Guide mechanism of refrigerating and freezing hot fluorine defrosting unit

Abstract

The utility model discloses a guide mechanism of a refrigerating and freezing hot fluorine defrosting unit, which comprises a circulation main body, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger and a heat exchanger, wherein the circulation main body comprises evaporators, condensers, compressors and four-way valves; the one-way control unit comprises a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve which are respectively arranged on different pipelines of the circulating main body and are used for controlling the flow direction of the refrigerant; the auxiliary assembly comprises a liquid storage device, an expansion valve, an electromagnetic valve, a liquid viewing mirror and a filter and is used for adjusting the flow of the refrigerant, purifying the refrigerant and controlling the on-off of the system; and the gas-liquid separator is connected with the compressor and the four-way valve and is used for separating gas and liquid in the refrigerant. The working efficiency and the stability of the refrigerating and freezing equipment can be improved by optimizing the flow direction of refrigerants and the pipeline configuration.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field especially is related to a refrigeration and freezing hot fluorine defrosting unit's guide mechanism. BACKGROUND

[0002] Refrigeration and freezing equipment, such as cold storage, refrigerator, air conditioner etc., plays a vital role in modern life, they not only guarantee the freshness and safety of food, also provide people with comfortable living environment. In these equipment, hot fluorine defrosting technology becomes the first choice of many refrigeration and freezing equipment manufacturers with its efficient, reliable defrosting performance.

[0003] However, although hot fluorine defrosting technology has many advantages, but the guide assembly design in prior art has many deficiencies. First, the flow of refrigerant is unreasonable, resulting in energy loss in the refrigeration and defrosting process, reduces the energy efficiency of equipment. Secondly, the pipeline design is complex, not only increases the manufacturing cost, also improves the difficulty of later maintenance. In addition, due to unreasonable guide assembly design, it may also cause unnecessary pressure fluctuation of refrigerant in the circulation process, affect the stability and service life of equipment.

[0004] Therefore, how to design a guide assembly with reasonable structure, optimized refrigerant flow, simple pipeline and high energy efficiency has become a technical problem to be solved in the current refrigeration and freezing equipment field. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a refrigeration and freezing hot fluorine defrosting unit's guide mechanism, can improve the working efficiency and stability of refrigeration and freezing equipment by optimizing the flow of refrigerant and pipeline configuration.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] A refrigeration and freezing hot fluorine defrosting unit's guide mechanism, comprising:

[0008] Circulation main body, including evaporator, condenser, compressor and four-way valve, forms the basic framework of refrigeration cycle;

[0009] One-way control unit, including first one-way valve, second one-way valve, third one-way valve and fourth one-way valve, is arranged on different pipelines of circulation main body respectively, is used to control the flow of refrigerant;

[0010] Auxiliary assembly, including liquid accumulator, expansion valve, solenoid valve, sight glass and filter, is used to adjust refrigerant flow, purify refrigerant and control system on-off;

[0011] Gas-liquid separator is connected with the compressor and the four-way valve, is used to separate gas and liquid in refrigerant.

[0012] Preferably, the first one-way valve is arranged between the evaporator and the expansion valve, allowing refrigerant to flow from the expansion valve to the evaporator.

[0013] Preferably, one end of the second one-way valve is connected to a pipeline between the expansion valve and the first one-way valve, and the other end is connected to a pipeline between the condenser and the fourth one-way valve.

[0014] Preferably, one end of the third one-way valve is connected to a pipeline between the fourth one-way valve and the reservoir, and the other end is connected to a pipeline between the evaporator and the first one-way valve.

[0015] Preferably, the fourth one-way valve is arranged between the condenser and the reservoir and is fixedly connected to and communicates with both.

[0016] Preferably, the electromagnetic valve is arranged between the expansion valve and the sight glass for controlling the on-off of the system.

[0017] Preferably, the filter is arranged between the sight glass and the reservoir for purifying the refrigerant.

[0018] Preferably, one end of the gas-liquid separator communicates with the inlet of the compressor, and the other end communicates with a corresponding port of the four-way valve.

