variable temperature compartment 5, the variable temperature air duct is provided with a second vent connected to the freezing air duct 11, and the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent; the controller is electrically connected to the variable temperature damper, and when the freezing compressor 602 is in a fault state, the controller is configured to control the variable temperature damper to be in a closed state, and at the same time control the refrigeration compressor 601 to be in an open state, and the heat conductor 41 is in a first state. It should be noted that the variable temperature damper can adopt an electric damper in the prior art, and its specific structure and working principle can refer to the prior art, and this application will not be repeated here. It can be understood that when the freezing compressor 602 works normally, part of the coldness of the freezing compressor 602 enters the freezing compartment 1 from the freezing air duct 11, and another part of the coldness of the freezing compressor 602 enters the variable temperature compartment 5 from the variable temperature duct. If the refrigeration compressor 602 fails, indicating that the refrigeration compressor 602 cannot refrigerate normally, then the refrigeration compressor 601 is controlled to be in the open state, and the heat conductor 41 is in the first state. As mentioned above, the refrigeration compressor 601 can be used to provide refrigeration to the refrigeration duct 21. At least a part of the coldness of the refrigeration duct 21 enters the freezing duct 11 through the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction. Of course, a part of the coldness of the refrigeration duct 21 can also enter the freezing duct 11 through the first vent 211 by heat convection. These coldnesses help the freezing compartment 1 to cool down quickly. Since the refrigeration compressor 601 cannot provide too much coldness, the variable temperature damper is controlled to be in the closed state, and the coldness of the freezing duct 11 will not enter the variable temperature compartment 5 from the second vent, thereby reducing the coldness loss of the freezing compartment 1. The variable temperature compartment 5 does not refrigerate, that is, the refrigeration compressor 601 only provides coldness for the refrigeration compartment 2 and the freezing compartment 1.

[0066] In some embodiments, Figure 6 As shown, the semiconductor module 3 includes a semiconductor refrigeration sheet 31, the semiconductor refrigeration sheet 31 has a cold end 301 and a hot end 302 arranged opposite to each other, the cold end 301 of the semiconductor refrigeration sheet 31 is provided with a heat transfer member 32, the heat transfer member 32 is configured to transfer the coldness of the semiconductor refrigeration sheet 31 to the freezing chamber 1, and the hot end 302 of the semiconductor refrigeration sheet 31 is detachably connected to the first end 411 of the heat conductor 41. It can be understood that after the semiconductor module 3 is powered on, the semiconductor refrigeration sheet 31 can absorb the heat of the freezing chamber 1 based on the thermoelectric effect, so that the temperature of the freezing chamber 1 is continuously reduced, thereby cooling the food placed in the freezing chamber 1 and realizing rapid refrigeration.

[0067] Furthermore, the semiconductor cooling sheet 31 includes an N-type semiconductor element 33 and a P-type semiconductor element 34 which are sequentially connected in series to form a thermocouple, and a power supply module 35 is provided between the N-type semiconductor element 33 at the head end and the P-type semiconductor element 34 at the end end. The controller is electrically connected to the power supply module 35, and controls the power on or off of the semiconductor module 3 by controlling the on and off of the power supply module 35. After power is turned on, when the current flows from the N-type semiconductor element 33 to the P-type semiconductor element 34, the temperature drops and heat is absorbed to form a cold end 301, and when the current flows from the P-type semiconductor element 34 to the N-type semiconductor element 33, the temperature rises and heat is released to form a hot end 302.

[0068] like Figure 7 As shown, the present application provides a refrigerator 600, including a refrigeration compressor 601, a freezing compressor 602, and the temperature control device 100 as described above, and the temperature control device 100 is used to control the temperature of the refrigerator 600. The embodiment of the refrigerator 600 can achieve the technical effects of the embodiment of the temperature control device 100 as described above, which will not be described in detail here.

[0069] Furthermore, if Figure 8 As shown, the refrigerator 600 includes a first condenser 603, a first evaporator 604 and a first throttling device 605. The exhaust port of the refrigeration compressor 601 is connected to the refrigerant inlet of the first condenser 603 through a first pipeline 607. The refrigerant outlet of the first condenser 603 is connected to the inlet of the first throttling device 605. The outlet of the first throttling device 605 is connected to the refrigerant inlet of the first evaporator 604. The refrigerant outlet of the first evaporator 604 is connected to the air inlet of the refrigeration compressor 601. The first evaporator 604 is arranged in the refrigeration compartment 2. The refrigeration compressor 601, the first condenser 603, the first throttling device 605 and the first evaporator 604 constitute a first refrigeration cycle. The refrigeration compressor 601 sucks low-pressure refrigerant from the first evaporator 604, raises the refrigerant from low pressure to high pressure, and makes the refrigerant circulate continuously in the first refrigeration cycle. The refrigerant is condensed into a liquid with a relatively high pressure in the first condenser 603. This part of the refrigerant liquid is throttled by the first throttling device 605 and then sent to the first evaporator 604. It absorbs heat and evaporates in the first evaporator 604 to become steam with a relatively low pressure, and then is sent to the air inlet of the refrigeration compressor 601. The low-temperature refrigerant in the first evaporator 604 exchanges heat with the air in the refrigerated compartment 2, thereby continuously discharging the internal heat of the refrigerated compartment 2 to the external environment.

[0070] Furthermore, if Figure 1As shown, the refrigerator 600 further includes a refrigerating fan 606, which is disposed in the refrigerating air duct 21, and the refrigerating air duct 21 is provided with a first air inlet and a first air return port, both of which are connected to the refrigerating compartment 2. When the refrigerating fan 606 is turned on, the cold energy of the first evaporator 604 and the air form cold air and enter the refrigerating compartment 2 from the first air inlet, and the air in the refrigerating compartment 2 enters the refrigerating air duct 21 from the first air return port to form return air, thereby achieving cooling of the refrigerating compartment 2.

[0071] In one example, the heater 615 includes a heating tube, which is disposed on the first pipeline 607. Since the temperature of the refrigerant output by the first condenser 603 is relatively high, the refrigeration compressor 602 is in the on state, and the first temperature of the freezing chamber 1 is greater than the first temperature threshold, if the heat conductor 41 is in the first state, and T2<Tm3, it means that the second temperature of the refrigerating chamber 2 is too low. At this time, this part of the high-temperature refrigerant can be used to provide heat to the refrigerating chamber 2, so that the second temperature of the refrigerating chamber 2 rises, thereby preventing the temperature of the refrigerating chamber 2 from crossing zero, ensuring the freshness of the food stored in the refrigerating chamber 2, and saving energy consumption.

