CN221099027U

CN221099027U - Refrigerating system and refrigerating equipment

Info

Publication number: CN221099027U
Application number: CN202322979288.9U
Authority: CN
Inventors: 叶钰龙; 伍智勤; 陈瑞博; 赖晓翔; 余圣辉
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2023-11-01
Filing date: 2023-11-01
Publication date: 2024-06-07
Anticipated expiration: 2033-11-01

Abstract

The utility model discloses a refrigerating system and refrigerating equipment, and belongs to the technical field of refrigerating equipment, wherein the refrigerating system comprises: the main flow path comprises a condenser and a compressor, the compressor is provided with a main air suction port, an auxiliary air suction port and an exhaust port, and the condenser is connected with the exhaust port; the first branch comprises a first freezing evaporator, one end of the first branch is communicated with the outlet of the condenser, and the other end of the first branch is communicated with the main air suction port; the second branch is connected in parallel with the first branch, the second branch comprises a second freezing evaporator, one end of the second branch is communicated with an outlet of the condenser, the other end of the second branch is communicated with the auxiliary air suction port, and the first freezing evaporator and the second freezing evaporator are both used for providing cold energy for the freezing compartment so as to increase the released cold energy and improve the cooling speed of the freezing compartment.

Description

Refrigerating system and refrigerating equipment

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigeration system and refrigeration equipment.

Background

In the related art, a single air suction compressor is adopted for compressors of refrigeration devices such as a refrigerator and a freezer, a condenser, a throttle and an evaporator are sequentially connected through pipelines to form a circulating refrigeration system, and the temperature in a compartment is reduced through heat exchange between the evaporator and the compartment, so that a refrigeration effect is achieved on articles, but the existing refrigeration device generally has the defects of insufficient cold quantity and low refrigeration speed.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a refrigerating system which is beneficial to increasing the released cold and improving the refrigerating speed.

The utility model also provides refrigeration equipment.

An embodiment of a refrigeration system according to a first aspect of the present utility model includes: the main flow path comprises a condenser and a compressor, the compressor is provided with a main air suction port, an auxiliary air suction port and an exhaust port, and the condenser is connected with the exhaust port; the first branch comprises a first freezing evaporator, one end of the first branch is communicated with the outlet of the condenser, and the other end of the first branch is communicated with the main air suction port; the second branch is connected in parallel with the first branch, the second branch comprises a second freezing evaporator, one end of the second branch is communicated with an outlet of the condenser, the other end of the second branch is communicated with the auxiliary air suction port, and the first freezing evaporator and the second freezing evaporator are both used for providing cold energy for the freezing compartment.

The refrigerating system provided by the embodiment of the utility model has at least the following beneficial effects: the first branch and the second branch are communicated with the main flow path, the main flow path can conduct the condensed refrigerant into the first branch and the second branch, the first branch comprises a first freezing evaporator, the second branch comprises a second freezing evaporator, so that the first freezing evaporator and the second freezing evaporator operate together.

The main flow path comprises a condenser and a compressor, the compressor is provided with a main air suction port and an auxiliary air suction port, the first branch and the second branch are connected in parallel, the first branch and the second branch are connected with the main flow path, one end of the first branch is communicated with an outlet of the condenser, the other end of the first branch is communicated with the main air suction port, the first branch comprises a first freezing evaporator, one end of the second branch is communicated with an outlet of the condenser, the other end of the second branch is communicated with the auxiliary air suction port, the second branch comprises a second freezing evaporator, when the first branch and the second branch are communicated with the main flow path, the main flow path can conduct refrigerant to the first freezing evaporator and the second freezing evaporator, so that the first freezing evaporator and the second freezing evaporator can operate together, the refrigerating system can be applied to refrigerating equipment with a freezing compartment, the first freezing evaporator and the second freezing evaporator can jointly provide cold energy for the freezing compartment, the refrigerating capacity of the refrigerating system is beneficial to be improved, the refrigerating speed of the refrigerating compartment is improved, the air suction port is provided with the main air suction port and the auxiliary air suction port, and the compressor can simultaneously operate with the main flow path and the auxiliary air suction port, and the refrigerating system can simultaneously improve the refrigerating efficiency.

According to some embodiments of the utility model, the first branch further comprises a first throttling element arranged between the condenser and the first freeze evaporator, and the second branch further comprises a second throttling element arranged between the condenser and the second freeze evaporator.