[0019] Compared with the prior art, the utility model has the following advantages and technical effects:

[0020] The utility model discloses a one-way control unit can control the flow direction of refrigerant in the whole system, realizes the function exchange of evaporator and condenser, can realize the refrigeration of the space used by refrigerant, and can also realize the removal of frost on the evaporator by the reverse evaporation of refrigerant. At the same time, during the function switching of evaporator and condenser, the expansion valve can reduce the pressure of refrigerant, which can improve the suction pressure of the compressor, improve the refrigeration efficiency of the compressor, and also make the refrigerant better phase change in the evaporator and condenser, improve the defrosting and refrigeration effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings, and their specification, are included to explain the application and are not meant to limit the application. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Wherein, 11, evaporator; 12, condenser; 13, compressor; 14, four-way valve; 21, first check valve; 22, second check valve; 23, third check valve; 24, fourth check valve; 31, liquid accumulator; 32, expansion valve; 33, solenoid valve; 34, sight glass; 35, filter; 4, gas-liquid separator; 5, oil separator. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] It should be noted that all components in the technical solutions of the present application need additional facilities for driving or / and controlling, such as water supply, oil supply, power supply, and gas supply. If not further described, it is assumed that the prior art is used and equipped, and no special description is required.

[0026] It should be noted that in order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0027] As shown in Figure 1 A guiding mechanism of a refrigeration and freezing hot fluorine defrosting unit, comprising:

[0028] A circulating main body, comprising an evaporator 11, a condenser 12, a compressor 13 and a four-way valve 14, forming a basic framework of a refrigeration cycle;

[0029] A one-way control unit, comprising a first check valve 21, a second check valve 22, a third check valve 23 and a fourth check valve 24, respectively arranged on different pipelines of the circulating main body, for controlling the flow direction of the refrigerant;

[0030] An auxiliary assembly, comprising a liquid accumulator 31, an expansion valve 32, a solenoid valve 33, a sight glass 34 and a filter 35, for adjusting the refrigerant flow, purifying the refrigerant and controlling the system on-off;

[0031] A gas-liquid separator 4 connected with the compressor 13 and the four-way valve 14, for separating gas and liquid in the refrigerant.

[0032] Further optimization scheme, the first check valve 21 is arranged between the evaporator 11 and the expansion valve 32, allowing the refrigerant to flow from the expansion valve 32 to the evaporator 11.

[0033] Further optimization scheme, one end of the second check valve 22 is connected to the pipeline between the expansion valve 32 and the first check valve 21, and the other end is connected to the pipeline between the condenser 12 and the fourth check valve 24.

[0034] Further optimization scheme, one end of the third one-way valve 23 is connected to the pipeline between the fourth one-way valve 24 and the liquid reservoir 31, and the other end is connected to the pipeline between the evaporator 11 and the first one-way valve 21.

[0035] Further optimization scheme, the fourth one-way valve 24 is arranged between the condenser 12 and the liquid reservoir 31 and is fixedly connected with the condenser 12 and the liquid reservoir 31 and communicates respectively.

[0036] Further optimization scheme, the electromagnetic valve 33 is arranged between the expansion valve 32 and the sight glass 34, and is used for controlling the on-off of the system.

[0037] Further optimization scheme, the filter 35 is arranged between the sight glass 34 and the liquid reservoir 31, and is used for purifying the refrigerant.

[0038] Further optimization scheme, one end of the gas-liquid separator 4 communicates with the inlet of the compressor 13, and the other end communicates with the corresponding port of the four-way valve 14.

[0039] Further, the communication between all components in the system is realized through the pipeline, and the pipeline is connected by copper pipe, which is convenient for adjusting the pipeline layout, can resist corrosion and improve the service life.

