Refrigerating system and refrigerator

Abstract

The utility model relates to the technical field of household appliances, in particular to a refrigerating system and a refrigerator. A refrigerating system comprises a compressor, a condenser, a freezing evaporator, a refrigeration evaporator and an auxiliary pipe, and at least part of the auxiliary pipe is arranged in the area where the freezing evaporator is located and connected with the freezing evaporator in series. The refrigerating system has a first working state and a second working state; in the first working state, the compressor, the condenser, the freezing evaporator and the auxiliary pipe are sequentially communicated and form a first circulation loop; and in the second working state, the compressor, the auxiliary pipe, the condenser and the refrigeration evaporator are sequentially communicated to form a second circulation loop. The refrigerator comprises the refrigerating system. The auxiliary pipe is connected to the freezing evaporator in series, so that the effect of reducing the working energy consumption of the compressor can be achieved.

Description

TECHNICAL FIELD

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

[0002] In modern society, refrigeration technology plays a vital role in various fields. With the continuous improvement of people's quality of life and the progress of science and technology, the performance and efficiency of refrigeration systems are increasingly concerned. With the enhancement of environmental awareness and the increasingly stringent energy policy, the energy-saving requirements for refrigeration systems are also becoming higher and higher.

[0003] At present, the freezing evaporator and the refrigeration evaporator in the existing refrigerator refrigeration system are connected in parallel with the compressor. When the refrigerator needs refrigeration refrigeration, the compressor provides the refrigeration evaporator with the refrigerant required for refrigeration refrigeration. When the refrigerator needs freezing refrigeration, the compressor provides the freezing evaporator with the refrigerant required for freezing refrigeration. In addition, the refrigerator also needs to periodically use electric heating to defrost the freezing evaporator for freezing refrigeration. However, since the refrigeration refrigeration, freezing refrigeration and defrosting of the refrigerator are independent of each other, and all of them need to consume electricity separately, the working energy consumption of the refrigerator is high. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a refrigeration system and a refrigerator with lower energy consumption.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A refrigeration system, comprising a compressor, a condenser, a freezing evaporator, a refrigeration evaporator and an auxiliary pipe, wherein the auxiliary pipe is at least partially arranged in the area where the freezing evaporator is located, and is connected in series with the freezing evaporator;

[0007] The refrigeration system has a first working state and a second working state;

[0008] In the first working state, the compressor, the condenser, the freezing evaporator and the auxiliary pipe are connected in sequence and form a first circulation loop;

[0009] In the second working state, the compressor, the auxiliary pipe, the condenser and the refrigeration evaporator are connected in sequence and form a second circulation loop.

[0010] It can be understood that by connecting the auxiliary pipe in series with the freezing evaporator, the refrigeration system can increase the flow path and the action area of the refrigerant flowing in the area where the freezing evaporator is located in the first working state, so as to improve the freezing efficiency of the refrigeration system when freezing refrigeration; in the second working state, the refrigerant required by the refrigeration evaporator first exchanges heat through the auxiliary pipe, which can defrost the freezing evaporator and pre-cool the refrigerant, thereby reducing the energy consumption of the compressor.

[0011] The second circulation loop formed by the connection of the compressor, the auxiliary pipe, the condenser and the refrigeration evaporator can use the condensation heat generated by the refrigeration evaporator to defrost. This method does not require additional heating elements or a large amount of external energy input, effectively reducing the energy consumption during defrosting. By switching the circulation loop in different working states, the refrigeration system can flexibly adjust the operation mode according to the actual demand, realizing efficient cooperation of freezing and defrosting functions.

[0012] In one embodiment, the auxiliary pipe has an inlet end, and a three-way valve is connected and communicated at the inlet end, and the auxiliary pipe can be connected and communicated with the compressor and the freezing evaporator through the three-way valve;

[0013] A first one-way valve is arranged in the connection passage between the freezing evaporator and the three-way valve, for controlling the one-way conduction of the freezing evaporator and the auxiliary pipe;

[0014] A second one-way valve is arranged in the connection passage between the auxiliary pipe and the compressor, for controlling the one-way conduction of the compressor and the auxiliary pipe.

