Temperature control device, refrigerator and control method thereof

Abstract

The application relates to a temperature control device, a refrigerator and a control method thereof. The temperature control device comprises a freezing compartment provided with a freezing air duct; a refrigerating compartment provided with a refrigerating air duct; a semiconductor module arranged at one end of the freezing air duct close to the refrigerating air duct, the semiconductor module having a cold end and a hot end arranged oppositely after being powered on; a composite heat conduction structure comprising a heat conductor 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 electrically connected with the first temperature detection device, the refrigerating compressor and the freezing compressor, which can assist the freezing compartment in rapidly refrigerating when the heat load of the freezing compartment is large, thereby shortening the high-speed operation time of the freezing compressor, reducing energy consumption, avoiding long noise caused by the long speed-up time of the freezing compressor, and improving user experience.

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] Currently, most refrigerators on the market feature a single compressor, a single system, a dual compressor, a dual system, or a triple system. Most dual compressor, dual system designs employ the following: an evaporator is installed in each of the refrigerated compartment, freezer compartment, and variable temperature compartment to provide cooling for the corresponding compartment. The refrigeration system containing the refrigeration evaporator has a corresponding refrigeration compressor, while the refrigeration evaporator and variable temperature evaporator have corresponding refrigeration compressors in the refrigeration system. This system, when used in large-capacity refrigerators, can easily lead to problems such as low refrigeration temperatures and slow temperature drops in the variable temperature compartment and freezer 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. On the other hand, the refrigeration compressor will continue to run, causing the compressor to speed up. Long-term speeding up of the compressor will lead to increased power consumption, increased noise, and shortened compressor service life. Summary of the Invention

[0004] The present application provides a temperature control device, a refrigerator, and a control method thereof, to solve the technical problems in existing refrigerators where, 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 continues to run, causing the compressor to speed up. The long-term speed-up of the compressor leads to increased power consumption, shortened compressor service life, increased noise caused by the speed-up of the compressor, and a 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 includes a refrigeration compressor and a freezing compressor. The temperature control device comprises: a freezer compartment provided with a freezing air duct; a refrigerator compartment provided with a freezing air duct; a semiconductor module disposed at one end of the freezing air duct near the freezing air duct, the semiconductor module having a cold end and a hot end oppositely disposed when energized; a composite heat conductive structure comprising a heat conductor rotatably disposed at one end of the freezing air duct near the freezing air duct; a first temperature detection device configured to detect a first temperature of the freezer compartment; and a controller electrically connected to the first temperature detection device, the refrigeration compressor, and the freezing compressor. When the freezing compressor is in an on state, the controller is configured to, if a first temperature of the freezer compartment is greater than a first temperature threshold, control the refrigeration compressor to be in an on state, and control the first end of the heat conductor to rotate relative to the freezing air duct near the semiconductor module so that the heat conductor is in a first state connected to the hot end of the semiconductor module. At least a portion of the cold air from the freezing air duct enters the freezing air duct from the heat conductor via the semiconductor module, thereby rapidly cooling the freezer compartment.

[0006] In one possible implementation, the refrigeration duct is provided with a first vent connected to the freezing 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 the first state, the first vent is in the open state, so that part of the cold air in the refrigeration duct enters the freezing duct through heat convection.

[0007] In one possible implementation, 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 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 in which it is disconnected from the semiconductor module. In the second state, the first vent is in a closed state, wherein the first temperature threshold is greater than the second temperature threshold.

[0009] In one possible implementation, the refrigerator includes a second temperature detection device and a heater, the second temperature detection device being configured to detect a second temperature of the refrigerated compartment, and the heater being disposed in the refrigerated compartment. A controller is electrically connected to the second temperature detection device and the heater, and when the refrigeration compressor is in an on state and the first temperature of the refrigerated 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 refrigerated 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 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, and the variable temperature air duct is provided with a variable temperature damper that controls 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 to be in the first state.

[0012] In one possible implementation, 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, which is configured to transfer the cold energy of the semiconductor refrigeration plate to the freezer compartment, and the hot end of the semiconductor refrigeration plate is detachably connected to the first end of the heat conductor.

