Mechanical temperature control refrigerator

Abstract

The invention discloses a mechanical temperature control refrigerator. The refrigerator comprises a temperature controller and a refrigerating system. The temperature controller controls operation of a compressor in the refrigerating system by monitoring the temperature of a storage chamber of the refrigerator. The refrigerator further comprises an illuminating lamp and a two-way switch. The movable end of the two-way switch is connected with the first end of the alternating current power supply side of the refrigerator, the first fixed end of the two-way switch is connected with the first end of the illuminating lamp, and the second end of the illuminating lamp is connected with the second end of the alternating current power supply side of the refrigerator; the refrigerator further comprises a capacitor. The illuminating lamp is a thermal light source and is used for generating heat to heat a temperature sensing head of the temperature controller; the second fixed end of the two-way switch is connected with the first end of the illuminating lamp through the capacitor. Potential safety hazards caused by long-term heating of the heating wire in the foaming layer can be eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and in particular to a mechanical temperature-controlled refrigerator. Background Art

[0002] Mechanical temperature control refrigerators use mechanical thermostats to monitor the temperature of the refrigerated compartment, thereby controlling the compressor to start and stop. In winter, when the ambient temperature is low, the refrigerated compartment has good insulation effect and the temperature of the refrigerated compartment is low, it is easy for the compressor to fail to start, resulting in freezing without refrigeration.

[0003] Existing mechanical temperature control refrigerators generally use aluminum foil heating wires attached to the refrigerated compartment box and buried in the foam layer. When the ambient temperature is low in winter, the heating wire is controlled to heat up to generate heat so that the temperature of the mechanical thermostat temperature sensor increases to the start point of the refrigerated compartment, thereby starting the compressor to refrigerate. However, this existing temperature control method has safety hazards due to the long-term heating of the heating wire buried in the foam layer. Summary of the invention

[0004] In view of the above technical problems, the purpose of the embodiments of the present invention is to provide a mechanical temperature-controlled refrigerator that can eliminate the safety hazard caused by long-term heating of the heating wire in the foaming layer.

[0005] An embodiment of the present invention provides a mechanical temperature-controlled refrigerator, the refrigerator comprising: a temperature controller and a refrigeration system;

[0006] The thermostat controls the operation of the compressor in the refrigeration system by monitoring the temperature of the storage compartment of the refrigerator;

[0007] The refrigerator also includes a lighting lamp and a two-way switch;

[0008] The movable end of the two-way switch is connected to the first end of the AC power supply side of the refrigerator, the first fixed end of the two-way switch is connected to the first end of the lighting lamp, and the second end of the lighting lamp is connected to the second end of the AC power supply side of the refrigerator;

[0009] The refrigerator further comprises a capacitor;

[0010] The lighting lamp is a heat light source, which is used to generate heat to heat the temperature sensing head of the thermostat;

[0011] The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor.

[0012] Preferably, the two-way switch is a door switch of the refrigerator;

[0013] When the refrigerator door is opened, the movable end of the two-way switch is connected to the first fixed end;

[0014] When the refrigerator door is closed, the movable end of the two-way switch is connected to the second fixed end.

[0015] As a preferred solution, the refrigerator further includes a control switch;

[0016] The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor, specifically:

[0017] The second fixed end of the two-way switch is connected to the first end of the lighting lamp after passing through the control switch and the capacitor.

[0018] As an improvement of the above solution, the control switch is specifically a temperature compensation switch;

[0019] The temperature compensation switch switches from an open state to a closed state when the monitored temperature is lower than a preset action temperature; and switches from a closed state to an open state when the monitored temperature is not lower than the action temperature.

[0020] Preferably, the refrigerator further comprises a detachable device;

[0021] The lighting lamp is installed inside the storage room through the detachable device;

[0022] The temperature sensing head of the thermostat is installed close to the lighting lamp.

[0023] Furthermore, the temperature controller is installed inside the detachable device.

