CN101165438A - Super low temperature heat pump air conditioner system - Google Patents
Super low temperature heat pump air conditioner system Download PDFInfo
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- CN101165438A CN101165438A CNA2006101230025A CN200610123002A CN101165438A CN 101165438 A CN101165438 A CN 101165438A CN A2006101230025 A CNA2006101230025 A CN A2006101230025A CN 200610123002 A CN200610123002 A CN 200610123002A CN 101165438 A CN101165438 A CN 101165438A
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- flash vessel
- low temperature
- heat pump
- air conditioner
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Abstract
This invention relates to a super low temperature heat pump air conditioner system which has good heating effect even under outdoor super low temperature working state. The system includes compressor, main throttling component, indoor external heat exchanger, gas-liquid separator, four-way valve and electromagnetic valve. Each part is connected through pipeline. The system also has a flash evaporator groupware. One outlet of the flash evaporator groupware connects to the air absorbing opening of compressor through pipeline. This invention uses enhanced air jet scroll compressor and steam spraying system. When heating under low temperature working state, the flash evaporator is used to spray refrigerant. It makes the compressor absorb more refrigerant. It fulfills quasi-double stages compression. The heating quantity and energy-efficiency ratio are increased. It can also keep low compression ratio and exhausting temperature. The air conditioner can work steady.
Description
Technical field
The present invention relates to the air source heat pump air-conditioner field, refer more particularly to the super low temperature heat pump air conditioner system that under outdoor ultralow temperature operating mode, has good heating effect.
Background technology
At present, the normal air source heat pump air-conditioner of selling on the market, under the operating mode of outdoor low temperature, the heating capacity decay is very serious, even can't normally start operation; Therefore can only use at transition season basically at northern China cold district normal air source heat pump air-conditioner, in case the severe winter normal air source heat pump air-conditioner that enters in cold almost can't satisfy basic heat demand.As everyone knows, based on coal-fired, combustion gas, and this heating system still all can't reach the requirement of social development at secure context in energy-saving and environmental protection in the traditional central heating mode of northern China.So need a kind of super low temperature heat pump air-conditioning that can run well of exploitation to be used for replacing the traditional central heating mode of northern China in the winter of severe cold.
Summary of the invention
Order of the present invention is to provide a kind of super low temperature heat pump air conditioner system that can normally start operation and have good heating effect under outdoor worst cold case.
Order of the present invention is achieved by the following technical solution:
A kind of super low temperature heat pump air conditioner system comprises compressor, main throttle part, indoor and outdoor heat exchanger, gas-liquid separator, cross valve, magnetic valve, connects by pipeline between each parts; It is characterized in that described system also comprises at least one flash vessel assembly, an outlet of described flash vessel assembly links to each other with the air entry of described compressor by pipeline.
Described compressor has first air entry and two air entries of second air entry, and an outlet of described flash vessel assembly links to each other with second air entry of described compressor by pipeline.
Described flash vessel assembly comprises a flash vessel, and described flash vessel comprises an air inlet, a steam (vapor) outlet, a liquid outlet, and described liquid outlet is positioned at the bottom of described flash vessel; Described air inlet and steam (vapor) outlet are positioned at the top of described flash vessel.
Described flash vessel assembly also comprises second throttle part after being connected on the preceding first throttle parts of described flash vessel air inlet and being connected on described flash vessel liquid outlet.
Described first throttle parts are formed by the check valve serial connection of a throttling arrangement and a forward conduction; Described second throttle part adopts the passage after at least one route one throttling arrangement and the magnetic valve serial connection in parallel with another throttling arrangement, and then is connected in series with the check valve of a forward conduction and forms.
The present invention adopts jet screw compressor of enhancement mode and steam injection system.Identically with common heat pump air conditioner under nominal situation freeze, heating operation; When the worst cold case heating operation, utilize the agent of flash vessel ejector refrigeration, make the compression function suck more cold-producing mediums, realize accurate twin-stage compression, improve heating capacity and Energy Efficiency Ratio, keep lower compression ratio and delivery temperature simultaneously again, operation of air conditioner is reliable and stable; The present invention can overcome existing heat pump air conditioner serious problem of heating capacity decay under outdoor worst cold case, can be used to replace the traditional central heating mode of northern China.