[0040] Further, one end of the evaporator 11 is fixedly connected with the four-way valve 14 and communicates; the other end of the evaporator 11 is fixedly connected with the first one-way valve 21 and communicates; the first one-way valve 21 is fixedly connected with the expansion valve 32 and communicates; the expansion valve 32 is fixedly connected with the electromagnetic valve 33 and communicates; the electromagnetic valve 33 is fixedly connected with the sight glass 34 and communicates; the sight glass 34 is fixedly connected with the filter 35 and communicates; one end of the filter 35 is fixedly connected with the liquid reservoir 31 and communicates; the other end of the liquid reservoir 31 is fixedly connected with the fourth one-way valve 24 and communicates; the fourth one-way valve 24 is fixedly connected with the condenser 12 and communicates; one end of the condenser 12 is fixedly connected with the four-way valve 14 and communicates; one end of the gas-liquid separator 4 is fixedly connected with the compressor 13 and communicates; the other end of the gas-liquid separator 4 is fixedly connected with the four-way valve 14 and communicates; one end of the compressor 13 is fixedly connected with the four-way valve 14 and communicates; one end of the second one-way valve 22 is fixedly connected and communicates between the first one-way valve 21 and the expansion valve 32, and the other end of the second one-way valve 22 is fixedly connected and communicates between the condenser 12 and the fourth one-way valve 24; one end of the third one-way valve 23 is fixedly connected and communicates between the fourth one-way valve 24 and the liquid reservoir 31, and the other end of the third one-way valve 23 is fixedly connected and communicates between the evaporator 11 and the first one-way valve 21; the flow direction of the first one-way valve 21 is from the expansion valve 32 to the evaporator 11, the flow direction of the second one-way valve 22 is from the expansion valve 32 to the condenser 12, the flow direction of the third one-way valve 23 is from the first one-way valve 21 to the liquid reservoir 31, and the flow direction of the fourth one-way valve 24 is from the condenser 12 to the liquid reservoir 31.

[0041] Further, an oil separator 5 is connected in series between the compressor 13 and the four-way valve 14, for filtering oil in the exhaust gas of the compressor 13, avoiding affecting subsequent components, and the separated oil can be transported to the compressor 13 for reuse, which is a prior art and will not be described here.

[0042] The working process of the embodiment is as follows:

[0043] I. Refrigeration mode:

[0044] When the utility model refrigerates, the compressor 13 exhausts, and the exhaust gas flows into the four-way valve 14 from the compressor 13, at this time, the four-way valve 14 is not powered, then the refrigerant enters the liquid inlet of the condenser 12 from the four-way valve 14, and the refrigerant flows out from the liquid outlet of the condenser 12, at this time, the refrigerant in the condenser 12 is in a high-pressure state, and the refrigerant flows out along the pipeline, at this time, because of the flow direction control of the second one-way valve 22, the third one-way valve 23 and the fourth one-way valve 24, the refrigerant can only pass through the fourth one-way valve 24 and enter the liquid inlet of the liquid accumulator 31.

[0045] After the refrigerant flows out from the liquid accumulator 31, it successively passes through the filter 35, the sight glass 34, the electromagnetic valve 33 and the expansion valve 32, at this time, the refrigerant changes from high pressure to low pressure after being depressurized by the expansion valve 32, and when the low-pressure refrigerant flows to the first one-way valve 21, it faces two passages, namely the first one-way valve 21 and the second one-way valve 22, because the end of the second one-way valve 22 close to the condenser 12 is a high-pressure area, the low-pressure refrigerant at the other end of the second one-way valve 22 cannot flow through by pushing away the restriction of the second one-way valve 22, but can only flow through the first one-way valve 21 and then enter the evaporator 11, realizing the refrigeration operation of the area where the evaporator 11 is located. The refrigerant flowing out from the evaporator 11 enters the four-way valve 14 through the pipeline, and the four-way valve 14 guides it into the gas-liquid separator 4 and finally into the compressor 13 to continue the circulation operation.