According to some embodiments of the utility model, the second branch is provided with a control valve for controlling the on-off of the second branch.

According to some embodiments of the utility model, the control valve is provided in the second branch and between the condenser and the second throttling element.

According to some embodiments of the utility model, the refrigeration system further comprises a controller, a first temperature sensor for detecting the temperature of the freezer compartment, and a second temperature sensor for detecting the temperature of the first or second freezer evaporator, each of the first and second temperature sensors being electrically connected to the controller, the control valve being electrically connected to the controller; the controller is configured to control the control valve to close when a difference between a detection value of the first temperature sensor and a detection value of the second temperature sensor is lower than a preset value.

According to some embodiments of the utility model, the control valve is a shut-off valve.

According to some embodiments of the utility model, the first throttling element is a capillary tube and the second throttling element is a capillary tube.

According to some embodiments of the utility model, the refrigeration system further comprises heat exchange fins, the first refrigeration evaporator comprises a first coil, the second refrigeration evaporator comprises a second coil, and both the first coil and the second coil are connected to the heat exchange fins.

A refrigeration appliance according to an embodiment of a second aspect of the present utility model includes a refrigeration system as shown in the first aspect; the box body is internally provided with a freezing compartment.

The refrigeration equipment provided by the embodiment of the utility model has at least the following beneficial effects: the first branch and the second branch are communicated with the main flow path, the main flow path can conduct the condensed refrigerant into the first branch and the second branch, the first branch comprises a first freezing evaporator, the second branch comprises a second freezing evaporator, so that the first freezing evaporator and the second freezing evaporator operate together.

According to some embodiments of the utility model, the refrigeration appliance is a refrigerator.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a refrigeration system according to an embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of a refrigeration system according to an embodiment of the present utility model, in which a control valve is connected to a second branch.

Reference numerals:

100. a main flow path; 110. a condenser; 120. a compressor; 121. a main air suction port; 122. an auxiliary air suction port;

200. A first branch; 210. A first freezing evaporator; 220. A first throttling element;

300. a second branch; 310. A second freezing evaporator; 320. A second throttling element;

400. And a control valve.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, a refrigeration system according to an embodiment of the present utility model is applied to a refrigeration apparatus having a freezing compartment, and includes a main flow path 100, a first branch path 200, and a second branch path 300. The first branch 200 is disposed in parallel with the second branch 300, and both the first branch 200 and the second branch 300 are connected with the main flow path 100. The direction indicated by the arrows in fig. 1 and 2 is the flow direction of the refrigerant when both the first branch 200 and the second branch 300 communicate with the main flow path 100.

Referring to fig. 1 and 2, the main flow path 100 includes a condenser 110 and a compressor 120, an inlet end of the compressor 120 has a main suction port 121 and an auxiliary suction port 122, an outlet end of the compressor 120 has an outlet port, and the compressor 120 sucks and compresses air through the main suction port 121 and the auxiliary suction port 122 at the same time, thereby facilitating an increase in intake air amount and compression efficiency, and an increase in operation efficiency of the refrigeration system. The discharge port of the compressor 120 communicates with the inlet of the condenser 110 such that the refrigerant is compressed by the compressor 120 and introduced into the condenser 110 to be condensed.

Referring to fig. 1, one end of the first branch 200 is connected to the outlet of the condenser 110, the other end of the first branch 200 is connected to the main suction port 121, the first branch 200 includes a first freezing evaporator 210, and after the first branch 200 is connected to the main flow path 100, the main flow path 100 may conduct the refrigerant to the first freezing evaporator 210, and the refrigerant evaporates at the first freezing evaporator 210 and releases cold.

Referring to fig. 1, one end of the second branch 300 is connected to the outlet of the condenser 110, the other end of the second branch 300 is connected to the auxiliary suction port 122, the second branch 300 includes a second freezing evaporator 310, and after the second branch 300 is connected to the main flow path 100, the main flow path 100 may conduct the refrigerant to the second freezing evaporator 310, the refrigerant evaporates at the second freezing evaporator 310, and the cold energy is released.

Referring to fig. 1, the first branch 200 and the second branch 300 are both connected to the main flow path 100, the main flow path 100 can conduct the refrigerant to the first freezing evaporator 210 and the second freezing evaporator 310, so as to realize the co-operation of the first freezing evaporator 210 and the second freezing evaporator 310, the refrigeration system can be applied to a refrigeration device having a freezing compartment, the first freezing evaporator 210 and the second freezing evaporator 310 can jointly provide cold to the freezing compartment, which is beneficial to increasing the cold released by the refrigeration system, improving the cooling speed of the freezing compartment, and the compressor 120 compresses by simultaneously sucking air through the main air suction port 121 and the auxiliary air suction port 122, which is beneficial to improving the operation efficiency of the compressor 120, thereby improving the refrigeration efficiency of the refrigeration system.

