CN221099024U

CN221099024U - Refrigerating system and refrigerating equipment

Info

Publication number: CN221099024U
Application number: CN202322953266.5U
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, which belong to the technical field of refrigerating systems, wherein the refrigerating system comprises: a first branch comprising a first throttling element and a freezing evaporator connected in series; a second branch comprising a second throttling element and a refrigeration evaporator connected in series; the compressor is provided with a main air suction port, an auxiliary air suction port and an exhaust port, wherein the main air suction port is connected with the outlet of the first branch, and the auxiliary air suction port is connected with the outlet of the second branch; the inlet of the condenser is connected with the exhaust port, and the outlet of the condenser is respectively connected with the inlet of the first branch and the inlet of the second branch; the first flow regulating part is arranged at the inlet of the second branch. The refrigerating system can greatly improve the total refrigerating capacity of the freezing evaporator and the refrigerating evaporator, has smaller throttling loss and high comprehensive energy efficiency.

Description

Refrigerating system and refrigerating equipment

Technical Field

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

Background

At present, in a refrigerating system adopted by a refrigerator product, the adopted compressor is a single suction compressor, and the refrigerating system is a conventional single suction serial-parallel system or a pure parallel system, so that the refrigerating capacity and the energy efficiency of the refrigerating system cannot be further improved.

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, the total refrigerating capacity of the system is greatly improved, the throttling loss is smaller, and the comprehensive energy efficiency is high.

The utility model also provides refrigeration equipment.

An embodiment of a first aspect of the present utility model provides a refrigeration system, comprising:

A first branch comprising a first throttling element and a freezing evaporator connected in series;

a second branch comprising a second throttling element and a refrigeration evaporator connected in series;

The compressor is provided with a main air suction port, an auxiliary air suction port and an exhaust port, wherein the main air suction port is connected with the outlet of the first branch, and the auxiliary air suction port is connected with the outlet of the second branch;

The inlet of the condenser is connected with the exhaust port, and the outlet of the condenser is respectively connected with the inlet of the first branch and the inlet of the second branch;

The first flow regulating part is arranged at the inlet of the second branch.

The refrigerating system according to the embodiment of the first aspect of the utility model has at least the following beneficial effects: the evaporation temperature of the freezing evaporator is lower than that of the refrigerating evaporator, the first branch is correspondingly connected with the main air suction port of the compressor, the second branch is correspondingly connected with the auxiliary air suction port of the compressor, the first branch and the second branch can independently operate, the throttling loss of the second branch can be reduced, the refrigerating capacity of the refrigerating system is greatly improved, in addition, the first branch and the second branch can be subjected to flow distribution control through the first flow regulating piece, the flow demand of the refrigerating system is matched, the flow distribution problem of the refrigerating evaporator is solved, and therefore the freezing evaporator and the refrigerating evaporator can be effectively refrigerated together during double-suction operation of the compressor, and the comprehensive energy efficiency of the refrigerating system is improved.

In some embodiments of the utility model, the inlet of the first branch is provided with a second flow regulator.

Further, the first and second restrictions are capillary tubes.

Further, the first flow regulator and the second flow regulator are both electronic expansion valves.

In some embodiments of the present utility model, at least two second throttling elements are provided, all the second throttling elements are arranged in parallel, the first flow adjusting element is a control valve, and the control valve is arranged at an inlet of the second branch and is used for controlling the switch of at least one second throttling element.

Further, the first and second restrictions are capillary tubes.

Further, the second throttling element is provided with two control valves, the control valves are electric valves, the electric valves are arranged at the inlet of one of the second throttling elements, and the electric valves are configured to: and closing any one of the second throttling parts when the refrigerant demand of the refrigeration evaporator is smaller than a preset value.

In some embodiments of the utility model, the first restriction has an inner diameter that is greater than an inner diameter of the second restriction.