[0024] As a preferred solution, the refrigerator further includes a running capacitor and a starter;

[0025] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, and the operating end of the compressor is connected to the second end of the AC power supply side of the refrigerator;

[0026] The starting end of the compressor is connected to the running end of the compressor through the starter, and the starting end of the compressor is also connected to the running end of the compressor through the running capacitor.

[0027] Preferably, the refrigerator further comprises an overload protector;

[0028] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, specifically:

[0029] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor after passing through the thermostat and the overload protector.

[0030] Preferably, the refrigerator further comprises a detachable device for mounting the lighting lamp;

[0031] The temperature compensation switch is installed inside the detachable device.

[0032] Preferably, the lighting lamp is an incandescent lamp.

[0033] Compared with the prior art, the present invention discloses a mechanical temperature-controlled refrigerator, which includes: a thermostat and a refrigeration system; the thermostat controls the operation of the compressor in the refrigeration system by monitoring the temperature of the storage chamber of the refrigerator; the refrigerator also includes a lighting lamp and a two-way switch; the moving end of the two-way switch is connected to the first end of the AC power supply side of the refrigerator, the first fixed end of the two-way switch is connected to the first end of the lighting lamp, and the second end of the lighting lamp is connected to the second end of the AC power supply side of the refrigerator; the refrigerator also includes a capacitor; the lighting lamp is a heat source for generating heat to heat the temperature sensing head of the thermostat; the second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor. It can eliminate the potential safety hazards caused by long-term heating of the heating wire in the foaming layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a refrigeration system of a refrigerator provided in an embodiment of the present invention;

[0036] Figure 3 It is a structural schematic diagram of an existing mechanical temperature-controlled refrigerator;

[0037] Figure 4 is a structural schematic diagram of another existing mechanical temperature-controlled refrigerator;

[0038] Figure 5 It is a schematic diagram of the current loop of an existing mechanical temperature-controlled refrigerator;

[0039] Figure 6 is a schematic structural diagram of a temperature-controlled refrigerator provided by the present invention in a first embodiment;

[0040] Figure 7 is a schematic diagram of a current loop of a mechanical temperature-controlled refrigerator provided by an embodiment of the present invention;

[0041] Figure 8 is a structural schematic diagram of a temperature-controlled refrigerator provided by the present invention in a second embodiment;

[0042] Fig. 9 is a structural schematic diagram of a mechanical temperature-controlled refrigerator provided by the present invention in a third embodiment;

[0043] Fig.10It is a schematic structural diagram of the mechanical temperature-controlled refrigerator provided by the present invention in the fourth embodiment. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] See also Figure 1 , is a structural schematic diagram of a refrigerator provided by an embodiment of the present invention. The embodiment of the present invention provides a refrigerator, including a box body 101, in which a storage chamber 102 is provided, including a refrigerator chamber and / or a freezer chamber for storing items with preservation or freezing requirements, and also includes a refrigeration system 104 for performing refrigeration operations of the refrigerator.

[0049] It should be noted that the refrigerator performs refrigeration operation through the refrigeration system to provide cold energy to the storage chamber so as to maintain the storage chamber at a constant low temperature. Figure 2, is a schematic diagram of the refrigeration system structure of the refrigerator provided in an embodiment of the present invention, the refrigeration system is composed of a compressor 201, a condenser 202, a drying filter 203, a capillary 204, and an evaporator 205, and the working structure of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process.

[0050] The compression process is as follows: plug in the power cord of the refrigerator, and when the box needs to be cooled, the compressor starts to work, and the low-temperature, low-pressure refrigerant is sucked into the compressor, compressed into high-temperature, high-pressure superheated gas in the compressor cylinder, and then discharged into the condenser; the condensation process is as follows: the high-temperature, high-pressure refrigerant gas dissipates heat through the condenser, the temperature continues to drop, and is gradually cooled to a saturated vapor at room temperature and high pressure, and further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature. The pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary after the moisture and impurities are filtered out by the drying filter, and the refrigerant is throttled and depressurized through it, and the refrigerant becomes a wet vapor at room temperature and low pressure; the evaporation process is as follows: it then begins to absorb heat and vaporize in the evaporator, which not only reduces the temperature of the evaporator and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator returns to the compressor again, repeating the above process, transferring the heat in the refrigerator to the air outside the box, and achieving the purpose of refrigeration.

