Refrigerating system and refrigerating equipment

Abstract

The utility model belongs to the technical field related to refrigeration, and particularly relates to a refrigeration system and refrigeration device.The refrigeration system comprises a refrigeration assembly, a first throttling element, a second throttling element and an evaporator; the refrigeration circulation loop comprises a main pipeline, a first branch and a second branch, the first branch and the condenser are arranged in parallel, the second throttling element is arranged on the second branch, and the second throttling element and the first throttling element are arranged in parallel; the anti-condensation pipe is arranged on the second branch and connected with an inlet of the second throttling element. And the valve group is arranged in the refrigeration circulation loop, and the valve group is configured to enable the outlet of the condenser to be communicated with the second branch or selectively enable the first branch to be communicated with the second branch at the same time so as to remove condensation of the anti-condensation pipe. Different condensation removal methods can be selected according to the condensation severity, the condensation removal time is shortened, the anti-condensation effect is improved, and the system power consumption is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration, and more particularly, to a refrigeration system and a refrigeration device. BACKGROUND

[0002] In a refrigeration device such as a refrigerator, in order to prevent condensation from occurring at the door frame and the door seal, an anti-condensation pipe is usually installed in the interlayer of the door frame of the cabinet, and the refrigerant flows through the anti-condensation pipe after coming out of the condenser to increase the temperature at the door frame, balance the temperature of the refrigerator door frame with the outside temperature, reduce the contact between cold and hot air, and achieve the effect of preventing condensation. However, in the case of a low-humidity environment, condensation will not occur, and if the refrigerant flows through the anti-condensation pipe, a part of the heat will be wasted, increasing the system heat load. When the condensation problem is more serious, for example, in the case of a high ambient temperature and a high relative humidity, the temperature at the door frame increases slowly and cannot quickly reach the purpose of removing condensation, resulting in a poor user experience. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a refrigeration system and a refrigeration device, which can select different condensation removal methods according to the severity of condensation, shorten the condensation removal time, improve the anti-condensation effect, and reduce the system power consumption.

[0004] In a first aspect, the present application provides a refrigeration system, comprising: a refrigeration assembly comprising a compressor, a condenser, a first throttling element, a second throttling element, and an evaporator; a refrigeration cycle circuit comprising a main pipeline, a first branch pipeline, and a second branch pipeline, the compressor, the condenser, the first throttling element, and the evaporator being arranged in the main pipeline in sequence, the first branch pipeline being arranged in parallel with the condenser, the second throttling element being arranged in the second branch pipeline, and the second throttling element being arranged in parallel with the first throttling element; an anti-condensation pipe arranged in the second branch pipeline and connected with the inlet of the second throttling element; and a valve group arranged in the refrigeration cycle circuit, the valve group being configured to make the outlet of the condenser conductive with the second branch pipeline, or simultaneously selectively make the first branch pipeline and the second branch pipeline conductive, so as to remove condensation from the anti-condensation pipe.

[0005] According to the refrigeration system provided in the embodiments of the present application, the valve group is arranged in the refrigeration cycle loop, the compressor, the condenser, the first throttling element and the evaporator are arranged in the main pipeline in sequence, the first branch pipeline is arranged in parallel with the condenser, the second throttling element is arranged in the second branch pipeline, the second throttling element is arranged in parallel with the first throttling element, the anti-condensation pipeline is arranged in the second branch pipeline and connected with the inlet of the second throttling element; when the ambient temperature and the ambient relative humidity are relatively large, the condensation problem is relatively serious, the valve group is configured to make the outlet of the condenser conductive with the second branch pipeline, or to selectively make the first branch pipeline and the second branch pipeline conductive at the same time, so as to remove the condensation from the anti-condensation pipeline, thereby most of the condensation can be quickly removed by using the exhaust heat of the compressor, the condensation removal time is shortened, and the condensation removal effect is more significant; when the ambient temperature and the ambient relative humidity are relatively small, only the outlet of the condenser and the second branch pipeline can be made conductive to normally remove the condensation from the anti-condensation pipeline, so that different condensation removal methods can be selected according to the condensation severity, the condensation removal time is shortened, the anti-condensation effect is improved, and the system power consumption is reduced.

[0006] In addition, the refrigeration system according to the present application can also have the following additional technical features:

[0007] In some embodiments of the present application, the valve group includes a first valve body and a second valve body, the first valve body includes a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is connected with the first branch pipeline, the second inlet is connected with the outlet of the condenser, the first outlet is in communication with the inlet of the first throttling element, and the second outlet is connected with the inlet of the anti-condensation pipeline; the second valve body is arranged on the first branch pipeline and used for controlling the on-off of the first branch pipeline. In some embodiments of the present application, the valve group includes a first valve body and a second valve body, the first valve body includes a second inlet, a first outlet and a second outlet, the second inlet is connected with the outlet of the condenser, the first outlet is in communication with the inlet of the first throttling element, and the second outlet is connected with the inlet of the anti-condensation pipeline; the first branch pipeline is connected between the exhaust end of the compressor and the inlet of the anti-condensation pipeline, and the second valve body is arranged on the first branch pipeline and used for controlling the on-off of the first branch pipeline.