An embodiment of the second aspect of the present utility model provides a refrigeration apparatus comprising a refrigeration system according to an embodiment of the first aspect of the present utility model.

The refrigeration equipment according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: the evaporation temperature of the freezing evaporator is lower than that of the refrigerating evaporator, the first branch is connected with the main air suction port of the compressor, the second branch is connected with the auxiliary air suction port of the compressor, the first branch and the second branch can independently operate, throttling loss of the second branch is reduced, refrigerating capacity of a refrigerating system is greatly improved, and the first flow regulating part can be utilized to control flow distribution of the refrigerant to the first branch and the second branch so as to match flow requirements of the refrigerating equipment, so that the flow distribution problem of the refrigerating evaporator is solved, and the freezing evaporator and the refrigerating evaporator can be effectively refrigerated together during double suction operation of the compressor, and comprehensive energy efficiency of the refrigerating equipment is improved.

In some embodiments of the utility model, the refrigeration equipment is provided with a press bin, and the first flow regulator, the first throttle, the second throttle, the compressor and the condenser are arranged in the press bin.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

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 view of a refrigeration system according to another embodiment of the present utility model.

Reference numerals:

Compressor 100, main suction port 110, auxiliary suction port 120, discharge port 130,

The condenser 200 is provided with a heat exchanger,

The first leg 310, the second leg 320,

The freezing evaporator 410, the refrigerating evaporator 420,

The first restriction 510, the second restriction 520,

The first electronic expansion valve 610, the second electronic expansion valve 620,

And a control valve 700.

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 features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Along with the improvement of the life quality of people and the development of domestic fresh electronic commerce, high-end food materials such as salmon, tuna, monarch crab, australian beef and the like are touted by people. Different from common food materials, the high-end food materials have more severe requirements on low-temperature fresh-keeping; in order to solve the fresh storage problems of fresh, massive food and high-end food, the cryogenic refrigerator product provides a cell-level freezing technology, adopts the functions of cryogenic quick freezing and accurate temperature control, and has the quick freezing temperature of-40 ℃ so that moisture in the food can quickly pass through the maximum ice crystal generation zone, the nutrition loss caused by the puncturing of cells by the ice crystals is avoided, the nutrition of the food is furthest preserved, and the purposes that the high-end food can be preserved for a long time, the original fresh taste can be maintained, and the cryogenic fresh-keeping effect is achieved are achieved.

Based on the above, the embodiment of the utility model provides a refrigerating system and refrigerating equipment, which can greatly improve the total refrigerating capacity of a freezing evaporator and a refrigerating evaporator, and has smaller throttling loss and high comprehensive energy efficiency.

A refrigeration system according to an embodiment of the present utility model is described below with reference to fig. 1 and 2.

As shown in fig. 1 and 2, a refrigeration system according to an embodiment of the present utility model includes: first branch 310, second branch 320, compressor 100, condenser 200, and first flow regulator.

Wherein the first branch 310 comprises a first restriction 510 and a freeze evaporator 410 connected in series. The second branch 320 includes a second throttle 520 and a refrigerated evaporator 420 connected in series. The compressor 100 has a main intake port 110, an auxiliary intake port 120, and an exhaust port 130, the main intake port 110 being connected to an outlet of the first branch passage 310, and the auxiliary intake port 120 being connected to an outlet of the second branch passage 320. The inlet of the condenser 200 is connected to the exhaust port 130, and the outlet of the condenser 200 is connected to the inlet of the first branch 310 and the inlet of the second branch 320, respectively. The first flow regulator is disposed at the inlet of the second branch 320.

The compressor 100 is a double suction compressor having two suction ports, one of which is a main suction port 110, the other of which is a sub-suction port 120, and the suction pressure of the main suction port 110 is low and the suction pressure of the sub-suction port 120 is high. The compressor 100 may be a double suction centrifugal compressor or a double suction piston compressor. Since the main intake air temperature of the compressor 100 is lower than the sub intake air temperature and the evaporation temperature of the refrigeration evaporator 410 is lower than the evaporation temperature of the refrigeration evaporator 420, the refrigeration evaporator 410 is connected to the main intake port 110 of the compressor 100, and the refrigeration evaporator 420 is connected to the sub intake port 120 of the compressor 100.

