CN214148426U - High-temperature water source heat pump unit - Google Patents
High-temperature water source heat pump unit Download PDFInfo
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- CN214148426U CN214148426U CN202023230483.4U CN202023230483U CN214148426U CN 214148426 U CN214148426 U CN 214148426U CN 202023230483 U CN202023230483 U CN 202023230483U CN 214148426 U CN214148426 U CN 214148426U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims description 12
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- 239000000203 mixture Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
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- 238000007710 freezing Methods 0.000 abstract 1
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- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 239000010726 refrigerant oil Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
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- 230000003584 silencer Effects 0.000 description 2
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model provides a high temperature water source heat pump set includes: the system comprises a condenser, a flash tank, an evaporator, an ejector pump, a compressor, a first expansion valve, a second expansion valve, an oil cooler and an external oil separator. The condenser refrigerant outlet is in communication with the flash tank refrigerant inlet. The flash tank liquid refrigerant outlet is in communication with the evaporator refrigerant inlet. The outlet of the flash tank is communicated with the energy-saving port of the compressor. The refrigerant outlet of the evaporator is communicated with the suction port of the compressor. The oil return port of the evaporator is communicated with the drainage port of the ejector pump. The exhaust port of the compressor is communicated with the air inlet of the external oil separator. The injection port and the oil inlet interface of the compressor are communicated with the oil outlet of the oil cooler. An oil inlet of the oil cooler is communicated with an oil return port of the external oil separator. The high-pressure gas outlet of the external oil separator is communicated with the air inlet of the ejector pump. The outlet of the external oil separator is communicated with the refrigerant inlet of the cooler. The utility model discloses can provide high temperature when reducing the compressor freezing oil temperature.
Description
Technical Field
The utility model relates to an air conditioner heat pump field, concretely relates to high temperature water source heat pump set.
Background
Chemical industry, metallurgy, electroplating, weaving printing and dyeing, food, slaughtering, electric power, medicine etc. because of the production characteristic, in order to guarantee the production technology requirement, need consume a large amount of primary energy, simultaneously, also can have a large amount of low-grade heats to go in the atmosphere through modes such as cooling tower along with production. On one hand, because of the application of primary energy, the consumption of a large amount of petrochemical energy is caused, and meanwhile, the pollution to the atmosphere and the environment is aggravated in the process of consuming the petrochemical energy. In addition, a large amount of waste heat is discharged into the atmosphere through the cooling tower in the production process, so that a heat island effect is formed, and meanwhile, a resource waste of a water source is formed along with a large amount of water vapor in the discharging process. In the practical application process, how to recover the discharged heat is the most important research direction for the application of energy supplied by front-end production.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model provides a high temperature water source heat pump set for it is higher to improve current heat pump set energy consumption, and leaving water temperature is low, the not enough problem of oil separating effect.
In order to achieve the above objects and other related objects, the present invention provides a high temperature water source heat pump unit, which comprises: the system comprises a condenser, a flash tank, an evaporator, an ejector pump, a compressor, a first expansion valve, a second expansion valve, an oil cooler and an external oil separator; wherein,
the refrigerant outlet of the condenser is communicated with the refrigerant inlet of the flash tank through a first pipeline; the first pipeline is provided with the first expansion valve;
the liquid refrigerant outlet of the flash evaporator is communicated with the refrigerant inlet of the evaporator through a second pipeline; the second expansion valve is mounted on the second pipeline;
the gaseous refrigerant outlet of the flash tank is communicated with the energy-saving port of the compressor;
the refrigerant outlet of the evaporator is communicated with the air suction port of the compressor; the oil return port of the evaporator is communicated with the drainage port of the ejector pump;
the exhaust port of the compressor is communicated with the air inlet of the external oil separator; a compression chamber jet orifice and an oil inlet interface of the compressor are communicated with an oil outlet of the oil cooler;
an oil inlet of the oil cooler is communicated with an oil return port of the external oil separator; a cooling medium inlet of the oil cooler is communicated with a cooling medium outlet of the condenser; a cooling medium outlet of the oil cooler is communicated with a cooling medium inlet of the condenser;
a high-pressure gas outlet of the external oil separator is communicated with an air inlet of the ejector pump; the outlet of the external oil separator is communicated with the refrigerant inlet of the cooler;
and a mixture gas outlet of the ejector pump is communicated with a communication pipeline between the compressor suction port and the evaporator refrigerant outlet.