Description of drawings
Fig. 1 is the principle schematic of super low temperature heat pump system embodiment one;
Fig. 2 is a super low temperature heat pump system heating operation pressure-enthalpy chart;
Fig. 3 is the principle schematic of super low temperature heat pump system embodiment two;
Fig. 4 is a flash vessel structure partial cross-sectional schematic.
Fig. 5 is that the A of Fig. 4 is to partial enlarged drawing.
The specific embodiment
Embodiment one
Shown in Fig. 1,4,5, the inner expression super low temperature heat pump system that divides of the frame of broken lines of Fig. 1 wherein, the flow direction of cold-producing medium when the solid line of band arrow represents that heat pump heats among the figure.A kind of super low temperature heat pump air conditioner system comprises air injection enthalpy-increasing screw compressor 11, flash vessel assembly, main throttle part, gas-liquid separator 15, cross valve 16, outdoor heat exchanger 17, indoor heat exchanger 19; Link together by copper pipe between each parts and form a whole set of super low temperature heat pump air conditioner system.Wherein, described compressor 11 has first air entry 111 and 112 two air entries of second air entry.
Described flash vessel assembly comprises a flash vessel 12, four throttling arrangements 13 and two check valves 14, two magnetic valves 18.Described flash vessel 12 is a hollow container, comprises an air inlet 121, a steam (vapor) outlet 122, a liquid outlet 123, and described liquid outlet 123 is positioned at the bottom of described flash vessel 12; Described air inlet 121 and steam (vapor) outlet 122 are positioned at the top of described flash vessel 12; Described air inlet 121 extends to described flash vessel 12 by a pipeline 124 and locates on the lower side along the middle part of short transverse; The opening of described pipeline 124 is positioned near on the sidewall of its bottom.
The inside annexation of described flash vessel assembly is: the check valve 14 that is connected to before the described air inlet 121 of described flash vessel 12 by a throttling arrangement 13 and a forward conduction is connected in series the first throttle parts that form; Be connected to after the passage parallel connection of adopting two routes, one throttling arrangement 13 and a magnetic valve 18 serial connections in parallelly with another throttling arrangement 13 again behind the described liquid outlet 123 of described flash vessel 12, and then be connected in series second throttle part that forms with the check valve 14 of a forward conduction; Certain needs according to the accuracy of controlling refrigerant flow and cold-producing medium degree of supercooling, can adopt after one or more passage parallel connection in parallelly with another throttling arrangement 13 again, and then be connected in series with the check valve 14 of a forward conduction and to form second throttle part by a throttling arrangement 13 and a magnetic valve 18 serial connection.Passage by a throttling arrangement 13 and a magnetic valve 18 serial connections can be replaced by an electric expansion valve.The first throttle parts and second throttle part also can be replaced by an electric expansion valve respectively.
Described flash vessel assembly externally utilizes pipeline to link to each other with second air entry 112 of described compressor 11 by the described steam (vapor) outlet 122 of described flash vessel 12, end by first serial connection parts and described main throttle part and the end that connects the described indoor heat exchanger 19 of back access are (with refrigeration mode as the definition standard, this end is the entrance point of indoor heat exchanger 19), be connected in series the other end of parts and described main throttle part and connect the end (as the definition standard, this end is the port of export of outdoor heat exchanger 17 with refrigeration mode) that described outdoor heat exchanger 17 is inserted in the back by described second.In the present embodiment, described main throttle part is formed by main throttling arrangement 13A and main check valve 14A serial connection, and the end of described main throttling arrangement 13A links to each other with the backward end of described main check valve 14A; Certainly, described main throttle part also can be an electric expansion valve.
The action principle of described flash vessel 12 is: the refrigerant vapour through preliminary throttling enters after the flash vessel, liquid gathers in the flash vessel bottom, and by being positioned at the liquid outlet outflow flash vessel of bottom, follow-up through inlet chamber external heat exchanger after the throttling arrangement throttling, and the gas side in the flash vessel is by outlet inflow compressor second air entry on top.