[0051] It should be noted that the above embodiment is only a specific structure and working principle of a conventional refrigerator. The refrigerator disclosed in this embodiment may also have the structure of the above-mentioned existing refrigerator to achieve corresponding functions.

[0052] Mechanical temperature control refrigerators use mechanical thermostats to monitor the temperature of the refrigerated compartment, thereby controlling the compressor to start and stop. In winter, when the ambient temperature is low, the refrigerated compartment has good insulation effect and the temperature of the refrigerated compartment is low, it is easy for the compressor to fail to start, resulting in freezing without refrigeration.

[0053] See also Figure 3 , is a schematic diagram of the structure of an existing mechanical temperature-controlled refrigerator, including a thermostat 301 and a compressor 201; when the compressor is working normally, a starter 302 and a running capacitor 303 are also configured;

[0054] The live wire terminal L of the AC power supply side of the power plug of the refrigerator is connected to the common terminal C of the compressor 201 through the thermostat 301, and the running terminal R of the compressor 201 is connected to the neutral wire terminal N of the AC power supply side;

[0055] The starting end S of the compressor 201 is connected to the running end R of the compressor 201 through the starter 302 , and the starting end S of the compressor 201 is also connected to the running end R of the compressor 201 through the running capacitor 303 .

[0056] The thermostat monitors the temperature of the refrigerator's refrigerator compartment. When the temperature is high, it is turned on. The AC power supply side supplies power to the compressor, the compressor starts, and the refrigeration system cools the refrigerator to lower the temperature. When the temperature is low, it is disconnected, the power supply to the compressor is stopped, the compressor does not work, and the refrigeration system does not cool the refrigerator to prevent the refrigerator temperature from being too low.

[0057] With the existing mechanical temperature control method, when the ambient temperature is low in winter, the cold storage room has good insulation effect and the temperature in the cold storage room is low, resulting in the thermostat temperature sensor failing to reach the refrigeration start point, the compressor is always in the shutdown state, and the freezer cannot be refrigerated.

[0058] In order to prevent the compressor from being in a long-term shutdown state, the existing mechanical temperature control refrigerator generally needs to be equipped with a compensation heating wire 402, see Figure 4 , is a structural diagram of another existing mechanical temperature control refrigerator, in which the compensation heating wire is further provided with a compensation control switch 401;

[0059] The thermostat 301 is composed of two switches. The first switch is connected to the first end of the compensation heating wire 402 through the compensation control switch 401. The second end of the compensation heating wire 402 is connected to the common end C of the compressor 201. The first switch is also connected to the common end C of the compressor 201 through the second switch.

[0060] During specific operation, when the ambient temperature is high, temperature compensation is not required. At this time, the compensation control switch is disconnected, and the compensation heating wire is not connected to the circuit. At this time, the compressor is controlled by the first switch and the second switch of the thermostat. When the temperature reaches the start-up point, the thermostat is closed. At this time, the compressor is connected to the circuit and starts cooling.

[0061] When the ambient temperature is low, temperature compensation is required. Figure 5 , is a schematic diagram of the current loop of an existing mechanical temperature-controlled refrigerator. At this time, the compensation control switch is turned on, the compensation heating wire is connected to the circuit, the first switch of the thermostat is turned on, and the live wire end L returns to the neutral wire end N via the first switch of the thermostat, the compensation control switch, the compensation heating wire, and the running end R of the compressor, forming the first current loop A; at this time, the compensation heating wire starts to work, generates heat, and starts to heat the temperature sensing head of the thermostat, so that the temperature sensing head of the thermostat reaches the preset start-up point, and at this time, the second switch of the thermostat is turned on, and at this time, the live wire end L returns to the neutral wire end N via the first switch of the thermostat, the second switch, and the starting section S of the compressor, forming the first current loop B; at this time, the compensation heating wire branch is short-circuited and stops heating.

