CN201866928U - Quasi-two stage compression ultralow temperature air source heat pump water heater with economizer - Google Patents
Quasi-two stage compression ultralow temperature air source heat pump water heater with economizer Download PDFInfo
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- CN201866928U CN201866928U CN2010205893607U CN201020589360U CN201866928U CN 201866928 U CN201866928 U CN 201866928U CN 2010205893607 U CN2010205893607 U CN 2010205893607U CN 201020589360 U CN201020589360 U CN 201020589360U CN 201866928 U CN201866928 U CN 201866928U
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Abstract
The utility model discloses a quasi-two stage compression ultralow temperature air source heat pump water heater with an economizer, mainly consisting of an air-supplying enthalpy-gaining compressor, an air-cooled evaporator, a waterside heat exchanger, a gas-liquid separator, the economizer, a four-way valve, an electronic expansion valve, a drying filter, a liquid accumulator, an electromagnetic valve, a heating power expansion valve and a one-way valve. The quasi-two stage compression ultralow temperature air source heat pump water heater with the economizer is characterized by adopting the quasi-two stage compression technology; optimizing the evaporator structure; enlarging intervals among fins of the evaporator; and adopting the reverse defrosting technology. Proved by system performance tests and engineering practices, the quasi-two stage compression ultralow temperature air source heat pump water heater with the economizer can increase the energy efficiency ratio by 10 percent at the 0 DEG C ambient temperature, by 15 percent at the minus 5 DEG C ambient temperature, by nearly 30 percent at the10 below zero ambient temperature, and can also operates normally at the minus 15 DEG C ambient temperature to prepare hot water. The system achieves fast, uniform and thorough defrosting within the easy frosting range of temperature ranging from 2 DEG C to minus 2 DEG C, thus effectively solving the problem of frosting of wet and cold areas in south china in winter.
Description
Technical field
The utility model relates to a kind of energy-saving heating equipment, relates in particular to a kind of accurate secondary compression ultra-low temperature air source heat pump hot water machine with economizer.
Background technology
Air-source heat pump hot water with air as thermal source, with the cold-producing medium is refrigerant, mainly form by parts such as compressor, condenser, expansion valve, cross valve, air-cooled evaporimeter, gas-liquid separators, compressor sucks the low-temp low-pressure gaseous refrigerant from air-cooled evaporimeter, by acting it is compressed into high temperature and high pressure gaseous refrigerant, enter condenser and water again and carry out being condensed into the low temperature liquid cold-producing medium after the heat exchange, water absorbs the heat discharge and temperature constantly rises.The high pressure low temperature liquid that is condensed compresses thereby the effect by blower fan in air-cooled evaporimeter absorbs to be inhaled in the compressor after the surrounding air heat flashes to low-pressure gas after expansion valve throttling step-down, so continues to produce hot water through circulation repeatedly.
Heat pump heating is a kind of very energy-conservation technology, especially air source heat pump technology, it can draw abundant low-grade energy and its and use very conveniently from atmospheric environment, so air source heat pump becomes all be most widely used in multi-form a kind of of heat pump.But under low temperature environment, there are following technological difficulties in traditional air source heat pump system:
(1) heating capacity of conventional air source heat pump system descends rapidly along with the decline of outdoor environment temperature, and user's calorific requirement rises rapidly along with the decline of outdoor environment temperature.When outdoor temperature was very low, the heating capacity of system will be so small as to and can't satisfy these regional winter heating demands, even system can't run well.
(2) along with the reduction of outdoor environment temperature, the pressure ratio of compressor can be increasing, will cause unit to heat COP and sharply descend, and heating effect is undesirable.
(3) compressor exhaust temperature constantly raises, and the compressor power consumption increases, and influences the service life of compressor.
The utility model content
In view of this, the purpose of this utility model provides a kind of accurate secondary with economizer and compresses the ultra-low temperature air source heat pump system, and with respect to traditional air-source heat pump hot water, the utility model can make system's heating capacity increase, and the coefficient of performance improves greatly.