Introduce the course of work of the present invention below by Fig. 2, among Fig. 1 1-9 be with Fig. 2 in corresponding state point.System is under outdoor worst cold case during heating operation, described compressor 11 is compressed to the refrigerant gas (state point 1) of the low-temp low-pressure that is evaporated from off-premises station heat exchanger 17 state point 2 of intermediate pressure, gas (state point 9) with the intermediate pressure that sucks from compressor second air entry 112 in the scroll plate of compressor 11 is mixed into state point 10, continue then by the gas of compressor 11 boil down to HTHPs (state point 3), the refrigerant liquid (state point 4) that the refrigerant gas of HTHP is cooled in indoor set heat exchanger 19 and is condensed into HTHP, highly pressurised liquid is to enter flash vessel 12 behind the gas-liquid mixture (state point 5) of intermediate pressure by throttling arrangement 13 throttlings, the part of refrigerant flash distillation is that the refrigerant gas (state point 9) of intermediate pressure is sucked by compressor second air entry 112 in flash vessel 12, another part cold-producing mediums are then crossed and coldly are throttled to state point 8 for the subcooled liquid of intermediate pressure (state point 7) in the flash vessel 12, the outer machine heat exchanger of inlet chamber is evaporated to state point 1 by 111 suctions of compressor first air entry then, finishes one and heats circulation.
The cardinal principle of whole super low temperature heat pump air conditioner system: heat circulation time, to carry out preliminary throttling from the cold-producing medium that indoor heat exchanger comes out, thereby the part of refrigerant gasification increases another part cold-producing medium degree of supercooling, improve the degree of supercooling of whole circulation cold-producing medium, increase the inspiratory capacity of compressor simultaneously, improve the heating capacity and the Energy Efficiency Ratio of whole system.
The throttling arrangement of described super low temperature heat pump air conditioner system includes but not limited to following mode: expansion valve, capillary etc.Described air-conditioning system adopts the intelligent defrosting pattern, can accomplish the stage of " frostless do not change ", and under the cryogenic conditions, the more common heat pump air conditioner better effects if of heating effect significantly reduces unit defrost number of times, and the unit operation heating effect is higher, and is more energy-conservation.
Embodiment two
As shown in Figure 3, be the principle schematic of present embodiment; As we know from the figure, the difference of the present embodiment and first embodiment is, in the present embodiment, replace original one group of flash vessel assembly by the flash vessel assembly of three groups of parallel connections, and in second and third two groups of flash vessel assemblies, also before the described air inlet 121 of described flash vessel, be serially connected with magnetic valve.Wherein the A magnetic valve of ordering also can be placed on the B point; The check valve that a is ordered can be placed on b point and c point.
The hot pump in low temp principle that contains a plurality of flash vessels: heat circulation time, to carry out preliminary throttling from the cold-producing medium that indoor heat exchanger comes out, thereby the part of refrigerant gasification increases another part cold-producing medium degree of supercooling, increase a plurality of flash vessels and can regulate the amount of flash distillation cold-producing medium more accurately, the degree of supercooling of more accurate control whole circulation cold-producing medium, increase the inspiratory capacity of compressor simultaneously, improved the heating capacity and the Energy Efficiency Ratio of compressor raising whole system.
Embodiment three
The difference of the present embodiment and first embodiment is that in the present embodiment, described compressor has only an air entry, and the described steam (vapor) outlet 122 of described flash vessel 12 links to each other with the air entry 111 of described compressor 11 by pipeline; Be equivalent to the gas (state point 9) of the intermediate pressure that will come out from described flash vessel 12 steam (vapor) outlets 122 and enter the gas that is evaporated to state point 1 from off-premises station heat exchanger 17 then mix earlier, and then suck at the air entry of compressor 11.Improve the suction temperature of compressor, improved the heating capacity and the Energy Efficiency Ratio of whole system.
The present invention has done introduction by the foregoing description to technical scheme of the present invention, and this can not think a kind of restriction to protection domain of the present invention; Because the present invention also has some conspicuous change or improvement,, change the position of the check valve of described flash vessel 12 front and back or restricting element or magnetic valve or number etc. as the number of flash vessel assembly as described in increasing or reducing; Device with identical function and effect replaces described flash vessel etc.; Therefore the related personnel in present technique field replaces the protection domain that also should fall into claim of the present invention to any connected mode alteration of form or parts that do not relate to basic structure that the present invention makes.
Claims (10)
1. a super low temperature heat pump air conditioner system comprises compressor, main throttle part, indoor and outdoor heat exchanger, gas-liquid separator, cross valve, magnetic valve, connects by pipeline between each parts; It is characterized in that described system also comprises at least one flash vessel assembly, an outlet of described flash vessel assembly links to each other with the air entry of described compressor by pipeline.