[0013] In one possible implementation, the semiconductor refrigeration plate includes an N-type semiconductor element and a P-type semiconductor element connected in series to form a thermocouple, and a power supply module is provided 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 one 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 and the inlet of the second throttling device are connected 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 freezing 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 the 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, then 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 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 freezer compartment from the heat conductor through the semiconductor module, so that the freezer compartment is quickly cooled.

[0018] 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. The control method includes: if a first temperature of the freezing compartment is lower than a second temperature threshold, controlling the refrigeration compressor to be in an off state, and simultaneously controlling 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, wherein 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 one possible implementation, 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 refrigerated compartment is greater than a first temperature threshold, if the heat conductor is in a first state and the second temperature of the refrigerated 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 controlling the heater to be in an off state if the second temperature of the refrigerated compartment is greater than a fourth temperature threshold, 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, and the variable temperature air duct is provided with a variable temperature damper for controlling the opening and closing of the second vent. 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 to be in a first state.

[0022] In one possible implementation, the method includes: if the refrigeration compressor fails, controlling the freezing compressor to be in an on state, and controlling 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 in which it is disconnected from the semiconductor module. 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 in the embodiments of the present application have a steady-state operating mode and an unsteady-state operating mode. When the refrigerator is in the steady-state operating mode, it indicates that the refrigerator has been powered on for a long time and the amount of frozen food has not changed significantly. At this time, the heat load of the refrigerator is low, the refrigeration compressor operates normally and provides cooling to the refrigeration air duct, and the freezing compressor operates normally and provides cooling 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 freezer compartment is greater than the first temperature threshold, the freezing compressor failure is ruled out. This indicates that the refrigerator has just been powered on or a large amount of food has just been placed in the freezer compartment of the refrigerator, resulting in a large heat load. To achieve the target operating temperature of the freezer compartment, the freezing compressor will increase its speed and continue to operate. The refrigerator is in the unsteady-state operating mode. In this case, the freezing compressor is controlled to be on, and the first end of the heat conductor is controlled to rotate relative to the freezing air duct in a 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. At this time, the heat conductor is in the first state. When the semiconductor module is powered on, it can quickly cool down, resulting in a relatively set hot end and cold end. At least a portion of the cold energy in the refrigeration air duct enters the freezing air duct by heat conduction from the second end of the heat conductor through the first end of the heat conductor and the semiconductor module. 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 approximately 2°C and the cold end of the semiconductor module can reach a minimum of -18°C. The cold end of the semiconductor module can compensate a certain amount of cold energy to the freezing air duct. This cold energy enters the freezing compartment from the freezing air duct, helping to quickly cool the freezing compartment, thereby shortening the high-speed operation time of the freezing compressor, reducing energy consumption, and preventing the freezing compressor from speeding up for too long and generating long noise, thereby improving the 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 A schematic structural diagram 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 structural diagram of a refrigerator provided in an embodiment of the present application;

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

[0036] Figure 9 for Figure 7 Schematic diagram of the working principle of the refrigerator Figure 2 , where the arrow direction is the refrigerant flow direction;

[0037] Figure 10 This is 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. Freezing compartment; 11. Freezing 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 refrigeration plate; 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] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and arrangements of the specific examples described hereinafter are intended to be examples only. Of course, they are not meant to limit the present application. Furthermore, the present application can be repeated with different examples in the different instances. Such repetition is intended to simplify and clarify the present application, and is not meant to indicate that the various embodiments and / or arrangements discussed are related in any way.

[0048] For the purpose of describing the present application, spatial relative terms as used herein, for example, "inner", "outer", "inner side", "outer side", "under", "below", "upper", "above", "front", "back", etc. are used to describe the relative position relationship or movement of one element or feature with respect to another element or feature as shown in the drawings. 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 drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be subsequently oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both upward and downward positions. The device can be additionally oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein are interpreted accordingly.