The double suction compressor has the advantages of large cooling capacity and high COP (Coefficient Of Performance, that is, coefficient of performance, generally referred to as energy efficiency ratio), and the refrigerating system in the embodiment of the utility model adopts the double suction compressor to compress the refrigerants of the first branch 310 and the second branch 320, so that possibility is provided for ensuring that the refrigerating system has both the cryogenic function and low energy consumption. By adopting the structural design, the refrigeration evaporator 410 and the refrigeration evaporator 420 can perform high-efficiency refrigeration together when the double-suction compressor operates, so that the refrigeration system has good energy-saving value; and, the total double suction flow is greatly increased, so that the total refrigeration capacity of the refrigeration evaporator 410 and the refrigeration evaporator 420 is greatly improved, and the refrigeration system has high comprehensive energy efficiency.

It will be appreciated that with conventional single suction systems, the refrigeration evaporator 420 operates at a low evaporation temperature, approaching-20 ℃; in the present embodiment, the outlet of the refrigeration evaporator 420 is connected to the auxiliary suction port 120 of the compressor 100, the evaporation temperature of the refrigeration evaporator 420 is-10 ℃, and compared with the prior art, the throttling loss of the second branch 320 is smaller.

The flow of refrigerant in the first branch 310 is illustrated as an example. The discharge port 130 of the compressor 100 is connected to the inlet of the condenser 200 through a pipe, the outlet of the condenser 200 is connected to the inlet of the first throttling element 510 through a pipe, the outlet of the first throttling element 510 is connected to the inlet of the freezing evaporator 410 through a pipe, and the outlet of the freezing evaporator 410 is connected to the main suction port 110 of the compressor 100 through a pipe, thereby forming a refrigerant circuit. The refrigerant flowing in the first branch 310 flows into the compressor 100 through the main suction port 110, and the compressor 100 compresses the gaseous refrigerant, so that the pressure and temperature of the gaseous refrigerant are increased; then, the high-temperature and high-pressure refrigerant gas flows to the condenser 200, and the refrigerant gas flowing in the condenser 200 transfers heat to the air, and is liquefied after heat dissipation, thereby becoming a liquid refrigerant; then, the liquid refrigerant is reduced in pressure after flowing through the first throttling part 510, and becomes a low-temperature low-pressure refrigerant liquid; subsequently, the low-temperature low-pressure refrigerant liquid flows into the freezing evaporator 410 to transfer the refrigerating capacity to the outside, and the refrigerant liquid flowing in the freezing evaporator 410 absorbs external heat and evaporates, becomes a refrigerant in a gaseous state, and then re-enters the compressor 100 through the main suction port 110, thereby circulating. As shown in fig. 1 and 2, the direction of the arrow indicates the flow direction of the refrigerant.

The flow of refrigerant in the second branch 320 is illustrated as an example. The compressor 100, the condenser 200, the second throttling element 520 and the refrigerating evaporator 420 are sequentially connected in series to form a refrigerant circuit. The refrigerant flowing in the second branch 320 enters the compressor 100 through the auxiliary suction port 120, and the compressor 100 operates to compress the refrigerant which has absorbed heat to become gaseous, so that the gaseous refrigerant becomes high-temperature and high-pressure gas, and is delivered to the condenser 200; the high-temperature and high-pressure refrigerant gas flows in the condenser 200, and is liquefied by radiating heat into the air through heat transfer; the liquid refrigerant is throttled and depressurized as it passes through the second throttling part 520 to become a low-temperature low-pressure refrigerant liquid; subsequently, the low temperature and low pressure refrigerant liquid flows into the refrigerating evaporator 420 and absorbs heat from the outside, thereby completing the refrigerating operation; the refrigerant having absorbed heat flows back into the compressor 100 through the auxiliary suction port 120, thereby circulating. As shown in fig. 1 and 2, the direction of the arrow indicates the flow direction of the refrigerant.