[0008] In some embodiments of the present application, the refrigeration cycle loop further includes a third branch pipeline arranged in parallel with the second branch pipeline; and the valve group is further configured to selectively make the first branch pipeline and the third branch pipeline conductive to defrost the evaporator.

[0009] In some embodiments of the present application, the first valve body further includes a third outlet in communication with the third branch pipeline.

[0010] In some embodiments of the present application, the refrigeration cycle loop further includes a third branch pipeline connected between the first branch pipeline and the inlet of the evaporator; and the valve group further includes a third valve body arranged on the third branch pipeline.

[0011] In some embodiments of the present application, the compressor comprises a shell having an inner cavity, and a muffler, a cylinder and a high-pressure cabin arranged in the inner cavity, the shell is provided with a plurality of return gas pipes, exhaust pipes and process pipes arranged at intervals, the return gas pipes are in communication with the cavity of the muffler, the exhaust pipes are in communication with the high-pressure cabin, and the process pipes are in communication with the inner cavity; the refrigeration system further comprises a fourth valve body, the fourth valve body comprises a third inlet, a fourth outlet and a fifth outlet, the third inlet is connected with the outlet of the evaporator, the fourth outlet is connected with the return gas pipe, and the fifth outlet is connected with the process pipe, and the fourth valve body is configured to connect the third inlet and the fifth outlet, so that the refrigerant after defrosting flows through the process pipe into the inner cavity of the compressor and preheats the refrigerant.

[0012] In some embodiments of the present application, the muffler is provided with an air inlet, the high-pressure cabin is provided with an exhaust outlet, one end of the return gas pipe extending into the inner cavity is arranged opposite to and spaced apart from the air inlet, one end of the exhaust pipe extending into the inner cavity is connected with the exhaust outlet through a pipeline, and one end of the process pipe extending into the inner cavity is spaced apart from the air inlet by a preset distance.

[0013] In some embodiments of the present application, the refrigeration system further comprises a heater arranged on the process pipe.

[0014] In the second aspect, the present application provides a refrigeration device comprising the refrigeration system of any of the embodiments of the present application.

[0015] The above description is only a summary of the technical solutions of the present application, in order to enable the person skilled in the art to better understand and implement the technical solutions of the present application according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are merely schematic and are not intended to be limiting of the present application. Like reference numerals are intended to represent like parts throughout the various drawings. In which:

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are merely schematic and are not intended to be limiting of the present application. Like reference numerals are intended to represent like parts throughout the various drawings. In which:

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a refrigeration system according to an embodiment of the present application;

[0019] Figure 2 FIG. 2 is a structural schematic diagram of a refrigeration system according to another embodiment of the present application;

[0020] Figure 3 Structure diagram of a refrigeration system according to another embodiment of the present application;

[0021] Figure 4 Structure diagram of a refrigeration system according to another embodiment of the present application;

[0022] Figure 5 Structure diagram of a compressor in the refrigeration system shown in Figure 3 and Figure 4 Structure diagram of a compressor in the refrigeration system shown in

[0023] Figure 6 Structure diagram of a compressor in the refrigeration system shown in Figure 5 Structure diagram of a compressor in the refrigeration system shown in

[0024] The various reference signs in the drawings represent the following:

[0025] 10. Refrigeration system;

[0026] 1. Refrigeration assembly; 11. Compressor; 110. Outer shell; 110a. Upper shell; 110b. Lower shell; 111. Suction pipe; 112. Discharge pipe; 113. Process pipe; 114. High-pressure chamber; 115. Inner cavity; 116. Silencer; 117. Cylinder; 118. Suction port;

[0027] 12. Condenser; 13. Evaporator; 14. First throttling element; 15. Second throttling element; 16. Filter;

[0028] 2. Anti-condensation pipe; 21. First through port; 22. Second through port; 23. Third through port;

[0029] 3. Refrigeration cycle circuit; 30. Main pipe; 31. First branch; 32. Second branch; 33. Third branch;

[0030] 4a. First valve body; 41. First inlet; 42. Second inlet; 43. First outlet; 44. Second outlet; 45. Third outlet; 4b. Second valve body; 4c. Third valve body;

[0031] 5. Fourth valve body; 51. Third inlet; 52. Fourth outlet; 53. Fifth outlet;

[0032] 6. Heater. DETAILED DESCRIPTION

[0033] Exemplary embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present application are described herein, the present application can be embodied in various forms without being limited to the example embodiments set forth herein. Rather, these example embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0034] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are to be construed to be inclusive (i.e., to include both instances of open ended terms and instances of terms limiting to a specific number) unless otherwise indicated as otherwise limited by context. The methods described herein can be implemented by one or more computer programs or software modules that operate to perform the methods.