[0062] Heating the temperature sensing head of the thermostat by means of a compensation heating wire can avoid the problem of long-term shutdown and non-refrigeration of the temperature-controlled refrigerator at low temperatures. However, the existing temperature-compensated temperature-controlled refrigerators basically use an aluminum foil heating wire attached to the refrigerated compartment box, buried in the foam layer to heat the temperature sensing head of the thermostat to achieve temperature compensation. This method of heating the heating wire buried in the refrigerated compartment box for a long time may cause the foam layer to turn yellow or even deform, posing certain safety hazards.

[0063] In view of this technical problem of the prior art, the present application proposes a mechanical temperature-controlled refrigerator, the refrigerator comprising: a temperature controller and a refrigeration system;

[0064] The thermostat controls the operation of the compressor in the refrigeration system by monitoring the temperature of the storage compartment of the refrigerator;

[0065] The refrigerator also includes a lighting lamp and a two-way switch;

[0066] The movable end of the two-way switch is connected to the first end of the AC power supply side of the refrigerator, the first fixed end of the two-way switch is connected to the first end of the lighting lamp, and the second end of the lighting lamp is connected to the second end of the AC power supply side of the refrigerator;

[0067] The refrigerator further comprises a capacitor;

[0068] The lighting lamp is a heat light source, which is used to generate heat to heat the temperature sensing head of the thermostat;

[0069] The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor.

[0070] When this embodiment is implemented, see Figure 3 , the refrigerator includes a thermostat 301 and a compressor 201;

[0071] The thermostat 301 is in the loop between the compressor 201 and the AC power supply side. The thermostat controls the disconnection or conduction of the compressor power supply loop and the operation of the compressor by monitoring the temperature of the storage compartment of the refrigerator.

[0072] See also Figure 6 , is a schematic diagram of the structure of the temperature-controlled refrigerator provided by the present invention in the first embodiment; the refrigerator further includes a lighting lamp 601, a two-way switch 602 and a capacitor 603;

[0073] The moving end G of the two-way switch is connected to the live wire end L of the AC power supply side of the power plug, the first fixed end D1 of the two-way switch is connected to the first end of the illuminating lamp 601, and the second end of the illuminating lamp 601 is connected to the neutral wire end N of the AC power supply side of the power plug. The second fixed end D2 of the two-way switch is connected to the first end of the illuminating lamp 601 through the capacitor 603.

[0074] The lighting lamp is a heat light source, which is used to generate heat to heat the temperature sensing head of the thermostat.

[0075] See also Figure 7 , is a schematic diagram of a current loop of a mechanical temperature-controlled refrigerator provided by an embodiment of the present invention. When temperature compensation is required, when the moving end of the two-way switch is connected to the first end of the AC power supply side, the lighting lamp is connected to the AC power supply loop. At this time, the live wire end L returns to the neutral wire end N via the moving end of the two-way switch, the first fixed end, and the lighting lamp to form a third current loop C; the lighting lamp emits light for illumination, and the lighting lamp as a heat light source generates heat to perform temperature compensation on the temperature sensing head of the thermostat, so that the thermostat reaches the start-up point, controls the loop of the compressor to be turned on, and the compressor starts to work.

[0076] When the moving end of the two-way switch is connected to the second end of the AC power supply side, the lighting lamp can also be connected to the AC power supply circuit. At this time, the live wire end L returns to the neutral wire end N via the moving end of the two-way switch, the second fixed end, the capacitor, and the lighting lamp, forming a fourth current loop D; at this time, due to the voltage dividing effect of the capacitor on the lighting lamp, the voltage across the two ends of the lighting lamp is small, and the lighting lamp cannot emit light, reducing energy loss, but there is still AC current at both ends of the lighting lamp. The lighting lamp, as a heat light source, can generate heat to compensate the temperature of the temperature sensing head of the thermostat, so that the thermostat reaches the start-up point, controls the circuit conduction of the compressor, and the compressor starts to work.