By adopting the above arrangement, the freezing evaporator 410 and the refrigerating evaporator 420 can be operated independently, and the evaporating temperature of the freezing evaporator 410 corresponds to the main suction temperature of the compressor 100, and the evaporating temperature of the refrigerating evaporator 420 corresponds to the sub suction temperature of the compressor 100.

The first flow regulator functions to control the flow distribution between the first branch 310 and the second branch 320. Specifically, the first flow regulator is disposed on the second branch 320, and the action of the first flow regulator controls the flow of the refrigerant flowing to the second throttling element 520, so that the liquid separation between the first branch 310 and the second branch 320 can be changed quickly, which is beneficial to timely and accurately regulating the flow of the refrigerant. The first flow regulator is utilized to adjust the flow split ratio of the first branch 310 and the second branch 320 according to the refrigeration capacity requirements of the refrigeration evaporator 410 and the refrigeration evaporator 420.

It can be appreciated that according to the refrigeration system of the embodiment of the present utility model, the evaporating temperature of the freezing evaporator 410 is lower than that of the refrigerating evaporator 420, by correspondingly connecting the first branch 310 with the main air suction port 110 of the compressor 100 and correspondingly connecting the second branch 320 with the auxiliary air suction port 120 of the compressor 100, the first branch 310 and the second branch 320 can operate independently, the evaporating temperature of the freezing evaporator 410 is matched with the temperature of the main air suction port 110 of the compressor 100, the evaporating temperature of the refrigerating evaporator 420 is matched with the temperature of the auxiliary air suction port 120 of the compressor 100, and thus the purposes of reducing the throttling loss of the second branch 320 and greatly improving the total refrigerating capacity of the refrigeration system are achieved, and the flow distribution of the refrigeration system is matched with the flow distribution problem of the refrigerating evaporator 420 through the first flow regulator, so that the freezing evaporator 410 and the refrigerating evaporator 420 can be cooled together and the double-suction high-efficiency operation is ensured, thereby achieving the purpose of reducing the throttling loss of the second branch 320 and greatly improving the total refrigerating capacity of the refrigeration system.

According to one embodiment of the utility model, the first flow regulator is provided only at the inlet of the second branch 320. The outlet of the first flow regulator is connected to the inlet of the second throttling element 520, and the flow of the refrigerant flowing into the second branch 320 is regulated before the second throttling element 520 throttles the refrigerant.

If the refrigerant demand of the refrigerating evaporator 420 increases or the refrigerant demand of the freezing evaporator 410 decreases, the opening degree of the first flow regulator on the second branch 320 may be controlled to become larger to increase the flow rate of the refrigerant flowing to the second branch 320, and at this time, the flow rate of the refrigerant flowing to the first branch 310 is relatively decreased. If the refrigerant demand of the refrigerating evaporator 420 decreases or the refrigerant demand of the freezing evaporator 410 increases, the opening degree of the first flow regulator on the second branch 320 may be controlled to be decreased to decrease the flow rate of the refrigerant flowing into the second branch 320, and at this time, the flow rate of the refrigerant flowing into the first branch 310 relatively increases.

According to a preferred embodiment of the present utility model, as shown in fig. 1, the inlet of the second branch 320 is provided with a first flow regulator, and the inlet of the first branch 310 is provided with a second flow regulator. On the first branch 310, the second flow regulator, the first throttle 510 and the freeze evaporator 410 are connected in series in this order. On the second branch 320, the first flow regulator, the second throttle 520 and the refrigeration evaporator 420 are connected in series in this order. The inlet of the second flow regulator on the first leg 310 is connected to the inlet of the first flow regulator on the second leg 320 and to the outlet of the condenser 200.

