CN220152974U - Refrigerating system with defrosting function - Google Patents
Refrigerating system with defrosting function Download PDFInfo
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- CN220152974U CN220152974U CN202321446572.3U CN202321446572U CN220152974U CN 220152974 U CN220152974 U CN 220152974U CN 202321446572 U CN202321446572 U CN 202321446572U CN 220152974 U CN220152974 U CN 220152974U
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- control valve
- gas
- compressor
- liquid separation
- separation device
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- 238000010257 thawing Methods 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000000926 separation method Methods 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims description 25
- 239000003507 refrigerant Substances 0.000 description 37
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Defrosting Systems (AREA)
Abstract
The utility model discloses a refrigerating system with a defrosting function, which comprises a compressor, a condenser, an evaporator, a first throttling structure, a first control valve and a gas-liquid separation device, wherein an outlet of the compressor, the condenser, the first throttling structure, the evaporator, the gas-liquid separation device and an inlet of the compressor are sequentially connected to form a refrigerating loop, the outlet of the compressor, the first control valve, the evaporator, the gas-liquid separation device and the inlet of the compressor are sequentially connected to form a defrosting loop, the first control valve can control the on-off of the defrosting loop, and the gas-liquid separation device is provided with a heating device. The refrigerating system provided by the utility model can effectively avoid the phenomenon of liquid impact when defrosting the evaporator, improve the defrosting efficiency and reduce the defrosting time.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a refrigeration system with a defrosting function.
Background
The refrigerating system used by the existing refrigerator generally comprises a compressor, a condenser, an evaporator, a throttling structure, an electromagnetic valve and other components, wherein an outlet of the compressor, the condenser, the evaporator, the throttling structure and an inlet of the compressor are sequentially connected to form a refrigerating circuit, the outlet of the compressor, the electromagnetic valve, the evaporator and the inlet of the compressor are sequentially connected to form a defrosting circuit, when the refrigerating system refrigerates, the electromagnetic valve is closed, at the moment, refrigerant circulates in the refrigerating circuit, when the refrigerating system needs to defrost the evaporator, the electromagnetic valve is opened, at the moment, the refrigerant can circulate in the defrosting circuit, high-temperature refrigerant gas discharged by the outlet of the compressor enters the evaporator to absorb heat, so that frost in the evaporator is melted, and defrosting is realized. However, when such a refrigeration system is defrosted, heat of the refrigerant gas is largely absorbed by frost in the evaporator to become a part or all of the refrigerant liquid, and then the refrigerant liquid is sucked into the compressor, which is liable to cause liquid impact to the compressor, and in addition, the refrigerant gas re-sucked at the inlet of the compressor becomes small, resulting in a decrease in high-temperature refrigerant gas discharged at the outlet of the compressor later, so that the refrigeration system is low in defrosting efficiency and long in defrosting time.
Disclosure of Invention
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 with a defrosting function, which can effectively avoid the phenomenon of liquid impact when defrosting an evaporator, improve the defrosting efficiency and reduce the defrosting time.
According to the embodiment of the utility model, the refrigerating system with the defrosting function comprises a compressor, a condenser, an evaporator, a first throttling structure, a first control valve and a gas-liquid separation device, wherein an outlet of the compressor, the condenser, the first throttling structure, the evaporator, the gas-liquid separation device and an inlet of the compressor are sequentially connected to form a refrigerating circuit, the outlet of the compressor, the first control valve, the evaporator, the gas-liquid separation device and the inlet of the compressor are sequentially connected to form a defrosting circuit, the first control valve can control the on-off of the defrosting circuit, and the gas-liquid separation device is provided with a heating device.
The refrigerating system with defrosting function according to the embodiment of the utility model has at least the following beneficial effects: according to the refrigerating system with the defrosting function, the first control valve is closed when refrigerating, the first control valve is opened when defrosting the evaporator, and the heating device works, wherein in the defrosting process of the evaporator, the refrigerant discharged from the evaporator enters the gas-liquid separation device, in the gas-liquid separation device, the refrigerant liquid is temporarily stored in the gas-liquid separation device, the refrigerant gas is re-inhaled by the inlet of the compressor, so that the phenomenon of liquid impact caused by the fact that the refrigerant liquid is inhaled by the inlet of the compressor can be avoided, meanwhile, the heating device can heat the refrigerant liquid in the gas-liquid separation device, the refrigerant liquid in the gas-liquid separation device is enabled to be changed into the refrigerant gas more quickly, so that more refrigerant gas can be inhaled by the inlet of the compressor, the temperature of the refrigerant gas inhaled by the compressor can be increased by the heating device, and therefore, more high-temperature refrigerant gas can be discharged by the outlet of the compressor, the temperature of the discharged high-temperature refrigerant gas is higher, the defrosting efficiency is improved, and the defrosting time is shortened.