The technical solution of the utility model realizes with following method,
A kind of accurate secondary compression ultra-low temperature air source heat pump hot water machine with economizer, mainly constitute by compressor, air-cooled evaporimeter, water-side heat, gas-liquid separator, cross valve, electric expansion valve, device for drying and filtering, reservoir, magnetic valve, heating power expansion valve and check valve, it is characterized in that: be provided with economizer in the hot water machine, compressor is that tonifying Qi increases the enthalpy compressor.
Further, air-cooled evaporator designs is a V-type, and air-cooled evaporimeter comb quantity is three combs.
Further, the fin of air-cooled evaporimeter is selected hydrophilic aluminium platinum for use.
Further, adopt the reverse Defrost technology of bypass, the high temperature refrigerant bypass that system discharges compressor automatically when the fin frosting realizes automatic defrosting to air-cooled evaporimeter, can effectively solve frosting in the winter problem in southern clammy area.
Reduce frosting degree, reduce defrosting time by enlarging measures such as air-cooled evaporator area, increasing spacing of fin, increase air quantity, guarantee system's efficiently operation in clammy environment.
Described hot water machine adopts accurate secondary compress technique, has set up economizer, improves the cold-producing medium degree of supercooling with this, has increased the ability of tow taste heat in system's absorption air; Compressor selects for use tonifying Qi to increase the enthalpy compressor, and system enters tonifying Qi automatically and increases the enthalpy operating mode when environment temperature is lower than 0 ℃, increases the condensation side cold medium flux, it can be run well in low temperature, ultra-low temperature surroundings heat.
Air-cooled evaporimeter is a V-type, air-cooled evaporimeter comb is at least three rows, and air-cooled evaporimeter heat exchange area is than traditional increase at least 20%, and this has reduced air-cooled vaporizer side air heat transfer temperature difference, when having reduced winter heating to the requirement of evaporating temperature, thereby strengthened the evaporation and heat-exchange effect.
The fin of air-cooled evaporimeter is selected hydrophilic aluminium platinum for use, guarantee the nondecreasing fin interval width that strengthens simultaneously of the total heat exchange area of fin, make the system can frosting under equal outdoor temperature and damp condition or reduce frosting degree, thereby reduced defrosting number of times and defrosting time, improved the ability of system's frosting resistance.
Adopt the reverse Defrost technology of bypass, the high temperature refrigerant bypass that system discharges compressor automatically when the fin frosting realizes automatic defrosting to air-cooled evaporimeter, can effectively solve frosting in the winter problem in southern clammy area.
The good effect of technical solutions of the utility model is:
System performance testing test and engineering practice show, than the air-source heat pump hot water that does not adopt accurate secondary compress technique, can guarantee in the winter time that (about 10 ℃) run well in the cold environment heats, and can realize good defrosting in the clammy area of the easy frosting in south and guarantee the air-source heat pump hot water of heating effect.The utility model can improve 10% with Energy Efficiency Ratio under 0 ℃ of environment temperature, can improve 15% under-5 ℃ of environment temperatures, can improve closely 30% under-10 ℃ of environment temperatures, and also can run well under-15 ℃ ultra-low temperature surroundings and produces hot water.In addition, in environment temperature was the temperature range of 2 ℃～-2 ℃ of easy frostings, system's defrosting rapidly, evenly, thoroughly can effectively solve frosting in the winter problem in southern clammy area.