[0049] In the related art, if the refrigerator is just powered on or a large amount of food to be frozen is put into the freezing compartment at this time, the heat load of the freezing compartment of the refrigerator is large at this time, and if the freezing compressor alone cools the freezing compartment at this time, in order to reach the target temperature of the freezing compartment set by the user, the freezing compressor will be continuously operated, and in this process, the freezing compressor may increase the speed in addition to continuous operation, on the one hand, the cooling capacity provided by the freezing compressor is not enough to make the temperature of the freezing compartment drop rapidly, on the other hand, the continuous operation of the freezing compressor causes the compressor to speed up, the long-time speed-up of the compressor leads to an increase in power consumption, reduces the service life of the compressor, the noise caused by the speed-up of the compressor also leads to a poor user experience.

[0050] In order to solve the technical problems in existing refrigerators where, 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, causing the compressor to speed up. The long-term speed-up of the compressor leads to increased power consumption, shortened compressor service life, increased noise caused by the speed-up of the compressor, and poor user experience, the present 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, reducing energy consumption, and avoiding the long noise caused by the speed-up time of the refrigeration compressor, thereby improving user experience.

[0051] Figure 1 and Figure 2 The present application provides a temperature control device 100, which is arranged between the refrigerating compartment 2 and the freezing compartment 1 of the 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 freezing 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 freezing compartment 2 is provided with a freezing air duct 21 connected to the freezing compartment 2; the semiconductor module 3 is arranged at one end of the freezing air duct 11 close to the freezing air duct 21, and the semiconductor module 3 has a cold end 301 and a hot end 302 arranged oppositely when 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. one end; a first temperature detection device configured to detect a first temperature T1 of the freezer compartment 1; a controller 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 freezer compartment 1 is greater than a 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 is in the first state connected to the hot end 302 of the semiconductor module 3, and at least a portion of the cold air from 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, thereby rapidly cooling the freezer compartment 1.

[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, the refrigeration compressor 601 operates normally and provides cold to the refrigeration air duct 21. The cold from the refrigeration air duct 21 enters the refrigeration compartment 2, so that the refrigeration compartment 2 is cooled to its target working temperature, and the target working temperature of the refrigeration compartment 2 is 2-8℃, thereby refrigerating and preserving the food stored in the refrigeration compartment 2. The freezing compressor 602 operates normally and provides cold to the freezing air duct 11. The cold from the freezing air duct 11 enters the freezing compartment 1, so that the freezing compartment 1 is cooled to its target working temperature, and the target working temperature of the freezing compartment 2 is -24- -18℃, thereby freezing and preserving the food stored in the freezing compartment 1. Of course, the refrigerator 600 can also be provided with a variable temperature compartment 5, and the temperature control device 100 includes a variable temperature air duct in communication with the variable temperature compartment 5. The freezing compressor 602 operates normally and simultaneously provides cold to the variable temperature air duct. The cold from the variable temperature air duct enters the variable temperature compartment 5, so that the variable temperature compartment 5 is cooled to its target working temperature, and the target working temperature of the variable temperature compartment 5 is -24-4℃, which has a wide variable temperature, thereby refrigerating or freezing the food stored in the variable temperature compartment 5.

[0053] If the freezing compressor 602 is in the open state and T1>Tm1, the freezing compressor 602 is excluded from the fault problem, which indicates that the refrigerator 600 is just powered on or a large amount of food is just put into the freezing compartment 1 of the refrigerator 600 at this time, and the heat load is large. In order to reach the target working temperature of the freezing compartment 1, the freezing compressor 602 will increase the speed and continuously operate. The refrigerator 600 is in a non-steady state operation mode, the refrigeration compressor 601 is controlled to be in an open state, and the first end 411 of the heat conductor 41 is controlled to rotate relative to the refrigeration air duct 21 to the direction close to the semiconductor module 3, so that the first end 411 of the heat conductor 41 is connected with 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 relatively arranged hot end 302 and a cold end 301. At least part of the cold from the refrigeration air duct 21 enters the freezing air duct 11 through the heat conduction mode from the second end 412 of the heat conductor 41, the first end 411 of the heat conductor 41 and the semiconductor module 3, the first end 411 of the heat conductor 41 is connected with the hot end 302 of the semiconductor module 3, so that the hot end 302 of the semiconductor reaches about 2℃, and the cold end 301 of the semiconductor module 3 can reach -18℃ at the lowest. The cold end 301 of the semiconductor module 3 can compensate a certain amount of cold to the freezing air duct 11. These cold from the freezing air duct 11 enters the freezing compartment 1, which assists the freezing compartment 1 to quickly cool down, thereby shortening the high-speed operation time of the freezing compressor 602, reducing energy consumption, and avoiding long noise generated by the freezing compressor 602 for a long time to speed up, thereby improving the user experience.

