Cold storage device and refrigeration system

Abstract

The application provides a cold storage device and a refrigeration system, relates to the technical field of cold energy storage, and provides a cold storage device with a novel structure to facilitate cold energy storage. The cold storage device is arranged on a cold storage branch of a refrigeration system, one end of the cold storage branch is arranged between a throttling device and an evaporator of the refrigeration system, the other end is arranged between the evaporator and a compressor of the refrigeration system, the cold storage device is arranged on the cold storage branch, a control valve is arranged on the liquid inlet side of the cold storage device, the control valve can be completely opened in a valley electricity utilization stage, more low-temperature refrigerants after throttling in a normal operation process of the whole system enter the cold storage device, and cold energy storage is realized; a gaseous cold storage device is arranged on the refrigeration system, the gaseous cold storage device is arranged at the outlet end of the evaporator of the refrigeration system, the refrigerant absorbs heat in the cold storage device, and then superheated refrigerants enter the compressor to be compressed, so that the effect of the required superheat degree in the suction process of the compressor can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold energy storage, in particular to a cold storage device and a refrigeration system. BACKGROUND

[0002] In the actual engineering application of cold energy utilization, it is necessary to maintain its continuity in a specific period of time to achieve the purpose of continuous cooling supply. When it involves peak electricity use stage, a small amount of cold energy is stored through the cold storage device, while in the valley electricity use stage, the demand for cold energy is reduced, at this time, the system can continue to run in the valley electricity stage and store a large part of the cold energy for other occasions that need cold energy. SUMMARY

[0003] The present application provides a cold storage device and a refrigeration system, which provides a new structure of cold storage device to facilitate the storage of cold energy, and provides a refrigeration system that can store a large amount of cold energy through the cold storage device when the system continues to run in the valley electricity stage. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The cold storage device provided by the present application comprises a shell and a cold storage body, wherein the top of the shell is provided with a refrigerant inlet pipe, the cold storage body is arranged in the shell, and a cold carrier medium pipeline is arranged in the cold storage body, both ends of the cold carrier medium pipeline extending out of the shell; a liquid cavity is formed on the circumferential inner side of the cold storage body and the shell, a refrigerant outlet pipe is arranged on the shell, and the refrigerant outlet pipe is in communication with the liquid cavity.

[0006] Further, the cold storage body is two or more, and each cold storage body is sequentially and spacedly arranged along the height direction of the shell.

[0007] Further, the cold storage body is two or more, and the cold storage body arranged at the lowest position is a bottom cold storage body, the cold storage body arranged above the bottom cold storage body is an upper cold storage body, the upper cold storage body is a cylindrical structure with open ends, and the circumferential edge of the bottom of the upper cold storage body is connected with the inner side of the shell; the diameter of the top end of the upper cold storage body gradually decreases along the direction from top to bottom of the shell.

[0008] Preferably, the outer surface profile of the upper cold storage body is in the shape of a truncated cone, and the outer surface profile of the bottom cold storage body is in the shape of a cone.

[0009] Preferably, the cold carrier medium pipeline in the cold storage body is spirally distributed.

[0010] Preferably, the cold storage device further comprises a liquid distributor, which is arranged in the shell and connected with the refrigerant inlet pipe.

[0011] Preferably, the liquid distributor comprises straight liquid distribution pipes and arc-shaped pipes, the straight liquid distribution pipes are connected with the refrigerant inlet pipe and distributed along the circumferential direction of the refrigerant inlet pipe, the arc-shaped pipes connect two adjacent straight liquid distribution pipes, the arc-shaped pipes are distributed along the circumferential direction and multiple turns of the arc-shaped pipes are distributed along the radial direction of the straight liquid distribution pipes, and liquid outlets are arranged on the straight liquid distribution pipes and the arc-shaped pipes.

[0012] The application provides a refrigeration system, which is provided with the cold storage device, and the refrigerant inlet pipe and the refrigerant outlet pipe of the cold storage device are connected with the refrigerant pipeline of the refrigeration system.

[0013] Further, the refrigeration system comprises a cold storage branch, one end of the cold storage branch is arranged between the throttling device and the evaporator of the refrigeration system, the other end of the cold storage branch is arranged between the evaporator and the compressor of the refrigeration system, the cold storage device is arranged on the cold storage branch, a control valve and an auxiliary evaporator are arranged on the cold storage branch, the refrigerant inlet pipe of the cold storage device is connected with the control valve, and the refrigerant outlet pipe of the cold storage device is connected with the auxiliary evaporator.