Description of drawings
Fig. 1 is a principle schematic of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As seen from Figure 1, the accurate secondary compression ultra-low temperature air source heat pump hot water machine of this band economizer, mainly by compressor 1, air-cooled evaporimeter 2, water-side heat 3, gas-liquid separator 4, economizer 5, cross valve 6, electric expansion valve 7, device for drying and filtering 8, reservoir 9, magnetic valve 10, heating power expansion valve 11 and check valve 12 constitute, utilize cold-producing medium to make refrigerant, consuming a small amount of high-grade electric energy absorbs in the air low grade heat energy and produces the domestic hot-water, concrete connected mode is: according to the flow direction of cold-producing medium, the blast pipe of compressor 1 and water side double-tube heat exchanger 3 join, after connect reservoir 9, the drain pipe of reservoir 9 connects device for drying and filtering 8, after connect cross valve 6.Cross valve 6 back systems are divided into major loop and auxilliary loop.Wherein the connected mode of major loop is: first of cross valve 6 is taken over and is connected with check valve 12, after connect electric expansion valve 7, the inlet of the outlet of air-cooled evaporimeter 2 and gas-liquid separator 4 joins, and the air entry of the outlet of gas-liquid separator 4 and compressor 1 joins and forms the circulation major loop.The connected mode in auxilliary loop is: be divided into two branch roads after second of cross valve 6 is taken over, wherein a branch road directly inserts economizer 5, connects check valve after economizer 5 comes out with side outlet, and gets back to major loop at the check valve 12 and 7 of the electric expansion valves of major loop.Another branch road connects heating power expansion valve 11 after second of cross valve 6 is taken over, and inserts economizer 5 again, directly gets back to compressor gas supplementing opening 1 after economizer comes out with side outlet.The connected mode of bypass circulation is: draw bypass circulation between the exhaust outlet of compressor 1 and water side double-tube heat exchanger 3, this loop directly links to each other with air-cooled evaporimeter 2 imports, the outlet of air-cooled evaporimeter 2 connects the inlet of gas-liquid separator 4, and the outlet of gas-liquid separator 4 links to each other with the air entry of compressor 1 and forms bypass circulation.Connect with copper pipe between each parts of whole system.
It can also be seen that by Fig. 1 described hot water machine adopts accurate secondary compress technique.Set up economizer 5 in the heat pump, improved the cold-producing medium degree of supercooling, increased the ability of tow taste heat in system's absorption air with this; Compressor 1 selects for use tonifying Qi to increase the enthalpy compressor, and system enters tonifying Qi automatically and increases the enthalpy operating mode when environment temperature is lower than 0 ℃, increases the condensation side cold medium flux, it can be run well in low temperature, ultra-low temperature surroundings heat.
It can also be seen that by Fig. 1, air-cooled evaporimeter 2 is a V-type, increase axial flow blower and increase the comb quantity of air-cooled evaporimeter 2, change three combs into by two traditional combs, air-cooled evaporimeter 2 heat exchange areas are than traditional increase 20%, this has reduced air-cooled evaporimeter 2 side air heat transfer temperature differences, when having reduced winter heating to the requirement of evaporating temperature, thereby strengthened the evaporation and heat-exchange effect.
It can also be seen that by Fig. 1, select hydrophilic aluminium platinum for use, guarantee the nondecreasing fin interval width that strengthens simultaneously of the total heat exchange area of fin, make the system can frosting under equal outdoor temperature and damp condition or reduce frosting degree, thereby reduced defrosting number of times and defrosting time, improved the ability of system's frosting resistance.
It can also be seen that by Fig. 1, the accurate secondary compression ultra-low temperature air source heat pump hot water machine of this band economizer adopts the reverse Defrost technology of bypass, the high temperature refrigerant bypass that system discharges compressor automatically when the fin frosting is to air-cooled evaporimeter 2, realize automatic defrosting, can effectively solve frosting in the winter problem in southern clammy area.
