CN205641301U - Heat pump type air conditioning system - Google Patents
Heat pump type air conditioning system Download PDFInfo
- Publication number
- CN205641301U CN205641301U CN201620422062.6U CN201620422062U CN205641301U CN 205641301 U CN205641301 U CN 205641301U CN 201620422062 U CN201620422062 U CN 201620422062U CN 205641301 U CN205641301 U CN 205641301U
- Authority
- CN
- China
- Prior art keywords
- indoor
- compressor
- heat exchanger
- heat pump
- condenser
- 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 - Fee Related
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model provides an including compressor, indoor main heat exchanger, throttle part and condenser, the compressor has gas vent and air inlet, and gas vent, indoor main heat exchanger, throttle part, condenser and air inlet connect gradually through the pipeline and form circulation canal, still include three -way valve and indoor pair of heat exchanger, two ports of three -way valve are connected in throttle part and condenser respectively, the indoor pair of heat exchanger and three -way valve and the air inlet connect to form with the condenser structure that connects in parallel. Be in when heating the mode when the system, the high temperature and high pressure coolant of compressor mouth goes into indoor main heat exchanger through the conduit flow and carries out the heat exchange, provides corresponding heat to the room, and the refrigerant after the condensation leads to throttle parts throttle back and divides into two the tunnel through the three -way valve, all the way refrigerant to compressor, the refrigerant flows in indoor pair of heat exchanger all the way in addition, carries out the indoor dehumidification of evaporating, realized the effect that heats and dehumidify, system energy consumption is lower.
Description
Technical field
This utility model relates to air conditioner controlling technology field, particularly a kind of heat pump type air conditioner system.
Background technology
Tradition constant temperature and humidity machine set system all uses the refrigeration auxiliary heat of supporting electricity and the mode of humidifier, needs in room
Wanting heat supply to need to open large power, electrically heating, also room load is low and open often when needing refrigerated dehumidification
Large power, electrically heating carries out thermal compensation, big owing to running power, not only control panel is required height, same to luck
During row, power consumption is the highest, the most energy-conservation.In the case of particularly needing dehumidifying in heating operations, need individually
Electrical heating combination, the energy consumption of system is higher.
Utility model content
This utility model provides a kind of heat pump type air conditioner system, to solve in above-mentioned constant temperature and humidity machine set system,
In the case of needing dehumidifying in heating operations, needing electrical heating combination, the technology that the energy consumption of system is higher is asked
Topic.
In order to solve above-mentioned technical problem, this utility model provide one include compressor, indoor main heat exchanger,
Throttle part and condenser, described compressor has air vent and air inlet, described air vent, described indoor
It is logical that main heat exchanger, described throttle part, described condenser and air inlet are in turn connected to form circulation by pipeline
Road；Also including three-way valve and indoor auxiliary heat exchanger, two ports of described three-way valve are respectively by pipeline and institute
State throttle part and described condenser connects, described indoor auxiliary heat exchanger and the 3rd port of described three-way valve
It is in turn connected to form and described condenser parallel-connection structure by pipeline with described air inlet.
The beneficial effects of the utility model are: by arranging indoor auxiliary heat exchanger in heat pump heating air conditioner system,
Auxiliary heat exchanger forms parallel-connection structure, when system is in heating mode, the height of exhaust outlet of compressor with condenser
Temperature high-pressure refrigerant flows into indoor main heat exchanger by pipeline and carries out heat exchange, provides corresponding heat to room
Amount, condensed cold-producing medium is divided into two-way by three-way valve after leading to throttle part throttling, and a road cold-producing medium passes through
Cryogenic gaseous cold-producing medium after condenser evaporation, returns compressor；An other road cold-producing medium flows into indoor
Auxiliary heat exchanger, carries out indoor and is evaporated dehumidifying；Achieving the effect heating and dehumidifying, native system heats and removes
Need not the auxiliary hot equipment of extra electricity during wet, system energy consumption is relatively low.
Further, described three-way valve is threeway proportioning valve.
Above-mentioned further scheme is used to provide the benefit that: by threeway proportioning valve, it is simple to regulation two-way refrigeration
The flow connect, can accurately control heating effect and moisture removal.
Further, also include cross valve, four ports of described cross valve by pipeline respectively with described aerofluxus
Mouth, described indoor main heat exchanger, described condenser and air inlet connect.
Use above-mentioned further scheme to provide the benefit that: by arranging cross valve, be that cold-producing medium realizes commutation,
Achieve the two kinds of functions heating and freezing of heat pump type air conditioner system.
Further, the pipeline between described indoor auxiliary heat exchanger and described air inlet is provided with in restriction conduit
Coolant flows to the check valve of described indoor auxiliary heat exchanger.
Above-mentioned further scheme is used to provide the benefit that: by arranging check valve, it is ensured that the system in compressor
Cryogen will not reversely be flowed in indoor auxiliary heat exchanger.
Further, described throttle part is capillary tube, heating power expansion valve or electric expansion valve.
Above-mentioned further scheme is used to provide the benefit that: capillary tube is as throttle part, and structure is relatively simple,
There is no moving component, the most reliably；Heating power expansion valve, as throttle part, has certain self regulation energy
Power, regulating effect is preferable；Electric expansion valve is as throttle part, in addition to having throttling action, it is also possible to set
Put the degree of superheat of system, and realize the energy-conservation of system.