[0077] By using a two-way switch, a capacitor and a heat light source as a lighting lamp, temperature compensation can be achieved whether the lighting lamp is lit or not, and temperature compensation through the lighting lamp of the heat light source can avoid the safety hazards caused by the heating wire installed in the foaming layer.

[0078] In another embodiment provided by the present invention, the two-way switch is a door switch of the refrigerator;

[0079] When the refrigerator door is opened, the movable end of the two-way switch is connected to the first fixed end;

[0080] When the refrigerator door is closed, the movable end of the two-way switch is connected to the second fixed end.

[0081] In the specific implementation of this embodiment, the two-way switch is the door switch of the refrigerator, and the switch state of the two-way switch is switched with the movement of the refrigerator door.

[0082] When the door of the refrigerator is opened, the moving end of the two-way switch is connected to the first fixed end. At this time, the circuit current flows according to the third current loop C. The refrigerator light is illuminated to illuminate the interior of the refrigerator, making it convenient for users to take and put items.

[0083] When the refrigerator door is closed, the moving end of the two-way switch is connected to the second fixed end. At this time, the circuit current flows with reference to the fourth current loop D. The refrigerator light does not light up at this time, and the electric energy is only used to generate heat. When the refrigerator door is closed, the light does not light up, avoiding energy loss caused by light emission, and also avoiding abnormal behavior of the light being illuminated for a long time when the refrigerator door is closed, causing confusion to users.

[0084] In another embodiment provided by the present invention, the refrigerator further includes a control switch;

[0085] The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor, specifically:

[0086] The second fixed end of the two-way switch is connected to the first end of the lighting lamp after passing through the control switch and the capacitor.

[0087] When this embodiment is implemented, see Figure 8 , is a schematic diagram of the structure of the temperature-controlled refrigerator provided by the present invention in the second embodiment; the refrigerator further includes a control switch 801 for temperature compensation control;

[0088] The second fixed end D2 of the two-way switch is connected to the first end of the control switch 801 , the second end of the control switch 801 is connected to the first end of the capacitor 603 , and the second end of the capacitor 603 is connected to the first end of the lighting lamp 601 .

[0089] Whether the temperature compensation is enabled can be controlled by the control switch. When the temperature compensation is not needed, the control switch is turned off, and the branch of the second fixed end of the two-way switch formed by the capacitor is disconnected. When the two-way switch is switched to the second fixed end, that is, when the refrigerator door is closed, the fourth current loop D is disconnected by the control switch, and the lighting lamp does not work and does not generate heat. When the refrigerator door is opened, the two-way switch is switched to the first fixed end, and the third current loop C is turned on. At this time, the lighting lamp works, emits light and generates heat. However, since the state of the refrigerator door being opened generally lasts for a short time, the heat provided is difficult to make the thermostat reach the start-up point. Even if it reaches the start-up point, after the refrigerator door is closed, the heat of the lighting lamp is lost and the compressor quickly stops.

[0090] When temperature compensation is required, the control switch is closed, and the branch of the second fixed end of the two-way switch formed by the capacitor is turned on. When the refrigerator door is opened, the moving end of the two-way switch is connected to the first fixed end. At this time, the circuit current flows with reference to the third current loop C, and the refrigerator lamp emits light and generates heat. When the refrigerator door is closed, the moving end of the two-way switch is connected to the second fixed end. At this time, the circuit current flows with reference to the fourth current loop D, and the refrigerator lamp does not emit light. The electric energy is only used to generate heat. When the refrigerator door is closed, the lamp does not emit light to avoid energy loss caused by light emission.

[0091] In another embodiment provided by the present invention, the control switch is specifically a temperature compensation switch;

[0092] The temperature compensation switch switches from an open state to a closed state when the monitored temperature is lower than a preset action temperature; and switches from a closed state to an open state when the monitored temperature is not lower than the action temperature.