[0014] Preferably, the refrigeration system further comprises a gaseous cold storage device, which is connected with the refrigerant pipeline of the refrigeration system and arranged at the outlet end of the evaporator of the refrigeration system.

[0015] Further, the gaseous cold storage device further comprises an outer shell and a cold storage body, a gas flow cavity is formed between the outer shell and the cold storage body, the gas flow cavity surrounds the cold storage body, a refrigerant inlet pipe and a refrigerant outlet pipe are arranged on the outer shell, the gas flow cavity is connected with the refrigerant inlet pipe and the refrigerant outlet pipe, a cold carrier inlet part and a cold carrier outlet part are arranged on the cold storage body, a plurality of cold carrier pipelines are arranged on the cold storage body, and the inside of the cold carrier inlet part and the cold carrier outlet part is connected with the cold carrier pipelines.

[0016] Further, the refrigerant inlet pipe and the refrigerant outlet pipe are arranged oppositely, the cold carrier inlet part and the cold carrier outlet part are arranged oppositely, and the refrigerant inlet pipe, the refrigerant outlet pipe, the cold carrier inlet part and the cold carrier outlet part are distributed along the circumferential direction of the outer shell.

[0017] The application provides a new cold storage device, which comprises a shell and a cold storage body, wherein the cold storage body is made of a cold storage material, and when refrigerant flows into the shell through a refrigerant inlet pipe, the refrigerant is sprayed on the cold storage body to reduce the temperature of the cold storage body, so that the cold energy of the refrigerant is stored on the cold storage body; the refrigerant flowing out of the refrigerant inlet pipe is finally collected in a liquid cavity between the cold storage body and the shell, and then is discharged through a refrigerant outlet pipe; the cold storage body is arranged in the shell, and a cold carrier pipeline is arranged in the cold storage body, and the cold carrier pipeline extends out of the shell at both ends; when a cold carrier flows in the cold carrier pipeline, the cold carrier can absorb and take away the cold energy on the cold storage body.

[0018] The preferred technical scheme of the application can produce at least the following technical effects:

[0019] The refrigeration system comprises a cold storage branch, one end of the cold storage branch is arranged between a throttling device and an evaporator of the refrigeration system, the other end of the cold storage branch is arranged between the evaporator and a compressor of the refrigeration system, and a cold storage device is arranged on the cold storage branch; the operation of the system can be divided into a peak electricity utilization stage and a valley electricity utilization stage; in the peak electricity utilization stage, a control valve is closed or is slightly opened under the condition of meeting the requirements, and the whole system is in a normal operation process; in the valley electricity utilization stage, the control valve is completely opened, and more throttled low-temperature refrigerant in the normal operation process of the whole system enters the cold storage device to realize storage of cold energy.

[0020] The cold storage device is arranged on the refrigeration system, the cold storage device is connected with a refrigerant pipeline of the refrigeration system, and the cold storage device is arranged at an outlet end of an evaporator of the refrigeration system; the refrigerant enters the cold storage device after completing heat absorption in the evaporator; the refrigerant absorbs heat in the cold storage device, and then superheated refrigerant enters a compressor to be compressed; the cold storage device arranged at the outlet end of the evaporator of the refrigeration system can achieve the effect of the required superheat degree in the suction process of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 FIG. 1 is a schematic diagram of a cold storage device provided by an embodiment of the application;

[0023] Figure 2 FIG. 2 is a schematic diagram of a cold storage body provided by an embodiment of the application;

[0024] Figure 3is a cross-sectional view of the cold storage body provided by the embodiment of the present application;

[0025] Figure 4 is a schematic diagram of the liquid distributor provided by the embodiment of the present application;

[0026] Figure 5 is a cross-sectional view of the gaseous cold storage device provided by the embodiment of the present application;

[0027] Figure 6 is a cross-sectional view of the gaseous cold storage device provided by the embodiment of the present application;

[0028] Figure 7 is a line connection diagram of the refrigeration system provided by the embodiment of the present application.