2. a kind of super low temperature heat pump air conditioner system according to claim 1, it is characterized in that, described compressor has first air entry and two air entries of second air entry, and an outlet of described flash vessel assembly links to each other with second air entry of described compressor by pipeline.
3. a kind of super low temperature heat pump air conditioner system according to claim 1 and 2, it is characterized in that, described flash vessel assembly comprises a flash vessel, and described flash vessel comprises an air inlet, a steam (vapor) outlet, a liquid outlet, and described liquid outlet is positioned at the bottom of described flash vessel; Described air inlet and steam (vapor) outlet are positioned at the top of described flash vessel.
4. a kind of super low temperature heat pump air conditioner system according to claim 3 is characterized in that, described flash vessel assembly also comprises second throttle part after being connected on the preceding first throttle parts of described flash vessel air inlet and being connected on described flash vessel liquid outlet.
5. a kind of super low temperature heat pump air conditioner system according to claim 4 is characterized in that, described first throttle parts are formed by the check valve serial connection of a throttling arrangement and a forward conduction; Described second throttle part adopts the passage after at least one route one throttling arrangement and the magnetic valve serial connection in parallel with another throttling arrangement, and then is connected in series with the check valve of a forward conduction and forms.
6. a kind of super low temperature heat pump air conditioner system according to claim 4 is characterized in that, described flash vessel assembly by first throttle parts and described main throttle part an end and connect the end that described indoor heat exchanger is inserted in the back; The other end by described second throttle part and described main throttle part also connects the end that described outdoor heat exchanger is inserted in the back.
7. a kind of super low temperature heat pump air conditioner system according to claim 3 is characterized in that, described flash vessel assembly is that the steam (vapor) outlet by described flash vessel utilizes pipeline to link to each other with the air entry of described compressor.
8. a kind of super low temperature heat pump air conditioner system according to claim 3 is characterized in that, described air inlet extends to described flash vessel by a pipeline and locates on the lower side along the middle part of short transverse.
9. a kind of super low temperature heat pump air conditioner system according to claim 8 is characterized in that, the opening of described pipeline is positioned near on the sidewall of its bottom.
10. a kind of super low temperature heat pump air conditioner system according to claim 1 and 2 is characterized in that, described system comprises the described flash vessel assembly of a plurality of parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101230025A CN100535548C (en) | 2006-10-21 | 2006-10-21 | Super low temperature heat pump air conditioner system |
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|---|---|---|---|
| CNB2006101230025A CN100535548C (en) | 2006-10-21 | 2006-10-21 | Super low temperature heat pump air conditioner system |
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| CN101165438A true CN101165438A (en) | 2008-04-23 |
| CN100535548C CN100535548C (en) | 2009-09-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103673417A (en) * | 2012-08-31 | 2014-03-26 | 珠海格力电器股份有限公司 | Air conditioner and two-stage compression cycle heat pump system |
| WO2014177059A1 (en) * | 2013-05-03 | 2014-11-06 | 珠海格力电器股份有限公司 | Dual-stage enthalpy-increasing air-conditioning system |
| CN104949402A (en) * | 2014-03-28 | 2015-09-30 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant adjusting method and air-conditioner |
| CN105258392A (en) * | 2015-10-15 | 2016-01-20 | 珠海格力电器股份有限公司 | Heat pump heating system, control method and heat pump water heater |
| CN106016798A (en) * | 2016-07-08 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioning system, scroll compressor and back pressure adjusting method of air conditioning system |
| CN106004329A (en) * | 2016-06-17 | 2016-10-12 | 南方英特空调有限公司 | New energy automobile ultralow-temperature heat pump air conditioner system and control method |
