Hot fluorine defrosting system

Abstract

The utility model discloses a hot fluorine defrosting system which comprises a refrigerating loop and a defrosting loop, and the refrigerating loop is formed by sequentially connecting a compressor, a condenser, a first splitter, a drying filter, a capillary tube, a second splitter and an evaporator. The defrosting loop is formed by sequentially connecting a compressor, a condenser, a first splitter, an electromagnetic valve, a second splitter and an evaporator, the surface of the evaporator can be frosted after a certain time, when the defrosting loop needs to work, the electromagnetic valve is opened, a refrigerant sequentially passes through the condenser, the first splitter, the electromagnetic valve, the second splitter and the evaporator, and the refrigerant is cooled to the room temperature. High-temperature gas firstly passes through the condenser to be primarily cooled and then enters the evaporator to be defrosted, refrigerant actually entering the evaporator to be defrosted is medium-high-temperature liquid, effective defrosting can be achieved, meanwhile, the influence on the temperature in the cabinet freezer is small, and normal use of the cabinet freezer is guaranteed. And the influence on food in the cabinet freezer is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of defrosting, and particularly relates to a hot fluorination defrosting system. Background Art

[0002] The refrigeration methods of freezers in the existing market are roughly divided into two types. One is the refrigeration method with only the evaporation coil wound around the inner tank. For defrosting the inner tank in this method, manual tools are required, which affects the defrosting effect and requires a large amount of labor. The other is the refrigeration method with a finned evaporator in the cabinet. When defrosting, a heating pipe needs to be added under the evaporator for defrosting. The disadvantages of this method are that the defrosting time is long, the power consumption is large, it is not energy-saving, and at the same time, the temperature in the freezer rises greatly during defrosting, and the temperature fluctuation in the cabinet is large. Content of the Utility Model

[0003] The utility model provides a hot fluorination defrosting system to overcome the deficiencies in the prior art, aiming to solve the problems in the prior art that manual or heating pipe defrosting is required and the temperature in the freezer fluctuates greatly during defrosting.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A hot fluorination defrosting system, comprising:

[0006] A refrigeration circuit, which is formed by sequentially connecting a compressor, a condenser, a first splitter, a drying filter, a capillary tube, a second splitter and an evaporator into a loop;

[0007] A defrosting circuit, which is formed by sequentially connecting a compressor, a condenser, a first splitter, a solenoid valve, a second splitter and an evaporator into a loop.

[0008] In a preferred embodiment of the utility model, the evaporator comprises a first evaporator, a second evaporator and a third evaporator, and the first evaporator, the second evaporator and the third evaporator are sequentially arranged along the refrigerant passing direction.

[0009] In a preferred embodiment of the utility model, the first evaporator, the second evaporator and the third evaporator are all coil evaporators.

[0010] In a preferred embodiment of the utility model, the drying filter is a double-tail drying filter.

[0011] In a preferred embodiment of the utility model, the solenoid valve is located on the pipeline between the first splitter and the second splitter.

[0012] The beneficial effects of the utility model are:

[0013] 1. When defrosting with the defrosting circuit designed by the present utility model, the solenoid valve is opened, and the refrigerant sequentially passes through the condenser, the first branch, the solenoid valve, the second branch, and the evaporator, thereby melting the frost on the evaporator. The high-temperature gas is first preliminarily cooled by the condenser and then enters the evaporator for defrosting. The refrigerant actually entering the evaporator for defrosting is a medium-high temperature liquid, which can effectively defrost while having little impact on the temperature inside the freezer, ensuring the normal use of the freezer and avoiding affecting the food inside the freezer.

[0014] 2. When defrosting with the defrosting circuit designed by the present utility model, high-temperature and high-pressure refrigerant is not used, and there is no need to install heating devices such as heating tubes in the freezer, nor is manual defrosting required. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a hot gas defrosting system provided by an embodiment of the present utility model;

[0016] Reference numerals in the drawings; wherein, 1 - refrigeration circuit; 101 - compressor; 102 - condenser; 103 - first branch; 104 - dryer filter; 105 - capillary tube; 106 - second branch; 107 - evaporator; 2 - defrosting circuit; 201 - solenoid valve. Detailed Embodiments

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the present utility model in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures in the drawings is only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model.

