CN205481899U - Heat pump system - Google Patents
Heat pump system Download PDFInfo
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- CN205481899U CN205481899U CN201521054697.7U CN201521054697U CN205481899U CN 205481899 U CN205481899 U CN 205481899U CN 201521054697 U CN201521054697 U CN 201521054697U CN 205481899 U CN205481899 U CN 205481899U
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- Prior art keywords
- circulation circuit
- refrigerant circulation
- heat exchanger
- heat pump
- coolant
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Abstract
An object of the utility model is to provide a heat pump system, the main problem that heat pump system is low to high temperature heat source utilization rate that has now of solving. The utility model provides a heat pump system has two sets of refrigerant circulation circuit, carry out heat exchange with condenser outflow refrigerant among one of them refrigerant circulation circuit and the refrigerant that another refrigerant circulation circuit will flow in the evaporimeter entry in middle heat transfer device, make two refrigerant circulation circuit's evaporating temperature and condensing temperature all inequality through heat transfer device in the middle of setting up, different evaporating temperature make heat pump system not only can utilize the high temperature part of high temperature heat source, can also utilize the well low temperature part of high temperature heat source, utilization ratio to the high temperature heat source is greatly improved, and different condensing temperature can be to being produced gradient heating effect by heating medium, thereby reduce the condenser work difference in temperature, improve heat pump system's heating performance coefficient.
Description
Technical field
This utility model relates to art of heat pumps, is specifically related to a kind of heat pump.
Background technology
Conventional high temperature heat pump typically uses single stage compress heat pump circulating system as shown in Figure 1, including the compressor being sequentially connected with, condenser, throttling arrangement and vaporizer.In order to obtain higher heat supply temperature, the coolant with higher critical temperatures is generally operational under high condensation temperature, and the operational difference between heated medium is relatively big, and when heat source temperature is relatively low, coefficient of performance in heating COP is relatively low for heat pump；When the higher for example, industrial exhaust heat of heat source temperature, it is only capable of utilizing the high-temperature part of thermal source to waste middle low temperature part.
Utility model content
In view of this, this utility model provides a kind of heat pump, to solve problem low to high temperature heat source utilization rate present in prior art.
For reaching this purpose, this utility model by the following technical solutions:
A kind of heat pump, including the first refrigerant circulation circuit, the second refrigerant circulation circuit and intermediate heat transfer device, described intermediate heat transfer device includes the first coolant path and the second coolant path carrying out heat exchange each other；
Described first coolant path is connected between condensator outlet and the throttling arrangement entrance of described first refrigerant circulation circuit；
Described second coolant path is connected between throttling arrangement outlet and the evaporator inlet of described second refrigerant circulation circuit.
Preferably, the vaporizer of described second refrigerant circulation circuit is parallel with diverter branch.
Preferably, described diverter branch is provided with flow control valve.
Preferably, described flow control valve is electromagnetism two-port valve.
Preferably, the compressor of described first refrigerant circulation circuit is one or at least two being arranged in parallel；And/or,
The compressor of described second refrigerant circulation circuit is one or at least two being arranged in parallel.
Preferably, the coolant in described first refrigerant circulation circuit and described second refrigerant circulation circuit is that critical temperature is higher than T1, the normal boiling point single coolant less than T2 or mixing coolant；
Wherein, 100 DEG C≤T1≤200 DEG C ,-45 DEG C≤T2≤45 DEG C.
Preferably, described intermediate heat transfer device is double-tube heat exchanger, plate type heat exchanger or micro-channel heat exchanger.
Preferably, the throttling arrangement of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is capillary tube, heating power expansion valve, electric expansion valve, restriction sleeve or restricting orifice.
Preferably, the compressor of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is capacity variable type compressor or inverter compressor.
Preferably, described first refrigerant circulation circuit includes that vaporizer, described second refrigerant circulation circuit include condenser；
The vaporizer of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is fin-tube heat exchanger, double-tube heat exchanger, plate type heat exchanger, case tube heat exchanger or micro-channel heat exchanger；
The condenser of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is fin-tube heat exchanger, double-tube heat exchanger, plate type heat exchanger, case tube heat exchanger or micro-channel heat exchanger.
