CN217715103U - Double-circulation composite air source heat pump system - Google Patents
Double-circulation composite air source heat pump system Download PDFInfo
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- CN217715103U CN217715103U CN202221128976.3U CN202221128976U CN217715103U CN 217715103 U CN217715103 U CN 217715103U CN 202221128976 U CN202221128976 U CN 202221128976U CN 217715103 U CN217715103 U CN 217715103U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The embodiment of the application provides a dual cycle multiple air source heat pump system, wherein, dual cycle multiple air source heat pump system includes: an air source heat pump main system; a heat recovery system; and a medium of the heating or hot water supply circulating system is heated in parallel by the air source heat pump main system and the heat recovery system. The technical scheme of this application embodiment can carry out parallelly connected heating to heating or heat supply water circulating system, can effectively promote heat pump system's heating effect, satisfies the heat supply demand in severe cold district.
Description
Technical Field
The application relates to the technical field of refrigeration, air conditioning and heat pumps, in particular to a double-circulation composite air source heat pump system.
Background
In the related art, the energy efficiency ratio of the system is determined by the temperature of the outlet of the gas cooler of the air source CO2 heat pump system compared with the conventional refrigerant heat pump system. Under the condition that the heat exchange area of the gas cooler is determined, the water inlet temperature of the water side of the gas cooler is an important parameter for determining the CO2 outlet temperature of the gas cooler. Therefore, when the return water temperature is high, the energy efficiency of a typical air source CO2 heat pump system is low, and the system is not suitable to be used as a heating source for winter heating with high return water temperature.
SUMMERY OF THE UTILITY MODEL
Embodiments of the present application provide a dual cycle multiple air source heat pump system to solve or alleviate one or more technical problems in the prior art.
As one aspect of an embodiment of the present application, an embodiment of the present application provides a dual cycle compound air source heat pump system, including: an air source heat pump main system; a heat recovery system; and the heating or hot water supply circulating system is used for heating in parallel through the air source heat pump main system and the heat recovery system.
In one embodiment, the air source heat pump main system comprises a first compressor, a gas cooler, an intermediate heat exchanger, a first throttling device and a fin heat exchanger group, wherein the first compressor, the gas cooler, the intermediate heat exchanger, the first throttling device and the fin heat exchanger group are connected in series through a first communication pipeline, and a first medium in the first communication pipeline exchanges heat with a medium in a heating or hot water supply circulating system in the gas cooler.
In one embodiment, the heat recovery system comprises a second compressor, a condenser, a second throttling device and an intermediate heat exchanger, wherein the second compressor, the condenser, the second throttling device and the intermediate heat exchanger are connected in series through a second communicating pipeline, and a second medium in the second communicating pipeline exchanges heat with a medium in the heating or hot water supply circulating system in the condenser.
In one embodiment, the heating or hot water supply circulation system comprises a third communication pipeline, the third communication pipeline is connected with both the condenser and the gas cooler, and the condenser is connected with the gas cooler in parallel; and a first medium in the first communicating pipeline exchanges heat with a medium in the third communicating pipeline in the gas cooler, and a second medium in the second communicating pipeline exchanges heat with the medium in the third communicating pipeline in the condenser.
In an embodiment, the third communicating pipe comprises a first heat exchange branch and a second heat exchange branch, the first heat exchange branch is connected with the gas cooler, the second heat exchange branch is connected with the condenser, and the first heat exchange branch and the second heat exchange branch are connected in parallel.
In one embodiment, the heating or hot water supply circulation system further comprises a three-way valve, and the output ends of the three-way valve are respectively connected with the gas cooler and the condenser.
In one embodiment, the heating or hot water supply cycle system further comprises a pump assembly located between the input of the three-way valve and the output of the hot user end device.
In one embodiment, the intermediate heat exchanger of the air source heat pump main system and the intermediate heat exchanger of the heat recovery system are the same intermediate heat exchanger, and the air source heat pump main system and the heat recovery system are coupled through the intermediate heat exchanger.
In one embodiment, the first medium is CO2.
By adopting the technical scheme, the heating or hot water supply circulating system can be heated in parallel, and the medium in the heating or hot water supply circulating system can fully absorb heat, so that the heating effect of the double-circulation composite air source heat pump system can be effectively improved, the heating demand in severe cold areas can be met, and the high-temperature medium required for life and production can be provided.
The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.
Drawings
In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.
Fig. 1 shows a schematic structural diagram of a heat pump system according to an embodiment of the present application.
Description of the reference numerals:
100: a dual cycle multiple air source heat pump system;
110: an air source heat pump main system; 111: a first compressor; 112: an intermediate heat exchanger;
113: a fin heat exchanger group;
114: a first communicating pipe; 115: a first throttling device; 116: a gas cooler;
120: a heat recovery system; 121: a second compressor; 122: a condenser;
123: a second communicating conduit; 124: a second throttling device;
130: a heating or hot water circulation system; 131: a third communicating pipe;
1311: a first heat exchange branch; 1312: a second heat exchange branch;
132: a three-way valve; 133: a pump assembly; 134: a hot user end device.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Fig. 1 shows a schematic diagram of a dual cycle compound air source heat pump system 100 according to an embodiment of the present application. As shown in fig. 1, the heat pump system 100 includes an air source heat pump main system 110, a heat recovery system 120, and a heating or hot water supply cycle system 130.
Specifically, the heating or hot water supply cycle system 130 heats in parallel by the air-source heat pump main system 110 and the heat recovery system 120. Thus, both the air source heat pump main system 110 and the heat recovery system 120 can heat a medium, such as water, in the heating or hot water supply circulating system 130, so that the heating effect of the dual-cycle composite air source heat pump system 100 is realized, the heating requirement in severe cold areas is met, and a high-temperature medium required by life and production is provided.
In one embodiment, as shown in fig. 1, the air source heat pump main system 110 includes a first compressor 111, a gas cooler 116, an intermediate heat exchanger 112, a first throttling device 115 and a fin heat exchanger set 113, the first compressor 111, the gas cooler 116, the intermediate heat exchanger 112, the first throttling device 115 and the fin heat exchanger set 113 are connected in series through a first communication pipe 114, and a first medium in the first communication pipe 114 exchanges heat with a medium in the heating or hot water supply circulation system 130 in the gas cooler 116, so that the temperature of the medium can be raised, the heating demand in a severe cold region can be met, and a high-temperature medium required for life and production can be provided.
In one embodiment, as shown in fig. 1, the heat recovery system 120 includes a second compressor 121, a condenser 122, a second throttling device 124, and an intermediate heat exchanger 112, the second compressor 121, the condenser 122, the second throttling device 124, and the intermediate heat exchanger 112 are connected in series via a second communication pipe 123, and a second medium in the second communication pipe 123 exchanges heat with a medium in the hot water supply cycle 130 in the condenser 122. By the arrangement, the temperature of the medium can be increased, and the heating effect of the dual-cycle composite air source heat pump system 100 is effectively improved.
In one embodiment, as shown in fig. 1, the heating or hot water supply circulation system 130 includes a third communication pipe 131, the third communication pipe 131 is connected to both the condenser 122 and the gas cooler 116, and the condenser 122 is connected to the gas cooler 116 in parallel; the first medium in the first communication duct 114 exchanges heat with the medium in the third communication duct 131 in the gas cooler 116, and the second medium in the second communication duct 123 exchanges heat with the medium in the third communication duct 131 in the condenser 122.
Illustratively, in the air-source heat pump main system 110, a refrigerant such as CO in a low-temperature low-pressure two-phase state is in the fin heat exchanger set 1132After absorbing the heat of the external ambient air, a gas with a certain superheat degree is formed, and the superheated gas is compressed into high-temperature high-pressure supercritical CO by the first compressor 1112And then releases heat in the gas cooler 116 to heat the medium such as water in the third communication pipe 131. CO still having a certain temperature from the gas cooler 1162Enters the intermediate heat exchanger 112, releases heat in the intermediate heat exchanger 112, and forms high-pressure low-temperature CO2. Finally, the first throttling device 115 forms low-temperature low-pressure two-phase CO2Then enters the fin heat exchanger group 113 to complete the heat absorption and heat release circulation flow.
In the heat recovery system 120, the low temperature and low pressure refrigerant absorbs CO still having a certain temperature flowing through the intermediate heat exchanger 1122The carried heat is gasified into refrigerant gas with a certain superheat degree, and then the refrigerant gas is compressed into high-temperature high-pressure refrigerant gas in the second compressor 121, and the heat is released in the condenser 122 to heat the medium in the third communicating pipe 131, and after the refrigerant gas is condensed into high-pressure low-temperature liquid refrigerant with a certain supercooling degree, the refrigerant gas enters the intermediate heat exchanger 112 through the second throttling device 124 as low-temperature low-pressure refrigerant, so that the cycle function of heat recovery and heating of the medium in the third communicating pipe 131 is completed. Alternatively, the refrigerant may be a refrigerant that has been artificially synthesized to have certain environmental characteristics and stable physical properties, such as R-134a and R-410 a.
According to the dual-cycle composite air source heat pump system 100 of the embodiment of the application, the gas cooler 116 and the condenser 122 can heat the medium on the heating or hot water supply circulating system 130, and the medium in the third communicating pipeline 131 can fully absorb heat, so that the heating effect of the dual-cycle composite air source heat pump system 100 can be effectively improved, the heating requirement of a severe cold area is met, and the high-temperature medium required by life and production is provided.
In one embodiment, referring to fig. 1, third communication conduit 131 comprises a first heat exchange branch 1311 and a second heat exchange branch 1312, first heat exchange branch 1311 being connected to gas cooler 116, second heat exchange branch 1312 being connected to condenser 122, the two heat exchange branches being connected in parallel.
In one embodiment, referring to fig. 1, the heating or hot water supply cycle 130 further includes a three-way valve 132, and the output ends of the three-way valve 132 are connected to the gas cooler 116 and the condenser 122, respectively. For example, the medium in the third communication channel 131 is split into two branches at the unit inlet and the three-way valve 132, one branch enters the condenser 122, the other branch enters the gas cooler 116, and the two branches are collected at the unit outlet and flow out of the unit.
In this way, the three-way valve 132 can change the flow direction of the medium in the third communication pipe 131 to achieve the diversion of the medium in the third communication pipe 131, so that the medium in the third communication pipe 131 inputted from the input end of the three-way valve 132 can flow to the gas cooler 116 and the condenser 122 through the two output ends respectively according to a certain proportion, and thus the medium in the third communication pipe 131 is heated in parallel to a desired temperature through the gas cooler 116 and the condenser 122.
In one embodiment, as shown in FIG. 1, the heating or hot water supply cycle system 130 further comprises a pump assembly 133, the pump assembly 133 being located between an input of the three-way valve 132 and an output of the hot user end device 134.
Illustratively, the medium in the third communication pipe 131 may be a liquid such as water, and the pump assembly 133 may be a circulating water pump. Under the condition that the heat consumer terminal device 134 is an indoor radiator, the circulating water pump can pump water in the indoor radiator to the inlet of the double-circulation composite air source CO2 heat pump system unit, and the water is heated to the required water supply temperature through the gas cooler 116 and the condenser 122 and then is pumped back to the indoor radiator again, so that the heating requirement of the user is met.
In one embodiment, referring to fig. 1, the intermediate heat exchanger 112 of the air-source heat pump main system 110 and the intermediate heat exchanger 112 of the heat recovery system 120 are the same intermediate heat exchanger 112, and the air-source heat pump main system 110 and the heat recovery system 120 are coupled through the intermediate heat exchanger 112.
According to the double-circulation composite air source heat pump system 100 of the embodiment of the application, the double-circulation composite air source heat pump system can be used for winter circulation heating and supplying hot water for life and production by a heat pump all the year round, the highest temperature of the hot water can reach 95 ℃, the heating water supply and return temperature can reach 50 ℃ -70 ℃ (including end values), the heating energy efficiency ratio COP can reach more than 1.5 at the ambient temperature of-20 ℃, a heating radiator can be directly used at the heating tail end, and the original heating mode is not required to be modified.
Other configurations of the heat pump system 100 of the above-described embodiments may be adopted by various technical solutions known to those skilled in the art now and in the future, and will not be described in detail herein.
In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. The first feature being "under," "beneath," and "under" the second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A dual cycle compound air source heat pump system, comprising:
an air source heat pump main system;
a heat recovery system;
and a medium of the heating or hot water supply circulating system is heated in parallel by the air source heat pump main system and the heat recovery system.
2. The dual-cycle composite air source heat pump system according to claim 1, wherein the air source heat pump main system comprises a first compressor, a gas cooler, an intermediate heat exchanger, a first throttling device and a fin heat exchanger group, the first compressor, the gas cooler, the intermediate heat exchanger, the first throttling device and the fin heat exchanger group are connected in series through a first communication pipeline, and a first medium in the first communication pipeline exchanges heat with a medium in the heating or hot water supply circulation system in the gas cooler.
3. The dual-cycle compound air source heat pump system according to claim 2, wherein the heat recovery system comprises a second compressor, a condenser, a second throttling device and an intermediate heat exchanger, the second compressor, the condenser, the second throttling device and the intermediate heat exchanger are connected in series through a second communication pipeline, and a second medium in the second communication pipeline exchanges heat with a medium in the heating or hot water supply circulation system in the condenser.
4. The dual-cycle composite air source heat pump system according to claim 3, wherein the heating or hot water supply circulation system comprises a third communication pipeline, the third communication pipeline is connected with the condenser and the gas cooler, and the condenser is connected with the gas cooler in parallel; and a first medium in the first communicating pipeline exchanges heat with a medium in the third communicating pipeline in the gas cooler, and a second medium in the second communicating pipeline exchanges heat with the medium in the third communicating pipeline in the condenser.
5. The dual-cycle composite air source heat pump system of claim 4, wherein the third communication conduit comprises a first heat exchange branch and a second heat exchange branch, the first heat exchange branch is connected to the gas cooler, the second heat exchange branch is connected to the condenser, and the first heat exchange branch and the second heat exchange branch are connected in parallel.
6. The dual cycle multiple air source heat pump system of claim 3, wherein the heating or hot water supply cycle system further comprises a three-way valve, and an output end of the three-way valve is connected to the gas cooler and the condenser respectively.
7. The dual cycle multiple air source heat pump system of claim 6, wherein the heating or hot water supply cycle system further comprises a pump assembly located between the input of the three-way valve and the output of a hot user end device.
8. The dual-cycle composite air source heat pump system of claim 3, wherein the intermediate heat exchanger of the air source heat pump main system and the intermediate heat exchanger of the heat recovery system are the same intermediate heat exchanger, and the air source heat pump main system and the heat recovery system are coupled through the intermediate heat exchanger.
9. The dual cycle multiple air source heat pump system of any one of claims 2-8, wherein the first medium is CO2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221128976.3U CN217715103U (en) | 2022-05-11 | 2022-05-11 | Double-circulation composite air source heat pump system |
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| CN202221128976.3U CN217715103U (en) | 2022-05-11 | 2022-05-11 | Double-circulation composite air source heat pump system |
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| CN217715103U true CN217715103U (en) | 2022-11-01 |
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| CN202221128976.3U Active CN217715103U (en) | 2022-05-11 | 2022-05-11 | Double-circulation composite air source heat pump system |
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