According to some embodiments of the utility model, the refrigerating circuit comprises a first throttling structure and a first control valve for controlling the on-off of the refrigerating circuit, wherein a first port of the evaporator is connected with the first control valve and an outlet of the condenser, a second port of the evaporator, the first control valve and an inlet of the gas-liquid separation device are sequentially connected, and the second port of the evaporator, the first throttling structure and the inlet of the gas-liquid separation device are sequentially connected.
According to some embodiments of the utility model, the first control valve is a normally closed shut-off valve.
According to some embodiments of the utility model, the second control valve is a normally open shut-off valve.
According to some embodiments of the utility model, the first throttling arrangement is provided as a capillary tube or an expansion valve and the second throttling arrangement is provided as a capillary tube or an expansion valve.
According to some embodiments of the utility model, the heating device is arranged as a heating tube sleeved on the periphery of the gas-liquid separation device.
According to some embodiments of the utility model, the outlet of the compressor, the interface at one end of the first control valve and the inlet of the condenser are connected by a first three-way joint, and the interface at the other end of the first control valve, the inlet of the evaporator and the outlet of the first throttling structure are connected by a second three-way joint.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic diagram of a refrigeration system with defrosting function according to an embodiment of the present utility model.
Reference numerals:
a compressor 1, a condenser 2, an evaporator 3, a first throttling structure 4, a first control valve 5, a gas-liquid separation device 6, a heating device 7, a second control valve 8, a second throttling structure 9, a first three-way joint 10 and a second three-way joint 11.
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 references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, a refrigeration system with a defrosting function according to an embodiment of the present utility model includes a compressor 1, a condenser 2, an evaporator 3, a first throttling structure 4, a first control valve 5, and a gas-liquid separation device 6, wherein an outlet of the compressor 1, the condenser 2, the first throttling structure 4, the evaporator 3, the gas-liquid separation device 6, and an inlet of the compressor 1 are sequentially connected to form a refrigeration circuit, an outlet of the compressor 1, the first control valve 5, the evaporator 3, the gas-liquid separation device 6, and an inlet of the compressor 1 are sequentially connected to form a defrosting circuit, wherein the first control valve 5 can control on-off of the defrosting circuit, and the gas-liquid separation device 6 is configured with a heating device 7.
According to the refrigerating system with the defrosting function, the first control valve 5 is closed when refrigerating is performed, the refrigerant circulates in the refrigerating loop, the first control valve 5 is opened when defrosting the evaporator 3, the heating device 7 works, and the refrigerant circulates in the defrosting loop, wherein during defrosting the evaporator 3, the refrigerant discharged from the evaporator 3 enters the gas-liquid separation device 6, in the gas-liquid separation device 6, the refrigerant liquid is temporarily stored in the gas-liquid separation device 6, the refrigerant gas is re-inhaled by the inlet of the compressor 1, the phenomenon that the refrigerant liquid is sucked by the inlet of the compressor 1 to cause liquid impact can be avoided, meanwhile, the heating device 7 can heat the refrigerant liquid in the gas-liquid separation device 6, so that the refrigerant liquid in the gas-liquid separation device 6 is changed into the refrigerant gas more quickly, the inlet of the compressor 1 can suck more refrigerant gas, the heating device 7 can also improve the temperature of the refrigerant gas sucked by the compressor 1, therefore, the outlet of the compressor 1 can discharge more high-temperature refrigerant gas, the high-temperature gas is discharged by the inlet of the refrigerator is more high-temperature, the refrigerator is more efficient, the defrosting time is prolonged, and the defrosting time is avoided.
Referring to fig. 1, it is conceivable that in some embodiments, the above-mentioned refrigeration system includes a second throttling structure 9 and a second control valve 8 for controlling on/off of the refrigeration circuit, the first port of the evaporator 3 is communicated with the first control valve 5 and the outlet of the condenser 2, the second port of the evaporator 3, the second control valve 8 and the inlet of the gas-liquid separation device 6 are sequentially connected, and then the second port of the evaporator 3, the second throttling structure 9 and the inlet of the gas-liquid separation device 6 are sequentially connected, so that the outlet of the compressor 1, the condenser 2, the first throttling structure 4, the evaporator 3, the second control valve 8, the gas-liquid separation device 6 and the inlet of the compressor 1 are sequentially connected to form the refrigeration circuit, and the outlet of the compressor 1, the first control valve 5, the evaporator 3, the second throttling structure 9, the gas-liquid separation device 6 and the inlet of the compressor 1 are sequentially connected to form the defrost circuit. The present utility model provides a refrigeration system in which a first control valve 5 is closed and a second control valve 8 is opened when refrigeration is performed, so that a refrigerant circulates in a refrigeration circuit, and the first control valve 5 is opened and the second control valve 8 is closed when defrosting an evaporator 3, so that the refrigerant circulates in a defrosting circuit. With the above arrangement, the second throttling structure 9 can throttle the refrigerant discharged from the evaporator 3 during defrosting of the evaporator 3, so that the pressure of the refrigerant liquid entering the gas-liquid separation device 6 is reduced to the evaporating pressure, and the speed of converting the refrigerant liquid in the gas-liquid separation device 6 into the refrigerant gas is increased.