[0035] Although the terms first, second, third, and the like can be used herein to describe various 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 be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0036] For the convenience of description, spatial relative terms can be used herein to describe the relationship of one element or feature to another element or feature as shown in the drawings, such as "inner", "outer", "inside", "outside", "lower", "below", "upper", "above", and the like. Such spatial relative terms are intended to encompass 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, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0037] Figure 1 Structure schematic diagram of the refrigeration system of an embodiment of the present application.

[0038] Referring to Figure 1 The embodiment of the present application provides a refrigeration system 10, comprising a refrigeration assembly 1, an anti-condensation pipe 2, a refrigeration cycle circuit 3 and a valve group.

[0039] The refrigeration assembly 1 comprises a compressor 11, a condenser 12, a first throttling element 14, a second throttling element 15 and an evaporator 13, the refrigeration cycle circuit 3 comprises a main pipe 30, a first branch pipe 31 and a second branch pipe 32, the compressor 11, the condenser 12, the first throttling element 14 and the evaporator 13 are sequentially arranged in the main pipe 30, the first branch pipe 31 is arranged in parallel with the condenser 12, the second throttling element 15 is arranged in the second branch pipe 32, and the second throttling element 15 is arranged in parallel with the first throttling element 14, the anti-condensation pipe 2 is arranged in the second branch pipe 32 and connected with the inlet of the second throttling element 15. The first throttling element 14 and the second throttling element 15 can be, for example but not limited to, capillary tubes, and the first throttling element 14 and the second throttling element 15 can respectively hinder, throttle and depressurize the refrigerant flowing therethrough, so as to improve the heat exchange efficiency of the evaporator 13.

[0040] The valve group is arranged in the refrigeration cycle circuit 3, and the valve group is configured to conduct the outlet of the condenser 12 with the second branch pipe 32, or simultaneously and selectively conduct the first branch pipe 31 with the second branch pipe 32, so as to remove the condensation of the anti-condensation pipe 2.

[0041] Optionally, the refrigeration system 10 of the embodiment of the present application further comprises a sensor assembly and a controller, the sensor assembly is used for monitoring the ambient temperature and the ambient relative humidity, and the controller is respectively electrically connected with the sensor assembly and the valve group.

[0042] When the sensor assembly monitors that the ambient temperature of the refrigeration equipment is greater than the first temperature threshold, and the ambient relative humidity is greater than the first humidity threshold, for example, the ambient temperature is 40℃, and the first humidity threshold is 60%, the surrounding environment is relatively harsh, and the condensation problem of the door frame and door seal of the refrigeration equipment is more serious. In order to more efficiently remove condensation, the controller can control the valve group to conduct the first branch 31 and the second branch 32 and run for a second time duration t2, so that the high-temperature refrigerant discharged from the compressor 11 flows through the first branch 31 and the second branch 32 in turn, and the anti-condensation pipe 2 on the second branch 32 is dehumidified. Because the exhaust heat of the compressor 11 is large, most of the condensation can be quickly removed by using the exhaust heat of the compressor 11, the second time duration t2 is short, for example, 10s, the dehumidification time is shortened, the dehumidification effect is more significant, and the system power consumption is reduced. Because the ambient temperature and the ambient relative humidity are reduced after removing most of the condensation, the controller also controls the valve group to conduct the outlet of the condenser 12 and the second branch 32 and run for a first time duration t1, and t2

[0043] When the sensor assembly monitors that the ambient temperature of the refrigeration equipment is greater than the second temperature threshold, and the ambient relative humidity is greater than the second humidity threshold, wherein the second temperature threshold is less than the first temperature threshold, and the second humidity threshold is less than the first humidity threshold, for example, the second temperature threshold is 25℃, and the second humidity threshold is 40%, the condensation problem of the door frame and door seal of the refrigeration equipment is relatively small, and the controller can control the valve group to only conduct the outlet of the condenser 12 and the second branch 32, so that the refrigerant discharged from the compressor 11 flows through the condenser 12 and the second branch 32 in turn, and the anti-condensation pipe 2 is normally dehumidified.