[0093] In the specific implementation of this embodiment, the control switch is specifically a temperature compensation switch. When the monitored temperature is lower than the preset action temperature, that is, the temperature is low in winter and the indoor temperature may be lower than the temperature of the refrigerator, the temperature compensation switch needs to be turned on, and the temperature compensation switch is switched from an open state to a closed state; when the monitored temperature is not lower than the action temperature, the ambient temperature is high. At this time, the thermostat does not need temperature compensation, and the temperature compensation switch is switched from a closed state to an open state.

[0094] The temperature compensation switch can determine whether temperature compensation is needed based on temperature changes, thereby ensuring the stable operation of the mechanical temperature-controlled refrigerator.

[0095] In another embodiment provided by the present invention, the refrigerator further comprises a detachable device;

[0096] The lighting lamp is installed inside the storage room through the detachable device;

[0097] The temperature sensing head of the thermostat is installed close to the lighting lamp.

[0098] In the specific implementation of this embodiment, the detachable device is installed on the top of the refrigerator's cold storage compartment through a detachable design. The detachable device includes a transparent light-guiding layer. The lighting lamp is installed inside the detachable device and fixed to the top of the cold storage compartment through the detachable device to guide light through the transparent light-guiding layer.

[0099] The temperature sensing head of the thermostat is installed close to the lighting lamp. When the lighting lamp generates heat, the temperature sensing head of the thermostat can be directly heated by heat conduction, thereby achieving a rapid response of temperature compensation.

[0100] Since the heat light source has a limited lifespan, it is installed in the refrigerator storage compartment through a detachable device, which is convenient for replacement when the lighting lamp is damaged and for convenient maintenance.

[0101] In another embodiment provided by the present invention, the thermostat is installed inside the detachable device.

[0102] In the specific implementation of this embodiment, the thermostat is installed inside the detachable device, which is convenient for maintenance of the thermostat.

[0103] In another embodiment provided by the present invention, the refrigerator further includes a running capacitor and a starter;

[0104] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, and the operating end of the compressor is connected to the second end of the AC power supply side of the refrigerator;

[0105] The starting end of the compressor is connected to the running end of the compressor through the starter, and the starting end of the compressor is also connected to the running end of the compressor through the running capacitor.

[0106] When this embodiment is implemented, see Fig. 9 , is a schematic structural diagram of a mechanical temperature-controlled refrigerator provided by the present invention in a third embodiment;

[0107] The refrigerator further includes a running capacitor 303 and a starter 302;

[0108] The live wire terminal L of the AC power supply side of the power plug of the refrigerator is connected to the common terminal C of the compressor 201 through the thermostat 301, and the running terminal R of the compressor 201 is connected to the neutral wire terminal N of the AC power supply side;

[0109] The starting end S of the compressor 201 is connected to the running end R of the compressor 201 through the starter 302 , and the starting end S of the compressor 201 is also connected to the running end R of the compressor 201 through the running capacitor 303 .

[0110] The thermostat monitors the temperature and controls whether it is turned on, thereby controlling whether power is supplied to the compressor and whether the compressor is turned on.

[0111] In another embodiment provided by the present invention, the refrigerator further comprises an overload protector;

[0112] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, specifically:

[0113] The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor after passing through the thermostat and the overload protector.

[0114] When this embodiment is implemented, see Fig.10 , is a schematic structural diagram of a mechanical temperature-controlled refrigerator provided by the present invention in a fourth embodiment;

[0115] The refrigerator further includes an overload protector 1001;

[0116] The live wire terminal L of the AC power supply side of the power plug of the refrigerator is connected to the first end of the overload protector 1001 through the thermostat 301, the second end of the overload protector 1001 is connected to the common terminal C of the compressor 201, and the running terminal R of the compressor 201 is connected to the neutral wire terminal N of the AC power supply side;

[0117] As a preferred solution, the overload protector adopts a snap-type bimetallic protector, which is composed of a heating wire, a bimetallic strip and two static contacts connected in series to the power supply circuit of the compressor. When the current passing through the compressor increases for no reason, the heating wire will generate a large amount of heat and melt, thereby disconnecting the power supply of the compressor, preventing the compressor from being damaged due to current overload.

[0118] The overload protector can protect the compressor from overload damage.