It can be appreciated that the second flow adjusting member is disposed on the first branch 310, and the first flow adjusting member is disposed on the second branch 320, so that the first branch 310 and the second branch 320 can be independently adjustable, and the flow requirements can be precisely matched, thereby solving the liquid separation problem of the refrigeration evaporator 420 and the freezing evaporator 410. When the refrigerating capacity requirement of the freezing evaporator 410 or the refrigerating evaporator 420 changes, the second flow regulator on the first branch 310 and the first flow regulator on the second branch 320 can act simultaneously, so that the flow distribution ratio between the first branch 310 and the second branch 320 can be timely and accurately controlled, and the refrigerating capacity of the freezing evaporator 410 or the refrigerating evaporator 420 can rapidly meet the external refrigerating requirement.

In some examples, the first restriction 510 is a capillary tube and the second restriction 520 is a capillary tube. The use of capillary tubes for both the first and second restrictions 510, 520 can reduce the manufacturing cost of the refrigeration system. It is understood that the first and second restrictions 510 and 520 may be different in length and inside diameter and may be set according to the circumstances of the refrigeration evaporator 420 and the freezing evaporator 410.

In some examples, as shown in fig. 1, where the first and second flow regulators 510 and 520 are capillary tubes, the first and second flow regulators are electronic expansion valves. The electronic expansion valve can control the opening degree according to a feedback signal of the refrigerating system, so that the flow of the refrigerant is accurately controlled.

In the first branch 310, the electronic expansion valve is set as a first electronic expansion valve 610, and the capillary is set as a first capillary. In the second branch 320, the electronic expansion valve is set as a second electronic expansion valve 620, and the capillary is set as a second capillary.

For the first branch 310, the first electronic expansion valve 610 and the first capillary tube are used in combination, so that the problem of refrigerant flow distribution of the refrigeration evaporator 410 is solved, and meanwhile, the first electronic expansion valve 610 can play a role of pre-throttling, so that the problem of low-temperature reliability is effectively solved. For the second branch 320, the second electronic expansion valve 620 and the second capillary tube are used in combination, so as to solve the problem of refrigerant flow distribution of the refrigeration evaporator 420, and meanwhile, the second electronic expansion valve 620 can play a role of pre-throttling, so that the problem of low-temperature reliability is effectively solved. According to the refrigeration system of the embodiment of the utility model, the problem that the second capillary tube is matched with the flow rate at different evaporating temperatures (-40 ℃/-18 ℃) of the freezing evaporator 410 can be solved.

It will be appreciated that the freezing evaporator 410 can reduce the temperature of the freezing chamber to-40 ℃ for deep-freezing and fresh-keeping, at this time, the food will be instantly solidified, and the nutrition and original flavor of the food materials can be maintained to the maximum extent.

According to one embodiment of the present utility model, as shown in fig. 2, at least two second throttles 520 are provided, all the second throttles 520 are disposed in parallel, the first flow regulator is a control valve 700, and the control valve 700 is disposed at an inlet of the second branch 320, so as to control the opening and closing of at least one second throttles 520.

In some examples, the second throttles 520 are provided with two, wherein the inlet of one of the second throttles 520 is provided with a control valve 700, the opening or closing of the second throttles 520 is controlled by the control valve 700, and the other second throttles 520 are kept in a normally open state. Then, when the refrigerant demand of the refrigeration evaporator 420 increases, the control valve 700 controls the corresponding second throttle 520 to be opened so that all the second throttles 520 on the second branch 320 are in an opened state, thereby increasing the flow rate of the refrigerant flowing into the second branch 320; when the refrigerant demand of the refrigeration evaporator 420 decreases, the control valve 700 controls the corresponding second throttling element 520 to be closed, so that only one second throttling element 520 of the second branch 320 is in an opened state, thereby reducing the flow rate of the refrigerant flowing into the second branch 320.