[0044] According to the refrigeration system 10 provided in the embodiment of this application, a valve group is provided in the refrigeration cycle loop 3. The compressor 11, condenser 12, first throttling element 14 and evaporator 13 are sequentially arranged in the main pipeline 30. The first branch 31 is arranged in parallel with the condenser 12. The second throttling element 15 is arranged in the second branch 32 and is arranged in parallel with the first throttling element 14. The anti-condensation pipe 2 is arranged in the second branch 32 and is connected to the inlet of the second throttling element 15. When the ambient temperature and relative humidity are high, condensation is more severe. The valve assembly is configured to connect the outlet of condenser 12 to the second branch 32, or selectively connect the first branch 31 to the second branch 32 simultaneously, to decondensate the anti-condensation pipe 2. This allows the compressor's exhaust heat to quickly remove most of the condensation, shortening the decondensation time and making the decondensation effect more significant. When the ambient temperature and relative humidity are relatively low, the valve assembly can connect only the outlet of condenser 12 to the second branch 32 to perform normal decondensation on the anti-condensation pipe 2. This allows different decondensation methods to be selected according to the severity of condensation, shortening the decondensation time, improving the anti-condensation effect, and reducing system power consumption.

[0045] In some embodiments, the valve assembly includes a first valve body 4a and a second valve body 4b. The first valve body 4a includes a first inlet 41, a second inlet 42, a first outlet 43, and a second outlet 44. The first inlet 41 is connected to the first branch 31, the second inlet 42 is connected to the outlet of the condenser 12, the first outlet 43 is connected to the inlet of the first throttling element 14, and the second outlet 44 is connected to the inlet of the anti-condensation pipe 2. The second valve body 4b is disposed on the first branch 31 and is used to control the on / off state of the first branch 31.

[0046] like Figure 1 As shown, the first valve body 4a is a two-inlet, two-outlet solenoid valve, and the second valve body 4b is a one-inlet, one-outlet solenoid valve. When the condensation problem at the door frame and door seal of the refrigeration equipment is severe, the second valve body 4b opens the first branch 31, and the first inlet 41 and second outlet 44 of the first valve body 4a are connected and run for a second duration t2, using the exhaust heat of the compressor 11 to quickly remove most of the condensation. At the same time, the second inlet 42 and second outlet 44 are connected and run for a first duration t1 to remove the remaining small amount of condensation. When the condensation problem at the door frame and door seal of the refrigeration equipment is relatively minor, only the second inlet 42 and second outlet 44 can be opened for normal decondensation, while the second valve body 4b disconnects the first branch 31.

[0047] When there is no condensation at the door frame and door seal of the refrigeration equipment, the second valve body 4b disconnects the first branch 31, and the first valve body 4a connects the second inlet 42 and the first outlet 43 to short-circuit the anti-condensation pipe 2. The refrigerant discharged from the compressor 11 flows sequentially through the condenser 12, the first throttling element 14 and the evaporator 13, and returns to the compressor 11, and the refrigeration system 10 performs normal refrigeration.

[0048] Figure 2 This is a schematic diagram of the structure of a refrigeration system according to another embodiment of this application.

[0049] In some embodiments, the valve assembly includes a first valve body 4a and a second valve body 4b. The first valve body 4a includes a second inlet 42, a first outlet 43 and a second outlet 44. The second inlet 42 is connected to the outlet of the condenser 12, the first outlet 43 is connected to the inlet of the first throttling element 14, and the second outlet 44 is connected to the inlet of the anti-condensation pipe 2. A first branch 31 is connected between the exhaust end of the compressor 11 and the inlet of the anti-condensation pipe 2. The second valve body 4b is disposed on the first branch 31 and is used to control the on / off state of the first branch 31.

[0050] like Figure 2 As shown, the refrigeration system 10 in this embodiment and Figure 1 The structure of the refrigeration system 10 is similar, except that the first valve body 4a and the first branch 31 are different.

[0051] Specifically, the first valve body 4a is a solenoid valve with one inlet and two outlets, and the second valve body 4b is a solenoid valve with one inlet and one outlet. The first branch 31 is connected between the discharge end of the compressor 11 and the inlet of the anti-condensation pipe 2. When the condensation problem at the door frame and door seal of the refrigeration equipment is severe, the second valve body 4b opens the first branch 31 and runs for a second duration t2, using the exhaust heat of the compressor 11 to quickly remove most of the condensation. At the same time, the second inlet 42 and the second outlet 44 of the first valve body 4a are opened and run for a first duration t1 to remove the remaining small amount of condensation. When the condensation problem at the door frame and door seal of the refrigeration equipment is relatively minor, only the second inlet 42 and the second outlet 44 of the first valve body 4a can be opened for normal decondensation, while the second valve body 4b disconnects the first branch 31.