The beneficial effects of the utility model are:
The heat pump that this utility model provides has two set refrigerant circulation circuit, condenser in a wherein refrigerant circulation circuit is flowed out coolant and another refrigerant circulation circuit will flow into the coolant of evaporator inlet and carry out heat exchange in intermediate heat transfer device, by arranging intermediate heat transfer device, the evaporating temperature of two refrigerant circulation circuit and condensation temperature are all differed, different evaporating temperatures makes heat pump can not only utilize the high-temperature part of high temperature heat source, the middle low temperature part of high temperature heat source can also be used, substantially increase the utilization rate to high temperature heat source, and different condensation temperatures can produce gradient-heated effect to heated medium, thus reduce the condenser working temperature difference, improve the coefficient of performance in heating of heat pump.
Accompanying drawing explanation
By description to this utility model embodiment referring to the drawings, of the present utility model above-mentioned and other objects, features and advantages will be apparent from, in the accompanying drawings:
Fig. 1 is the schematic diagram of existing single stage compress heat pump circulating system；
Fig. 2 is one of structural representation of heat pump of this utility model offer；
Fig. 3 is the two of the structural representation of the heat pump that this utility model provides.
In figure, 1 ', compressor；2 ', condenser；3 ', throttling arrangement；4 ', vaporizer；
11, the first compressor；12, the second compressor；21, the first condenser；22, the second condenser；31, first throttle device；32, the second throttling arrangement；41, the first vaporizer；42, the second vaporizer；5, intermediate heat transfer device；6, diverter branch；7, electromagnetism two-port valve.
Detailed description of the invention
Below based on embodiment, this utility model is described, but this utility model is not restricted to these embodiments.In below details of the present utility model being described, detailed describe some specific detail sections.The description not having these detail sections for a person skilled in the art can also understand this utility model completely.In order to avoid obscuring essence of the present utility model, the narration the most in detail of known method, process, flow process, element.
The embodiment of heat pump of the present utility model is described referring to Fig. 2 and Fig. 3.
As shown in Figure 2, this utility model provides a kind of heat pump, including two set refrigerant circulation circuit, i.e. first refrigerant circulation circuit and the second refrigerant circulation circuit, also include an intermediate heat transfer device 5, by intermediate heat transfer device 5, first refrigerant circulation circuit and the second refrigerant circulation circuit are coupled.
Concrete, first refrigerant circulation circuit includes first compressor the 11, first condenser 21, first throttle device 31 and the first vaporizer 41 being sequentially connected with by the road, and the second refrigerant circulation circuit includes the second compressor the 12, second condenser the 22, second throttling arrangement 32 and the second vaporizer 42 being sequentially connected with by the road.
Intermediate heat transfer device 5 includes the first coolant path and the second coolant path, can carry out mutual heat exchange between two coolant paths.One end of first coolant path is connected with the outlet of the first condenser 21, and the other end is connected with the entrance of first throttle device 31.One end of second coolant path is connected with the outlet of the second throttling arrangement 32, and the entrance of the other end and the second vaporizer 42 connects.
The work process of this heat pump is:
nullFirst compressor 11 of the first refrigerant circulation circuit is sent in the first condenser 21 after coolant is compressed into the gas of High Temperature High Pressure，In the first condenser 21 supercool for highly pressurised liquid after enter intermediate heat transfer device 5 the first coolant path，Second compressor 12 of the second refrigerant circulation circuit is sent in the second condenser 22 after coolant is compressed into the gas of High Temperature High Pressure，In the second condenser 22 supercool for highly pressurised liquid，Then after the second throttling arrangement 32 throttling becomes low-temp low-pressure two phase fluid, enter the second refrigerant passage of intermediate heat transfer device 5，In intermediate heat transfer device 5，Coolant in first coolant path and the coolant in the second coolant path carry out heat exchange，Highly pressurised liquid in first coolant path is cooled down further，Then after first throttle device 31 throttles, enter the first vaporizer 41 evaporation gasification，The coolant of gasification completes a circulation in returning to the first compressor 11，And the operative liquid coolant endothermic gasification of the low-temp low-pressure two phase fluid in the second coolant path，Gasification is evaporated completely subsequently into the second vaporizer 42，The coolant of gasification completes a circulation in returning to the second compressor 12.