Referring to fig. 1, it is conceivable that in some embodiments, the first control valve 5 is a normally closed shut-off valve, so that the first control valve 5 does not need to be actuated when the refrigeration system is refrigerating, simplifying control.
Referring to fig. 1, it is conceivable that in some embodiments, the second control valve 8 is a normally open shut-off valve, so that the second control valve 8 does not need to be actuated when the refrigeration system is refrigerating, simplifying control. Through the arrangement of the normally closed stop valve and the normally open stop valve, when the refrigerating system is switched between the refrigerating mode and the defrosting mode, the compressor 1 can be stopped, so that the refrigerating mode and the defrosting mode can be switched seamlessly.
It should be noted that, in other embodiments, the first control valve 5 may be configured as an on-off valve, and the second control valve 8 may be configured as an on-off valve.
Referring to fig. 1, it is conceivable that in some embodiments the first restriction 4 is provided as a capillary tube or an expansion valve and the second restriction 9 is provided as a capillary tube or an expansion valve.
Referring to fig. 1, it is conceivable that in some embodiments, the heating device 7 is configured as a heating tube sleeved on the periphery of the gas-liquid separation device 6, so that the heating device 7 can be conveniently added to the existing common gas-liquid separator, and the heating device 7 can be conveniently replaced and maintained. Furthermore, if the heating pipe fails, the heating device 7 can be replaced and maintained without stopping the compressor 1 even if the refrigeration system is in the cooling mode.
It should be noted that, in other embodiments, the heating device 7 may be disposed in other manners, for example, the heating device 7 may be disposed as a heating tube inserted into the gas-liquid separator.
With reference to fig. 1, it is conceivable that in some embodiments, the outlet of the compressor 1, the interface at one end of the first control valve 5 and the inlet of the condenser 2 are connected by a first three-way joint 10, and the interface at the other end of the first control valve 5, the inlet of the evaporator 3 and the outlet of the first throttling structure 4 are connected by a second three-way joint 11, with which the piping of the refrigeration system can be simplified.
It should be noted that, in other embodiments, the defrosting circuit may be connected by other pipelines, for example, the first port of the evaporator 3 is connected to the outlet of the condenser 2, the second port of the evaporator 3 is connected to the first control valve 5, and the first port of the evaporator 3, the second control valve 8, the second throttling structure 9, and the inlet of the gas-liquid separation device 6 are sequentially connected.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.
Claims (7)
1. The utility model provides a refrigerating system with defrosting function, its characterized in that includes compressor (1), condenser (2), evaporimeter (3), first throttle structure (4), first control valve (5) and gas-liquid separation device (6), the export of compressor (1) condenser (2) first throttle structure (4) evaporimeter (3), gas-liquid separation device (6) and the entry of compressor (1) connect gradually and form the refrigeration circuit, the export of compressor (1) first control valve (5) evaporimeter (3) gas-liquid separation device (6) and the entry of compressor (1) connects gradually and forms the defrosting circuit, wherein, first control valve (5) can control the break-make of defrosting circuit, gas-liquid separation device (6) are furnished with heating device (7).
2. The refrigeration system with defrosting function according to claim 1, comprising a second throttling structure (9) and a second control valve (8) for controlling on-off of the refrigeration loop, wherein a first interface of the evaporator (3) is connected with the first control valve (5) and an outlet of the condenser (2), a second interface of the evaporator (3), the second control valve (8) and an inlet of the gas-liquid separation device (6) are sequentially connected, and a second interface of the evaporator (3), the second throttling structure (9) and an inlet of the gas-liquid separation device (6) are sequentially connected.
3. A refrigeration system with defrost function according to claim 2, wherein the first control valve (5) is a normally closed shut-off valve.
4. A refrigeration system with defrost function according to claim 3, characterized in that the second control valve (8) is a normally open shut-off valve.
5. A refrigeration system with defrost function according to claim 2, characterized in that the first throttle structure (4) is provided as a capillary tube or an expansion valve and the second throttle structure (9) is provided as a capillary tube or an expansion valve.
6. A refrigeration system with defrost function according to claim 1, characterized in that the heating means (7) is arranged as a heating tube which is fitted around the outer periphery of the gas-liquid separation device (6).
7. A refrigeration system with defrost function according to claim 1, characterized in that the outlet of the compressor (1), the interface of one end of the first control valve (5) and the inlet of the condenser (2) are connected by a first three-way connection (10), the interface of the other end of the first control valve (5), the inlet of the evaporator (3) and the outlet of the first throttle structure (4) are connected by a second three-way connection (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446572.3U CN220152974U (en) | 2023-06-07 | 2023-06-07 | Refrigerating system with defrosting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446572.3U CN220152974U (en) | 2023-06-07 | 2023-06-07 | Refrigerating system with defrosting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220152974U true CN220152974U (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321446572.3U Active CN220152974U (en) | 2023-06-07 | 2023-06-07 | Refrigerating system with defrosting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220152974U (en) |
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2023
- 2023-06-07 CN CN202321446572.3U patent/CN220152974U/en active Active
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