[0072] In some embodiments, Fig. 9As shown, the refrigerator 600 includes a second condenser 608, a second evaporator 609, a second throttling device 610, a third evaporator 611 and a third throttling device 612, the exhaust port of the refrigeration compressor 602 is connected to the refrigerant inlet of the second condenser 608, the refrigerant outlet of the second condenser 608 and the inlet of the second throttling device 610 are connected through a second pipeline 614, the outlet of the second throttling device 610 is connected to the refrigerant inlet of the second evaporator 609, and the refrigerant outlet of the second evaporator 609 is connected to the air inlet of the refrigeration compressor 602; the inlet of the third throttling device 612 is connected to the second pipeline 614, the outlet of the third throttling device 612 is connected to the refrigerant inlet of the third evaporator 611, and the outlet of the third evaporator 611 is connected to the refrigerant inlet of the second evaporator 609; the third evaporator 611 is arranged in the variable temperature air duct, and the second evaporator 609 is arranged in the freezing air duct 11. The refrigeration compressor 602, the second condenser 608, the second throttling device 610 and the second evaporator 609 constitute a second refrigeration cycle. The refrigeration compressor 602 sucks low-pressure refrigerant from the second evaporator 609, raises the refrigerant from low pressure to high pressure, and makes the refrigerant circulate continuously in the second refrigeration cycle. The refrigerant is condensed into a liquid with a higher pressure in the second condenser 608. This part of the refrigerant liquid is throttled by the second throttling device 610 and then sent to the second evaporator 609. It absorbs heat and evaporates in the second evaporator 609 to become steam with a lower pressure, and then sent to the air inlet of the refrigeration compressor 602. The low-temperature refrigerant in the second evaporator 609 exchanges heat with the air in the freezing compartment 1, thereby continuously discharging the internal heat of the freezing compartment 1 to the external environment, so that the freezing compartment 1 reaches its target working temperature. Similarly, the refrigeration compressor 602, the third condenser, the third throttling device 612 and the third evaporator 611 constitute a third refrigeration cycle. The refrigeration compressor 602 inhales low-pressure refrigerant from the third evaporator 611, raises the refrigerant from low pressure to high pressure, and makes the refrigerant circulate continuously in the third refrigeration cycle. The low-temperature refrigerant in the third evaporator 611 exchanges heat with the air in the temperature-changing chamber 5, thereby continuously discharging the internal heat of the temperature-changing chamber 5 to the external environment, so that the temperature-changing chamber 5 reaches its target operating temperature.

[0073] Furthermore, if Figure 1 As shown, the refrigerator 600 further includes a freezing fan 613, which is disposed in the freezing air duct 11, and the freezing air duct 11 is provided with a second air inlet and a second air return port, and the second air inlet and the second air return port are both connected to the freezing compartment 1. When the freezing fan 613 is turned on, the cold air of the second evaporator 609 and the air form cold air and enter the freezing compartment 1 from the second air inlet, and the air in the freezing compartment 1 enters the freezing air duct 11 from the second air return port to form return air, thereby achieving cooling of the freezing compartment 1.

[0074] Of course, the variable temperature air duct may also be provided with a variable temperature fan, which accelerates the air flow of the variable temperature air duct to improve the heat exchange efficiency between the low-temperature refrigerant of the third evaporator 611 and the air in the variable temperature chamber 5.

[0075] like Fig.10 As shown, the present application also provides a control method for a refrigerator 600, which is applied to the refrigerator 600 as described above, and the control method includes the following steps:

[0076] S1, obtaining a first temperature of the freezing compartment 1 and an operating condition of the refrigerator 600;

[0077] S2. If the freezing compressor 602 of the refrigerator 600 is in the on state and the first temperature of the freezing chamber 1 is greater than the first temperature threshold, the refrigeration compressor 601 is controlled to be in the on state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 close to the semiconductor module 3, so that the heat conductor 41 has a first state of being connected to the hot end 302 of the semiconductor module 3, and at least a part of the cold energy of the refrigeration air duct 21 enters the freezing air duct 11 from the heat conductor 41 through the semiconductor module 3, so that the freezing chamber 1 is quickly cooled.

[0078] If the refrigeration compressor 602 is in the on state and T1>Tm1, the refrigeration compressor 602 is not faulty, indicating that the refrigerator 600 has just been powered on or a large amount of food has just been put into the freezer compartment 1 of the refrigerator 600, and the heat load is large. In order to reach the target operating temperature of the freezer compartment 1, the refrigeration compressor 602 will increase the speed and continue to run, and the refrigerator 600 is in a non-steady-state operation mode. Then, the refrigeration compressor 601 is controlled to be in the on state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 in the direction close to the semiconductor module 3, so that the first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3. At this time, the heat conductor 41 is in the first state. When the semiconductor module 3 is powered on, it can quickly cool down, so that it has a hot end 302 and a cold end 301 that are relatively set. At least a part of the coldness of the refrigeration air duct 21 enters the freezing air duct 11 through the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction. The first end 411 of the heat conductor 41 is connected to the hot end 302 of the semiconductor module 3, so that the hot end 302 of the semiconductor reaches about 2°C, and the cold end 301 of the semiconductor module 3 can reach a minimum of -18°C. The cold end 301 of the semiconductor module 3 can compensate a certain amount of coldness to the freezing air duct 11. This coldness enters the freezing compartment 1 from the freezing air duct 11 to assist the freezing compartment 1 in rapid cooling, thereby shortening the high-speed operation time of the freezing compressor 602 and reducing energy consumption. At the same time, it can avoid the freezing compressor 602 from speeding up for too long and generating long noise, thereby improving user experience.