Along with the improvement of living standard, the storage requirements of users on food and precious food materials are gradually improved; research shows that the deep sea seafood products can better meet the high quality requirements of food when being stored at the temperature of minus 40 ℃ and below, and the fresh-keeping time of the seafood is greatly prolonged. When food is frozen in a refrigerator, water in the food starts to freeze at minus 1 ℃ and starts to be in an ice crystallization state at about minus 5 ℃, if the temperature is too long, the ice crystallization is increased, the cell membrane of the food is destroyed by the increased ice crystallization, the destroyed cells exude water after thawing, and the water is lost together with nutrient components and taste components, so that the taste, the taste and the nutrition are destroyed.

The refrigeration system provides cold energy to the single freezing chamber through the first freezing evaporator 210 and the second freezing evaporator 310, is favorable for increasing the released cold energy, improves the cooling speed of the freezing chamber, is suitable for being used in a scene with large cold energy, rapid cooling or deep cooling, is favorable for better meeting the storage requirement of seafood products needing deep cooling storage, shortens the time of food passing through a temperature zone, is favorable for retaining the moisture of food, and reduces the damage of nutritional ingredients, taste and flavor.

Referring to fig. 2, it is understood that the second branch 300 includes a control valve 400, and the control valve 400 may be used to control the on/off of the second branch 300. That is, the refrigeration system can realize the common operation of the first freezing evaporator 210 and the second freezing evaporator 310 or the operation of only the first freezing evaporator 210 through the control of the control valve 400, thereby meeting the use requirements of different scenes.

Referring to fig. 2, the refrigeration system starts a rapid cooling mode, the refrigeration system can control the control valve 400 to enable the first branch 200 and the second branch 300 to be communicated with the main flow path 100, the main flow path 100 can conduct the refrigerant to the first freezing evaporator 210 and the second freezing evaporator 310, the first freezing evaporator 210 and the second freezing evaporator 310 jointly provide energy for the freezing compartment, so that the temperature in the freezing compartment is rapidly reduced, the freezing temperature in the freezing compartment is further reduced, and the temperature interval in the freezing compartment can be reduced to-18 ℃ to-40 ℃ to meet the use requirements of quick freezing and deep cooling of partial articles.

Compared with the traditional refrigerating equipment adopting a single evaporator for freezing the freezing compartments, the refrigerating system provides cold energy for the single freezing compartment through the first freezing evaporator 210 and the second freezing evaporator 310, and compared with the traditional refrigerating equipment adopting the same-displacement compressor, the refrigerating system improves the cold energy by about 30%, has remarkable improving effect and improves comprehensive energy efficiency.

Referring to fig. 2, when the refrigeration system is in a working condition without large cooling capacity, the refrigeration system can control the control valve 400 to close the second branch 300, that is, only the first freezing evaporator 210 provides cooling capacity to the freezing chamber, which is beneficial to reducing the energy consumption of the refrigeration system.

Referring to fig. 2, it can be understood that the compressor 120 provided in the embodiment of the present utility model is a double suction compressor, the cylinder of the compressor 120 has a compression cavity, and the main air suction port 121 and the auxiliary air suction port 122 are both communicated with the compression cavity, so that the pistons reciprocate at two ends in the compression cavity under the driving action of the motor, so as to open and close the main air suction port 121 and the auxiliary air suction port 122, and match with the arrangement of the exhaust port, so as to implement compression of the refrigerant.

In the process of one-time reciprocating compression of the piston, the air amount sucked by the main air suction port 121 is larger than the air amount sucked by the auxiliary air suction port 122, that is, the refrigerant consumed by the first freezing evaporator 210 is more than the refrigerant consumed by the second freezing evaporator 310, the cooling capacity released by the first freezing evaporator 210 is more than the cooling capacity released by the second freezing evaporator 310, and the main air suction port 121 is kept in communication with the first branch 200, so that the normal operation of the compressor 120 is ensured. When the first freezing evaporator 210 and the second freezing evaporator 310 are operated together, the temperature value of the second freezing evaporator 310 approaches the temperature value of the first freezing evaporator 210 as the temperature between the freezing rooms gradually decreases.