[0054] Specifically, Tm1 = T0 + ΔT1, where T0 is the target operating temperature of freezer compartment 1 and ΔT1 is the non-steady-state on / off temperature difference. It should be noted that T0 can be set to -24°C to -18°C. The user can set the value of T0 via a touch panel on refrigerator 600, for example. The specific setting process and operating principle can be referenced in the prior art and are not further described 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 the first end 411 of the heat conductor 41 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 from the refrigeration duct 21 enters the freezing duct 11 by heat convection, and the cold air enters the freezing compartment 1 from the freezing duct 11, thereby assisting in rapid cooling of the freezing compartment 1, further shortening the high-speed operation time of the freezing compressor 602, reducing energy consumption, and avoiding 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 portion 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] Furthermore, the hot end 302 of the semiconductor module 3 is positioned near the first vent 211, while the hot end 302 of the semiconductor module 3 is positioned away from the first vent 211. Since the hot end 302 of the semiconductor module 3 is positioned near 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, allowing the hot end 302 of the semiconductor module 3 to reach approximately 2°C. Since the cold end 301 of the semiconductor module 3 is positioned away from the first vent 211, 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 provide a certain amount of cooling to the freezing air duct 11, thereby assisting in rapid cooling of the freezer compartment 1.

[0058] In some embodiments, as 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 in transmission connection with 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 control over 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 in transmission connection with the turntable 413 to drive the turntable 413 to rotate, as shown in FIG. Figure 3 The turntable 413 rotates about 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. A portion of the cold air from the refrigerated compartment 2 enters the freezing air duct 11 by heat conduction 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. At the same time, the first vent 211 is in an open state, so that a portion of the cold air from the refrigerated air duct 21 enters the freezing air duct 11 by heat convection. This cold air enters the freezing compartment 1 from the freezing air duct 11, assisting in rapid cooling of the freezing compartment 1, 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 refrigeration compressor 602 to be in the off state, and simultaneously 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 of being disconnected from the semiconductor module 3, such as Figure 4 As shown, in the second state, the first vent 211 is closed, wherein the first temperature threshold is greater than the second temperature threshold. If T1 < Tm2, ​​it indicates that the freezer compartment 1 has reached its target operating temperature. At this time, the refrigeration compressor 602 is controlled to shut down, 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 horizontally, so that the first vent 211 is closed, the refrigeration duct 21 and the freezing duct 11 are disconnected, and the refrigerator 600 is in a steady-state operating mode. The refrigeration compressor 601 only provides cooling to the refrigeration duct 21, so that the refrigeration compartment 2 operates at its target operating temperature, thereby reducing overall energy consumption.

[0060] Specifically, Tm2=T0+ΔT2, T0 is the target operating temperature of the freezer compartment 1, ΔT2 is the steady-state start-stop temperature difference. It should be noted that ΔT2 can be changed with 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 refrigerator 600 is just powered on or is loaded with a large heat load, refrigeration compressor 601 needs to be turned on to assist in cooling freezer compartment 1. Since freezer compartment 1 takes a while to reach its target operating temperature, if refrigeration compressor 601 is kept on for a long time, the temperature of refrigerator compartment 2 may easily cross zero. To prevent the temperature of refrigerator compartment 2 from crossing zero, some embodiments of the present application further include a heater 615, the specific design of which is described below.

[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 a heater 615 is provided in the refrigerated compartment 2; a controller is electrically connected to the second temperature detection device and heater 615. 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 be a heating device such as a resistance wire or an electromagnetic induction heater 615 in the prior art. The specific structure and operating principle can be referred to the prior art and will not be described in detail in this application. Specifically, Tm3>0°C, Tm3 can be set to 2°C. It is understandable that 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 T2<Tm3, it means that the second temperature of the refrigerating compartment 2 is too low. In this case, the heater 615 is controlled to be in the on state to provide heat to the refrigerating compartment 2, so that the second temperature of the refrigerating compartment 2 increases, thereby preventing the temperature of the refrigerating compartment 2 from crossing zero and ensuring the freshness of the food stored in the refrigerating compartment 2.