[0052] When there is no condensation at the door frame and door seal of the refrigeration equipment, the second valve body 4b disconnects the first branch 31, and the first valve body 4a connects the second inlet 42 and the first outlet 43 to short-circuit the anti-condensation pipe 2. The refrigerant discharged from the compressor 11 flows sequentially through the condenser 12, the first throttling element 14 and the evaporator 13, and returns to the compressor 11, and the refrigeration system 10 performs normal refrigeration.

[0053] Figure 3 This is a schematic diagram of the structure of a refrigeration system according to another embodiment of this application.

[0054] In some embodiments, the refrigeration cycle loop 3 further includes a third branch 33, which is connected in parallel with the second branch 32; the valve assembly is also configured to selectively conduct the first branch 31 and the third branch 33 to defrost the evaporator 13.

[0055] like Figure 3As shown, the refrigeration system 10 in this embodiment and Figure 1 and Figure 2 The structure of the refrigeration system 10 is similar, except that the refrigeration cycle loop 3 also includes a third branch 33 for defrosting the evaporator 13.

[0056] Specifically, the third branch 33 is connected in parallel with the second branch 32, and the valve group is also configured to selectively conduct the first branch 31 and the third branch 33. In this way, the high-temperature and high-pressure refrigerant discharged from the compressor 11 can flow through the first branch 31 and the third branch 33 to directly defrost the surface of the evaporator 13.

[0057] In some embodiments, the first valve body 4a further includes a third outlet 45, which is connected to a third branch 33.

[0058] like Figure 3 As shown, the first valve body 4a is a two-inlet, three-outlet solenoid valve, including a first inlet 41, a second inlet 42, a first outlet 43, a second outlet 44, and a third outlet 45. The first inlet 41 is connected to the first branch 31, the second inlet 42 is connected to the outlet of the condenser 12, the first outlet 43 is connected to the inlet of the evaporator 13, the second outlet 44 is connected to the second branch 32, and the third outlet 45 is connected to the third branch 33. When the sensor assembly detects that the surface temperature of the evaporator 13 is low or the cumulative cooling time exceeds a preset duration, the surface of the evaporator 13 may frost and require defrosting. The controller can control the first valve body 4a to open the first inlet 41 and the third outlet 45, and control the second valve body 4b to open the first branch 31. The refrigerant discharged from the compressor 11 flows through the first branch 31 and the third branch 33 and directly vents and defrosts the evaporator 13. Therefore, the first valve body 4a can enhance the flexibility of the refrigeration system 10, allowing the refrigeration system 10 to switch between multiple modes such as refrigeration, defrosting and anti-condensation, in order to adapt to different operating conditions.

[0059] Figure 4 This is a schematic diagram of the structure of a refrigeration system according to another embodiment of this application.

[0060] In some embodiments, the refrigeration cycle loop 3 further includes a third branch 33, which is connected between the first branch 31 and the inlet of the evaporator 13; the valve group further includes a third valve body 4c, which is disposed in the third branch 33.

[0061] like Figure 4 As shown, the refrigeration system 10 in this embodiment and Figure 3 The structure of the refrigeration system 10 is similar, except that the first valve body 4a and the first branch 31 are different.

[0062] Specifically, the first valve body 4a is a two-way electromagnetic valve, the first branch 31 is connected between the exhaust end of the compressor 11 and the inlet of the anti-condensation pipe 2, the second valve body 4b is a one-way electromagnetic valve, the second valve body 4b is arranged on the first branch 31, and the third valve body 4c is a one-way electromagnetic valve, the third valve body 4c is arranged on the third branch 33. When the sensor assembly detects that the surface temperature of the evaporator 13 is low or the cumulative refrigeration time exceeds the preset time length, the surface of the evaporator 13 may be frosted and defrosting is needed, the controller can control the first valve body 4a to close the second inlet 42, the first outlet 43 and the second outlet 44, control the second valve body 4b to conduct the first branch 31, and control the third valve body 4c to conduct the third branch 33, so that the refrigerant discharged from the compressor 11 flows through the first branch 31, the third branch 33 and the evaporator 13 in turn, and the evaporator 13 is defrosted by exhaust. Therefore, the valve group can enhance the flexibility of the refrigeration system 10, allowing the refrigeration system 10 to switch between refrigeration, defrosting and anti-condensation and other modes to adapt to different operating conditions.

[0063] It can be understood that in other embodiments, the second valve body 4b and the third valve body 4c can be integrated into a two-way electromagnetic valve, the inlet of which is connected with the exhaust end of the compressor 11, one outlet is connected with the first branch, and the other outlet is connected with the third branch 33. By controlling the inlet and one outlet to be conductive, the refrigeration system 10 can perform condensation removal operation, and by controlling the inlet and the other outlet to be conductive, the refrigeration system 10 can perform defrosting operation.

