CN2847179Y - Ultralow temperature heat pump air conditioning system - Google Patents
Ultralow temperature heat pump air conditioning system Download PDFInfo
- Publication number
- CN2847179Y CN2847179Y CN 200520119580 CN200520119580U CN2847179Y CN 2847179 Y CN2847179 Y CN 2847179Y CN 200520119580 CN200520119580 CN 200520119580 CN 200520119580 U CN200520119580 U CN 200520119580U CN 2847179 Y CN2847179 Y CN 2847179Y
- Authority
- CN
- China
- Prior art keywords
- flash vessel
- heat pump
- low temperature
- compressor
- temperature heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004378 air conditioning Methods 0.000 title abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004781 supercooling Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000007701 flash-distillation Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000003434 inspiratory effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Images
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
An ultralow temperature heat pump air conditioning system comprises a compressor, a main throttling component, an indoor heat exchanger, an outdoor heat exchanger, a gas-liquid separator, a four-way valve and an electromagnetic valve, wherein all the components are connected through pipelines; the system is characterized by also comprising at least one flash evaporator component, wherein an outlet of the flash evaporator component is connected with a suction port of the compressor through a pipeline. The compressor is provided with two air suction ports, namely a first air suction port and a second air suction port, and one outlet of the flash evaporator assembly is connected with the second air suction port of the compressor through a pipeline. The utility model discloses when the operation of heating of low temperature operating mode, utilize the flash vessel to spray the refrigerant, make the compressor can inhale more refrigerants, realize accurate doublestage compression, improve heating capacity and energy efficiency ratio, keep lower compression ratio and exhaust temperature simultaneously again, the air conditioner operation is reliable and stable; the utility model discloses can overcome current heat pump air conditioner heating capacity decay serious problem under outdoor low temperature operating mode.
Description
Technical field
The utility model relates to the air source heat pump air-conditioner field, refers more particularly to the super low temperature heat pump air conditioner system that has good heating effect under outdoor ultralow temperature operating mode.
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.
The utility model content
Order of the present utility model 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 utility model 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 utility model 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 utility model 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 utility model 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 utility model has been done introduction by the foregoing description to the technical solution of the utility model, and this can not think a kind of restriction to the utility model protection domain; Because the utility model 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.; So any connected mode alteration of form or parts that do not relate to basic structure that the related personnel in present technique field makes the utility model are replaced the protection domain that also should fall into the utility model claim.
Claims (10)
1, 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.
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 |
|---|---|---|---|
| CN 200520119580 CN2847179Y (en) | 2005-11-28 | 2005-11-28 | Ultralow temperature heat pump air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520119580 CN2847179Y (en) | 2005-11-28 | 2005-11-28 | Ultralow temperature heat pump air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2847179Y true CN2847179Y (en) | 2006-12-13 |
Family
ID=37512602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520119580 Expired - Lifetime CN2847179Y (en) | 2005-11-28 | 2005-11-28 | Ultralow temperature heat pump air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2847179Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946138B (en) * | 2007-12-28 | 2013-06-26 | 江森自控科技公司 | Vapor compression system |
| CN104613665A (en) * | 2015-02-02 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat pump 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 |
-
2005
- 2005-11-28 CN CN 200520119580 patent/CN2847179Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946138B (en) * | 2007-12-28 | 2013-06-26 | 江森自控科技公司 | Vapor compression system |
| CN104613665A (en) * | 2015-02-02 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat pump 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 |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100535548C (en) | Ultralow temperature heat pump air conditioning system | |
| CN100386580C (en) | Heat pump air conditioning system and steam injection control device and control method thereof | |
| CN103175344B (en) | Cold-region used multi-connected heat pump system and control method thereof | |
| CN200955881Y (en) | Continuous defrosting and heating air source heat pump | |
| CN104613665A (en) | Heat pump air conditioning system | |
| CN202993700U (en) | Two-stage compression refrigeration system with liquid supplementing and cooling functions | |
| EP2829821A2 (en) | Heat pump and flow path switching apparatus | |
| CN102419025A (en) | Double-stage enthalpy-increasing air conditioning system | |
| CN109357431B (en) | Module combined type air conditioning system and defrosting control method | |
| CN101493269B (en) | Low temperature heat pump air conditioning system | |
| CN106225326A (en) | Heat exchanger, air conditioner outdoor unit, heat pump system, control method and air conditioner | |
| CN1844807A (en) | Defrosting apparatus and method for air-source heat pump water chiller-heater unit | |
| CN102230650A (en) | Air conditioning system with multiple heating modes | |
| CN2896146Y (en) | Heat pump air conditioning system and steam injection control device thereof | |
| CN110500804B (en) | Heat pump system and control method | |
| CN2828678Y (en) | Air conditioner with hot air direct connection structure | |
| CN109405334B (en) | Two-stage high-temperature condensation heat recovery heat pump system | |
| CN2890744Y (en) | Double-linkage double-temperature balance type water cooling and heating device | |
| CN110608539A (en) | Cascade high-temperature heat pump system | |
| CN2847179Y (en) | Ultralow temperature heat pump air conditioning system | |
| CN201637184U (en) | Energy-saving refrigerating house and quick-freeze tunnel refrigeration equipment thereof | |
| CN113390139B (en) | Carbon dioxide heat pump system | |
| CN111059732A (en) | Air conditioner and control method thereof | |
| CN108088008B (en) | Multi-split air conditioner and heat recovery system thereof | |
| CN110671834A (en) | Heat pump system and defrosting method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061213 |
|
| EXPY | Termination of patent right or utility model |