In other examples, the second throttles 520 are provided with three, wherein the inlets of two second throttles 520 are provided with control valves 700, respectively. Of course, in the case where three second restrictors 520 are provided, the control valve 700 may be provided at the inlet of one of the second restrictors 520. Second, it is not excluded that the inlet of each second restriction 520 on the second branch 320 is provided with a control valve 700.

It will be appreciated that a plurality of second throttles 520 connected in parallel are provided on the second branch 320, and a control valve 700 is provided at the inlet of the second branch 320, the control valve 700 serves to control the number of the second throttles 520 that are activated on the second branch 320, so that the number of the second throttles 520 that are activated can be increased or decreased by the control valve 700, thereby controlling the flow rate of the refrigerant on the second branch 320, and enabling the refrigeration evaporator 420 to meet the requirement of rapid cooling. At this time, there is no need to provide a second flow regulator, such as the first electronic expansion valve 610, on the first branch 310.

Compared with the prior art, the refrigerating system provided by the embodiment of the utility model can reduce the control of the refrigerating valve, reduce the system cost and reduce the control difference.

In some examples, all of the second restrictions 520 on the second leg 320 are capillary tubes. The control valve 700 and the plurality of second throttling elements 520 connected in parallel are matched for use, so that the problem that the capillary tube on the second branch 320 is matched with the flow at different freezing temperatures (-40 ℃/-18 ℃), the refrigerating evaporator 420 can be caused to realize rapid cooling, and the cost of the refrigerating system can be reduced.

In some examples, where the second throttle 520 is a capillary tube, the first throttle 510 is a capillary tube, which can further reduce system costs.

In a specific example of the present utility model, as shown in fig. 2, two second throttles 520 are provided, the control valve 700 is an electric valve provided at an inlet of one of the second throttles 520, and one first throttles 510 is provided. And the electrically operated valve is configured to: when the refrigerant demand of the refrigerating evaporator 420 is less than a preset value, any one of the second throttles 520 is closed.

It will be appreciated that when the refrigerant demand of the refrigeration evaporator 420 is greater than or equal to the preset value, the second throttling element 520 on the branch where the electrically operated valve is located is opened by the electrically operated valve, increasing the flow of refrigerant into the branch where the refrigeration evaporator 420 is located. When the refrigerant demand of the refrigeration evaporator 420 is less than the preset value, the second throttling element 520 on the branch where the electric valve is located is closed by the electric valve, and the flow rate of the refrigerant flowing into the branch where the refrigeration evaporator 420 is located is reduced. The preset value may be set according to actual conditions, and is not particularly limited herein.

The first and second restrictions 510 and 520 each employ a capillary tube. The electric valve can control the on-off between the inlet of the corresponding second throttling element 520 and the outlet of the condenser 200.

The first throttling element 510 is disposed on the first branch 310 to match the refrigeration evaporator 410, so that the structure of the first branch 310 can be simplified and the cost of the refrigeration system can be reduced when the refrigeration evaporator 410 meets the refrigeration requirement. Two second throttling elements 520 which are arranged in parallel are arranged on the second branch 320, and an electric valve is arranged to control one of the second throttling elements 520 and is matched with the refrigeration evaporator 420, so that the problem of matching flow of capillary tubes on the second branch 320 with different freezing problems (-40 ℃/-18 ℃) can be solved, the refrigeration evaporator 420 can meet the requirement of rapid cooling, and the cost of a refrigeration system can be reduced.

In addition, on the second branch 320, the opening or closing of the second throttling element 520 is controlled by the opening or closing action of the electric valve, so that the liquid separation between the first branch 310 and the second branch 320 can be changed quickly, which is beneficial to timely and accurately adjusting the flow of the refrigerant.