[0119] In another embodiment provided by the present invention, the refrigerator further comprises a detachable device for installing the lighting lamp;

[0120] The temperature compensation switch is installed inside the detachable device.

[0121] In the specific implementation of this embodiment, the detachable device is installed on the top of the refrigerator's cold storage compartment through a detachable design. The detachable device includes a transparent light-guiding layer. The lighting lamp is installed inside the detachable device and fixed to the top of the cold storage compartment through the detachable device to guide light through the transparent light-guiding layer.

[0122] By installing the temperature compensation switch inside the detachable device, when the temperature compensation switch is damaged, it can be repaired through the detachable device.

[0123] In another embodiment provided by the present invention, the lighting lamp is an incandescent lamp.

[0124] In the specific implementation of this embodiment, the lighting lamp of the heat light source can be specifically an incandescent lamp. The grid frequency of the incandescent lamp is 50HZ, which is much higher than the reaction speed of the human eye. In addition, the filament has a period of inertia after being ignited and cooled. Therefore, when the grid is stable, the flicker is low and can even be ignored, so it will not cause discomfort to the human eye. In addition, the advantage of the incandescent lamp is that it has good color rendering. When lighting the interior of the refrigerator, it can reduce the color difference of the food caused by the light, which affects the user experience.

[0125] It should be noted that in other embodiments, the lighting lamp may also adopt other thermal light sources, such as sodium lamp, mercury lamp, halogen lamp, etc.

[0126] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A mechanical temperature-controlled refrigerator, characterized in that: The refrigerator comprises: a thermostat and a refrigeration system; The thermostat controls the operation of the compressor in the refrigeration system by monitoring the temperature of the storage compartment of the refrigerator; The refrigerator also includes a lighting lamp and a two-way switch; The movable end of the two-way switch is connected to the first end of the AC power supply side of the refrigerator, the first fixed end of the two-way switch is connected to the first end of the lighting lamp, and the second end of the lighting lamp is connected to the second end of the AC power supply side of the refrigerator; The refrigerator further comprises a capacitor; The lighting lamp is a heat light source, which is used to generate heat to heat the temperature sensing head of the thermostat; The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor.

2. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The two-way switch is a door switch of the refrigerator; When the refrigerator door is opened, the movable end of the two-way switch is connected to the first fixed end; When the refrigerator door is closed, the movable end of the two-way switch is connected to the second fixed end.

3. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The refrigerator also includes a control switch; The second fixed end of the two-way switch is connected to the first end of the lighting lamp through the capacitor, specifically: The second fixed end of the two-way switch is connected to the first end of the lighting lamp after passing through the control switch and the capacitor.

4. The mechanical temperature-controlled refrigerator according to claim 3, characterized in that: The control switch is specifically a temperature compensation switch; The temperature compensation switch switches from an open state to a closed state when the monitored temperature is lower than a preset action temperature; and switches from a closed state to an open state when the monitored temperature is not lower than the action temperature.

5. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The refrigerator further comprises a detachable device; The lighting lamp is installed inside the storage room through the detachable device; The temperature sensing head of the thermostat is installed close to the lighting lamp.

6. The mechanical temperature-controlled refrigerator according to claim 5, characterized in that: The thermostat is installed inside the detachable device.

7. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The refrigerator also includes a running capacitor and a starter; The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, and the operating end of the compressor is connected to the second end of the AC power supply side of the refrigerator; The starting end of the compressor is connected to the running end of the compressor through the starter, and the starting end of the compressor is also connected to the running end of the compressor through the running capacitor.

8. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The refrigerator also includes an overload protector; The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor through the thermostat, specifically: The first end of the AC power supply side of the refrigerator is connected to the common end of the compressor after passing through the thermostat and the overload protector.

9. The mechanical temperature-controlled refrigerator according to claim 2, characterized in that: The refrigerator further comprises a detachable device for mounting the lighting lamp; The temperature compensation switch is installed inside the detachable device.

10. The mechanical temperature-controlled refrigerator according to claim 1, characterized in that: The lighting lamp is an incandescent lamp.

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