(1) common heating condition refrigerant flow path
(2) tonifying Qi increases enthalpy operating mode refrigerant flow path
When environment temperature is lower than 0 ℃, system enters tonifying Qi and increases the enthalpy operating mode, the flow process of refrigerant is: the air entry of compressor 1 sucks from the low-temp low-pressure gaseous refrigerant in the gas-liquid separator 4, and after it is compressed into high temperature and high pressure gaseous refrigerant, send into water-side heat 3 water interior and that need to heat by exhaust outlet of compressor and carry out heat exchange, cold-producing medium liquefaction enters in the reservoir 9 after the heat exchange, behind the dry filter of drying filter 8, enter cross valve 6, the refrigerant liquid that comes out from cross valve 6 is divided into two parts: most of cold-producing medium flows according to the refrigerant flow path of common heating condition; Separated into two parts again after other has small part cold-producing medium (total refrigerant amount 5%～10%) to come out from cross valve 6: a part directly enters in the economizer 5, and another part enters economizer 5 behind a certain pressure in the middle of heating power expansion valve 11 is throttled to.This two parts cold-producing medium carries out heat exchange in economizer 5, preceding part of refrigerant obtained further crossing gets back to electric expansion valve 7 after cold and finally sucked by the compressor air entry; Back part of refrigerant heat exchange vaporization back in economizer 5 is sucked by the compressor gas supplementing opening.
(3) bypass defrosting operating mode refrigerant flow path
Claims (3)
1. the accurate secondary with economizer compresses the ultra-low temperature air source heat pump hot water machine, mainly constitute by compressor, air-cooled evaporimeter, water-side heat, gas-liquid separator, cross valve, electric expansion valve, device for drying and filtering, reservoir, magnetic valve, heating power expansion valve and check valve, it is characterized in that: be provided with economizer in the hot water machine, compressor is that tonifying Qi increases the enthalpy compressor.
2. the accurate secondary compression ultra-low temperature air source heat pump hot water machine of band economizer according to claim 1, it is characterized in that: air-cooled evaporimeter is a V-type, air-cooled evaporimeter comb quantity is three combs.
3. the accurate secondary compression ultra-low temperature air source heat pump hot water machine of band economizer according to claim 1, it is characterized in that: the fin of air-cooled evaporimeter is selected hydrophilic aluminium platinum for use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205893607U CN201866928U (en) | 2010-11-03 | 2010-11-03 | Quasi-two stage compression ultralow temperature air source heat pump water heater with economizer |
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| CN2010205893607U CN201866928U (en) | 2010-11-03 | 2010-11-03 | Quasi-two stage compression ultralow temperature air source heat pump water heater with economizer |
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| CN201866928U true CN201866928U (en) | 2011-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338509A (en) * | 2011-09-02 | 2012-02-01 | 辛钟杰 | Electric heating evaporator for assisting air source heat pump in heating at low temperature |
| CN107014076A (en) * | 2017-05-27 | 2017-08-04 | 中原工学院 | A kind of three pressure high-efficiency air cooling Teat pump boilers suitable for high and low temperature environment |
| CN113883487A (en) * | 2020-07-01 | 2022-01-04 | 范同春 | High-temperature heat pump steam generator |
-
2010
- 2010-11-03 CN CN2010205893607U patent/CN201866928U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338509A (en) * | 2011-09-02 | 2012-02-01 | 辛钟杰 | Electric heating evaporator for assisting air source heat pump in heating at low temperature |
| CN107014076A (en) * | 2017-05-27 | 2017-08-04 | 中原工学院 | A kind of three pressure high-efficiency air cooling Teat pump boilers suitable for high and low temperature environment |
| CN113883487A (en) * | 2020-07-01 | 2022-01-04 | 范同春 | High-temperature heat pump steam generator |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Xianglong Inventor after: Wang Liang Inventor after: Zhang Xiankun Inventor after: Lu Hongbo Inventor after: Chen Yunhao Inventor after: Pan Chunbao Inventor after: Zhou Xiaoping Inventor before: Liu Xianglong Inventor before: Wang Liang Inventor before: Zhang Xiankun Inventor before: Lu Hongbo Inventor before: Chen Yunhao Inventor before: Pan Chunbao Inventor before: Zhou Xiaoping |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160204 Address after: 411201 No. 28, Bai Shi Road, Xiangtan City, Hunan Province Patentee after: Weisheng Energy Industrial Technology (Changsha) Co., Ltd. Address before: 410013, 352, Jia Jia Lake Road, Changsha, Hunan, Yuelu District Patentee before: Hunan Li'neng Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
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| CX01 | Expiry of patent term |