[0064] Figure 5 For Figure 3 and Figure 4 The structure diagram of the compressor in the refrigeration system shown in

[0065] In some embodiments, the compressor 11 includes a shell 110 having an inner cavity 115, and a muffler 116, a cylinder 117 and a high-pressure cabin 114 arranged in the inner cavity 115, the shell 110 is provided with back gas pipes 111, exhaust pipes 112 and process pipes 113 which are distributed at intervals, the back gas pipes 111 are in communication with the cavity of the muffler 116, the exhaust pipes 112 are in communication with the high-pressure cabin 114, and the process pipes 113 are in communication with the inner cavity 115; the refrigeration system 10 further includes a fourth valve body 5, the fourth valve body 5 includes a third inlet 51, a fourth outlet 52 and a fifth outlet 53, the third inlet 51 is connected with the outlet of the evaporator 13, the fourth outlet 52 is connected with the back gas pipes 111, and the fifth outlet 53 is connected with the process pipes 113, the fourth valve body 5 is configured to conduct the third inlet 51 and the fifth outlet 53, so that the defrosted refrigerant flows through the process pipes 113 into the inner cavity 115 of the compressor 11, and preheats the refrigerant.

[0066] As Figure 3 and Figure 5As shown, in this embodiment, the compressor 11 serves as the heart of the refrigeration system 10, and its main function is to compress the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. The compressor 11 can be a reciprocating compressor, which includes a silencer 116, a cylinder 117, and a high-pressure chamber 114, all housed within the inner cavity 115 of the outer casing 110. The silencer 116 reduces the aerodynamic noise generated by the gas entering the compressor 11. The cylinder 117 contains a chamber, a piston, intake valve, exhaust valve, crankshaft components, etc. Mechanical energy is converted into heat energy through the mechanical work of the piston, thereby compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, which is then delivered to the high-pressure chamber 114. The high-pressure chamber 114 reduces the aerodynamic noise generated by the compressed gas. In refrigeration cycle mode, the discharge pipe 112 of compressor 11 is used to discharge the compressed, high-temperature, high-pressure gaseous refrigerant from compressor 11; the return pipe 111 is used to return the refrigerant from evaporator 13 to compressor 11; the process pipe 113 is generally used for the commissioning and maintenance of refrigeration system 10, such as charging refrigerant into cavity 115, evacuating, or checking system pressure. In defrost cycle mode, the functions of process pipe 113 and return pipe 111 can be reversed, that is, the low-temperature refrigerant from evaporator 13 flows back to cavity 115 of compressor 11 through process pipe 113, while return pipe 111 is used for the commissioning and maintenance of refrigeration system 10, such as charging refrigerant into cavity 115, evacuating, or checking system pressure.

[0067] In this embodiment, when the refrigeration system 10 enters the defrost cycle mode, the fourth valve body 5 opens the third inlet 51 and the fifth outlet 53, so that the high-temperature refrigerant discharged from the exhaust pipe 112 of the compressor 11 defrosts the evaporator 13. The defrosted refrigerant then enters the inner cavity 115 of the compressor 11 through the process pipe 113. Since the compressor 11 converts mechanical energy into heat energy by performing work during the process of compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, the inner cavity 115 of the compressor 11 has a high heat level. The residual heat of the inner cavity 115 of the compressor 11 can be used to preheat the refrigerant. The heated refrigerant enters the chamber of the muffler 116, which helps maintain a uniform temperature distribution inside the compressor 11 and reduces the risk of local overheating. During the preheating process, the liquid refrigerant can also be completely evaporated into gaseous refrigerant, thereby reducing the possibility of liquid slugging in the compressor 11 and improving the service life of the compressor 11.

[0068] In some embodiments, the housing 110 includes a lower housing 110b and an upper housing 110a covering the lower housing 110b. A return pipe 111, an exhaust pipe 112, and a process pipe 113 are respectively disposed in the lower housing 110b, and the return pipe 111 and the exhaust pipe 112 are disposed adjacent to each other.

[0069] like Figure 3As shown, the return gas pipe 111, the exhaust pipe 112 and the process pipe 113 are arranged on the lower shell 110b, facilitating assembly and disassembly of the compressor 11. The return gas pipe 111 is generally used to connect the evaporator 13, and the exhaust pipe 112 is generally used to connect the condenser 12. The return gas pipe 111 and the exhaust pipe 112 are arranged adjacent to each other on the lower shell 110b, so that the pipes can be arranged on the same side, reducing the occupied space of the pipes. Optionally, the return gas pipe 111, the exhaust pipe 112 and the process pipe 113 can all be copper pipes, which have good heat conductivity and are corrosion resistant.