| WO2018006600A1 (en) * | 2016-07-08 | 2018-01-11 | 广东美的暖通设备有限公司 | Air conditioning system, scroll compressor and method for adjusting back pressure thereof |
| CN108800678A (en) * | 2018-08-07 | 2018-11-13 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN109297210A (en) * | 2018-08-28 | 2019-02-01 | 珠海格力电器股份有限公司 | A kind of air-conditioning system and control method with injector |
| CN109307378A (en) * | 2018-08-07 | 2019-02-05 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN109386983A (en) * | 2018-10-22 | 2019-02-26 | 广东美的暖通设备有限公司 | Two pipes system air injection enthalpy-increasing outdoor unit and multi-line system |
| CN109595843A (en) * | 2018-12-30 | 2019-04-09 | 武汉万居隆电器有限公司 | A kind of enhanced heat pump and its technique |
| CN109855322A (en) * | 2019-02-21 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of throttling method and unit of the unit improving heat exchange efficiency |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
| CN112747465A (en) * | 2020-12-31 | 2021-05-04 | 泰州中际热能设备有限公司 | Integral low-temperature air heating device |
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2006
- 2006-10-21 CN CNB2006101230025A patent/CN100535548C/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103673417A (en) * | 2012-08-31 | 2014-03-26 | 珠海格力电器股份有限公司 | Air conditioner and two-stage compression cycle heat pump system |
| US9803894B2 (en) | 2013-05-03 | 2017-10-31 | Gree Electric Appliances, Inc. Of Zhuhai | Dual-stage enthalpy-increasing air-conditioning system |
| WO2014177059A1 (en) * | 2013-05-03 | 2014-11-06 | 珠海格力电器股份有限公司 | Dual-stage enthalpy-increasing air-conditioning system |
| CN104949402A (en) * | 2014-03-28 | 2015-09-30 | 珠海格力电器股份有限公司 | Refrigerant adjusting device, refrigerant adjusting method and air-conditioner |
| CN104949402B (en) * | 2014-03-28 | 2019-03-05 | 珠海格力电器股份有限公司 | Refrigerant adjuster, refrigerant adjusting method and air conditioner |
| CN105258392A (en) * | 2015-10-15 | 2016-01-20 | 珠海格力电器股份有限公司 | Heat pump heating system, control method and heat pump water heater |
| CN106004329A (en) * | 2016-06-17 | 2016-10-12 | 南方英特空调有限公司 | New energy automobile ultralow-temperature heat pump air conditioner system and control method |
| CN106004329B (en) * | 2016-06-17 | 2018-03-16 | 南方英特空调有限公司 | A kind of new-energy automobile super low temperature heat pump air conditioner system and control method |
| WO2018006600A1 (en) * | 2016-07-08 | 2018-01-11 | 广东美的暖通设备有限公司 | Air conditioning system, scroll compressor and method for adjusting back pressure thereof |
| CN106016798A (en) * | 2016-07-08 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioning system, scroll compressor and back pressure adjusting method of air conditioning system |
| CN108800678A (en) * | 2018-08-07 | 2018-11-13 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN109307378A (en) * | 2018-08-07 | 2019-02-05 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN108800678B (en) * | 2018-08-07 | 2023-10-13 | 珠海格力电器股份有限公司 | Air Conditioning System |
| CN109297210A (en) * | 2018-08-28 | 2019-02-01 | 珠海格力电器股份有限公司 | A kind of air-conditioning system and control method with injector |
| WO2020082739A1 (en) * | 2018-10-22 | 2020-04-30 | 合肥美的暖通设备有限公司 | Two-pipe system gas-injection enthalpy-increasing outdoor unit and multi-split system |
| CN109386983B (en) * | 2018-10-22 | 2020-07-28 | 广东美的暖通设备有限公司 | Two-pipe jet enthalpy-increasing outdoor unit and multi-split system |
| CN109386983A (en) * | 2018-10-22 | 2019-02-26 | 广东美的暖通设备有限公司 | Two pipes system air injection enthalpy-increasing outdoor unit and multi-line system |
| CN109595843A (en) * | 2018-12-30 | 2019-04-09 | 武汉万居隆电器有限公司 | A kind of enhanced heat pump and its technique |
| CN109855322A (en) * | 2019-02-21 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of throttling method and unit of the unit improving heat exchange efficiency |
| CN112097424A (en) * | 2020-09-17 | 2020-12-18 | 珠海格力电器股份有限公司 | Refrigerating system, air supply control method and device and air conditioning equipment |
| CN112097424B (en) * | 2020-09-17 | 2024-03-19 | 珠海格力电器股份有限公司 | Refrigerating system, air supplementing control method and device and air conditioning equipment |
| CN112747465A (en) * | 2020-12-31 | 2021-05-04 | 泰州中际热能设备有限公司 | Integral low-temperature air heating device |
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