In an example of the present invention, a liquid level sensor is installed on the flash tank; the liquid level sensor and the first expansion valve are respectively in communication connection with a controller of the heat pump unit.
The utility model discloses an in the example, the oil return opening of evaporimeter with install first filter on the intercommunication pipeline between the drainage mouth of ejector pump.
In an example of the present invention, the second filter is installed on a communication pipe between the high-pressure gas outlet of the external oil separator and the air inlet of the ejector pump.
In an example of the present invention, a muffler is installed on a communication pipe between the gaseous refrigerant outlet of the flash tank and the economizer port of the compressor.
In an example of the present invention, a third filter is disposed on the communication trunk between the compression chamber injection port and the oil inlet port of the compressor and the oil outlet of the oil cooler.
The utility model discloses an in an example, the oil cooler's oil inlet with intercommunication pipeline between external oil separator's the oil return opening pass through the short circuit pipeline with the intercommunication trunk circuit is linked together, install first solenoid valve on the short circuit pipeline.
In an example of the present invention, the refrigerant outlet of the condenser is communicated with the refrigerant inlet of the flash tank through a first pipeline; the motor refrigerant injection port of the compressor is communicated with the first pipeline through a liquid injection pipeline, and a third expansion valve and a second electromagnetic valve are installed on the liquid injection pipeline.
In an example of the present invention, the first pipe is further provided with a dry filter and a sight glass, and the liquid injection pipe is communicated with the filter and the pipe between the sight glasses.
In an example of the present invention, a pressure maintaining valve is installed at a refrigerator inlet of the condenser, and a pressure taking port of the pressure maintaining valve is communicated with a pressure taking port of the evaporator through a balance pipe.
The utility model discloses a high temperature water in the condenser provides high-temperature water when can reduce the oil level as the refrigeration cycle water of oil cooler. And the utility model discloses in be provided with external oil separator alone, the quantity of crossing the filter core does not receive oil cooler's restriction, can add multilayer filter core and filter the separation, and oil separating effect is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a pipeline connection of an embodiment of the high-temperature water source heat pump unit of the present invention.
100. A condenser; 110. drying the filter; 120. a liquid viewing mirror; 130. a first expansion valve; 140. a pressure maintenance valve; 101. a first conduit; 200. a flash tank; 210. a liquid level sensor; 220. a third electromagnetic valve; 230. a one-way valve; 240. a muffler; 250. a second expansion valve; 201. a second conduit; 202. a third pipeline; 300. an evaporator; 310. a first temperature sensor; 320. a pressure sensor; 330. a first filter; 340. a chilled water outlet; 350. a chilled water inlet; 301. a fourth conduit; 302. a fifth pipeline; 303. a balance pipeline; 400. an ejector pump; 410. a second filter; 500. a compressor; 510. a second temperature sensor; 520. a third filter; 530. a third expansion valve; 540. a second solenoid valve; 501. a sixth pipeline; 502. an eighth conduit; 503. a liquid spray pipe; 600. an oil cooler; 610. a first solenoid valve; 601. a seventh pipe; 602. a ninth conduit; 603. a tenth conduit; 700. an external oil separator; 701. an eleventh conduit.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any number between the endpoints are optional unless the utility model discloses otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are intended to describe the same, and all methods, apparatus and materials similar or equivalent to those described herein may be used in the practice of this invention.
Referring to fig. 1, the present invention provides a high temperature water source heat pump unit for improving the problems of high energy consumption, low water temperature and insufficient oil separation effect of the existing heat pump unit.