[0015] In one embodiment, a first passage is formed between the auxiliary pipe and the compressor, and a second passage is formed between the auxiliary pipe and the condenser;

[0016] The auxiliary pipe has an outlet end, and a first electromagnetic valve is connected and communicated at the outlet end, and the first passage and the second passage can be switched under the control of the first electromagnetic valve;

[0017] A third one-way valve is arranged in the second passage, for controlling the one-way conduction of the auxiliary pipe and the condenser.

[0018] In one embodiment, the freezing evaporator includes fins, and the auxiliary pipe is connected with the fins in a clamping manner.

[0019] In one embodiment, the freezing evaporator includes a freezing refrigeration main pipe, the pipe diameter of the freezing refrigeration main pipe is set as D1, and the pipe diameter of the auxiliary pipe is set as D2, wherein D1>D2.

[0020] In one of the embodiments, the compressor has an exhaust port, and a second electromagnetic valve is connected to and communicates with the compressor at the position of the exhaust port;

[0021] A third passage is formed between the second electromagnetic valve and the auxiliary pipe, a fourth passage is formed between the second electromagnetic valve and the condenser, and the third passage and the fourth passage are switchable under the control of the second electromagnetic valve.

[0022] In one of the embodiments, a fifth passage is formed between the condenser and the refrigeration evaporator, and a sixth passage is formed between the condenser and the freezing evaporator;

[0023] A third electromagnetic valve is connected to and communicates with the outlet of the condenser, and the fifth passage and the sixth passage are switchable under the control of the third electromagnetic valve.

[0024] In one of the embodiments, the refrigeration system has a third working state;

[0025] In the third working state, the compressor, the condenser and the refrigeration evaporator are sequentially connected and form a third circulation loop.

[0026] In one of the embodiments, a gas return main pipe is connected to and communicates with the compressor, and the auxiliary pipe and the refrigeration evaporator communicate with the gas return main pipe in parallel.

[0027] The present application also provides the following technical solutions:

[0028] A refrigerator comprising the refrigeration system in any of the above embodiments.

[0029] Compared with the prior art, by connecting the auxiliary pipe in series with the freezing evaporator, the refrigeration system can increase the flow path and the action area of the refrigerant flowing in the area where the freezing evaporator is located in the first working state, so as to improve the freezing efficiency of the refrigeration system when freezing refrigeration; in the second working state, the refrigeration evaporator required refrigerant first exchanges heat through the auxiliary pipe, which can defrost the freezing evaporator on one hand and pre-cool the refrigerant on the other hand, thereby reducing the working energy consumption of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0031] Figure 1 The refrigeration system provided in the present application is shown in the schematic diagram.

[0032] Figure 2 The third working state of the refrigeration system provided in the present application is shown in the schematic diagram.

[0033] Figure 3 The first working state of the refrigeration system provided in the present application is shown in the schematic diagram.

[0034] Figure 4 The second working state of the refrigeration system provided in the present application is shown in the schematic diagram.

[0035] The element reference numbers are as follows:

[0036] 100, refrigeration system; 1, compressor; 2, condenser; 3, freezing evaporator; 4, refrigerating evaporator; 5, auxiliary pipe; 6, three-way pipe; 7, gas return main pipe; 8, drying filter; 101, first circulation loop; 102, second circulation loop; 103, third circulation loop; 111, fifth passage; 112, sixth passage; 113, first passage; 114, second passage; 115, third passage; 116, fourth passage; 121, third electromagnetic valve; 122, first electromagnetic valve; 123, second electromagnetic valve; 131, first check valve; 132, second check valve; 133, third check valve. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0038] It is to be understood that when a component is referred to as being "on" or "disposed on" another component, it can be directly on the other component or intervening components can also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component, or intervening components can be present. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions as used in the description of the present application are for the purpose of illustration only and do not indicate an exclusive orientation.