[0070] Figure 5 For Figure 4 A structural schematic diagram of the compressor omitting the upper shell is shown.

[0071] In some embodiments, the silencer 116 is provided with an air inlet 118, the high-pressure chamber 114 is provided with an exhaust port, one end of the return gas pipe 111 extending into the inner cavity 115 is arranged opposite to and spaced apart from the air inlet 118, one end of the exhaust pipe 112 extending into the inner cavity 115 is connected to the exhaust port through a pipe, and one end of the process pipe 113 extending into the inner cavity 115 is spaced apart from the air inlet 118 by a preset distance.

[0072] As Figure 4 shown, the compressor 11 in the present embodiment is a piston compressor, which includes the silencer 116 and the cylinder 117 arranged in the shell 110. The cylinder 117 is in communication with the high-pressure chamber 114, and the cylinder 117 is provided with a piston, a crankshaft and other components. The mechanical work of the piston converts mechanical energy into heat energy, so as to compress the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant. The silencer 116 is used to reduce the aerodynamic noise generated by the gas entering the compressor 11. In the defrosting cycle mode, since one end of the process pipe 113 extending into the inner cavity 115 is spaced apart from the air inlet 118 by a preset distance, the refrigerant entering the inner cavity 115 of the compressor 11 from the process pipe 113 flows in two streams in the inner cavity 115. After heat exchange between the refrigerant and the residual heat of the inner cavity 115, the two streams converge at the air inlet 118 and enter the chamber of the silencer 116, and then enter the cylinder 117 through the suction valve plate to be compressed by the piston. The compressed gaseous refrigerant enters the high-pressure chamber 114 through the exhaust valve plate, and then is discharged from the exhaust pipe 112 through the exhaust port, for the next defrosting cycle.

[0073] In some embodiments, the refrigeration system 10 further includes a heater 6 arranged on the process pipe 113.

[0074] As Figure 2As shown, when the temperature of the refrigerant in the process tube 113 is low, condensation and frost may form on the inner surface of the compressor casing 110, causing liquid refrigerant to mix with the gaseous refrigerant, which may lead to liquid slugging in the compressor 11. Therefore, in this embodiment, a heater 6 is provided on the process tube 113 to assist in heating the refrigerant within the process tube 113. The sensor assembly can also be used to detect the temperature of the refrigerant flowing into the process tube 113. The controller can activate the heater 6 if the refrigerant temperature is below a temperature threshold. The temperature threshold can be, for example, the condensation temperature, generally above 0°C, depending on the specific application environment. By providing additional heat through the heater 6, the temperature of the refrigerant is ensured not to be too low before returning to the inner cavity 115 of the compressor 11, preventing condensation and frost on the surface of the compressor 11. This helps maintain the gaseous state of the refrigerant, prevents liquid slugging caused by the liquefaction of gaseous refrigerant, and ensures the safe and stable operation of the compressor 11.

[0075] In some embodiments, the refrigeration assembly 1 further includes a filter 16, which is disposed in the main pipeline 30 and located between the condenser 12 and the first valve body 4. Optionally, the filter 16 is a dryer filter, which can filter impurities in the refrigerant before it enters the first valve body 4, and dry the low-temperature, low-pressure refrigerant after it flows through the condenser 12, thereby improving the evaporation efficiency of the evaporator 13 and further reducing the possibility of liquid slugging caused by the liquefaction of gaseous refrigerant.

[0076] In some embodiments, the first valve body 4a is further configured to open the second inlet 42 and the first outlet 43, and the fourth valve body 5 is configured to open the third inlet 51 and the fourth outlet 52. The refrigerant discharged from the compressor 11 flows sequentially through the condenser 12, the first throttling element 14 and the evaporator 13, and then returns to the return pipe 111 of the compressor 11.

[0077] like Figure 2 As shown, after receiving a refrigeration command, the controller controls the first valve body 4a to open the second inlet 42 and the first outlet 43, and the fourth valve body 5 to open the third inlet 51 and the fourth outlet 52, so that the refrigeration system 10 enters the refrigeration cycle mode. The high-temperature refrigerant discharged from the exhaust pipe 112 of the compressor 11 flows sequentially through the condenser 12, the first throttling element 14 and the evaporator 13, and then flows back to the return pipe 111 of the compressor 11. The return pipe 111 is opposite to and spaced apart from the intake port 118 of the muffler, so that the return refrigerant can be directly drawn into the chamber of the muffler 116, and then enter the cylinder 117 to be compressed by the piston. The compressed gaseous refrigerant enters the high-pressure chamber 114, which is connected to the exhaust pipe 112 through the exhaust port. The compressed refrigerant is discharged from the exhaust pipe 112 to start the next refrigeration cycle.