Referring to fig. 1, the high temperature water source heat pump unit includes: the system comprises a condenser 100, a flash tank 200, an evaporator 300, an ejector pump 400, a compressor 500, a first expansion valve 130, a second expansion valve 250, an oil cooler 600 and an external oil separator 700; wherein a refrigerant outlet of the condenser 100 is communicated with a refrigerant inlet of the flash tank 200 through a first pipe 101, and a first expansion valve 130 is installed on the first pipe 101; the liquid refrigerant outlet of the flash tank 200 is communicated with the refrigerant inlet of the evaporator 300 through a second pipe 201, and a second expansion valve 250 is installed on the second pipe 201; the gaseous refrigerant outlet of the flash tank 200 is communicated with the energy saving port of the compressor 500 through a third pipeline 202; a refrigerant outlet of the evaporator 300 is communicated with a suction port of the compressor 500 through a fourth pipe 301; an oil return port of the evaporator 300 is communicated with a drainage port of the ejector pump 400 through a fifth pipeline 302; the exhaust port of the compressor 500 is communicated with the air inlet of the external oil separator 700 through a sixth pipeline 501; a compression chamber injection port and an oil inlet interface of the compressor 500 are communicated with an oil outlet of the oil cooler 600 through an eighth pipeline 502; an oil inlet of the oil cooler 600 is communicated with an oil return port of the external oil separator 700 through a seventh pipeline 601; a cooling medium inlet of the oil cooler 600 is communicated with a cooling medium outlet of the condenser 100 through a ninth pipe 602; a cooling medium outlet of the oil cooler 600 is communicated with a cooling medium inlet of the condenser 100 through a tenth pipe 603; two ends of an injection pipeline are communicated with a high-pressure gas outlet of the external oil separator 700 and the fourth pipeline 301 respectively, and a gas inlet of the injection pump 400 is communicated with the high-pressure gas outlet of the external oil separator 700; and a mixture outlet of the ejector pump 400 is communicated with the fourth pipeline 301. The outlet of the external oil separator 700 communicates with the refrigerant inlet of the cooler via an eleventh pipe 701. As can be seen from the above structure, the utility model discloses a high temperature water in the condenser 100 provides high temperature water when can reduce the oil level as the refrigeration cycle water of oil cooler 600. And the utility model discloses in be provided with external oil separator alone, the quantity of crossing the filter core does not receive oil cooler 600's restriction, can add multilayer filter core and filter, and oil separating effect is better, more energy-conserving.
In an example of the present invention, the condenser 100 is a shell-and-tube heat exchanger, the compressor 500 is a semi-closed screw compressor, the semi-closed screw compressor is a series of 500 types of compressors for high temperature and ultra high temperature heat pump applications, the extreme condensation temperature of the compressor 500 can reach 85 ℃ when the refrigerant R134a is used, and thus the highest high temperature hot water of 85 ℃ is provided. The evaporator 300 is a flooded evaporator, and the high-pressure gaseous refrigerant from the external oil separator 700 is used for injecting oil in the flooded evaporator 300 to a compressor suction port through the injection pump 400. The oil cooler 600 is a plate heat exchanger, the refrigerant oil of the compressor 500 exchanges heat with water, and the temperature of the refrigerant oil of the compressor 500 is recovered to provide high-temperature hot water.
In an example of the present invention, the flash tank 200 is provided with a liquid level sensor 210, and the liquid level sensor 210 can be any suitable sensor type capable of detecting the liquid level, in an example of the present invention, the photoelectric liquid level sensor 210 is used to detect the liquid level of the refrigerant in the flash tank 200. The liquid level sensor 210 and the first expansion valve 130 are respectively in communication connection with a controller of the heat pump unit. The first expansion valve 130 is an electronic expansion valve, and the liquid level sensor 210 detects the height of the liquid level in the flash tank 200 and controls the opening of the electronic expansion valve according to the height. It should be noted that the installation form of the liquid level sensor 210 on the flash tank 200 of the present invention is not limited, as long as the effective detection of the liquid level in the flash tank 200 can be realized. Since liquid subcooling is achieved by reducing the evaporation pressure of the refrigerant in a flash vessel at a pressure intermediate the condensing and evaporating pressures, the evaporation of a portion of the liquid refrigerant produces a physical effect that results in cooling of the refrigerant to its boiling point, and we regulate the amount of vapor entering compressor 500 from the economizer port in a manner that stabilizes the internal pressure of flash vessel 200. This mode of operation has more economical thermodynamic performance due to its direct heat exchange.