[0039] In addition, the terms "first", "second", etc. are used herein only to describe various conditions, and are not intended to denote relative importance or a quantity of the indicated conditions. Thus, a feature defined with "first" or "second" can include at least one of the feature, explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present application, unless otherwise explicitly specified and limited, "on", "under", "above", and "over" of a first feature to a second feature can mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "on", "above", and "over" of a first feature to a second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below", and "underneath" of a first feature to a second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more of the associated listed items.

[0042] The present application claims a refrigeration system 100, particularly applied to a refrigerator.

[0043] As Figures 1 to 4As shown, the refrigeration system 100 provided by the present application comprises a compressor 1, a condenser 2, a freezing evaporator 3, a refrigerating evaporator 4 and an auxiliary pipe 5, the auxiliary pipe 5 is at least partially arranged in the area where the freezing evaporator 3 is located and is connected in series with the freezing evaporator 3; the refrigeration system 100 has a first working state and a second working state; in the first working state, the compressor 1, the condenser 2, the freezing evaporator 3 and the auxiliary pipe 5 are sequentially communicated and form a first circulation loop 101; in the second working state, the compressor 1, the auxiliary pipe 5, the condenser 2 and the refrigerating evaporator 4 are sequentially communicated and form a second circulation loop 102. Herein, the first working state of the refrigeration system 100 as described above specifically refers to the working state of the refrigeration system 100 when used for freezing refrigeration; the second working state of the refrigeration system 100 as described above specifically refers to the working state of the refrigeration system 100 when used for defrosting operation of the freezing evaporator 3.

[0044] As can be seen from the above, in the first working state of the refrigeration system 100, the refrigerant in the freezing evaporator 3 flows back to the compressor 1 through the auxiliary pipe 5; since the auxiliary pipe 5 is at least partially arranged in the area where the freezing evaporator 3 is located, the flow path and the action area of the refrigerant flowing in the area where the freezing evaporator 3 is located can be increased, thereby improving the freezing efficiency of the refrigeration system 100 when used for freezing refrigeration; in the second working state of the refrigeration system 100, the refrigerant discharged from the compressor 1 flows into the refrigerating evaporator 4 after passing through the auxiliary pipe 5; in this process, the auxiliary pipe 5 can exchange heat with the refrigerant in the auxiliary pipe 5 by using the low-temperature environment in the area where the freezing evaporator 3 is located; in this way, on the one hand, the freezing evaporator 3 can be defrosted, and on the other hand, the refrigerating evaporator 4 can be supplied with refrigerant and refrigeration can be achieved, thereby reducing the working energy consumption of the compressor 1.

[0045] In an embodiment, the freezing evaporator 3 comprises fins (not shown in the figure), and the auxiliary pipe 5 is connected to the fins in a clamping manner; in this way, the auxiliary pipe 5 can be conveniently assembled to the freezing evaporator 3. Herein, the fins of the freezing evaporator 3 are provided with grooves (not shown in the figure), and the auxiliary pipe 5 is specifically clamped to the grooves of the fins. It should be noted that the part of the auxiliary pipe 5 clamped to the fins of the freezing evaporator 3 in this embodiment is configured in a back-and-forth bending structure to prolong the length of the part of the auxiliary pipe 5 located on the freezing evaporator 3; as for how the auxiliary pipe 5 is bent on the fins of the freezing evaporator 3, it can be specifically arranged according to the requirements of use, which will not be described here.

[0046] Further, the freezing evaporator 3 comprises a freezing refrigerant main pipe (not shown in the figure), the inner diameter of the freezing refrigerant main pipe is set as D1, the inner diameter of the auxiliary pipe 5 is set as D2, and D1>D2. Here, 6.7mm≥D1≥5mm, 5mm≥D2≥3mm, specifically, the inner diameter of the freezing refrigerant main pipe is D1=6.7mm, the wall thickness is δ1=0.5mm, the inner diameter of the auxiliary pipe 5 is D2=3mm, and the wall thickness is δ2=0.5mm. That is, the inner diameter of the auxiliary pipe 5 in this embodiment is smaller than the inner diameter of the freezing refrigerant main pipe, so that the auxiliary pipe 5 does not need to occupy a large assembly space when arranged on the freezing evaporator 3, and the auxiliary pipe 5 is facilitated to be clamped to the freezing evaporator 3.