[0029] 1 - shell; 101 - refrigerant inlet pipe; 102 - refrigerant outlet pipe; 2 - cold storage body; 201 - cold carrier medium pipe; 2011 - cold carrier medium inlet; 2012 - cold carrier medium outlet; 3 - liquid distributor; 301 - straight liquid distribution pipe; 302 - arc-shaped pipe; 4 - throttling device; 5 - evaporator; 6 - compressor; 7 - control valve; 8 - gaseous cold storage device; 801 - outer shell; 8011 - refrigerant inlet pipe; 8012 - refrigerant outlet pipe; 802 - cold storage body; 8021 - cold carrier pipe; 803 - cold carrier inlet; 804 - cold carrier outlet; 9 - auxiliary evaporator; 10 - one-way valve; 11 - three-way valve; 12 - condenser. DETAILED DESCRIPTION

[0030] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0031] Embodiment 1:

[0032] Reference Figure 1The application provides a cold storage device, which comprises a shell 1 and a cold storage body 2 made of a cold storage material, wherein the top of the shell 1 is provided with a refrigerant inlet pipe 101, the cold storage body 2 is arranged in the shell 1, and a cold carrier medium pipe 201 is arranged in the cold storage body 2, and the two ends of the cold carrier medium pipe 201 respectively extend out of the shell 1; a liquid cavity is formed between the circumferential inner side of the cold storage body 2 and the shell 1, and a refrigerant outlet pipe 102 is arranged on the shell 1 and is communicated with the liquid cavity. When the refrigerant flows in through the refrigerant inlet pipe 101, the refrigerant is sprayed on the cold storage body 2, so that the temperature of the cold storage body 2 is lowered and the cold energy of the refrigerant is stored in the cold storage body 2. The refrigerant flowing out of the refrigerant inlet pipe 101 is finally collected in the liquid cavity between the cold storage body 2 and the shell 1 and is discharged through the refrigerant outlet pipe 102. When the cold carrier medium flows in the cold carrier medium pipe 201, the cold carrier medium can absorb and take away the cold energy on the cold storage body 2.

[0033] The cold storage body 2 is two or more, and each cold storage body 2 is sequentially distributed along the height direction of the shell 1, and a liquid cavity is formed between each cold storage body 2 and the inner side of the shell 1. The inlet end of the cold carrier medium pipe 201 on each cold storage body 2 is connected through a flow divider, and the outlet end of the cold carrier medium pipe 201 on each cold storage body 2 is connected through a flow collector, so that the cold carrier medium flows to the cold carrier medium pipe 201 on each cold storage body 2 after being divided by the flow divider, and the cold carrier medium flows through the cold carrier medium pipe 201 on each cold storage body 2 and is then collected by the flow collector. In addition, by arranging two or more cold storage bodies in the shell 1, the storage of the cold energy of the refrigerant can be improved.

[0034] When the cold storage body 2 is two or more, the lowermost cold storage body 2 is defined as a bottom cold storage body, and the cold storage body 2 above the bottom cold storage body is defined as an upper cold storage body. The upper cold storage body is a cylindrical structure with two open ends, and the circumferential edge of the bottom of the upper cold storage body is connected with the inner side of the shell 1. Referring to Figure 1 , it is shown that three cold storage bodies 2 are arranged in the shell 1, and the two upper cold storage bodies 2 are upper cold storage bodies. In order to better realize the cold energy storage of each cold storage body 2, the diameter of the top end of the upper cold storage body is gradually reduced along the direction from top to bottom of the shell 1, so that the refrigerant sprayed from the top of the shell 1 can flow to each cold storage body 2.

[0035] Referring to Figure 1 , the shape of each cold storage body 2 is specifically shown. The outer surface profile of the upper cold storage body is in the shape of a circular truncated cone, and the outer surface profile of the bottom cold storage body 2 is in the shape of a circular cone.

[0036] Regarding the distribution of the cold carrier medium pipe 201 in the cold storage body 2, the following is preferred: the cold carrier medium pipe 201 in the cold storage body 2 is spirally distributed, so as to better realize the heat exchange between the cold carrier medium in the cold carrier medium pipe 201 and the cold storage body 2. Referring to Figure 3Fig. 2 is a sectional view of the cold storage body 2, showing the distribution of the cold carrier pipe 201 in the cold storage body 2.