Referring to fig. 1, in an example of the present invention, the second expansion valve 250 is also an electronic expansion valve, and the opening degree of the second expansion valve 250 can be controlled and adjusted according to the suction superheat degree of the compressor 500. A third solenoid valve 220, a one-way valve 230 and a silencer 240 are sequentially mounted on the third pipe 202 from the gaseous refrigerant outlet of the flash tank 200 to the energy-saving port of the compressor 500, and the silencer 240 can effectively eliminate the noise of the system.
Referring to fig. 1, in an example of the present invention, a first temperature sensor 310 is further installed on the fourth pipeline 301, and the first temperature sensor 310 is used for detecting a suction temperature of the compressor 500. A second temperature sensor 510 is installed on the sixth pipe 501, and the second temperature sensor 510 is used for detecting the temperature of the refrigerant oil of the compressor 500 at the outlet of the oil cooler 600.
Referring to fig. 1, in an example of the present invention, a first filter 330 is installed on a communication pipeline between an oil return port of the evaporator 300 and a drainage port of the ejector pump 400. A second filter 410 is installed on a communication pipeline between the high-pressure gas outlet of the external oil separator 700 and the air inlet of the ejector pump 400. A muffler is installed on a communication pipe between the gaseous refrigerant outlet of the flash tank 200 and the economizer port of the compressor 500. A third filter 520 is arranged on a communication trunk between a compression chamber injection port and an oil inlet interface of the compressor 500 and the eighth pipeline 502 of the oil outlet of the oil cooler 600. A communication pipeline between an oil inlet of the oil cooler 600 and an oil return port of the external oil separator 700 is communicated with the communication main circuit through a short-circuit pipeline, and a first electromagnetic valve 610 is installed on the short-circuit pipeline. When the oil temperature does not require cooling, the first solenoid valve 610 is opened.
In order to prevent the compressor 500 from overheating and ensure the normal operation of the compressor 500, in an example of the present invention, the motor refrigerant injection port of the compressor 500 is communicated with the first pipeline 101 through the liquid injection pipeline 503, and the liquid injection pipeline 503 is provided with the third expansion valve 530 and the second solenoid valve 540. The second electromagnetic valve 540 controls to be opened or closed according to the exhaust temperature of the compressor 500, and the first electromagnetic valve 610 opens the liquid distribution when the exhaust temperature is higher than the set temperature. The third expansion valve 530 is a high-temperature thermal expansion valve, which throttles a high-temperature high-pressure liquid refrigerant into a low-temperature low-pressure gaseous refrigerant, and then enters the suction cavity of the compressor 500 to prevent the compressor 500 from overheating.
In an example of the present invention, the first pipe 101 further has a dry filter 110 and a sight glass 120 mounted thereon, and the liquid spraying pipe 503 is connected to the pipe between the filter and the sight glass 120. The dry filter 110 is used to absorb a small amount of moisture contained in the system and impurities in the filtered system, and the liquid sight glass 120 is used to observe the state of refrigerant or oil in the pipe.
In consideration of the fact that when the compressor 500 operates under the condition that the pressure difference between the oil pressure and the suction pressure is lower than 4bar, the energy regulation system fails, the lubrication is insufficient, and the compressor 500 is seriously damaged, in an example of the present invention, a pressure maintaining valve 140 is installed at the refrigerator inlet of the condenser 100, and a pressure taking port of the pressure maintaining valve 140 is communicated with a pressure taking port of the evaporator 300 through a balance pipe 303. The pressure maintaining valve 140 can maintain the pressure when the pressure difference between the oil pressure and the suction pressure is lower than 4bar, or the temperature difference between the water on the evaporation side and the condensation side is small when the unit is initially operated.
It should be noted that the techniques, shapes, structures and connection relations, which are not shown or described in detail in the present invention, are well known techniques and are not described herein again.