[0063] Furthermore, if the second temperature of the refrigerated compartment 2 is greater than a 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 of the refrigerated compartment 2 is stopped, so that the refrigerated compartment 2 operates normally at its target operating temperature, thereby keeping the food refrigerated and fresh.

[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 of being disconnected from the semiconductor module 3, such as Figure 5 As shown, in the third state, the first vent 211 is open. If the refrigeration compressor 601 fails, indicating that it cannot refrigerate normally, the heat conductor 41 is disconnected from the semiconductor module 3. The first end 411 of the heat conductor 41 extends vertically away from the heat conductor 41, that is, the heat conductor 41 is substantially perpendicular to the first vent 211, causing the first vent 211 to be open. At this time, the composite thermal conductive structure 4 acts as a damper connecting the refrigeration duct 21 and the refrigeration compartment 2. The semiconductor module 3 is de-energized and inactive. The cooling energy from the freezer duct 11 enters the refrigeration duct 21 via thermal convection, allowing the refrigeration compartment 2 to reach its target operating temperature. The refrigeration compressor 602 provides cooling energy for both the freezer compartment 1 and the refrigeration compartment 2. 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 easily 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 being provided with a variable temperature air duct communicating with the variable temperature compartment 5, the variable temperature air duct being provided with a second vent connected to the freezing air duct 11, and the variable temperature air duct being provided with a variable temperature damper for controlling the opening and closing of the second vent; a controller being electrically connected to the variable temperature damper, and when the freezing compressor 602 is in a faulty state, the controller is configured to control the variable temperature damper to be closed, while simultaneously controlling the refrigeration compressor 601 to be open, and the heat conductor 41 to be in a first state. It should be noted that the variable temperature damper can be an electric damper as known in the art, and its specific structure and operating principle can be referenced in the prior art and will not be described in detail herein. It is understood that when the freezing compressor 602 is operating normally, a portion of the cooling capacity of the freezing compressor 602 enters the freezing compartment 1 from the freezing air duct 11, and another portion of the cooling capacity of the refrigeration compressor 602 enters the variable temperature compartment 5 from the variable temperature air duct. If the refrigeration compressor 602 fails, indicating that the refrigeration compressor 602 cannot cool normally, the refrigeration compressor 601 is controlled to be in the open state and the heat conductor 41 is in the first state. As described above, the refrigeration compressor 601 can be used to provide cooling capacity to the refrigeration duct 21. At least a portion of the cooling capacity of the refrigeration duct 21 enters the freezing duct 11 by heat conduction 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. Of course, a portion of the cooling capacity of the refrigeration duct 21 can also enter the freezing duct 11 by heat convection from the first vent 211. This cooling capacity also helps to quickly cool the freezing compartment 1. Since the refrigeration compressor 601 cannot provide excessive cooling capacity, the variable temperature damper is controlled to be in the closed state. The cooling capacity of the freezing duct 11 will not enter the variable temperature compartment 5 through the second vent, thereby reducing the cooling capacity loss of the freezing compartment 1. The variable temperature compartment 5 will not be cooled. In other words, the refrigeration compressor 601 only provides cooling capacity to the refrigeration compartment 2 and the freezing compartment 1.

[0066] In some embodiments, as Figure 6 As shown, the semiconductor module 3 includes a semiconductor refrigeration chip 31 having a cold end 301 and a hot end 302 disposed opposite each other. A heat transfer element 32 is provided at the cold end 301 of the semiconductor refrigeration chip 31. The heat transfer element 32 is configured to transfer the cooling energy of the semiconductor refrigeration chip 31 to the freezer compartment 1. The hot end 302 of the semiconductor refrigeration chip 31 is detachably connected to the first end 411 of the heat conductor 41. It will be understood that when the semiconductor module 3 is powered on, the semiconductor refrigeration chip 31 absorbs heat from the freezer compartment 1 due to the thermoelectric effect, thereby continuously lowering the temperature of the freezer compartment 1, thereby cooling the food placed in the freezer compartment 1 and achieving rapid refrigeration.