[0047] As shown in Figure 2 , the refrigeration system 100 further has a third working state; in the third working state, the compressor 1, the condenser 2 and the refrigeration evaporator 4 are sequentially communicated and form a third circulation loop 103, so that the refrigeration evaporator 4 can be refrigerated through the third circulation loop 103. Here, the third working state of the refrigeration system 100 described above specifically refers to the working state of the refrigeration system 100 when used for refrigeration.

[0048] As shown in Figure 3 , the condenser 2 and the refrigeration evaporator 4 form a fifth passage 111 therebetween, and the condenser 2 and the freezing evaporator 3 form a sixth passage 112 therebetween; the third electromagnetic valve 121 is connected and communicated on the outlet of the condenser 2, and the fifth passage 111 and the sixth passage 112 can be switched under the control of the third electromagnetic valve 121. The drying filter 8 is arranged between the condenser 2 and the third electromagnetic valve 121, for adsorbing water molecules in the refrigerant, thereby effectively preventing the occurrence of ice blockage phenomenon, and the capillary is communicated on the fifth passage 111 and the sixth passage 112, for cooperating with the heat exchange of the main pipe.

[0049] In an embodiment, the auxiliary pipe 5 has an inlet end, and the three-way pipe 6 is connected and communicated on the inlet end, and the auxiliary pipe 5 can be connected and communicated with the compressor 1 and the freezing evaporator 3 through the three-way pipe 6; the first one-way valve 131 is arranged on the connecting passage between the freezing evaporator 3 and the three-way pipe 6, for controlling the one-way conduction of the freezing evaporator 3 and the auxiliary pipe 5; the second one-way valve 132 is arranged on the connecting passage between the auxiliary pipe 5 and the compressor 1, for controlling the one-way conduction of the compressor 1 and the auxiliary pipe 5. In this way, when the refrigeration system 100 is in the first working state, the refrigerant flows into the auxiliary pipe 5 after passing through the freezing evaporator 3, thereby increasing the action area of the refrigerant in the area where the freezing evaporator 3 is located.

[0050] Furthermore, a first passage 113 is formed between the auxiliary pipe 5 and the compressor 1, and a second passage 114 is formed between the auxiliary pipe 5 and the condenser 2. The auxiliary pipe 5 has an outlet end, and a first solenoid valve 122 is connected and communicated with the outlet end. The first passage 113 and the second passage 114 can be switched under the control of the first solenoid valve 122. A third one-way valve 133 is provided on the second passage 114 to control the one-way flow between the auxiliary pipe 5 and the condenser 2. When the refrigeration system 100 is in the second working state, the auxiliary pipe 5 and the refrigeration evaporator 4 are connected in series by the control of the first solenoid valve 122. The refrigerant in the auxiliary pipe 5 is used to defrost the refrigeration evaporator 3, and then enters the refrigeration evaporator 4 for refrigeration through the condenser 2.

[0051] like Figure 4 As shown, the compressor 1 has an exhaust port (not shown) and a second solenoid valve 123 is connected and communicated with the exhaust port. A third passage 115 is formed between the second solenoid valve 123 and the auxiliary pipe 5, and a fourth passage 116 is formed between the second solenoid valve 123 and the condenser 2. Furthermore, the third passage 115 and the fourth passage 116 can be switched under the control of the second solenoid valve 123.

[0052] In one embodiment, a return gas main pipe 7 is connected and communicated with the compressor 1, and the auxiliary pipe 5 and the refrigerated evaporator 4 are connected in parallel to the return gas main pipe 7. This allows the refrigerant in the auxiliary pipe 5 and the refrigerated evaporator 4 to flow back to the compressor 1 through the return gas main pipe 7 when the refrigeration system 100 is operating. Here, capillary tubes are connected to the fifth passage 111 and the sixth passage 112, and these capillary tubes are symmetrically arranged on both sides of the return gas main pipe 7. Heat exchange between the capillary tubes and the return gas main pipe 7 achieves the purpose of heat exchange through return gas.