To sum up, the utility model discloses a high temperature water in the condenser provides high-temperature water when can reduce the oil temperature as the refrigeration cycle water of oil cooler. And the utility model discloses in be provided with external oil separator alone, the quantity of crossing the filter core does not receive oil cooler's restriction, can add multilayer filter core and filter, crosses the better, more energy-conserving of filter core oil separating effect through the multilayer. Therefore, the utility model discloses thereby effectively overcome some practical problems among the prior art and had very high use value and use meaning.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A high temperature water source heat pump unit, its characterized in that includes: the system comprises a condenser, a flash tank, an evaporator, an ejector pump, a compressor, a first expansion valve, a second expansion valve, an oil cooler and an external oil separator; wherein,
the refrigerant outlet of the condenser is communicated with the refrigerant inlet of the flash tank through a first pipeline; the first pipeline is provided with the first expansion valve;
the liquid refrigerant outlet of the flash evaporator is communicated with the refrigerant inlet of the evaporator through a second pipeline; the gaseous refrigerant outlet of the flash tank is communicated with the energy-saving port of the compressor; the second expansion valve is mounted on the second pipeline;
the refrigerant outlet of the evaporator is communicated with the air suction port of the compressor; the oil return port of the evaporator is communicated with the drainage port of the ejector pump;
the exhaust port of the compressor is communicated with the air inlet of the external oil separator; a compression chamber jet orifice and an oil inlet interface of the compressor are communicated with an oil outlet of the oil cooler;
an oil inlet of the oil cooler is communicated with an oil return port of the external oil separator; a cooling medium inlet of the oil cooler is communicated with a cooling medium outlet of the condenser; a cooling medium outlet of the oil cooler is communicated with a cooling medium inlet of the condenser;
a high-pressure gas outlet of the external oil separator is communicated with an air inlet of the ejector pump; the outlet of the external oil separator is communicated with the refrigerant inlet of the cooler;
and a mixture gas outlet of the ejector pump is communicated with a communication pipeline between the compressor suction port and the evaporator refrigerant outlet.
2. The high-temperature water source heat pump unit according to claim 1, wherein a liquid level sensor is installed on the flash tank; the liquid level sensor and the first expansion valve are respectively in communication connection with a controller of the heat pump unit.
3. The high-temperature water source heat pump unit according to claim 1, wherein a first filter is installed on a communication pipeline between an oil return port of the evaporator and a drainage port of the ejector pump.
4. The high-temperature water source heat pump unit according to claim 1, wherein a second filter is installed on a communication pipeline between a high-pressure gas outlet of the external oil separator and an air inlet of the ejector pump.
5. The high-temperature water source heat pump unit according to claim 1, wherein a muffler is installed on a communication pipeline between a gaseous refrigerant outlet of the flash tank and the energy-saving port of the compressor.
6. The high-temperature water source heat pump unit according to claim 1, wherein a third filter is arranged on a communication trunk line of a compression chamber injection port and an oil inlet port of the compressor and an oil outlet of the oil cooler.
7. The high-temperature water source heat pump unit according to claim 6, wherein a communication pipeline between an oil inlet of the oil cooler and an oil return port of the external oil separator is communicated with the communication trunk through a short-circuit pipeline, and a first electromagnetic valve is mounted on the short-circuit pipeline.
8. The high-temperature water source heat pump unit according to claim 1, wherein the refrigerant outlet of the condenser is communicated with the refrigerant inlet of the flash tank through a first pipeline; the motor refrigerant injection port of the compressor is communicated with the first pipeline through a liquid injection pipeline, and a third expansion valve and a second electromagnetic valve are installed on the liquid injection pipeline.
9. The high-temperature water source heat pump unit according to claim 8, wherein a dry filter and a liquid sight glass are further mounted on the first pipeline, and the liquid spray pipeline is communicated with a pipeline between the filter and the liquid sight glass; and a pressure maintaining valve is arranged at the refrigerator inlet of the condenser, and a pressure taking port of the pressure maintaining valve is communicated with a pressure taking port of the evaporator through a balance pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023230483.4U CN214148426U (en) | 2020-12-28 | 2020-12-28 | High-temperature water source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023230483.4U CN214148426U (en) | 2020-12-28 | 2020-12-28 | High-temperature water source heat pump unit |
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| CN214148426U true CN214148426U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023230483.4U Active CN214148426U (en) | 2020-12-28 | 2020-12-28 | High-temperature water source heat pump unit |
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| CN (1) | CN214148426U (en) |
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