[0037] The cold storage device further comprises a liquid distributor 3 arranged in the shell 1 and connected with the refrigerant inlet pipe 101, and the refrigerant in the refrigerant inlet pipe 101 is sprayed into the shell 1 through the liquid outlet of the liquid distributor 3. By arranging the liquid distributor 3, the refrigerant can be uniformly sprayed into the cold storage body 2 in the shell 1. As to the liquid distributor 3, the structure is preferably as follows: referring to Figure 4 , the liquid distributor 3 comprises liquid distribution straight pipes 301 and arc pipes 302, the liquid distribution straight pipes 301 are connected with the refrigerant inlet pipe 101 and distributed along the circumferential direction of the refrigerant inlet pipe 101, referring to Figure 1 , the center position of each liquid distribution straight pipe 301 is connected with the refrigerant inlet pipe 101, the arc pipe 302 connects two adjacent liquid distribution straight pipes 301 and communicates with the two connected liquid distribution straight pipes 301, the arc pipes 302 are distributed along the circumferential direction and multiple circles of the arc pipes 302 are distributed along the radial direction of the liquid distribution straight pipes 301, and the liquid outlet is arranged on the liquid distribution straight pipes 301 and the arc pipes 302. By the above structure of the liquid distributor 3, the refrigerant can be uniformly sprayed into the cold storage body 2 in the shell 1.

[0038] Embodiment 2:

[0039] Referring to Figures 5-6 , the present application provides a gaseous cold storage device, which comprises an outer shell 801 and a cold storage body 802, the cold storage body 802 is made of cold storage material, a gas flow cavity is formed between the outer shell 801 and the cold storage body 802, the gas flow cavity surrounds the cold storage body 802, the outer shell 801 is provided with a refrigerant inlet pipe 8011 and a refrigerant outlet pipe 8012, the gas flow cavity communicates with the refrigerant inlet pipe 8011 and the refrigerant outlet pipe 8012, the refrigerant enters through the refrigerant inlet pipe 8011, is discharged from the refrigerant outlet pipe 8012 after passing through the gas flow cavity, the cold storage body 802 can store the cold energy of the refrigerant flowing in the gas flow cavity, the cold storage body 802 is provided with a cold carrier inlet part and a cold carrier outlet part, the cold storage body 802 is provided with a plurality of cold carrier pipes 8021, the inside of the cold carrier inlet part and the cold carrier outlet part communicates with the cold carrier pipes 8021. The cold carrier inlet part and the cold carrier outlet part are respectively provided with a cold carrier inlet 803 and a cold carrier outlet 804, the cold carrier enters the cold carrier pipes 8021 through the cold carrier inlet 803, absorbs and carries away the cold energy on the cold storage body 802, and is discharged through the cold carrier outlet 804.

[0040] Specifically, the refrigerant inlet pipe 8011 and the refrigerant outlet pipe 8012 are arranged oppositely, the cold carrier inlet component and the cold carrier outlet component are arranged oppositely, and the refrigerant inlet pipe 8011, the refrigerant outlet pipe 8012, the cold carrier inlet component, and the cold carrier outlet component are distributed along the circumferential direction of the outer shell 801. Referring to Figure 5 and Figure 6 , the positional relationship of the refrigerant inlet pipe 8011, the refrigerant outlet pipe 8012, the cold carrier inlet component, and the cold carrier outlet component along the outer shell 801 is schematically shown.

[0041] Embodiment 3:

[0042] A refrigeration system is provided with a cold storage device, which can be the cold storage device described in Embodiment 1 or other cold storage devices of other structures in the prior art, and the refrigerant inlet pipe and the refrigerant outlet pipe of the cold storage device are connected with the refrigerant pipeline of the refrigeration system.

[0043] Specifically, the refrigeration system includes a cold storage branch, one end of the cold storage branch is arranged between the throttling device 4 and the evaporator 5 of the refrigeration system, and the other end is arranged between the evaporator 5 and the compressor 6 of the refrigeration system, the cold storage device is arranged on the cold storage branch, the control valve 7 and the auxiliary evaporator 9 are arranged on the cold storage branch, the refrigerant inlet pipe 101 of the cold storage device is connected with the control valve 7, and the refrigerant outlet pipe 102 of the cold storage device is connected with the auxiliary evaporator 9.

[0044] The operation of the system can be divided into a peak electricity utilization stage and a valley electricity utilization stage. In the peak electricity utilization stage, the control valve 7 is closed or slightly opened under the condition of meeting the requirements, and in the normal operation process of the entire system, when the control valve 7 is slightly opened, part of the refrigerant discharged from the throttling device 4 flows to the cold storage device through the control valve 7, and the refrigerant discharged from the cold storage device flows to the compressor 6 through the auxiliary evaporator 9 and the one-way valve 10.