[0067] Furthermore, the semiconductor cooling plate 31 includes an N-type semiconductor element 33 and a P-type semiconductor element 34 connected in series to form a thermocouple. A power supply module 35 is disposed between the N-type semiconductor element 33 at the head end and the P-type semiconductor element 34 at the tail end. A controller is electrically connected to the power supply module 35 and controls the power on and off of the semiconductor module 3 by turning the power supply module 35 on and off. When powered on, when current flows from the N-type semiconductor element 33 to the P-type semiconductor element 34, the temperature drops and heat is absorbed, forming a cold end 301. When current flows from the P-type semiconductor element 34 to the N-type semiconductor element 33, the temperature rises and heat is released, forming 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, wherein the temperature control device 100 is used to control the temperature of the refrigerator 600. This embodiment of the refrigerator 600 can achieve the technical effects of the embodiment of the temperature control device 100 as described above, and 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 via 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 form a first refrigeration cycle. The refrigeration compressor 601 draws low-pressure refrigerant from the first evaporator 604, raises the refrigerant pressure from low to high, and causes the refrigerant to continuously circulate in the first refrigeration cycle. The refrigerant condenses into a higher-pressure liquid in the first condenser 603. After being throttled by the first throttling device 605, this refrigerant liquid is sent to the first evaporator 604, where it absorbs heat and evaporates into a lower-pressure vapor. The vapor is then 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 dissipating the internal heat of the refrigerated compartment 2 to the external environment.

[0070] Furthermore, if Figure 1As shown, refrigerator 600 further includes a refrigeration fan 606, which is disposed within refrigeration duct 21. Refrigeration duct 21 is provided with a first air inlet and a first air return outlet, both of which are in communication with refrigeration compartment 2. When refrigeration fan 606 is turned on, the cooling energy of first evaporator 604 and air form cold air, which enters refrigeration compartment 2 through the first air inlet. Air from refrigeration compartment 2 then enters refrigeration duct 21 through the first air return outlet to form return air, thereby cooling refrigeration compartment 2.

[0071] In one example, heater 615 includes a heating tube disposed on first pipeline 607. Because the refrigerant output by first condenser 603 is at a relatively high temperature, refrigeration compressor 602 is in an on-state, and the first temperature of freezer compartment 1 is greater than a first temperature threshold, if heat conductor 41 is in the first state and T2 < Tm3, this indicates that the second temperature of refrigerator compartment 2 is too low. In this case, this high-temperature refrigerant can be used to provide heat to refrigerator compartment 2, raising the second temperature of refrigerator compartment 2. This prevents the temperature of refrigerator compartment 2 from exceeding zero, ensuring the freshness of food stored in refrigerator compartment 2 while also saving energy.

[0072] In some embodiments, as Figure 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 temperature variable 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 form a second refrigeration cycle. The refrigeration compressor 602 draws low-pressure refrigerant from the second evaporator 609, raises the refrigerant pressure from low to high, and continuously circulates the refrigerant in the second refrigeration cycle. The refrigerant condenses into a higher-pressure liquid in the second condenser 608. After being throttled by the second throttling device 610, this refrigerant liquid is sent to the second evaporator 609, where it absorbs heat and evaporates into a lower-pressure vapor. The vapor is 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 freezer compartment 1, thereby continuously dissipating the internal heat of the freezer compartment 1 to the external environment, so that the freezer compartment 1 reaches its target operating temperature. Similarly, the refrigeration compressor 602, the third condenser, the third throttling device 612, and the third evaporator 611 form a third refrigeration cycle. The refrigeration compressor 602 draws low-pressure refrigerant from the third evaporator 611, raises the refrigerant pressure from low to high, and causes the refrigerant to continuously circulate in the third refrigeration cycle. The low-temperature refrigerant in the third evaporator 611 exchanges heat with the air in the variable temperature chamber 5, thereby continuously dissipating the internal heat of the variable temperature chamber 5 to the external environment, so that the variable temperature chamber 5 reaches its target operating temperature.