[0078] In addition, the present application provides a refrigeration device comprising the refrigeration system 10 of the embodiments of the present application. The refrigeration device can be, for example but not limited to, a refrigerator, a freezer, a cold storage, etc.

[0079] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the scope of protection of the claims.

Claims

1. A refrigeration system characterized by, The application relates to a refrigeration system. The refrigeration system comprises a refrigeration assembly, a refrigeration cycle circuit, an anti-condensation pipe and a valve group. The refrigeration assembly comprises a compressor, a condenser, a first throttling element, a second throttling element and an evaporator. The refrigeration cycle circuit comprises a main pipeline, a first branch pipeline and a second branch pipeline. The compressor, the condenser, the first throttling element and the evaporator are sequentially arranged in the main pipeline. The first branch pipeline is arranged in parallel with the condenser.

2. The refrigeration system of claim 1, wherein, The second throttling element is arranged in the second branch pipeline. The second throttling element is arranged in parallel with the first throttling element.

3. The refrigeration system of claim 1, wherein, The anti-condensation pipe is arranged in the second branch pipeline and is connected with the inlet of the second throttling element. The valve group is arranged in the refrigeration cycle circuit.

4. The refrigeration system of claim 2 or 3, wherein, The valve group is configured to guide the outlet of the condenser to the second branch pipeline or to selectively guide the first branch pipeline and the second branch pipeline to defrost the anti-condensation pipe. The valve group comprises a first valve body and a second valve body.

5. The refrigeration system of claim 4, wherein, The first valve body comprises a first inlet, a second inlet, a first outlet and a second outlet.

6. The refrigeration system of claim 4 wherein, The first inlet is connected with the first branch pipeline. The second inlet is connected with the outlet of the condenser.

7. The refrigeration system of claim 1, wherein, The first outlet is communicated with the inlet of the first throttling element. The second outlet is connected with the inlet of the anti-condensation pipe. The second valve body is arranged on the first branch pipeline and is used for controlling the on-off of the first branch pipeline. The valve group comprises a first valve body and a second valve body. The first valve body comprises a second inlet, a first outlet and a second outlet. The second inlet is connected with the outlet of the condenser. The first outlet is communicated with the inlet of the first throttling element. The second outlet is connected with the inlet of the anti-condensation pipe. The first branch pipeline is connected between the exhaust end of the compressor and the inlet of the anti-condensation pipe. The second valve body is arranged on the first branch pipeline and is used for controlling the on-off of the first branch pipeline. The refrigeration cycle circuit further comprises a third branch pipeline. The third branch pipeline is arranged in parallel with the second branch pipeline. The valve group is further configured to selectively guide the first branch pipeline and the third branch pipeline to defrost the evaporator. The first valve body further comprises a third outlet. The third outlet is communicated with the third branch pipeline. The refrigeration cycle circuit further comprises a third branch pipeline. The third branch pipeline is connected between the first branch pipeline and the inlet of the evaporator. The valve group further comprises a third valve body. The third valve body is arranged on the third branch pipeline. The compressor comprises a shell with an inner cavity, a silencer, a cylinder and a high-pressure cabin chamber. The shell is provided with a plurality of back gas pipes, exhaust pipes and process pipes which are distributed at intervals. The back gas pipes are communicated with the chamber of the silencer. The exhaust pipes are communicated with the high-pressure cabin chamber. The process pipes are communicated with the inner cavity. The compressor further comprises a plurality of process pipes. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. The process pipes are arranged on the shell and are communicated with the inner cavity. 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The process pipes are arranged on the shell and The refrigeration system further comprises a fourth valve body, the fourth valve body comprising a third inlet, a fourth outlet and a fifth outlet, the third inlet being connected with the outlet of the evaporator, the fourth outlet being connected with the gas return pipe, and the fifth outlet being connected with the process pipe, the fourth valve body being configured to connect the third inlet and the fifth outlet to make the refrigerant after defrosting flow through the process pipe into the inner cavity of the compressor and preheat the refrigerant.

8. The refrigeration system of claim 7, wherein, The muffler is provided with an air inlet, the hyperbaric chamber is provided with an air outlet, one end of the gas return pipe extending into the inner cavity is arranged opposite to and spaced from the air inlet, one end of the exhaust pipe extending into the inner cavity is connected with the air outlet through a pipeline, and one end of the process pipe extending into the inner cavity is spaced from the air inlet by a preset distance.

9. The refrigeration system of claim 7, wherein, The refrigeration system further comprises a heater, the heater being arranged on the process pipe.

10. A refrigeration appliance characterized in that, A refrigeration system comprising any one of claims 1-9.

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