[0045] In the valley electricity utilization stage, the control valve 7 can be completely opened, and more throttled low-temperature refrigerant enters the cold storage device in the normal operation process of the entire system. If the cold storage device is the cold storage device described in Embodiment 1 of the present application, the low-temperature refrigerant will flow to the refrigerant inlet pipe 101 and be sprayed downward through the liquid outlet holes of the liquid distributor 3, and the outer surfaces of the three cold storage bodies 2 in the shell 1 are sprayed respectively, so that the cold energy of the low-temperature working medium is stored in the cold storage bodies 2 respectively and used for exchanging and transferring with the cold carrier working medium in the cold carrier pipeline 201.

[0046] Embodiment 4:

[0047] A refrigeration system, the refrigeration system is provided with a cold storage device, the cold storage device can be the gaseous cold storage device 8 described in embodiment 2, or can not be the cold storage device described in embodiment 2, but other structures of the cold storage device in the prior art, the cold storage device is connected with the refrigerant pipeline of the refrigeration system and the cold storage device is arranged at the outlet end of the evaporator 5 of the refrigeration system.

[0048] Referring to Figure 7 , a refrigeration system is schematically shown. When the cold storage device is the gaseous cold storage device 8 described in embodiment 2, the refrigerant enters the gaseous cold storage device 8 after completing heat absorption in the evaporator 5, the refrigerant absorbs the heat of the cold storage body 802 in the gaseous cold storage device 8, and then the superheated refrigerant enters the compressor 6 for compression, and by arranging the cold storage device at the outlet end of the evaporator 5 of the refrigeration system, the effect of the required superheat degree in the suction process of the compressor can be achieved.

[0049] Embodiment 5:

[0050] A refrigeration system, the refrigeration system is provided with the cold storage device described in embodiment 1, and the refrigerant inlet pipe 101 and the refrigerant outlet pipe 102 of the cold storage device are connected with the refrigerant pipeline of the refrigeration system. Specifically, the refrigeration system comprises a cold storage branch, one end of the cold storage branch is arranged between the throttling device 4 and the evaporator 5 of the refrigeration system, the other end is arranged between the evaporator 5 and the compressor 6 of the refrigeration system, the cold storage device is arranged on the cold storage branch, the control valve 7 and the auxiliary evaporator 9 are arranged on the cold storage branch, the refrigerant inlet pipe 101 of the cold storage device is connected with the control valve 7, and the refrigerant outlet pipe 102 of the cold storage device is connected with the auxiliary evaporator 9.

[0051] The operation of the system can be divided into peak electricity utilization stage and valley electricity utilization stage, the control valve 7 is closed or slightly opened in the peak electricity utilization stage, and the control valve 7 is slightly opened in the case of meeting the requirements, at this time, in the normal operation process of the whole system, when the control valve 7 is slightly opened, part of the refrigerant discharged from the throttling device 4 flows to the cold storage device through the control valve 7, and the refrigerant discharged from the cold storage device flows to the compressor 6 through the auxiliary evaporator 9 and the one-way valve 10.

[0052] In the valley electricity utilization stage, the control valve 7 is completely opened, and more low-temperature refrigerant after throttling enters the cold storage device in the normal operation process of the whole system, if the cold storage device is the cold storage device described in embodiment 1 of the application, the low-temperature refrigerant will flow to the refrigerant inlet pipe 101, and be sprayed downward through the liquid outlet holes of the liquid distributor 3, and the outer surfaces of the three cold storage bodies 2 in the shell 1 are respectively sprayed, and the cold quantity of the low-temperature working medium is respectively stored in the cold storage bodies 2, and is used for exchanging and transferring with the cold quantity of the carrier refrigerant in the carrier refrigerant pipeline 201.

[0053] Preferably, the refrigeration system further comprises the gaseous thermal storage device 8 described in embodiment 2, which is connected to the refrigerant pipeline of the refrigeration system and is arranged at the outlet end of the evaporator 5 of the refrigeration system. The refrigerant enters the gaseous thermal storage device 8 after completing heat absorption in the evaporator 5, absorbs the heat of the cold storage body 802 in the gaseous thermal storage device 8, and then the superheated refrigerant enters the compressor 6 for compression. By arranging the thermal storage device at the outlet end of the evaporator 5 of the refrigeration system, the effect of the required superheat degree in the suction process of the compressor can be achieved.