[0018] Embodiment:

[0019] As Figure 1 shown, this embodiment provides a hot gas defrosting system, including:

[0020] A refrigeration circuit 1, which is formed by sequentially connecting a compressor 101, a condenser 102, a first branch 103, a dryer filter 104, a capillary tube 105, a second branch 106, and an evaporator 107 into a circuit;

[0021] A defrosting circuit 2, which is formed by sequentially connecting a compressor 101, a condenser 102, a first branch 103, a solenoid valve 201, a second branch 106, and an evaporator 107 into a circuit.

[0022] Specifically, the defrosting circuit 2 includes a condenser 102. After the high-temperature and high-pressure gas passes through the condenser 102, it becomes a medium-high temperature liquid. Compared with directly using the high-temperature and high-pressure gas to enter the evaporator 107 for defrosting, using the medium-high temperature liquid to enter the evaporator 107 for defrosting has less impact on the temperature inside the freezer, avoiding large fluctuations in the internal stability of the freezer and ensuring that the freezer can still be used normally during the defrosting process.

[0023] In this embodiment, the evaporator 107 includes a first evaporator, a second evaporator, and a third evaporator, which are arranged in sequence along the refrigerant passing direction.

[0024] In this embodiment, the first evaporator, the second evaporator, and the third evaporator are all coil evaporators.

[0025] Specifically, the three evaporators 107 are arranged in series or in parallel. When the three evaporators 107 are arranged in series, they are connected in sequence. When the three evaporators 107 are arranged in parallel, the three first evaporators are arranged side by side in an E shape.

[0026] In this embodiment, the drying filter 104 is a double-tail drying filter.

[0027] In this embodiment, the solenoid valve 201 is located on the pipeline between the first brancher 103 and the second brancher 106.

[0028] Specifically, when the solenoid valve 201 is closed, the refrigeration circuit 1 works. When the solenoid valve 201 is opened, the defrosting circuit 2 works. Under the resistance of the capillary 105, less refrigerant enters the refrigeration circuit 1.

[0029] Specifically, the working principle of this hot gas defrosting system:

[0030] During refrigeration, the refrigeration circuit 1 works. At this time, the solenoid valve 201 is in the closed state. The refrigerant becomes a high-temperature and high-pressure gas under the action of the compressor 101, enters the condenser 102 to dissipate heat and becomes a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid refrigerant enters the drying filter 104 through the first brancher 103, is throttled and depressurized by the capillary 105, and enters the evaporator 107 through the second brancher 106 for evaporation and heat absorption to produce a refrigeration effect. After a certain period of time, the surface of the evaporator 107 will be covered with frost.

[0031] During defrosting, the defrosting circuit 2 operates, opening the solenoid valve 201. The refrigerant becomes high-temperature and high-pressure gas under the action of the compressor 101 and enters the condenser 102 to dissipate heat and turn into medium-temperature and high-pressure liquid. Due to the resistance of the capillary tube 105 in the refrigeration circuit 1, the refrigerant flowing through the refrigeration circuit 1 is negligible. The medium-temperature and high-pressure liquid refrigerant sequentially passes through the first distributor 103, the solenoid valve 201, and the second distributor 106 and enters the evaporator 107 for defrosting. When the medium-temperature and high-pressure liquid refrigerant enters the evaporator 107, it can effectively defrost while having little impact on the temperature inside the freezer, ensuring the normal use of the freezer and avoiding affecting the food inside the freezer.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A thermal fluorination defrosting system, characterized in that: include: A refrigeration circuit (1), wherein the refrigeration circuit (1) is connected in sequence to form a circuit including a compressor (101), a condenser (102), a first branching device (103), a drying filter (104), a capillary tube (105), a second branching device (106) and an evaporator (107); The defrost circuit (2) is composed of a compressor (101), a condenser (102), a first branch (103), a solenoid valve (201), a second branch (106) and an evaporator (107) which are connected in sequence to form a circuit.

2. A thermal fluorination defrosting system according to claim 1, characterized in that: The evaporator (107) comprises a first evaporator, a second evaporator and a third evaporator, wherein the first evaporator, the second evaporator and the third evaporator are arranged in sequence along the direction in which the refrigerant passes.

3. A thermal fluorination defrosting system according to claim 2, characterized in that: The first evaporator, the second evaporator and the third evaporator are all coil evaporators.

4. A thermal fluorination defrosting system according to claim 1, characterized in that: The drying filter (104) is a double-tail drying filter.

5. A thermal fluorination defrosting system according to claim 1, characterized in that: The solenoid valve (201) is located on the pipeline between the first branch (103) and the second branch (106).

Images