[0046] II. Defrosting mode:

[0047] When the utility model defrosts, compressor 13 exhaust, from compressor 13 flow into four-way valve 14, four-way valve 14 is energized at this time, then refrigerant will enter evaporator 11 by four-way valve 14, high pressure refrigerant passes through evaporator 11 with ice frost, will absorb the low temperature of evaporator 11 and condense high pressure refrigerant to form low pressure refrigerant, low pressure refrigerant flows out from evaporator 11, because the flow direction restriction of first check valve 21, fourth check valve 24, will directly flow into the liquid inlet of reservoir 31 by third check valve 23.And the refrigerant from reservoir 31 flows will pass through filter 35, sight glass 34, electromagnetic valve 33, expansion valve 32 in turn, flow to first check valve 21, although the refrigerant passing through evaporator 11 is changed to low pressure refrigerant, but its pressure is still higher than the side of first check valve 21 close to expansion valve 32, so, the refrigerant from reservoir 31 will not push away first check valve 21, also will not push away fourth check valve 24, and then turn to the direction of second check valve 22 flow, finally through condenser 12 into four-way valve 14, the condenser 12 of this time changes function, has the effect of evaporator, because the refrigerant from reservoir 31 is depressurized by expansion valve 32, can facilitate its more quickly gasification in condenser 12, realizes the higher suction pressure of reservoir 31 to evaporator 11, improves the overall work efficiency.After the refrigerant gasification of condenser 12 will pass through gas-liquid separator 4, finally enters compressor 13 and carries out compression again.

[0048] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of the change or replacement within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited to the protection scope of claims.

Claims

1. A guide mechanism for a refrigerating and freezing heat-fluorine defrosting unit, characterized by comprising: The application relates to a refrigeration system, which comprises the following components: a circulation main body, which comprises an evaporator (11), a condenser (12), a compressor (13) and a four-way valve (14) and forms a basic framework of a refrigeration cycle; a one-way control unit, which comprises a first one-way valve (21), a second one-way valve (22), a third one-way valve (23) and a fourth one-way valve (24) and is arranged on different pipelines of the circulation main body respectively and used for controlling the flow direction of refrigerant; an auxiliary assembly, which comprises a liquid accumulator (31), an expansion valve (32), an electromagnetic valve (33), a sight glass (34) and a filter (35) and is used for adjusting the refrigerant flow, purifying the refrigerant and controlling the on-off of the system; a gas-liquid separator (4), which is connected with the compressor (13) and the four-way valve (14) and used for separating gas and liquid in the refrigerant.

2. The guide mechanism of a refrigerating and freezing heat-fluorine frosting machine set according to claim 1, characterized in that: The first one-way valve (21) is arranged between the evaporator (11) and the expansion valve (32) and allows the refrigerant to flow from the expansion valve (32) to the evaporator (11).

3. The guide mechanism of a refrigerating and freezing heat-fluorine frosting machine set according to claim 1, characterized in that: One end of the second one-way valve (22) is connected with a pipeline between the expansion valve (32) and the first one-way valve (21), and the other end is connected with a pipeline between the condenser (12) and the fourth one-way valve (24).

4. The guide mechanism for a refrigeration-freezing hot-fluorine frosting machine set according to claim 1, characterized in that: One end of the third one-way valve (23) is connected with a pipeline between the fourth one-way valve (24) and the liquid accumulator (31), and the other end is connected with a pipeline between the evaporator (11) and the first one-way valve (21).

5. The guide mechanism for a refrigeration-freezing hot-fluorine frosting machine set according to claim 1, characterized in that: The fourth one-way valve (24) is arranged between the condenser (12) and the liquid accumulator (31) and is fixedly connected with the two components respectively and communicates with the two components.

6. The guide mechanism for a refrigeration-freezing hot-fluoride frosting unit as claimed in claim 1, wherein: The electromagnetic valve (33) is arranged between the expansion valve (32) and the sight glass (34) and is used for controlling the on-off of the system.

7. The guide mechanism for a refrigeration-freezing hot-fluoride frosting unit as claimed in claim 1, wherein: The filter (35) is arranged between the sight glass (34) and the liquid accumulator (31) and is used for purifying the refrigerant.

8. The guide mechanism for a refrigeration-freezing-heat-fluorine- frosting machine set according to claim 1, wherein: One end of the gas-liquid separator (4) communicates with the inlet of the compressor (13), and the other end communicates with a corresponding port of the four-way valve (14).

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