[0073] Furthermore, if Figure 1 As shown, refrigerator 600 further includes a refrigeration fan 613, which is disposed within the refrigeration duct 11. The refrigeration duct 11 is provided with a second air inlet and a second air return duct, both of which are in communication with the freezer compartment 1. When refrigeration fan 613 is turned on, the cooling energy of the second evaporator 609 and the air form cold air, which enters the freezer compartment 1 through the second air inlet. The air in the freezer compartment 1 then enters the refrigeration duct 11 through the second air return duct to form return air, thereby cooling the freezer compartment 1.

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

[0075] like Figure 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. 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 refrigeration compressor 602 of the refrigerator 600 is in the on state and the first temperature of the freezer compartment 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 and close to the semiconductor module 3, so that the heat conductor 41 is in the first state connected to the hot end 302 of the semiconductor module 3. At least a portion of the cold air from the refrigeration air duct 21 flows from the heat conductor 41 through the semiconductor module 3 into the freezing air duct 11, thereby rapidly cooling the freezer compartment 1.

[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 placed in the freezer compartment 1 of the refrigerator 600, resulting in a large heat load. In order to reach the target operating temperature of the freezer compartment 1, the refrigeration compressor 602 will increase its speed and continue to operate, and the refrigerator 600 is in a non-steady-state operation mode. In this case, 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 a 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 arranged opposite each other. At least a portion of the cold energy of the refrigeration air duct 21 enters the freezing air duct 11 by heat conduction 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. 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 approximately 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 cold energy to the freezing air duct 11. This cold energy enters the freezing compartment 1 through the freezing air duct 11, helping the freezing compartment 1 to quickly cool down, thereby 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 the user experience.

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

[0080] If the first temperature of the freezing chamber 1 is lower than the second temperature threshold, the freezing compressor 602 is controlled to be in the 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 the closed state, wherein the first temperature threshold is higher than the second temperature threshold.

[0081] If T1 is less than Tm2, ​​it indicates that the freezer compartment 1 has reached its target operating temperature. At this time, the refrigeration 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 horizontally, so that the first vent 211 is in the closed state, the refrigeration duct 21 and the freezing duct 11 are disconnected, and the refrigerator 600 is in a steady-state operation mode. The refrigeration compressor 601 only provides cooling to the refrigeration duct 21, so that the refrigeration 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°C, and Tm3 can be set to 2°C. It is understood that 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 T2<Tm3, it indicates that the second temperature of the refrigerating compartment 2 is too low. In this case, the heater 615 is controlled to be in the on state to provide heat to the refrigerating compartment 2, thereby increasing the second temperature of the refrigerating compartment 2. Through the above control strategy, the temperature of the refrigerating compartment 2 can be prevented from crossing zero, thereby ensuring the freshness of the food stored in the refrigerating compartment 2.

[0086] Furthermore, the control method further includes 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] In the heating process of the refrigerator compartment 2 by the heater 615, in order to avoid the second temperature of the refrigerator compartment 2 being too high, when the temperature of the refrigerator compartment 2 is close to the highest target working temperature of the refrigerator compartment 2, i.e. T2>Tm4, the heater 615 is controlled to be in the off state, and the heating of the refrigerator compartment 2 is stopped, so that the refrigerator compartment 2 works normally at its target working temperature, and plays a role of fresh-keeping refrigeration for food.

[0089] It should be noted that the above control method embodiment meets the use of the variable-temperature compartment 5 as a refrigerator or as a freezer, i.e. meets the wide variable temperature of the variable-temperature compartment 5.

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

[0091] If the freezing compressor 602 fails, the variable-temperature damper is controlled to be in the closed state, and the refrigerator compressor 601 is controlled to be in the on state, and the heat conductor 41 is in the first state.