In some examples, when the first and second throttles 510 and 520 are capillary tubes, the inner diameter of the first throttles 510 is greater than the inner diameter of the second throttles 520, which can enable the flow of refrigerant to the refrigeration evaporator 410 to be greater than the flow of refrigerant to the refrigeration evaporator 420, enabling the refrigeration evaporator 410 to provide more refrigeration to meet the refrigeration demands of the refrigeration system.

Embodiments of the present utility model provide a refrigeration apparatus (not shown) including a refrigeration system according to embodiments of the present utility model.

The evaporating temperature of the freezing evaporator 410 is lower than that of the refrigerating evaporator 420, and the first branch 310 is correspondingly connected with the main air suction port 110 of the compressor 100, the second branch 320 is correspondingly connected with the auxiliary air suction port 120 of the compressor 100, so that the first branch 310 and the second branch 320 independently operate, the evaporating temperature of the freezing evaporator 410 is matched with the main air suction temperature of the compressor 100, the evaporating temperature of the refrigerating evaporator 420 is matched with the auxiliary air suction temperature of the compressor 100, and the purposes of reducing throttling loss of the second branch 320 and greatly improving the total refrigerating capacity of a refrigerating system are achieved; the first branch 310 and the second branch 320 are controlled in flow distribution through the first flow regulator to match the flow requirement of the refrigeration system, so that the flow distribution problem of the refrigeration evaporator 420 is solved, and the refrigeration evaporator 410 and the refrigeration evaporator 420 can be guaranteed to be refrigerated together in high efficiency during double suction operation of the compressor 100, so that the comprehensive energy efficiency of the refrigeration system is improved.

It will be appreciated that the refrigeration appliance may be a refrigerator, freezer or the like. The refrigerating evaporator 420 can provide a sufficient refrigerating capacity for a refrigerating compartment of the refrigerating apparatus, and the freezing evaporator 410 can provide a sufficient refrigerating capacity for a freezing compartment of the refrigerating apparatus.

In some examples, the refrigeration device is provided with a press housing, and the first flow regulator, the first throttle 510, the second throttle 520, the compressor 100, and the condenser 200 are disposed within the press housing. This facilitates maintenance and repair of the first throttling element 510, the second throttling element 520, the first flow regulating element, etc. after the press compartment of the refrigeration equipment is opened. Of course, when a second flow regulator is provided, the second flow regulator is also provided within the press bin.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigeration system, comprising:

The first flow regulating part is arranged at the inlet of the second branch.

2. The refrigerant system as set forth in claim 1, wherein the inlet of said first branch is provided with a second flow regulator.

3. The refrigeration system of claim 2, wherein the first and second restrictions are capillary tubes.

4. A refrigeration system as recited in claim 3 wherein said first flow regulator and said second flow regulator are each electronic expansion valves.

5. The refrigeration system of claim 1 wherein said second restriction is provided in at least two, all of said second restrictions being arranged in parallel, said first flow regulator being a control valve provided at an inlet of said second branch for controlling the opening and closing of at least one of said second restrictions.

6. The refrigerant system as set forth in claim 5, wherein said first and second restrictions are capillary tubes.

7. The refrigeration system of claim 6, wherein there are two of said second restrictions, said control valve is an electrically operated valve, said electrically operated valve is provided at an inlet of one of said second restrictions, and said electrically operated valve is configured to: and closing any one of the second throttling parts when the refrigerant demand of the refrigeration evaporator is smaller than a preset value.

8. The refrigeration system of claim 3 or 6, wherein an inner diameter of the first restriction is greater than an inner diameter of the second restriction.

9. Refrigeration apparatus comprising a refrigeration system according to any one of claims 1 to 8.

10. The refrigeration unit as recited in claim 9 wherein said refrigeration unit is provided with a compressor housing, said first flow regulator, said first throttle, said second throttle, said compressor and said condenser being disposed within said compressor housing.