[0054] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cold storage device, characterized in that: It comprises a shell (1) and a cold storage body (2), wherein: A refrigerant liquid inlet pipe (101) is provided on the top of the shell (1), the cold storage body (2) is provided in the shell (1), and a cold medium pipe (201) is provided in the cold storage body (2), and both ends of the cold medium pipe (201) extend out of the shell (1); a liquid cavity is formed on the circumferential inner side surface of the cold storage body (2) and the shell (1), and a refrigerant liquid outlet pipe (102) is provided on the shell (1), and the refrigerant liquid outlet pipe (102) is communicated with the liquid cavity; There are more than two cold storage bodies (2), and each of the cold storage bodies (2) is distributed in sequence and spaced apart along the height direction of the shell (1); There are more than two cold storage bodies (2), and the cold storage body (2) arranged at the bottom is a bottom cold storage body, and the cold storage body (2) arranged above the bottom cold storage body is an upper cold storage body. The upper cold storage body is a cylindrical structure with two ends open, and the circumferential edge of the bottom of the upper cold storage body is connected to the inner side surface of the shell (1); the diameter of the top end of the upper cold storage body gradually decreases along the shell (1) from top to bottom.

2. The cold storage device according to claim 1, characterized in that The outer surface profile of the upper cold storage body is in the shape of a truncated cone; the outer surface profile of the cold storage body (2) is in the shape of a cone.

3. The cold storage device according to claim 1 or 2, characterized in that: The cooling medium pipes (201) in the cold storage body (2) are distributed in a spiral shape.

4. The cold storage device according to claim 1 or 2, characterized in that: The cold storage device further comprises a liquid distributor (3), wherein the liquid distributor (3) is arranged in the shell (1) and connected to the refrigerant liquid inlet pipe (101).

5. The cold storage device according to claim 4, characterized in that The liquid distributor (3) comprises a liquid distribution straight tube (301) and an arc tube (302), wherein the liquid distribution straight tube (301) is connected to the refrigerant liquid inlet tube (101) and the liquid distribution straight tube (301) is distributed along the circumferential direction of the refrigerant liquid inlet tube (101), and the arc tube (302) connects two adjacent liquid distribution straight tubes (301), the arc tubes (302) are distributed along the circumferential direction, and multiple circles of the arc tubes (302) are distributed along the radial direction of the liquid distribution straight tube (301), and liquid outlets are provided on the liquid distribution straight tube (301) and the arc tube (302).

6. A refrigeration system, characterized in that: The refrigeration system is provided with a cold storage device according to any one of claims 1 to 5, and a refrigerant liquid inlet pipe (101) and a refrigerant liquid outlet pipe (102) of the cold storage device are connected to a refrigerant pipeline of the refrigeration system.

7. The refrigeration system according to claim 6, characterized in that The refrigeration system comprises a cold storage branch, one end of the cold storage branch is arranged between the throttling device (4) and the evaporator (5) of the refrigeration system, and the other end is arranged between the evaporator (5) and the compressor (6) of the refrigeration system, the cold storage device is arranged on the cold storage branch, a control valve (7) and an auxiliary evaporator (9) are arranged on the cold storage branch, a refrigerant liquid inlet pipe (101) of the cold storage device is connected to the control valve (7), and a refrigerant liquid outlet pipe (102) of the cold storage device is connected to the auxiliary evaporator (9).

8. The refrigeration system according to claim 6, wherein: The refrigeration system further comprises a gaseous cold storage device (8), the gaseous cold storage device (8) being connected to a refrigerant pipeline of the refrigeration system and the gaseous cold storage device (8) being arranged at an outlet end of an evaporator (5) of the refrigeration system.

9. The refrigeration system according to claim 8, characterized in that The gaseous cold storage device (8) further comprises an outer shell (801) and a cold storage body (802), an airflow cavity is formed between the outer shell (801) and the cold storage body (802), the airflow cavity surrounds the cold storage body (802), a refrigerant air inlet pipe (8011) and a refrigerant air outlet pipe (8012) are provided on the outer shell (801), the airflow cavity is communicated with the refrigerant air inlet pipe (8011) and the refrigerant air outlet pipe (8012), a cold-carrying inlet component and a cold-carrying outlet component are provided on the cold storage body (802), a plurality of cold-carrying pipes (8021) are provided on the cold storage body (802), and the interiors of the cold-carrying inlet component and the cold-carrying outlet component are communicated with the cold-carrying pipes (8021).

10. The refrigeration system according to claim 9, characterized in that The refrigerant inlet pipe (8011) and the refrigerant outlet pipe (8012) are arranged relative to each other, the cold-carrying inlet component and the cold-carrying outlet component are arranged relative to each other, and the refrigerant inlet pipe (8011), the refrigerant outlet pipe (8012), the cold-carrying inlet component and the cold-carrying outlet component are distributed along the circumferential direction of the outer shell (801).

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