Refrigerator with external refrigerating unit and combined refrigerator

Abstract

The utility model relates to a refrigerator with an external refrigerating unit and a combined refrigerator, and belongs to the technical field of refrigerating equipment. The refrigerator comprises a refrigerator body, a refrigerator door, an evaporator and a refrigerating unit. A storage chamber is defined in the cabinet body, and the storage chamber is provided with an upward storage chamber opening; the cabinet door is arranged at the opening of the storage chamber in a push-pull manner; the evaporator is arranged in the cabinet body; the refrigerating unit and the cabinet body are arranged independently, and the refrigerating unit is arranged outdoors; the refrigerating unit at least comprises a condenser and a compressor, the compressor, the condenser and the evaporator jointly form a refrigerant circulation loop, and refrigerant flows in the refrigerant circulation loop to refrigerate the storage chamber.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and in particular relates to a refrigerator with an external refrigeration unit and a combined refrigerator. Background Art

[0002] Refrigerators are commonly used refrigeration equipment. In people's daily lives, usually one or two refrigerators are enough to meet people's daily needs. However, for supermarkets, catering industries, etc., they need to store more goods and require more refrigerators.

[0003] In the prior art, each horizontal freezer is usually equipped with components such as a compressor and a condenser, which are usually placed in a compressor room between the outer shell and the inner tank. The compressor room causes the interior of the cabinet to become smaller, reducing the loading capacity of the horizontal freezer. In addition, the heat generated by the compressor / condenser is dissipated into the air, causing the ambient temperature to rise, resulting in increased power consumption of the indoor air conditioner. At the same time, the noise generated by the compressor / condensing fan affects the shopping experience.

[0004] Therefore, it is of great significance to design a refrigerator with large loading capacity, low noise and energy saving. Utility Model Content

[0005] In view of the deficiencies existing in the related art, the utility model provides a refrigerator with an external refrigeration unit and a combined refrigerator. The refrigeration unit is arranged outside the cabinet to reduce the space occupied by the refrigeration unit inside the cabinet, so that the cabinet of the refrigerator can have a larger storage room, thereby increasing the loading capacity of the refrigerator. At the same time, since the refrigeration unit is arranged outdoors, the heat exchange in the room is reduced, and the noise generated during the operation of the refrigeration unit is eliminated, thereby achieving the purpose of reducing energy consumption and reducing noise.

[0006] The utility model provides a refrigerator with an external refrigeration unit, comprising:

[0007] A cabinet body, a storage chamber is defined in the interior thereof, and the storage chamber has an upwardly disposed storage chamber opening;

[0008] A cabinet door, which is arranged at the opening of the storage chamber in a push-pull manner;

[0009] an evaporator, which is arranged in the cabinet;

[0010] A refrigeration unit is independently arranged with the cabinet, and the refrigeration unit is arranged outdoors; the refrigeration unit at least comprises:

[0011] Condenser, used for heat exchange with outdoor air;

[0012] A compressor, the compressor, the condenser and the evaporator together form a refrigerant circulation circuit, and a refrigerant flows in the refrigerant circulation circuit to cool the storage chamber.

[0013] The present technical solution arranges the refrigeration unit outside the cabinet to reduce the space occupied by the refrigeration unit inside the cabinet, so that the cabinet of the refrigerator can have a larger storage room, thereby increasing the loading capacity of the refrigerator; at the same time, since the refrigeration unit is arranged outdoors, the heat exchange in the room is reduced, and there is no noise generated during the operation of the refrigeration unit, thereby achieving the purpose of reducing energy consumption and reducing noise.

[0014] In some embodiments, the cabinet includes an outer shell and an inner shell, the inner shell is arranged inside the outer shell, the outer shell and the inner shell together define a foaming space, and the evaporator is arranged in the foaming space; the storage chamber is located inside the inner shell.

[0015] In some embodiments, an installation cavity is defined in the inner tank, and the installation cavity is isolated from the storage chamber; a thermal expansion valve is provided in the installation cavity, and the thermal expansion valve is provided in the refrigerant circulation circuit.