Knowable to above-mentioned work process, due to the heat exchange in intermediate heat transfer device 5 so that evaporating temperature and the condensation temperature of two refrigerant circulation circuit all differ, the condensation temperature of the i.e. first refrigerant circulation circuit is relatively low, and the evaporating temperature of the second refrigerant circulation circuit is higher.Owing to the evaporating temperature of two set refrigerant circulation circuit is different, hence in so that two set refrigerant circulation circuit in vaporizer can gradient absorb thermal source heat, the high-temperature part of high temperature heat source can not only be utilized, the middle low temperature part of high temperature heat source can also be used, substantially increase the utilization rate to high temperature heat source, and owing to the condensation temperature of two set refrigerant circulation circuit is different, hence in so that the condenser in two set refrigerant circulation circuit can produce gradient-heated effect to heated medium, thus reduce the condenser working temperature difference, improve the coefficient of performance in heating of heat pump.
Wherein, first compressor 11 and the second compressor 12 may each be one, it is also possible to be at least two being arranged in parallel, can be capacity variable type compressor, can also be inverter compressor, such as rotor compressor, screw compressor, helical-lobe compressor, centrifugal compressor etc..The structure of intermediate heat transfer device 5 does not limits, using the teaching of the invention it is possible to provide two-way coolant path also realizes heat exchange each other, such as, can be double-tube heat exchanger, plate type heat exchanger, micro-channel heat exchanger etc..The concrete structure of first throttle device 31 and the second throttling arrangement 32 does not limits, it is possible to realize the structure of reducing pressure by regulating flow effect, such as capillary tube, heating power expansion valve, electric expansion valve, restriction sleeve, restricting orifice etc..The concrete structure of first vaporizer the 41, second vaporizer the 42, first condenser 21 and the second condenser 22 does not limits, it is capable of the structure of heat exchange, such as fin-tube heat exchanger, double-tube heat exchanger, plate type heat exchanger, case tube heat exchanger, micro-channel heat exchanger etc..
Coolant in first refrigerant circulation circuit and the coolant in the second refrigerant circulation circuit can be the same or different, preferably employ critical temperature be less than the single coolant of T2 higher than T1, normal boiling point or mix coolant, 100 DEG C≤T1≤200 DEG C,-45 DEG C≤T2≤45 DEG C, further preferred, 125 DEG C≤T1≤185 DEG C ,-35 DEG C≤T2≤35 DEG C.
In a preferred embodiment, as shown in Figure 3, second vaporizer 42 is parallel with diverter branch 6, the coolant flowed out by the second coolant path is shunted, thus control to flow into the coolant quantity in the second vaporizer 42, such as, diverter branch 6 arranges flow control valve, further preferred, flow control valve is electromagnetism two-port valve 7, when the second vaporizer 42 quits work, electromagnetism two-port valve 7 is opened, major part coolant enters diverter branch to reduce the pressure drop of the second vaporizer 42, in intermediate heat transfer device 5, remain able to the liquid refrigerants in the first coolant path is produced supercool effect, improve the heat pump utilization rate to thermal source low temperature part further.
Additionally, it should be understood by one skilled in the art that accompanying drawing is provided to descriptive purpose provided herein, and accompanying drawing is not necessarily drawn to scale.
It will also be appreciated that example embodiment is provided, so that the disclosure is comprehensive, and its scope is fully conveyed to those skilled in the art.A lot of specific detail (such as particular elements, equipment and the example of method) are presented to provide thorough understanding of the disclosure.It will be apparent to one skilled in the art that and need not use specific detail, example embodiment can be carried out with the most different forms, and example embodiment is understood not to limit the scope of the present disclosure.In some example embodiments, it is thus well known that device structure and widely-known technique are not described in.
When an element or layer be mentioned as another element or layer " on ", " being engaged to ", " being connected to " or " being coupled to " another element or during layer, its can directly on another element or layer, directly engaged, be connected or coupled to another element or layer, or intermediary element or layer can be there is.By contrast, when an element be mentioned as " directly " another element or layer " on ", " being bonded directly to ", " being directly coupled to " or " being directly coupled to " another element or during layer, intermediary element or layer can not be there is.For describing other word of relation between element and should be explained in a similar manner (such as, " between " and " directly between ", " neighbouring " and " being directly adjacent to " etc.).As used herein, arbitrary during term "and/or" includes the Listed Items of one or more association or all combine.