[0079] Furthermore, the control method comprises the following steps:

[0080] If the first temperature of the freezer compartment 1 is lower than the second temperature threshold, the freezer compressor 602 is controlled to be in an off state, and at the same time, the first end 411 of the heat conductor 41 is controlled to rotate away from the semiconductor module 3 so that the heat conductor 41 has a second state disconnected from the semiconductor module 3. In the second state, the first vent 211 is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold.

[0081] If T1<Tm2, it indicates that the freezing compartment 1 has reached its target operating temperature. At this time, the freezing compressor 602 is controlled to stop, and the first end 411 of the heat conductor 41 is controlled to rotate in a direction away from the semiconductor module 3, so that the heat conductor 41 is in the second state. The first end 411 of the heat conductor 41 extends in the horizontal direction, so that the first vent 211 is in a closed state, the refrigerating air duct 21 and the freezing air duct 11 are not connected, the refrigerator 600 is in a steady-state operation mode, and the refrigerating compressor 601 only provides cooling capacity for the refrigerating air duct 21, so that the refrigerating compartment 2 operates at its target operating temperature, thereby reducing the energy consumption of the entire machine.

[0082] In some embodiments, the control method further comprises the following steps:

[0083] Obtaining a second temperature of the refrigerated compartment 2;

[0084] When the refrigeration compressor 602 is in the on state and the first temperature of the freezing compartment 1 is greater than the first temperature threshold, if the heat conductor 41 is in the first state and the second temperature of the refrigerating compartment 2 is less than the third temperature threshold, the heater 615 is controlled to be in the on state, wherein the third temperature threshold is greater than the first temperature threshold.

[0085] Specifically, Tm3>0℃, and Tm3 can be set to 2℃. It can be understood that when the refrigeration compressor 602 is in the on state and the first temperature of the freezing chamber 1 is greater than the first temperature threshold, if the heat conductor 41 is in the first state and T2<Tm3, it means that the second temperature of the refrigerating chamber 2 is too low. At this time, the heater 615 is controlled to be in the on state to provide heat to the refrigerating chamber 2, so that the second temperature of the refrigerating chamber 2 rises. Through the above control strategy, the temperature of the refrigerating chamber 2 can be prevented from crossing zero, and the freshness of the food stored in the refrigerating chamber 2 can be ensured.

[0086] Furthermore, the control method further comprises the following steps:

[0087] If the second temperature of the refrigerating compartment 2 is greater than a fourth temperature threshold, the heater 615 is controlled to be in an off state, wherein the fourth temperature threshold is greater than the third temperature threshold.

[0088] During the heating process of the refrigerating compartment 2 by the heater 615, in order to prevent the second temperature of the refrigerating compartment 2 from being too high, when the temperature of the refrigerating compartment 2 rises and approaches the maximum target operating temperature of the refrigerating compartment 2, that is, T2>Tm4, the heater 615 is controlled to be in an off state, and stops heating the refrigerating compartment 2, so that the refrigerating compartment 2 works normally at its target operating temperature, thereby playing a role in refrigerating and preserving food.

[0089] It should be noted that the above control method embodiment satisfies that the temperature-variable compartment 5 is used for refrigeration or freezing, that is, the temperature-variable compartment 5 has a wide temperature range.

[0090] In some embodiments, the control method comprises the following steps:

[0091] If the refrigeration compressor 602 fails, the temperature variable damper is controlled to be in a closed state, and the refrigeration compressor 601 is controlled to be in an open state, and the heat conductor 41 is in the first state.

[0092] It is understandable that if the refrigeration compressor 602 fails, indicating that the refrigeration compressor 602 cannot refrigerate normally, then the refrigeration compressor 601 is controlled to be in the on state, and the heat conductor 41 is in the first state. As mentioned above, the refrigeration compressor 601 can be used to provide cooling capacity to the refrigeration air duct 21, and at least a part of the cooling capacity of the refrigeration air duct 21 enters the refrigeration air duct 11 through the second end 412 of the heat conductor 41 through the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction. Of course, a part of the cooling capacity of the refrigeration air duct 21 can also be The first vent 211 enters the freezing air duct 11 by heat convection, and the cold energy helps the freezing compartment 1 to cool down quickly; because the refrigeration compressor 601 cannot provide too much cold energy, the variable temperature damper is controlled to be in a closed state, and the cold energy of the freezing air duct 11 will not enter the variable temperature compartment 5 from the second vent, thereby reducing the cold energy loss of the freezing compartment 1. The variable temperature compartment 5 does not refrigerate, that is, the refrigeration compressor 601 only provides cold energy for the refrigeration compartment 2 and the freezing compartment 1. This control strategy gives priority to ensuring the refrigeration function of the refrigeration compartment 2 and the freezing function of the freezing compartment 1.

[0093] In some embodiments, the control method comprises the following steps:

[0094] If the refrigeration compressor 601 fails, the freezing compressor 602 is controlled to be in the on state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 away from the semiconductor module 3, so that the heat conductor 41 has a third state disconnected from the semiconductor module 3. In the third state, the first vent 211 is in the open state.

[0095] If the refrigeration compressor 601 fails, it means that the refrigeration compressor 601 cannot refrigerate normally. Then the heat conductor 41 is disconnected from the semiconductor module 3, and the first end 411 of the heat conductor 41 extends away from the heat conductor 41 in the vertical direction, that is, the heat conductor 41 is substantially perpendicular to the first vent 211, so that the first vent 211 is in an open state. At this time, the composite heat conductive structure 4 is equivalent to the damper connecting the refrigeration air duct 21 and the refrigeration compartment 2. The semiconductor module 3 is not powered, that is, it is in an inoperative state. The coldness of the freezing air duct 11 enters the refrigeration air duct 21 by heat convection, so that the refrigeration compartment 2 reaches its target operating temperature. The freezing compressor 602 provides cooling capacity for both the freezing compartment 1 and the refrigeration compartment 2. Especially in the high temperature environment in summer, the user's refrigeration demand is relatively large. Even if the refrigeration compressor 601 fails, the refrigeration compartment 2 can still work normally to refrigerate and preserve food, thereby avoiding the problem that food is prone to rot and deterioration in a high temperature environment, and also provides sufficient time for after-sales maintenance.

[0096] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0097] Although the terms first, second, third, etc. can be used in the text 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 can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0098] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A temperature control device for controlling the temperature of a refrigerator, wherein the refrigerator comprises a refrigeration compressor and a freezing compressor, characterized in that: The temperature control device comprises: The freezing compartment is provided with a freezing air duct; The cold storage room is provided with a cold storage air duct; A semiconductor module is arranged at one end of the freezing air duct close to the refrigeration air duct, and the semiconductor module has a cold end and a hot end arranged opposite to each other after being powered on; The composite heat-conducting structure comprises a heat conductor, wherein the heat conductor is rotatably arranged at one end of the refrigerating air duct close to the freezing air duct; a first temperature detection device configured to detect a first temperature of the freezing compartment; and a controller, the controller being electrically connected to the first temperature detection device, the refrigeration compressor and the freezing compressor, and the controller being configured to, if the first temperature of the freezing compartment is greater than a first temperature threshold, control the refrigeration compressor to be in the on state, and control the first end of the heat conductor to rotate relative to the refrigeration air duct close to the semiconductor module, so that the heat conductor has a first state of being connected to the hot end of the semiconductor module, and at least a portion of the cold energy of the refrigeration air duct enters the freezing air duct from the heat conductor through the semiconductor module, so that the freezing compartment is quickly cooled.