[0053] In addition, this application also claims protection for a refrigerator, including a refrigeration system 100 as described in any of the above embodiments.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A refrigeration system characterized by, The refrigeration system comprises a compressor (1), a condenser (2), a freezing evaporator (3), a refrigerating evaporator (4) and an auxiliary pipe (5), wherein the auxiliary pipe (5) is arranged at least partially in the area of the freezing evaporator (3) and is connected in series with the freezing evaporator (3); The refrigeration system has a first working state and a second working state; In the first working state, the compressor (1), the condenser (2), the freezing evaporator (3) and the auxiliary pipe (5) are connected in sequence and form a first circulation loop (101); In the second working state, the compressor (1), the auxiliary pipe (5), the condenser (2) and the refrigerating evaporator (4) are connected in sequence and form a second circulation loop (102).

2. The refrigeration system of claim 1, wherein, The auxiliary pipe (5) has an inlet end, and a three-way pipe (6) is connected to and communicates with the auxiliary pipe (5) at the position of the inlet end, so that the auxiliary pipe (5) can be connected to and communicate with the compressor (1) and the freezing evaporator (3) through the three-way pipe (6); A first one-way valve (131) is arranged on the connecting passage between the freezing evaporator (3) and the three-way pipe (6) to control the one-way conduction between the freezing evaporator (3) and the auxiliary pipe (5); A second one-way valve (132) is arranged on the connecting passage between the auxiliary pipe (5) and the compressor (1) to control the one-way conduction between the compressor (1) and the auxiliary pipe (5).

3. The refrigeration system of claim 1, wherein, A first passage (113) is formed between the auxiliary pipe (5) and the compressor (1), and a second passage (114) is formed between the auxiliary pipe (5) and the condenser (2); The auxiliary pipe (5) has an outlet end, and a first electromagnetic valve (122) is connected to and communicates with the auxiliary pipe (5) at the position of the outlet end, and the first passage (113) and the second passage (114) can be switched under the control of the first electromagnetic valve (122); A third one-way valve (133) is arranged on the second passage (114) to control the one-way conduction between the auxiliary pipe (5) and the condenser (2).

4. The refrigeration system of claim 1, wherein, The freezing evaporator (3) comprises fins, and the auxiliary pipe (5) is connected to the fins in a clamping manner.

5. The refrigeration system of claim 1 or 4, wherein, The freezing evaporator (3) comprises a freezing refrigeration main pipe, the pipe diameter of the freezing refrigeration main pipe is set as D1, and the pipe diameter of the auxiliary pipe (5) is set as D2, wherein D1>D2.

6. The refrigeration system of claim 1, wherein, The compressor (1) has a discharge port, and a second electromagnetic valve (123) is connected to and communicates with the compressor (1) at the position of the discharge port; A third passage (115) is formed between the second electromagnetic valve (123) and the auxiliary pipe (5), and a fourth passage (116) is formed between the second electromagnetic valve (123) and the condenser (2), and the third passage (115) and the fourth passage (116) can be switched under the control of the second electromagnetic valve (123).

7. The refrigeration system of claim 1 wherein, A fifth passage (111) is formed between the condenser (2) and the refrigeration evaporator (4), and a sixth passage (112) is formed between the condenser (2) and the freezing evaporator (3); A third electromagnetic valve (121) is connected to and communicated with the outlet of the condenser (2), and the fifth passage (111) and the sixth passage (112) can be switched under the control of the third electromagnetic valve (121).

8. The refrigeration system of claim 1, wherein, The refrigeration system has a third working state; In the third working state, the compressor (1), the condenser (2) and the refrigeration evaporator (4) are sequentially communicated and form a third circulation loop (103).

9. The refrigeration system of claim 1 wherein, A return gas main pipe (7) is connected to and communicated with the compressor (1), and the auxiliary pipe (5) and the refrigeration evaporator (4) are communicated with the return gas main pipe (7) in parallel.

10. A refrigerator characterized by comprising: The refrigeration system comprises any one of claims 1-9.

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