Referring to fig. 2, the control valve 400 is disposed on the second branch 300 in the refrigeration system, that is, when the refrigeration system is in a working condition without large cooling capacity, the refrigeration system can control the control valve 400 to close the second branch 300, while the first branch 200 is in a normal-open state, that is, only the first freezing evaporator 210 provides cooling capacity to the freezing compartment, and because the cooling capacity released by the first freezing evaporator 210 is relatively large, the use requirement of the freezing compartment can be satisfied, which is beneficial to realizing accurate control of the cooling of the first freezing evaporator 210 and avoiding the mutual influence between the branches.

Referring to fig. 2, it may be understood that, specifically, the controller may be a stop valve, and the stop valve is disposed between the condenser 110 and the second freezing evaporator 310, and the second branch 300 may be conveniently blocked or opened by the setting of the stop valve, so as to realize the on-off control of the second branch 300 and the main flow path 100, so that the refrigeration system may select the second freezing evaporator 310 according to the actual working condition, and the cooperation of the first freezing evaporator 210 and the second freezing evaporator 310 is beneficial to improving the cooling capacity released from the freezing chamber and accelerating the cooling speed of the freezing chamber.

As another embodiment, the control valve 400 may be a valve body with a flow path on-off control function, such as a gate valve, a diaphragm valve, and a ball valve, and the structure of such valve body is not described herein.

It will be appreciated that in this embodiment, the refrigeration system further includes a controller, a first temperature sensor for detecting the temperature of the freezing compartment, and a second temperature sensor for detecting the temperature of the first freezing evaporator 210 or the second freezing evaporator 310, wherein the first temperature sensor and the second temperature sensor are electrically connected to the controller, the control valve 400 may be an electrically controlled valve, and the control valve 400 is electrically connected to the controller.

The controller is configured to control the control valve 400 to be closed when a difference between the detection value of the first temperature sensor and the detection value of the second temperature sensor is lower than a preset value.

Specifically, the preset value may be set to 3 ℃, in the initial state, the control valve 400 is in a conducting state, the first branch 200 and the second branch 300 are both in communication with the main flow path 100, the main flow path 100 may conduct the refrigerant to the first freezing evaporator 210 and the second freezing evaporator 310, so as to realize the co-operation of the first freezing evaporator 210 and the second freezing evaporator 310, and the first freezing evaporator 210 and the second freezing evaporator 310 may release the cold energy to the freezing chamber together, so that the temperature in the freezing chamber is rapidly reduced.

Until the difference between the temperature value detected by the second temperature sensor and the temperature value detected by the first temperature sensor is less than or equal to 3 ℃, that is, it is judged that the temperature in the freezing compartment has approached the temperature of the first freezing evaporator 210 or the second freezing evaporator 310, no large amount of cold is needed, at this time, the controller generates a control signal and sends the control signal to the control valve 400, the control valve 400 receives the control signal and controls the second branch 300 to be closed, that is, the second freezing evaporator 310 is closed, and the cold is provided to the freezing compartment only by the first freezing evaporator 210, so as to maintain the temperature in the freezing compartment, or the temperature in the freezing compartment is continuously gradually reduced, which is beneficial to reducing the energy consumption of the refrigeration system and reducing the waste of cold.

It should be noted that, for the controller, the present utility model mainly protects the connection mode thereof; the control principle of the controller and the detection principles of the first temperature sensor and the second temperature sensor are not described here again.

Referring to fig. 1 and 2, it will be appreciated that the first branch 200 further includes a first throttling element 220, where the first throttling element 220 is disposed between the condenser 110 and the first freezing evaporator 210, i.e., the inlet of the first throttling element 220 is in communication with the outlet of the condenser 110, and the outlet of the first throttling element 220 is in communication with the inlet of the first freezing evaporator 210, i.e., the refrigerant flowing into the first branch 200 is throttled by the first throttling element 220 to control the pressure and flow rate of the refrigerant entering the first freezing evaporator 210 to ensure that the refrigeration system operates under proper conditions. When the first freezing evaporator 210 of the first branch circuit 200 is in an operating state, the first throttling element 220 can maintain the uniform and stable flow of the refrigerant in the first branch circuit 200, and avoid the variation of the pressure and the temperature of the refrigerant caused by the excessive or insufficient refrigerant.