2. The temperature control device according to claim 1, characterized in that: The refrigeration air duct is provided with a first vent communicated with the freezing air duct, and the heat conductor is rotatably arranged at the first vent to control the opening or closing of the first vent; When the heat conductor is in the first state, the first vent is in an open state, so that a portion of the cold air in the refrigeration air duct enters the freezing air duct through heat convection.

3. The temperature control device according to claim 2, characterized in that: The composite heat-conducting structure includes a driving member, a turntable is provided at the second end of the heat conductor, the turntable is rotatably connected to the refrigeration air duct, and a power output end of the driving member is transmission-connected to the turntable to drive the turntable to drive the first end of the heat conductor to rotate close to the semiconductor module to reach the first state.

4. The temperature control device according to claim 2, characterized in that: The controller is configured to, when the first temperature of the freezer compartment is less than the second temperature threshold, control the refrigeration compressor to be in an off state, and control the first end of the heat conductor to rotate away from the semiconductor module so that the heat conductor has a second state disconnected from the semiconductor module, in which the first vent is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold.

5. The temperature control device according to claim 1, characterized in that: comprising a second temperature detection device and a heater, wherein the second temperature detection device is configured to detect a second temperature of the refrigerating compartment, and the heater is disposed in the refrigerating compartment; The controller is electrically connected to the second temperature detection device and the heater. When the refrigeration compressor is in an on state and the first temperature of the freezing compartment is greater than the first temperature threshold, the controller is configured to control the heater to be in an on state if the heat conductor is in the first state and the second temperature of the refrigerating compartment is less than a third temperature threshold, wherein the third temperature threshold is greater than 0°C.

6. The temperature control device according to claim 2, characterized in that: When the refrigeration compressor is in a fault state, the controller is configured to control the freezing compressor to be in an on state, and control the first end of the heat conductor to rotate relative to the refrigeration air duct away from the semiconductor module, so that the heat conductor has a third state disconnected from the semiconductor module, and in the third state, the first vent is in an open state.

7. The temperature control device according to claim 1, characterized in that: The temperature control device comprises a variable temperature chamber, the variable temperature chamber is provided with a variable temperature air duct, the variable temperature air duct is provided with a second vent connected to the freezing air duct, and the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent; The controller is electrically connected to the variable temperature damper. When the refrigeration compressor is in a fault state, the controller is configured to control the variable temperature damper to be in a closed state, and simultaneously control the refrigeration compressor to be in an open state, and the heat conductor is in the first state.

8. The temperature control device according to claim 1, characterized in that: The semiconductor module includes a semiconductor refrigeration plate, which has a cold end and a hot end arranged opposite to each other. The cold end of the semiconductor refrigeration plate is provided with a heat transfer element, and the heat transfer element is configured to transfer the cold energy of the semiconductor refrigeration plate to the freezer compartment. The hot end of the semiconductor refrigeration plate is detachably connected to the first end of the heat conductor.

9. The temperature control device according to claim 8, characterized in that: The semiconductor refrigeration plate includes an N-type semiconductor element and a P-type semiconductor element which are sequentially connected in series to form a thermocouple, and a power supply module is arranged between the N-type semiconductor element at the head end and the P-type semiconductor element at the tail end.

10. A refrigerator, characterized in that: It comprises a refrigeration compressor, a freezing compressor and a temperature control device as claimed in any one of claims 1 to 9, wherein the temperature control device is used to control the temperature of the refrigerator.

