CN209910215U - High-temperature heat pump system - Google Patents
High-temperature heat pump system Download PDFInfo
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- CN209910215U CN209910215U CN201922154788.2U CN201922154788U CN209910215U CN 209910215 U CN209910215 U CN 209910215U CN 201922154788 U CN201922154788 U CN 201922154788U CN 209910215 U CN209910215 U CN 209910215U
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Abstract
The utility model relates to a high-temperature heat pump system, which comprises a compressor, a condenser, an economizer, a secondary throttle valve, an evaporator, a check valve, a recooler and an automatic throttle valve; a refrigerant outlet of the condenser is connected with a refrigerant inlet of the recooler, and a refrigerant outlet of the recooler is connected with a first inlet of the economizer; a first outlet of the economizer is connected with an inlet of a secondary throttling valve, an outlet of the secondary throttling valve is connected with a refrigerant inlet of the evaporator, a refrigerant outlet of the evaporator is connected with an air suction port of the compressor, and an air exhaust port of the compressor is connected with a refrigerant inlet of the condenser; the first outlet of the economizer is also connected with the inlet of an automatic throttling valve, the outlet of the automatic throttling valve is connected with the second inlet of the economizer, the second outlet of the economizer is connected with the inlet of a one-way valve, and the outlet of the one-way valve is connected with the air supplement port of the compressor. The utility model discloses can further reduce the refrigerant temperature before the choke valve, make the work of choke valve under optimum temperature, effectively improve refrigeration air conditioning system's efficiency.
Description
Technical Field
The utility model relates to an air conditioning system especially relates to a high temperature heat pump system.
Background
Refrigerating units used in the fields of industrial equipment manufacturing and heating heat exchange have higher and higher energy efficiency requirements, and in order to improve the unit energy efficiency, an economizer is often arranged on the refrigerating unit in the industry to improve the energy efficiency coefficient of the refrigerating unit.
In the prior art, as shown in fig. 1, a high-temperature and high-pressure liquid refrigerant from a condenser 6 enters a first inlet of an economizer 1, a refrigerant branch is arranged at a first outlet of the economizer 1, the refrigerant branch is throttled by a first-stage throttle valve F3' and then flashed into gas, the gas refrigerant returns to a second inlet of the economizer, the flashed gas refrigerant returning to the economizer 1 in the economizer 1 absorbs certain heat, so that the temperature of the liquid refrigerant entering the economizer 1 from the first inlet of the economizer 1 is reduced, the gas refrigerant is further cooled by a second-stage throttle valve F2 and then enters an evaporator 4 to be evaporated into gas, finally, the gas refrigerant is compressed by a compressor 5 and discharged into the condenser 6 to complete a thermal cycle, and the flashed part of the gas refrigerant enters the compressor 5 through a gas supplementing pipeline to be compressed again and then enters the condenser 6 to complete the thermal cycle.
The system can play a good role in improving energy efficiency when running in a conventional air conditioning system, but the high-temperature heat pump has defects, the temperature of a refrigerant coming out of a condenser is very high even exceeds 100 ℃ in the heating running process of the high-temperature heat pump, which exceeds the working temperature range of a common throttling device, namely, a primary throttling valve F3' and a secondary throttling valve F2 in front of an evaporator cannot work within the designed normal working temperature range, so that the primary throttling valve and the secondary throttling valve cannot play a due throttling and cooling role, and the energy efficiency of the whole air conditioning system is reduced, so that the refrigerant needs to be further cooled before entering the evaporator.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a high temperature heat pump system.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a high-temperature heat pump system comprises a compressor, a condenser, an economizer, a secondary throttle valve, an evaporator, a one-way valve, a recooler and a primary throttle valve;
a refrigerant outlet of the condenser is connected with a refrigerant inlet of the recooler, and a refrigerant outlet of the recooler is connected with a first inlet of the economizer; a first outlet of the economizer is connected with an inlet of a secondary throttling valve, an outlet of the secondary throttling valve is connected with a refrigerant inlet of the evaporator, a refrigerant outlet of the evaporator is connected with an air suction port of the compressor, and an air exhaust port of the compressor is connected with a refrigerant inlet of the condenser;
the first outlet of the economizer is also connected with the inlet of the first-stage throttling valve, the outlet of the first-stage throttling valve is connected with the second inlet of the economizer, the second outlet of the economizer is connected with the inlet of the one-way valve, and the outlet of the one-way valve is connected with the air supplement port of the compressor.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the recooler is a plate heat exchanger;
further, the sub-cooler is cooled by water or refrigerant or air;
further, the first-stage throttle valve is an automatic throttle valve.