Referring to fig. 1 and 2, the second branch 300 further includes a second throttling element 320, where the second throttling element 320 is disposed between the condenser 110 and the second freezing evaporator 310, i.e., an inlet of the second throttling element 320 is in communication with an outlet of the condenser 110, and an outlet of the second throttling element 320 is in communication with an inlet of the second freezing evaporator 310, i.e., the refrigerant introduced into the second branch 300 needs to undergo throttling treatment by the second throttling element 320 to control the pressure and flow rate of the refrigerant introduced into the second freezing evaporator 310, so as to ensure that the refrigeration system operates under the correct conditions. When the second freezing evaporator 310 of the second branch 300 is in an operating state, the second throttling element 320 can maintain the uniform and stable flow of the refrigerant in the second branch 300, and avoid the variation of the pressure and the temperature of the refrigerant caused by the excessive or insufficient refrigerant.

It should be noted that, the first throttling element 220 or the second throttling element 320 may be a capillary tube, an expansion valve, or other elements with throttling function, and the structures of the capillary tube and the expansion valve are not described herein.

As another embodiment, the first branch 200 includes a first throttling element 220, the first throttling element 220 is disposed between the condenser 110 and the first freezing evaporator 210, the second branch 300 includes a second throttling element 320, the second throttling element 320 is disposed between the condenser 110 and the second freezing evaporator 310, and the first throttling element 220 and the second throttling element 320 are capillary tubes. Specifically, the conduction caliber of the first throttling element 220 is larger than that of the second throttling element 320, so that the releasable cold energy of the first freezing evaporator 210 is larger than that of the second freezing evaporator 310, and when the control valve 400 controls the second branch 300 to be closed, the refrigeration system only provides cold energy for the freezing compartment through the first freezing evaporator 210, thereby meeting the storage requirement of articles in the freezing compartment and being beneficial to avoiding the waste of the cold energy.

It will be appreciated that in this embodiment, the refrigeration system further includes a plurality of heat exchange fins, the first refrigeration compartment includes a first coil, the second refrigeration compartment includes a second coil, the refrigerant is capable of evaporating and releasing cold in the first coil and the second coil, and the first coil and the second coil are each connected to a plurality of heat exchange fins, the plurality of heat exchange fins being arranged in a spaced arrangement. That is, the first freezing evaporator 210 and the second freezing evaporator 310 may be connected through heat exchange fins, the first freezing evaporator 210 and the second freezing evaporator 310 share the same set of heat exchange fins, the first freezing evaporator 210 and the second freezing evaporator 310 share heat exchange areas of the heat exchange fins, and provide cold to the freezing compartment, so that the installation of the first freezing evaporator 210 and the second freezing evaporator 310 may be facilitated.

The heat exchange efficiency of the first freezing evaporator 210 and the second freezing evaporator 310 and the external environment can be improved through the heat exchange fins, so that the first freezing evaporator 210 and the second freezing evaporator 310 can provide the cooling capacity released by the evaporation of the refrigerant for the freezing compartment, the rapid cooling in the freezing compartment can be realized, the freezing temperature of the freezing compartment can be further reduced, and the temperature range of the freezing compartment can be reduced to-18 ℃ to-40 ℃, namely, the refrigerating system has a deep cooling function and a quick freezing function, the risk of damage to stored articles is reduced, and the storage requirement of more articles is met.

The refrigeration equipment comprises the refrigeration system and the box body, wherein the refrigeration chamber is arranged in the box body. In the refrigeration device, the refrigerant is compressed by the compressor 120 and then enters the condenser 110 to be condensed, the first branch 200 and the second branch 300 are both communicated with the main flow path 100, the main flow path 100 can conduct the condensed refrigerant into the first branch 200 and the second branch 300, the first branch 200 comprises the first freezing evaporator 210, the second branch 300 comprises the second freezing evaporator 310, so that the first freezing evaporator 210 and the second freezing evaporator 310 operate together, the refrigeration system can be applied to the refrigeration device with a freezing room, the first freezing evaporator 210 and the second freezing evaporator 310 can jointly provide cold energy for the freezing room, the cold energy released by the refrigeration system is beneficial to increasing the cooling speed of the freezing room, the outlet of the first freezing evaporator 210 is communicated with the main air suction port 121, the outlet of the second freezing evaporator 310 is communicated with the auxiliary air suction port 122, the evaporated refrigerant enters the compressor 120 through the main air suction port 121 or the auxiliary air suction port 122 to be compressed again, the circulation of the refrigerant is realized, the compressor 120 can simultaneously perform the compression through the main air suction port 121 and the auxiliary air suction port 122, the refrigeration system is beneficial to increasing the cooling efficiency, the refrigeration system is high in cooling efficiency, the refrigeration system is suitable for the cooling system, and the cooling efficiency is required to be increased, or the cooling system is high in cooling efficiency, and the cooling system is required to be cooled, and the cooling system is cooled.