[0092] It can be understood that if the freezing compressor 602 fails, it indicates that the freezing compressor 602 cannot work normally, and then the refrigerator compressor 601 is controlled to be in the on state, and the heat conductor 41 is in the first state, as described above, the refrigerator compressor 601 can be used to provide refrigeration capacity to the refrigerator air duct 21, and at least part of the cold capacity of the refrigerator air duct 21 enters the freezing air duct 11 through the heat conductor 41 from the second end 412 of the heat conductor 41 to the first end 411 of the heat conductor 41 and the semiconductor module 3 by heat conduction, of course, part of the cold capacity of the refrigerator air duct 21 can also enter the freezing air duct 11 from the first air vent 211 by heat convection, and these cold capacities together help the freezing compartment 1 to cool down quickly; since the refrigerator compressor 601 cannot provide too much cold capacity, the variable-temperature damper is controlled to be in the closed state, and the cold capacity of the freezing air duct 11 cannot enter the variable-temperature compartment 5 from the second air vent, thereby reducing the loss of cold capacity of the freezing compartment 1, and the variable-temperature compartment 5 does not refrigerate, i.e. the refrigerator compressor 601 only provides cold capacity for the refrigerator compartment 2 and the freezing compartment 1, and this control strategy prioritizes the refrigeration function of the refrigerator 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 refrigerator 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 rotated away from the semiconductor module 3 relative to the refrigerator air duct 21, so that the heat conductor 41 has a third state of being disconnected from the semiconductor module 3, and in the third state, the first air vent 211 is in the open state.

[0095] If the refrigeration compressor 601 fails, indicating that it cannot refrigerate normally, the heat conductor 41 is disconnected from the semiconductor module 3. The first end 411 of the heat conductor 41 extends vertically away from the heat conductor 41, that is, the heat conductor 41 is substantially perpendicular to the first vent 211, causing the first vent 211 to be open. At this time, the composite heat conductive structure 4 acts as a damper connecting the refrigeration duct 21 and the refrigeration compartment 2. The semiconductor module 3 is de-energized, that is, it is in an inoperative state. The cooling energy from the freezer duct 11 enters the refrigeration duct 21 via thermal convection, allowing the refrigeration compartment 2 to reach its target operating temperature. The refrigeration compressor 602 provides cooling energy for both the freezer compartment 1 and the refrigeration compartment 2. Especially in hot summer environments, users have a greater need for refrigeration. Even if the refrigeration compressor 601 fails, the refrigeration compartment 2 can still operate normally, keeping food refrigerated and fresh, thus preventing food from rotting and spoiling in high-temperature environments. This also provides ample time for after-sales repairs.

[0096] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only 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 "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence 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 to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution 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 otherwise, 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 foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

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 equipped with a cold storage air duct; A semiconductor module is provided 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 opposite to each other when powered on; A composite heat-conducting structure, comprising a heat conductor, wherein the heat conductor is rotatably disposed at one end of the refrigeration air duct close to the freezing air duct; a first temperature detecting device configured to detect a first temperature of the freezing compartment; and a controller electrically connected to the first temperature detection device, the refrigeration 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 freezer compartment is greater than a first temperature threshold, control the refrigeration compressor to be in an on state, and control the first end of the heat conductor to rotate relative to the refrigeration air duct and close to the semiconductor module, so that the heat conductor is in a first state connected to the hot end of the semiconductor module, and at least a portion of the cold air from the refrigeration air duct enters the freezing air duct from the heat conductor through the semiconductor module, thereby rapidly cooling the freezer compartment.

2. The temperature control device according to claim 1, characterized in that The refrigeration air duct is provided with a first vent communicating with 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 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 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.

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 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.

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 refrigerated compartment, and the heater is disposed in the refrigerated 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. 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 includes 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 at the same time 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, which 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. A power supply module is provided 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: The refrigerator comprises a refrigeration compressor, a freezing compressor and a temperature control device according to 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, wherein: 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 freezing 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 includes: Acquiring a first temperature of the freezing compartment and an operating condition of the refrigerator; If the refrigerator compressor is in an on state and the first temperature of the freezer compartment is greater than a first temperature threshold, the refrigerator 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 and close to the semiconductor module, so that the heat conductor is in a first state connected to the hot end of the semiconductor module. At least a portion of the cold air from the refrigeration air duct flows from the heat conductor through the semiconductor module into the freezing air duct, thereby rapidly cooling the freezer compartment.

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 includes: If the first temperature of the freezing compartment is lower 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 higher 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 refrigerated 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 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 control method includes: If the refrigeration compressor fails, the temperature-variable damper is controlled to be in a closed state, while 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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