11. The refrigerator according to claim 10, characterized in that: It includes a first condenser, a first evaporator and a first throttling device. The exhaust port of the refrigeration compressor is connected to the refrigerant inlet of the first condenser through a first pipeline, the refrigerant outlet of the first condenser is connected to the inlet of the first throttling device, the outlet of the first throttling device is connected to the refrigerant inlet of the first evaporator, and the refrigerant outlet of the first evaporator is connected to the air inlet of the refrigeration compressor.

12. The refrigerator according to claim 10, characterized in that: The refrigerator includes a second condenser, a second evaporator, a second throttling device, a third evaporator and a third throttling device. The exhaust port of the refrigeration compressor is connected to the refrigerant inlet of the second condenser, the refrigerant outlet of the second condenser is connected to the inlet of the second throttling device through a second pipeline, the outlet of the second throttling device is connected to the refrigerant inlet of the second evaporator, and the refrigerant outlet of the second evaporator is connected to the air inlet of the refrigeration compressor; the inlet of the third throttling device is connected to the second pipeline, the outlet of the third throttling device is connected to the refrigerant inlet of the third evaporator, and the outlet of the third evaporator is connected to the refrigerant inlet of the second evaporator; the temperature control device includes a variable temperature air duct, the third evaporator is arranged in the variable temperature air duct, and the second evaporator is arranged in the refrigeration air duct.

13. A refrigerator control method, applied to the refrigerator according to any one of claims 10 to 12, characterized in that: The control method comprises: Acquiring a first temperature of a freezing compartment and an operating condition of the refrigerator; If the freezing compressor of the refrigerator is in an on state and the first temperature of the freezing compartment is greater than a first temperature threshold, the refrigeration compressor is controlled to be in an on state, and the first end of the heat conductor is controlled to rotate relative to the refrigeration air duct close to the semiconductor module, so that the heat conductor has a first state of being connected to the hot end of the semiconductor module, and at least a portion of the cold energy of the refrigeration air duct enters the freezing air duct from the heat conductor through the semiconductor module, so that the freezing compartment is quickly cooled.

14. The control method according to claim 13, characterized in that: The refrigeration air duct is provided with a first vent communicated with the freezing air duct, the heat conductor is rotatably provided at the first vent, and the control method comprises: If the first temperature of the freezing chamber is less than a second temperature threshold, the freezing compressor is controlled to be in an off state, and the first end of the heat conductor is controlled to rotate away from the semiconductor module so that the heat conductor has a second state disconnected from the semiconductor module, and in the second state, the first vent is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold.

15. The control method according to claim 13, characterized in that: The temperature control device includes a second temperature detection device and a heater, and the control method includes: obtaining a second temperature of the refrigerated compartment; When the refrigeration compressor is in an on state and the first temperature of the freezing compartment is greater than the first temperature threshold, if the heat conductor is in the first state and the second temperature of the refrigerating compartment is less than a third temperature threshold, the heater is controlled to be in an on state, wherein the third temperature threshold is greater than the first temperature threshold.

16. The control method according to claim 15, characterized in that: include: If the second temperature of the refrigerating compartment is greater than a fourth temperature threshold, the heater is controlled to be in an off state, wherein the fourth temperature threshold is greater than the third temperature threshold.

17. The control method according to claim 13, characterized in that: The temperature control device comprises a variable temperature compartment, the variable temperature compartment is provided with a variable temperature air duct, the variable temperature air duct is provided with a second vent connected to the freezing air duct, the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent, and the control method comprises: If the refrigeration compressor fails, the temperature variable damper is controlled to be in a closed state, and the refrigeration compressor is controlled to be in an open state, and the heat conductor is in the first state.

18. The control method according to claim 14, characterized in that: include: If the refrigeration compressor fails, the freezing compressor is controlled to be in an on state, and the first end of the heat conductor is controlled to rotate relative to the refrigeration air duct away from the semiconductor module, so that the heat conductor has a third state disconnected from the semiconductor module. In the third state, the first vent is in an open state.

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