It will be appreciated that the refrigeration device may be a refrigerator, and the first refrigeration evaporator 210 and the second refrigeration evaporator 310 together provide refrigeration to the freezing compartment, which is beneficial to accelerating the cooling rate in the freezing compartment and reducing the temperature range of the freezing compartment to-18 ℃ to-40 ℃. The refrigerator has the functions of deep cooling and quick freezing, is favorable for popularizing the deep cooling storage function of the refrigerator for users, meets the storage requirements of different articles, shortens the time of food passing through a temperature zone, and better keeps the mouthfeel, moisture and nutrition of the food.

The first freezing evaporator 210 and the second freezing evaporator 310 are arranged adjacent to the wall surface of the box body, and the first freezing evaporator 210 and the second freezing evaporator 310 can realize heat exchange with the freezing chamber in a direct cooling mode, so that the cooling speed in the freezing chamber is favorably increased, the cryogenic temperature of the freezing chamber is reduced, and the refrigerating efficiency of the refrigerator is favorably improved.

As another embodiment, the freezing compartment is provided with a tuyere, the refrigerating system further comprises a blower fan, the first freezing evaporator 210 and the second freezing evaporator 310 are disposed opposite to the blower fan, and the tuyere is communicated with the blower fan. That is, the first freezing evaporator 210 and the second freezing evaporator 310 can exchange heat with the freezing chamber in an air cooling manner, which is beneficial to reducing the humidity in the freezing chamber and reducing the frost formation in the freezing chamber.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A refrigeration system for use with a refrigeration appliance having a refrigeration compartment, comprising:

A main flow path including a condenser and a compressor, the compressor having a main suction port, an auxiliary suction port, and a discharge port, the condenser being connected to the discharge port;

The first branch comprises a first freezing evaporator, one end of the first branch is communicated with the outlet of the condenser, and the other end of the first branch is communicated with the main air suction port;

The second branch is connected in parallel with the first branch, the second branch comprises a second freezing evaporator, one end of the second branch is communicated with an outlet of the condenser, the other end of the second branch is communicated with the auxiliary air suction port, and the first freezing evaporator and the second freezing evaporator are both used for providing cold energy for the freezing compartment.

2. A refrigeration system as set forth in claim 1 wherein: the first branch further comprises a first throttling element, the first throttling element is arranged between the condenser and the first freezing evaporator, the second branch further comprises a second throttling element, and the second throttling element is arranged between the condenser and the second freezing evaporator.

3. A refrigeration system as set forth in claim 2 wherein: the second branch is provided with a control valve, and the control valve is used for controlling the on-off of the second branch.

4. A refrigeration system as set forth in claim 3 wherein: the control valve is arranged in the second branch and is positioned between the condenser and the second throttling element.

5. A refrigeration system as set forth in claim 3 wherein: the refrigeration system further comprises a controller, a first temperature sensor for detecting the temperature of the freezing compartment, and a second temperature sensor for detecting the temperature of the first freezing evaporator or the second freezing evaporator, wherein the first temperature sensor and the second temperature sensor are electrically connected with the controller, and the control valve is electrically connected with the controller; the controller is configured to control the control valve to be closed when a difference between a detection value of the first temperature sensor and a detection value of the second temperature sensor is lower than a preset value.

6. A refrigeration system as set forth in claim 3 wherein: the control valve is a stop valve.

7. A refrigeration system as set forth in claim 2 wherein: the first throttling element is a capillary tube and the second throttling element is a capillary tube.

8. A refrigeration system as set forth in claim 1 wherein: the refrigeration system further comprises heat exchange fins, the first refrigeration evaporator comprises a first coil, the second refrigeration evaporator comprises a second coil, and the first coil and the second coil are connected with the heat exchange fins.

9. Refrigeration equipment, characterized in that it comprises:

A refrigeration system according to any of claims 1 to 8;

The box body is internally provided with a freezing compartment.

10. The refrigeration appliance of claim 9 wherein: the refrigeration equipment is a refrigerator.