Although term first, second, third, etc. can be used for describing each element, parts, region, layer and/or section at this, but these elements, parts, region, layer and/or section should not be limited by these terms.These terms can be only used for distinguishing an element, parts, region, layer or section with another element, region, layer or section.The such as term of " first ", " second " and other numerical value term do not mean that order or order when used herein, unless clearly indicated by the context.Thus, the first element discussed below, parts, region, layer or section are referred to alternatively as the second element, parts, region, layer or section, without departing from the teaching of example embodiment.Additionally, in description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, to those skilled in the art, this utility model can have various change and change.All any modification, equivalent substitution and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (10)
1. a heat pump, it is characterized in that: include that the first refrigerant circulation circuit, the second refrigerant circulation circuit and intermediate heat transfer device (5), described intermediate heat transfer device (5) include the first coolant path and the second coolant path carrying out heat exchange each other；
Described first coolant path is connected between condenser (21) outlet and throttling arrangement (31) entrance of described first refrigerant circulation circuit；
Described second coolant path is connected between throttling arrangement (32) outlet and vaporizer (42) entrance of described second refrigerant circulation circuit.
Heat pump the most according to claim 1, it is characterised in that: it is parallel with diverter branch (6) on the vaporizer (42) of described second refrigerant circulation circuit.
Heat pump the most according to claim 2, it is characterised in that: described diverter branch is provided with flow control valve on (6).
Heat pump the most according to claim 3, it is characterised in that: described flow control valve is electromagnetism two-port valve (7).
5. according to the heat pump described in any one of Claims 1-4, it is characterised in that: the compressor (11) of described first refrigerant circulation circuit is one or at least two being arranged in parallel；And/or,
The compressor (12) of described second refrigerant circulation circuit is one or at least two being arranged in parallel.
6. according to the heat pump described in any one of Claims 1-4, it is characterised in that: the coolant in described first refrigerant circulation circuit and described second refrigerant circulation circuit is that critical temperature is higher than T1, the normal boiling point single coolant less than T2 or mixing coolant；
Wherein, 100 DEG C≤T1≤200 DEG C ,-45 DEG C≤T2≤45 DEG C.
7. according to the heat pump described in any one of Claims 1-4, it is characterised in that: described intermediate heat transfer device (5) is double-tube heat exchanger, plate type heat exchanger or micro-channel heat exchanger.
8. according to the heat pump described in any one of Claims 1-4, it is characterised in that: the throttling arrangement (31,32) of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is capillary tube, heating power expansion valve, electric expansion valve, restriction sleeve or restricting orifice.
9. according to the heat pump described in any one of Claims 1-4, it is characterised in that: the compressor (11,12) of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is capacity variable type compressor or inverter compressor.
10. according to the heat pump described in any one of Claims 1-4, it is characterised in that: described first refrigerant circulation circuit includes that vaporizer (41), described second refrigerant circulation circuit include condenser (22)；
The vaporizer (41,42) of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is fin-tube heat exchanger, double-tube heat exchanger, plate type heat exchanger, case tube heat exchanger or micro-channel heat exchanger；
The condenser (21,22) of described first refrigerant circulation circuit and/or described second refrigerant circulation circuit is fin-tube heat exchanger, double-tube heat exchanger, plate type heat exchanger, case tube heat exchanger or micro-channel heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054697.7U CN205481899U (en) | 2015-12-16 | 2015-12-16 | Heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054697.7U CN205481899U (en) | 2015-12-16 | 2015-12-16 | Heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205481899U true CN205481899U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521054697.7U Expired - Fee Related CN205481899U (en) | 2015-12-16 | 2015-12-16 | Heat pump system |
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| Country | Link |
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| CN (1) | CN205481899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588357A (en) * | 2015-12-16 | 2016-05-18 | 珠海格力电器股份有限公司 | Heat pump system |
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2015
- 2015-12-16 CN CN201521054697.7U patent/CN205481899U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588357A (en) * | 2015-12-16 | 2016-05-18 | 珠海格力电器股份有限公司 | Heat pump system |
| CN105588357B (en) * | 2015-12-16 | 2019-04-16 | 珠海格力电器股份有限公司 | A kind of heat pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20211216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |