CN202719813U - Transcritical CO2 heat pump air heating system and air cooler - Google Patents
Transcritical CO2 heat pump air heating system and air cooler Download PDFInfo
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- CN202719813U CN202719813U CN 201220334241 CN201220334241U CN202719813U CN 202719813 U CN202719813 U CN 202719813U CN 201220334241 CN201220334241 CN 201220334241 CN 201220334241 U CN201220334241 U CN 201220334241U CN 202719813 U CN202719813 U CN 202719813U
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Abstract
The utility model provides an air cooler for a transcritical CO2 heat pump air heating system. The air cooler for the transcritical CO2 heat pump air heating system comprises a rectangular shell which is internally provided with an air channel; two ends of the rectangular shell are provided with an air inlet interface and an air outlet interface which are communicated with the air channel; the air channel is internally provided with at least four heat exchange units with the structural forms of a tubular heat exchanger at intervals side by side; a plurality of heat exchange units are connected in series into a heat exchange group by flanges; each heat exchange unit ranks sequentially according to the size of the heat exchange area; the heat exchange area of the last heat exchange unit close to the air inlet interface is the largest, and the ratio of the heat exchange areas of the last heat exchange unit and the first heat exchange unit is greater than 3; the air inlet joint of the first heat exchange unit is an air inlet end of the heat exchange group; an air outlet of the last heat exchange unit is an air outlet end of the heat exchange group; and the air inlet end and the air outlet end of the heat exchange group penetrate out of the rectangular shell. The air cooler for the transcritical CO2 heat pump air heating system provided by the utility model has the characteristics of high heating efficiency and high temperature rise capability; and by utilizing the heat pump air heating system provided by the utility model, high-temperature air can be provided, and the heat pump air heating system has the advantages of low energy consumption and wide application range.
Description
Technical field
The utility model relates to strides critical CO
2Critical CO is specifically striden in the heat pump field
2Heat pump air heating system and be applied to the air cooler of this system.
Background technology
CO
2As the naturally occurring desirable cold-producing medium of a kind of nature, it has nontoxic, not flammable, and price is low, and ozone layer is not had the advantage destroyed, along with the enhancing of people's environmental consciousness, CO
2Cold-producing medium more and more receives people's concern, especially at the CO that strides under the critical condition
2In exothermic process, have larger temperature glide, in case when the heat absorption characteristics of this temperature glide and cooling medium are complementary, just cooling medium can be heated to very high temperature, have the advantage that reduces energy consumption.
For with air as the critical CO of striding of cooling medium
2Heat pump, it mainly comprises compressor, air cooler, regenerator, choke valve and evaporimeter, be provided with high-pressure channel and low-pressure channel in the regenerator, the outlet of compressor, air cooler, the high-pressure channel of regenerator, choke valve, evaporimeter, the low-pressure channel of regenerator and the import of compressor are communicated with successively by pipeline, wherein air cooler is generally fin-tube type heat exchanger, it includes the heat exchange fin of some parallel interval and the heat exchanger tube that some ends are communicated with, have the heat exchanger tube perforation of arrangement in a row on the heat exchange fin, the heat exchanger tube perforation that heat exchanger tube passes heat exchange fin in a row interts on heat exchange fin, the outside mouth of pipe of one row's heat exchanger tube of the first floor is concentrated to be connected in and is formed integrated import on the pipeline, the outside mouth of pipe of one row's heat exchanger tube of end layer is concentrated to be connected in and is formed integrated outlet on the pipeline, integrated import is connected with the outlet of compressor, integrated outlet is connected with the import of regenerator high-pressure channel, after the heat pump operation, the CO of low-temp low-pressure
2Gas is compressed to supercriticality in compressor, the air themperature rising of air cooler and release place heat with the air cooler periphery of then flowing through.Existing this heat pump is subjected to the restriction of air cooler exchange capability of heat and air heat absorption characteristics, there is the defective that heat exchange efficiency is low, intensification is limited in one's ability, generally the temperature of cooling medium air can be risen to 60 ℃, but be difficult to further raise again, limit with air as the critical CO of striding of cooling medium
2Therefore the application of heat pump, is necessary to improve.
Summary of the invention
The utility model is according to striding critical CO
2Heat transfer characteristic, the heat pump air heating system that a kind of transcritical CO_2 heat pump air heating system is used air cooler and adopted this air cooler is proposed, air cooler has efficiency of heating surface height, characteristics that the intensification ability is strong, the heat pump air heating system can provide high temperature air, has that energy consumption is low, the advantage of applied range.
The purpose of this utility model is achieved through the following technical solutions:
Transcritical CO_2 heat pump air heating system air cooler, include rectangular housing, be the air channel in the rectangular housing, the two ends of rectangular housing have air intake interface and the air-out interface that is communicated with the air channel, the flat raft interval is provided with at least 3 heat exchange units in the air channel, each heat exchange unit has inlet suction port and air outlet adapter, with flange a plurality of heat exchange unit serial connections are become the heat exchange group, each heat exchange unit is arranged according to the heat exchange area size order, heat exchange area by end the heat exchange unit of air intake interface end is maximum, and the ratio of an end heat exchange unit and the heat exchange area of first heat exchange unit is greater than 3; First heat exchange unit is arranged in the air channel by the air-out interface end, its inlet suction port is heat exchange group inlet end, an end heat exchange unit is arranged in the air channel near the air intake interface end, its air outlet adapter is heat exchange group outlet side, heat exchange group inlet end and heat exchange group outlet side pass outside the rectangular housing, and the version of described heat exchange unit is the finned tube exchanger structure.
Prioritization scheme, the heat exchange area ratio of adjacent 2 heat exchange units is more than or equal to 1.5.
Application has the critical CO of striding of above-mentioned air cooler
2The heat pump air heating system, it includes compressor, air cooler, regenerator, choke valve and evaporimeter, be provided with high-pressure channel and low-pressure channel in the regenerator, the low-pressure channel of the high-pressure channel of the outlet of compressor, air cooler, regenerator, choke valve, evaporimeter, regenerator is communicated with into refrigerant circulation loop with the import of compressor successively by pipeline; Described air cooler is above-mentioned transcritical CO_2 heat pump air heating system air cooler, and the heat exchange group inlet end of air cooler is connected with the outlet of compressor, and heat exchange group outlet side connects high-pressure channel one end of regenerator.
Prioritization scheme also is provided with evaporator fan near the evaporimeter; Also be provided with the air cooler blower fan in the air intake interface of air cooler.
Heat pump air heating system of the present utility model is striden critical CO after starting
2In the system by pipeline connection, circulate, when flowing through air cooler of the present utility model, stride critical CO
2Enter heat exchange group in the housing by the air inlet connecting head end of air cooler, the heat exchange unit that increases progressively through a plurality of heat exchange areas is successively striden critical CO
2Releases heat step by step; Simultaneously, under the effect of air cooler blower fan, cooling medium (air) is entered in the air cooler by the air intake interface of air cooler, the heat exchange unit that successively decreases through a plurality of heat exchange areas successively, every through behind the heat exchange unit, air themperature raises, and gradually reduces with the temperature difference of next heat exchange unit, thermal resistance in the heat transfer process is reduced, the Effective Raise heat exchange efficiency.Like this, both taken full advantage of to be in and striden CO under the critical condition
2The characteristic of temperature glide during heat release, the thermal resistance problem that the temperature difference causes greatly when having avoided again heat exchange with air heat, ranges up to 100 ℃ with low energy consumption.
The utlity model has with substantive distinguishing features and progress:
1, air cooler of the present utility model is according to striding CO under the critical condition
2Exist the characteristic of temperature glide to carry out grading design at exothermic process, by cascade raising temperature to realize high air-out air themperature;
2, air cooler of the present utility model thermal resistance in heat transfer process is little, air with stride critical CO
2Heat exchanger effectiveness high, realized the purpose of low energy consumption, high leaving air temp.
Description of drawings
Fig. 1 is the structural representation of air cooler of the present utility model.
Fig. 2 is the structural representation of heat pump air heating system of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
With reference to figure 1 and Fig. 2, transcritical CO_2 heat pump air heating system air cooler, include rectangular housing 1, be air channel 10 in the rectangular housing 1, the two ends of rectangular housing 1 have air intake interface 11 and the air-out interface 12 that is communicated with air channel 10,10 interior flat raft intervals, air channel be provided with 4 heat exchange units 2, the version of heat exchange unit 2 is the finned tube exchanger structure, it has inlet suction port and air outlet adapter, with flange 3 air outlet adapter of a heat exchange unit 2 is connected with the inlet suction port of another heat exchange unit 2 and makes 4 heat exchange units, 2 serial connections become the heat exchange group, it is interior near air inlet 11 ends that an end heat exchange unit 2 is arranged at air channel 10, its air outlet adapter is heat exchange group outlet side 22, first heat exchange unit 2 is arranged in the air channel 10 by air-out interface 12 ends, its inlet suction port is heat exchange group inlet end 21, heat exchange group inlet end 21 and heat exchange group outlet side 22 pass outside the rectangular housing 1,4 heat exchange units 2 are arranged sequentially from small to large according to heat exchange area, an end heat exchange unit is 1:1.5:2.5:5 with the heat exchange area ratio of 5,4 heat exchange units 2 of ratio equation of the heat exchange area of first heat exchange unit.
Specifically with reference to figure 2, use the critical CO of striding of above-mentioned air cooler
2The heat pump air heating system, it includes compressor 4, air cooler, regenerator 5, choke valve 6 and evaporimeter 7, be provided with high-pressure channel 51 and low-pressure channel 52 in the regenerator 5, the low-pressure channel 52 of the high-pressure channel 51 of the outlet of compressor 4, air cooler, regenerator 5, choke valve 6, evaporimeter 7, regenerator 5 is communicated with into refrigerant circulation loop with the import of compressor 4 successively by pipeline; Described air cooler is above-mentioned transcritical CO_2 heat pump air heating system air cooler, the heat exchange group inlet end 21 of air cooler is connected with the outlet of compressor 4, heat exchange group outlet side 22 is connected in high-pressure channel 51 1 ends of regenerator 5, be provided with evaporator fan 70 near the evaporimeter 7, be provided with air cooler blower fan 100 in the air intake interface 11 of air cooler.
The heat pump air heating system of present embodiment is striden critical CO after starting
2In the system by pipeline connection, circulate, during the air cooler of the present embodiment of flowing through, stride critical CO
2Enter heat exchange group in the rectangular housing 1 by the air inlet connecting head end 21 of air cooler, the heat exchange unit 2 that increases progressively through 4 heat exchange areas successively, the heat exchange group has been utilized to be in and has been striden CO under the critical condition
2The characteristic of temperature glide during heat release makes and strides critical CO
2Releases heat step by step; Simultaneously, under the effect of air cooler blower fan 100, cooling medium---air enters air channel 10 in the air cooler by the air intake interface 11 of air cooler, the heat exchange unit 2 that successively decreases through 4 heat exchange areas successively, every through behind the heat exchange unit 2, air themperature raises, and significantly reduce with the temperature difference of next heat exchange unit 2, effectively reduce the thermal resistance in the heat transfer process, improve heat exchange efficiency, the leaving air temp of air is heated to 100 ℃.
Claims (6)
1. transcritical CO_2 heat pump air heating system air cooler, include rectangular housing (1), be air channel (10) in the rectangular housing (1), the two ends of rectangular housing (1) have air intake interface (11) and the air-out interface (12) that is communicated with air channel (10), being provided with more than a heat exchange unit (2) of interior flat raft interval, air channel (10), each heat exchange unit (2) has inlet suction port and air outlet adapter, with flange (3) a plurality of heat exchange units (2) serial connection is become the heat exchange group, the inlet suction port of first heat exchange unit (2) is heat exchange group inlet end (21), the air outlet adapter of an end heat exchange unit (2) is heat exchange group outlet side (22), heat exchange group inlet end (21) and heat exchange group outlet side (22) pass outside the rectangular housing (1), it is characterized in that: described heat exchange group has 4 heat exchange units (2) at least, each heat exchange unit (2) is arranged according to the heat exchange area size order, heat exchange area by the end heat exchange unit of air intake interface (11) end is maximum, and the ratio of an end heat exchange unit and the heat exchange area of first heat exchange unit is greater than 3.
2. transcritical CO_2 heat pump air heating system air cooler according to claim 1 is characterized in that: the heat exchange area of adjacent 2 heat exchange units (2) is than more than or equal to 1.5.
3. transcritical CO_2 heat pump air heating system air cooler according to claim 1 and 2, it is characterized in that: the version of described heat exchange unit (2) is the finned tube exchanger structure.
4. stride critical CO
2The heat pump air heating system, it includes compressor (4), air cooler, regenerator (5), choke valve (6) and evaporimeter (7), be provided with high-pressure channel (51) and low-pressure channel (52) in the regenerator (5), the low-pressure channel (52) of the high-pressure channel (51) of the outlet of compressor (4), air cooler, regenerator (5), choke valve (6), evaporimeter (7), regenerator (5) is communicated with into refrigerant circulation loop with the import of compressor (4) successively by pipeline, it is characterized in that: described air cooler is that claim 1 or 2 or 3 is describedly striden critical CO
2Heat pump air heating system air cooler, the heat exchange group inlet end (21) of air cooler is connected with the outlet of compressor (4), and heat exchange group outlet side (22) connects high-pressure channel (51) one ends of regenerator (5).
5. the described critical CO that strides according to claim 4
2The heat pump air heating system is characterized in that: be provided with evaporator fan (70) near the evaporimeter (7).
6. the described critical CO that strides according to claim 4
2The heat pump air heating system is characterized in that: be provided with air cooler blower fan (100) in the air intake interface (11) of air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334241 CN202719813U (en) | 2012-07-11 | 2012-07-11 | Transcritical CO2 heat pump air heating system and air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334241 CN202719813U (en) | 2012-07-11 | 2012-07-11 | Transcritical CO2 heat pump air heating system and air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719813U true CN202719813U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334241 Withdrawn - After Issue CN202719813U (en) | 2012-07-11 | 2012-07-11 | Transcritical CO2 heat pump air heating system and air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778087A (en) * | 2012-07-11 | 2012-11-14 | 广州万宝集团有限公司 | Transcritical CO2 heat pump air heating system and air cooling device |
-
2012
- 2012-07-11 CN CN 201220334241 patent/CN202719813U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778087A (en) * | 2012-07-11 | 2012-11-14 | 广州万宝集团有限公司 | Transcritical CO2 heat pump air heating system and air cooling device |
| CN102778087B (en) * | 2012-07-11 | 2014-04-09 | 广州万宝集团有限公司 | Transcritical CO2 heat pump air heating system and air cooling device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130206 Effective date of abandoning: 20140409 |
|
| RGAV | Abandon patent right to avoid regrant |