[0016] In some embodiments, the inner container is connected to a cover plate, the cover plate is arranged inside the inner container, and the cover plate and the inner container together define the installation cavity and the storage chamber.

[0017] In some embodiments, a temperature sensing box is provided in the foaming space, and a temperature sensing package of the thermal expansion valve is provided in the temperature sensing box. The temperature sensing package of the thermal expansion valve is placed on the evaporator in the temperature sensing box, and the temperature sensing box is connected to the side of the inner tank away from the storage chamber.

[0018] In some embodiments, a notch is provided on one side of the inner tank, and the notch is communicated with the installation cavity; the temperature sensing box is located at the notch, and the temperature sensing box is connected to a side of the inner tank away from the installation cavity.

[0019] In some embodiments, the shell is connected to a connecting plate, and the connecting plate and the shell together define a pipe space, and at least part of the connecting pipes between the compressor and the evaporator and / or the connecting pipes between the evaporator and the condenser are arranged through the pipe space; the connecting plate is arranged with a side away from the pipe space toward the foaming space.

[0020] In some embodiments, the refrigerant circulation circuit is connected to a solenoid valve, which is disposed in a connecting pipeline between the evaporator and the compressor or in a connecting pipeline between the evaporator and the condenser, and the solenoid valve is located in the pipe space.

[0021] In addition, the utility model also provides a combined refrigerator, including:

[0022] A plurality of the above-mentioned refrigerators are arranged in series; and the plurality of the refrigerators share the same refrigeration unit.

[0023] Based on the above technical scheme, in the embodiments of the utility model, the refrigerator and combined refrigerator with an external refrigeration unit are arranged outside the cabinet body to reduce the space occupied by the refrigeration unit inside the cabinet body, so that the cabinet body of the refrigerator can have a larger storage room, thereby increasing the loading capacity of the refrigerator cabinet body; at the same time, since the refrigeration unit is arranged outdoors, the heat exchange in the room is reduced, and there is no noise generated during the operation of the refrigeration unit, thereby achieving the purpose of reducing energy consumption and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 This is a schematic structural diagram of an embodiment of the combined refrigerator of the utility model;

[0026] Figure 2 The structure of an embodiment of a refrigerator with an external refrigeration unit of the utility model is shown in FIG. Figure 1 ;

[0027] Figure 3 The structure of an embodiment of a refrigerator with an external refrigeration unit of the utility model is shown in FIG. Figure 2 ;

[0028] Figure 4 This is a schematic diagram of the structure inside the cabinet in one embodiment of a refrigerator with an external refrigeration unit of the utility model;

[0029] Figure 5 It is a structural schematic diagram of an embodiment of a refrigerator with an external refrigeration unit of the utility model when a cover plate is not installed inside the cabinet;

[0030] Figure 6 It is a structural schematic diagram of an embodiment of a refrigerator with an external refrigeration unit of the utility model when a cover plate and thermal insulation cotton are not installed inside the cabinet;

[0031] Figure 7 It is a schematic diagram of the partial structure of a cabinet body in one embodiment of a refrigerator with an external refrigeration unit of the utility model;

[0032] Figure 8 It is a structural schematic diagram of the assembly of the connecting plate and the outer shell in one embodiment of the external refrigerator of the refrigeration unit of the utility model;

[0033] Fig. 9 It is a structural schematic diagram of the assembly of the inner tank and the temperature sensing box in one embodiment of the refrigerator with an external refrigeration unit of the utility model;

[0034] Fig.10 This is a schematic diagram of the structure of the inner tank in an embodiment of a refrigerator with an external refrigeration unit of the utility model.

[0035] In the figure:

[0036] 100, cabinet; 200, refrigeration unit; 300, floor; 400, thermal expansion valve; 500, solenoid valve;

[0037] 110, outer shell; 120, cabinet door; 130, liner; 140, cover plate; 150, thermal insulation cotton; 160, connecting plate; 170, temperature sensing box;

[0038] 111. Foaming space;

[0039] 131, storage room; 132, avoidance; 133, gap;

[0040] 161. Pipeline space;

[0041] 301. Pipeline passage. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "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 invention 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 invention.

[0044] 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.

[0045] In the description of the present invention, 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 direct connection, or an indirect connection 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 the present invention can be understood according to specific circumstances.

[0046] As attached Figure 1-Figure 10 As shown, in an illustrative embodiment of a refrigerator with an external refrigeration unit of the utility model, the refrigerator with an external refrigeration unit includes a cabinet body 100, a cabinet door 120, an evaporator, a condenser and a compressor; a storage chamber 131 is defined inside the cabinet body 100, and the storage chamber 131 has an upwardly arranged storage chamber opening; the cabinet door 120 is arranged at the storage chamber opening in a push-pull manner to open or close the storage chamber 131; the evaporator is arranged in the cabinet body 100, and is used to refrigerate the storage chamber 131; the refrigeration unit 200 and the cabinet body 100 are independently arranged, and the refrigeration unit 200 is arranged outdoors, and the refrigeration unit 200 at least includes a compressor and a condenser; the compressor, the condenser and the evaporator together form a refrigerant circulation loop, and the refrigerant flows in the refrigerant circulation loop to cool the storage chamber 131.

[0047] The above-mentioned refrigerator with an external refrigeration unit also includes a fan, which is arranged close to the condenser to promote the contact between air and the condenser, thereby increasing the heat exchange effect between the condenser and the air.

[0048] In a conventional horizontal freezer, the compressor is disposed inside the cabinet 100, and the cabinet 100 is specially provided with a compressor chamber for placing the compressor and other components. When the conventional horizontal freezer is in operation, components such as the fan and the condenser usually generate noise, and the condenser performs heat exchange inside the compressor chamber, resulting in a higher temperature inside the compressor chamber, thereby making the indoor temperature higher.

[0049] In this embodiment, by arranging components such as the compressor and the condenser outdoors and making them operate outdoors, the condenser can exchange heat with the air outdoors, thereby avoiding the increase of indoor temperature due to heat exchange between the condenser and the air, reducing the power consumption of indoor air conditioning and lowering energy consumption; at the same time, since the refrigeration unit operates outdoors, there is no noise from the operation of the refrigeration unit indoors, thereby reducing the indoor noise and bringing a better shopping experience to customers.

[0050] It should be noted that components such as the compressor and condenser are arranged outside the cabinet 100, so that the compressor and condenser do not occupy the internal space of the cabinet 100. Compared with traditional refrigerators, the cabinet 100 can have a larger storage room 131 with the same volume, thereby increasing the loading capacity of the refrigerator.

[0051] The above-mentioned refrigerator with an external refrigeration unit also includes an electronic expansion valve, which is arranged in the refrigerant circulation loop and is usually located between the condenser and the evaporator.

[0052] In some embodiments, the electronic expansion valve is also disposed outside the cabinet 100 .

[0053] In the above-mentioned cold cabinet with an external refrigeration unit, the compressor, condenser and other components are arranged outdoors to reduce the space occupied by the compressor, condenser and other components inside the cabinet 100, so that the cold cabinet can have a larger storage room 131, thereby increasing the loading capacity of the storage room 131; and the condenser can exchange heat with the air outdoors, thereby avoiding the increase in indoor temperature due to the heat exchange between the condenser and the air, which can reduce the power consumption of the air conditioner and thus reduce energy consumption; and because the compressor, condenser, etc. are running outdoors, the indoor noise is reduced.

[0054] In some embodiments, the evaporator is wound around the outer periphery of the inner tank 130 to increase the heat absorption area of ​​the evaporator, thereby increasing the heat exchange effect between the refrigerant and the air in the storage chamber 131.

[0055] Specifically, the compressor is connected to a first pipeline, which is connected to the condenser so that the compressed refrigerant flows into the condenser; the condenser is connected to the evaporator through a second pipeline, and the evaporator is connected to the compressor through a third pipeline so that the refrigerant flows back to the compressor.

[0056] like Figure 6 As shown, the cabinet 100 includes an outer shell 110 and an inner shell 130. The inner shell 130 is arranged inside the outer shell 110. The outer shell 110 and the inner shell 130 together define a foaming space 111. The foaming agent foams in the foaming space 111 to form an insulation layer to insulate the storage chamber 131, so that the storage chamber 131 can maintain a low temperature environment, thereby increasing the refrigeration or freezing effect of the storage chamber 131.

[0057] It should be noted that the evaporator is usually arranged in the foaming space 111; the storage chamber 131 is located inside the inner tank 130.

[0058] like Figure 6 As shown, a thermal expansion valve 400 is usually provided in the refrigerant circulation circuit. The thermal expansion valve 400 is usually arranged close to the evaporator. The thermal expansion valve 400 controls the opening of the expansion valve by the superheat of the gaseous refrigerant at the outlet of the evaporator.

[0059] In a conventional horizontal freezer, the thermal expansion valve 400 is usually placed outside the compressor chamber. The surface of the thermal expansion valve 400 is prone to ice after working for a long time. In order to solve this problem, in this embodiment, an installation cavity is provided inside the inner tank 130, and the thermal expansion valve 400 is located in the installation cavity so that the thermal expansion valve 400 is built-in, thereby preventing the surface of the thermal expansion valve 400 from ice.

[0060] Specifically, Figure 4 As shown, the inner liner 130 is connected to a cover plate 140 , which is disposed inside the inner liner 130 . The cover plate 140 and the inner liner 130 together define an installation cavity and a storage chamber 131 , and the installation cavity and the storage chamber 131 are isolated from each other.

[0061] like Figure 7 As shown, a temperature sensing box 170 is provided in the foaming space 111, and a temperature sensing package of a thermal expansion valve 400 is provided in the temperature sensing box 170. The temperature sensing package of the thermal expansion valve 400 is used to sense the temperature at the outlet of the evaporator, and the temperature sensing package of the thermal expansion valve 400 is placed on the evaporator in the temperature sensing box 170; the temperature sensing box 170 is connected to the side of the inner tank 130 away from the storage chamber 131.

[0062] In some embodiments, Fig.10 As shown, a notch 133 is provided on one side of the inner liner 130 , and the notch 133 is connected to the installation cavity; the temperature sensing box 170 is located at the notch 133 , and the temperature sensing box 170 is connected to a side of the inner liner 130 away from the installation cavity.

[0063] It should be noted that the temperature sensing box 170 , the inner tank 130 and the cover plate 140 together define the installation cavity as a closed space.

[0064] In some embodiments, Figure 5 As shown, the cover plate 140 is connected to the thermal insulation cotton 150, which is arranged on the side of the cover plate 140 facing the installation cavity. The thermal insulation cotton 150 is arranged corresponding to the notch 133. The thermal insulation cotton 150 is used to cover the notch 133, which can not only maintain the integrity and aesthetics of the inner liner 130, but also achieve sound insulation and noise reduction.

[0065] Since the compressor, condenser and other components are arranged outside the cabinet 100, in order to facilitate the connection of the compressor, condenser and other components with the evaporator through pipes and to maintain the aesthetic appearance of the cabinet 100, Figure 7 and Figure 8 As shown, a pipe running space 161 is defined in the cabinet 100 , and a connecting pipe between the compressor and the evaporator and / or a connecting pipe between the evaporator and the condenser is arranged through the pipe running space 161 .

[0066] Specifically, the shell 110 is connected to a connecting plate 160 , and the connecting plate 160 and the shell 110 together define a pipe running space 161 . A side of the connecting plate 160 away from the pipe running space 161 is disposed toward the foaming space 111 .

[0067] Since the pipe space 161 is disposed inside the cabinet 100 , the pipe space 161 occupies the space inside the shell 110 . In order to prevent the inner liner 130 from interfering with the pipe space 161 , the inner liner 130 is provided with an avoidance portion 132 , which is located above the pipe space 161 .

[0068] In some embodiments, the avoidance portion 132 is a step provided on the inner container 130 , and the avoidance portion 132 makes the bottom surface of the storage chamber 131 in the form of a step.

[0069] It should be noted that, although the conventional refrigerator in the prior art has a press chamber for placing a compressor and / or a condenser, so that the bottom surface of the inner tank 130 is also in the form of a step to prevent the inner tank 130 from interfering with the press chamber, but, in this embodiment, the volume of the pipe space 161 is smaller than the volume of the press chamber in the conventional refrigerator. Therefore, in this embodiment, the step of the inner tank 130 is lower and narrower, leaving more internal space for storing goods.

[0070] In some embodiments, the pipe space 161 is located at one end of the cabinet 100 in the length direction.

[0071] In other embodiments, the connecting plate 160 is L-shaped, and the bottom and front and rear sides of the pipe space 161 are open, that is, the bottom and front and rear sides of the pipe space 161 are connected to the outside world, so as to facilitate the arrangement of the connecting pipelines between the compressor and the evaporator and / or the connecting pipelines between the evaporator and the condenser.

[0072] The refrigerant circulation circuit is connected to a solenoid valve 500, which is used to conduct or block the flow of the refrigerant in the refrigerant circulation circuit.

[0073] In some embodiments, the solenoid valve 500 is disposed in the connecting pipeline between the compressor and the evaporator.

[0074] In other embodiments, the solenoid valve 500 is disposed in the connecting pipe between the evaporator and the condenser.

[0075] like Figure 8 As shown, the solenoid valve 500 is disposed in the pipe space 161 to hide the solenoid valve 500 , which can maintain the aesthetics of the refrigerator on the one hand, and protect the solenoid valve 500 on the other hand.

[0076] Based on the above-mentioned refrigerator with an external refrigeration unit, the utility model also provides a combined refrigerator, which includes at least a plurality of the above-mentioned refrigerators. The plurality of refrigerators share a refrigeration unit 200. The refrigeration unit 200 and the cabinet body 100 of each refrigerator are independently arranged. The refrigeration unit 200 is arranged outside the cabinet body 100 so that the refrigeration unit 200 can provide power for the circulation of refrigerant in the plurality of refrigerators at the same time, which can not only increase the overall loading capacity of the combined refrigerator, but also improve resource utilization.

[0077] The refrigeration unit 200 at least includes a condenser and a compressor.

[0078] It should be noted that the number of compressors in the refrigeration unit 200 includes but is not limited to one. In some embodiments, in order to increase the circulation efficiency of the refrigerant, the number of compressors may be set to multiple.

[0079] Similarly, the number of condensers in the refrigeration unit 200 includes but is not limited to one. In some embodiments, in order to increase the heat exchange efficiency between the refrigerant and the outdoor air, the number of condensers may also be set to multiple.

[0080] In a traditional refrigerator, each refrigerator is equipped with components such as a compressor and a condenser. When the current is instantaneously started, it is relatively large. If multiple refrigerators are connected in series, the instantaneous current will be too large, which will cause great pressure on the circuit and cause safety hazards. Therefore, in a traditional refrigerator, each refrigerator needs to be equipped with a separate power supply to supply power. In this embodiment, since there are no high-power electrical components such as compressors and condensers in a single refrigerator, there are only low-power electrical appliances such as thermostats, solenoid valves 500, and lights in the box. Therefore, a socket can be set on the body of each cabinet to connect multiple refrigerators in series. In this way, only a power supply can be set on the cabinet body 100 of a certain refrigerator to supply power to multiple refrigerators, which can reduce the number of power supplies in the combined refrigerator, save costs, and make the whole more neat and beautiful. In addition, multiple refrigerators are connected in series, so that the electrical components of multiple refrigerators can be powered on and off at the same time, which can prevent safety hazards.

[0081] In order to facilitate the diversion of refrigerant from the condenser into multiple evaporators, the second pipeline is respectively connected to multiple second branches, and the multiple second branches are arranged corresponding to the multiple evaporators, so that the refrigerant flowing out of the condenser can flow into the evaporator of the corresponding refrigerator through the second pipeline and the corresponding second branch.

[0082] In order to facilitate the refrigerant in multiple evaporators to flow back to the compressor, the third pipeline is respectively connected to multiple third branches, and the multiple third branches are arranged corresponding to the multiple evaporators, so that the refrigerant in multiple refrigerators can flow back to the compressor through the corresponding third branches.

[0083] In other embodiments, the ground 300 is provided with a pipe passage 301, and at least part of the refrigerant circulation loop is provided in the pipe passage 301. The pipe passage 301 is provided to facilitate the arrangement of pipes, prevent the pipes from crossing each other, and prevent the pipes from affecting the walking of workers.

[0084] In some embodiments, the pipe channel 301 is a groove sunken into the ground 300 .

[0085] The working principle of the above-mentioned combined refrigerator is as follows: the compressor compresses the refrigerant into a high-temperature and high-pressure state, and the refrigerant in the high-temperature and high-pressure state enters the condenser through the first pipeline to exchange heat with the outdoor air and release heat. The refrigerant after heat release enters the evaporator of the corresponding refrigerator through the second pipeline and the corresponding second branch to exchange heat with the air in the storage chamber 131 to cool the storage chamber 131, and finally the refrigerant flows back to the compressor through the third pipeline and the corresponding third branch.

[0086] The above-mentioned combined refrigerator improves the overall energy efficiency level of the centralized operation of multiple refrigerators by allowing multiple refrigerator bodies 100 to share one refrigeration unit 200, reduces operating costs, saves system transformation costs, lowers ambient temperature, and reduces noise.

[0087] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A refrigerator with an external refrigeration unit, characterized in that: include: A cabinet body, a storage chamber is defined inside the cabinet body, and the storage chamber has an upwardly disposed storage chamber opening; A cabinet door, which is arranged at the opening of the storage chamber in a push-pull manner; an evaporator, which is arranged in the cabinet; A refrigeration unit, which is independently arranged from the cabinet, and the refrigeration unit is arranged outdoors; The refrigeration unit at least comprises: Condenser, used for heat exchange with indoor air; A compressor, the compressor, the condenser and the evaporator together form a refrigerant circulation circuit, and a refrigerant flows in the refrigerant circulation circuit to cool the storage chamber.

2. The refrigerator with an external refrigeration unit according to claim 1, characterized in that: The cabinet includes an outer shell and an inner shell, wherein the inner shell is arranged inside the outer shell, and the outer shell and the inner shell together define a foaming space, wherein the evaporator is arranged in the foaming space; and the storage chamber is located inside the inner shell.

3. The refrigerator with an external refrigeration unit according to claim 2, characterized in that: An installation cavity is defined in the inner tank, and the installation cavity is isolated from the storage chamber; a thermal expansion valve is arranged in the installation cavity, and the thermal expansion valve is arranged in the refrigerant circulation circuit.

4. The refrigerator with an external refrigeration unit according to claim 3, characterized in that: The inner container is connected to a cover plate, and the cover plate is arranged inside the inner container. The cover plate and the inner container together define the installation cavity and the storage chamber.

5. The refrigerator with an external refrigeration unit according to claim 3, characterized in that: A temperature sensing box is provided in the foaming space, and a temperature sensing package of the thermal expansion valve is provided in the temperature sensing box. The temperature sensing package of the thermal expansion valve is placed on the evaporator in the temperature sensing box. The temperature sensing box is connected to a side of the inner tank away from the storage chamber.

6. The refrigerator with an external refrigeration unit according to claim 5, characterized in that: A notch is provided on one side of the inner tank, and the notch is communicated with the installation cavity; the temperature sensing box is located at the notch, and the temperature sensing box is connected to a side of the inner tank away from the installation cavity.

7. The refrigerator with an external refrigeration unit according to claim 3, characterized in that: The outer shell is connected to a connecting plate, and the connecting plate and the outer shell together define a pipe space, and at least part of the connecting pipes between the compressor and the evaporator and / or the connecting pipes between the evaporator and the condenser are arranged through the pipe space; the connecting plate is arranged with a side away from the pipe space toward the foaming space.

8. The refrigerator with an external refrigeration unit according to claim 7, characterized in that: The refrigerant circulation circuit is connected to a solenoid valve, which is arranged in a connecting pipeline between the evaporator and the compressor or in a connecting pipeline between the evaporator and the condenser, and the solenoid valve is located in the pipe space.

9. A combined refrigerator, characterized in that: include: A plurality of refrigerators according to any one of claims 1 to 8, wherein the plurality of refrigerators are arranged in series with each other; and the plurality of refrigerators share the same refrigeration unit.

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