The utility model has the advantages that:
1. the temperature of the refrigerant entering the throttling valve can be reduced to be within the optimal working temperature range of the throttling valve;
2. the temperature of the refrigerant can be adjusted in a larger range by adjusting the opening of the automatic throttle valve;
3. the energy efficiency coefficient of the high-temperature heat pump air-conditioning system is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
in fig. 1, an economizer; 2. a recooler; f2, a two-stage throttle valve; f3', manual throttle valve; f3, automatic throttle valve; 3. a refrigerant branch line; 4. an evaporator; 5. a compressor; 6. a condenser; 7. a one-way valve.
Detailed Description
The principles and features of the present invention are described below in conjunction with examples, which are set forth only to illustrate the present invention and are not intended to limit the scope of the present invention.
Referring to fig. 2, a high temperature heat pump system includes a compressor 5, a condenser 6, an economizer 1, a two-stage throttle valve F2, an evaporator 4, a check valve 7, a subcooler 2 and an automatic throttle valve F3;
a refrigerant outlet of the condenser 6 is connected with a refrigerant inlet of the recooler 2, and a refrigerant outlet of the recooler 2 is connected with a first inlet of the economizer 1; a first outlet of the economizer 1 is connected with an inlet of a secondary throttle valve F2, an outlet of the secondary throttle valve F2 is connected with a refrigerant inlet of the evaporator 4, a refrigerant outlet of the evaporator 4 is connected with a suction port of the compressor 5, and an exhaust port of the compressor 5 is connected with a refrigerant inlet of the condenser 6;
a refrigerant branch pipeline 3 is also arranged between the first outlet of the economizer 1 and the second-stage throttle valve F2, the automatic throttle valve F3 is installed on the refrigerant branch pipeline 3, namely the first outlet of the economizer 1 is connected with the inlet of the automatic throttle valve F3, and the automatic throttle valve F3 can automatically adjust the liquid supply amount according to the fluctuation of the working condition of the unit during operation, so that automatic adjustment is really realized; the outlet of the automatic throttle valve F3 is connected to the second inlet of the economizer 1, the second outlet of the economizer 1 is connected to the inlet of the check valve 7, and the outlet of the check valve 7 is connected to the supplementary air port of the compressor 5.
The working process of the structural system is as follows: the refrigerant from the condenser 6 passes through the sub-cooler 2 and the economizer 1 in sequence, is subjected to secondary heat exchange in the sub-cooler 2, is reduced to the temperature range of a selected throttling device, is throttled and cooled by the secondary throttling valve F2, and enters the evaporator for evaporation heat exchange; a refrigerant branch pipeline is branched from the rear of a first outlet of the economizer 1, throttled by an automatic throttle valve F3 and then enters the economizer 1 for heat exchange, and then is supplemented into the compressor 5, so that the cooling effect of the economizer on the refrigerant is further improved, and the air supplement of the compressor is realized.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (4)
1. A high-temperature heat pump system comprises a compressor, a condenser, an economizer, a secondary throttling valve, an evaporator and a one-way valve, and is characterized by further comprising a recooler and a primary throttling valve;
a refrigerant outlet of the condenser is connected with a refrigerant inlet of the sub-cooler, and a refrigerant outlet of the sub-cooler is connected with a first inlet of the economizer; a first outlet of the economizer is connected with an inlet of the secondary throttling valve, an outlet of the secondary throttling valve is connected with a refrigerant inlet of the evaporator, a refrigerant outlet of the evaporator is connected with an air suction port of the compressor, and an air exhaust port of the compressor is connected with a refrigerant inlet of the condenser;
the first outlet of the economizer is further connected with the inlet of the first-stage throttling valve, the outlet of the first-stage throttling valve is connected with the second inlet of the economizer, the second outlet of the economizer is connected with the inlet of the one-way valve, and the outlet of the one-way valve is connected with the air supplementing port of the compressor.
2. The high temperature heat pump system of claim 1, wherein the subcooler is a plate heat exchanger.
3. A high temperature heat pump system according to claim 1 or 2, wherein said sub-cooler is cooled by water or refrigerant or air.
4. A high temperature heat pump system according to claim 1 or 2, wherein the primary throttle is an auto throttle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154788.2U CN209910215U (en) | 2019-12-05 | 2019-12-05 | High-temperature heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154788.2U CN209910215U (en) | 2019-12-05 | 2019-12-05 | High-temperature heat pump system |
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| Publication Number | Publication Date |
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| CN209910215U true CN209910215U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922154788.2U Active CN209910215U (en) | 2019-12-05 | 2019-12-05 | High-temperature heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397239A (en) * | 2020-03-13 | 2020-07-10 | 海信（山东）空调有限公司 | Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system |
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2019
- 2019-12-05 CN CN201922154788.2U patent/CN209910215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397239A (en) * | 2020-03-13 | 2020-07-10 | 海信（山东）空调有限公司 | Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system |
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