Further, described heat pump type air conditioner system also includes and described indoor main heat exchanger and indoor auxiliary heat exchanger
Be set together the humidification system for increasing indoor humidity.
Above-mentioned further scheme is used to provide the benefit that: heat pump type air conditioner system is provided with humidification system, when
When indoor humidity is too low or exceeds established standards, start humidification system, for indoor humidification, improve indoor ring
The comfort level in border.
Further, the first port of described condenser is also associated with pressure transducer, and described condenser is provided with
Blower fan, described blower fan is electrically connected with fan speed regulation device, and described fan speed regulation device is electrically connected with described pressure transducer
Connect.
Above-mentioned further scheme is used to provide the benefit that: condensation fan is adjustable speed blower fan, is passed by pressure
The pressure feedback of sensor detection condensator outlet cold-producing medium carries out rotating speed tune to fan speed regulation device to blower fan, from
And control system operating pressure, it is ensured that system reliability service under various conditions.
Further, described compressor is variable conpacitance compressor.
Above-mentioned further scheme is used to provide the benefit that: variable conpacitance compressor, can be according to room internal loading
Demand carries out capacity regulating, improves system reliability of operation.
Further, described variable conpacitance compressor is digital scroll compressor or frequency-changeable compressor.
Above-mentioned further scheme is used to provide the benefit that: digital scroll compressor or frequency-changeable compressor, wherein,
The energy-saving effect of digital scroll compressor is the best；Frequency-changeable compressor has wide ability range of operation and preferably
Operational efficiency.
Further, the pipeline between described exhaust outlet of compressor with described cross valve is connected there is oil eliminator portion
Part, the oil-out of described oil eliminator parts is threaded a pipe with the air inlet of described compressor and is connected；Described compression
It is connected on pipeline between the air inlet of machine with described cross valve and has fluid reservoir.
Above-mentioned further scheme is used to provide the benefit that: the refrigeration oil backflow out of oil eliminator isolation of components
To compressor inlet side, meeting compressor has the refrigeration oil of abundance to be lubricated under various conditions, heightens
Stability；Fluid reservoir allows the cold-producing medium not being thoroughly cooled again cool down and is fully achieved liquid, prevents a large amount of
Liquid enters compressor, it is allowed to a small amount of refrigeration oil returns to compressor, improves the reliability of compressor operating.
Accompanying drawing explanation
Fig. 1 is this utility model heat pump type air conditioning system example structure figure,
Fig. 2 is to heat dehumidification mode refrigerant flow direction figure in this utility model heat pump type air conditioning system embodiment,
Fig. 3 is refrigeration mode refrigerant flow direction figure in this utility model heat pump type air conditioning system embodiment.
In accompanying drawing, the list of parts representated by each label is as follows:
01, compressor, 02, indoor main heat exchanger, 03, throttle part, 04, condenser, 05, indoor
Auxiliary heat exchanger, 06, three-way valve, 07, cross valve, 08, check valve, 09, humidification system, 10, pressure
Sensor, 11, fan speed regulation device, 12, oil eliminator parts, 13, fluid reservoir, 14, stop valve
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
This utility model heat pump type air conditioning system example structure figure sees Fig. 1, including compressor 01, indoor master
Heat exchanger 02, throttle part 03 and condenser 04, compressor 01 has air vent and air inlet, aerofluxus
Mouth, indoor main heat exchanger 02, throttle part 03, condenser 04 and air inlet are sequentially connected with shape by pipeline
Become circulation canal；Also including three-way valve 06 and indoor auxiliary heat exchanger 05, two ports of three-way valve 06 divide
Tong Guo not be connected with throttle part 03 and condenser 04 by pipeline, indoor auxiliary heat exchanger 05 and three-way valve 06
The 3rd port and air inlet be in turn connected to form and condenser 04 parallel-connection structure by pipeline.
By arranging indoor auxiliary heat exchanger in heat pump heating air conditioner system, auxiliary heat exchanger is formed in parallel with condenser
Structure, wherein, indoor main heat exchanger is positioned in same room with indoor auxiliary heat exchanger, heats when system is in
During pattern, the high-temperature high-pressure refrigerant of exhaust outlet of compressor flows into indoor main heat exchanger by pipeline and carries out heat friendship
Change, provide to room corresponding heat, condensed cold-producing medium to be divided by three-way valve after leading to throttle part throttling
Become two-way, road cold-producing medium cryogenic gaseous cold-producing medium after condenser evaporates, return compressor；Separately
An outer road cold-producing medium flows into indoor auxiliary heat exchanger, carries out indoor and is evaporated dehumidifying；Achieve and heat and dehumidify
Effect, native system heats and need not the auxiliary hot equipment of extra electricity in dehumidification process, and system energy consumption is relatively low.Logical
Cross threeway proportioning valve, it is simple to the flow that regulation two-way refrigeration connects, can accurately control heating effect and moisture removal.
In the present embodiment, also include cross valve 07, two ports of cross valve 07 and air vent and indoor
Main heat exchanger 02 connects, and is connected with oil eliminator parts 12 He between air vent and cross valve 07 in turn
Check valve 08, another interface of Oil-gas Separation parts 12 is connected with compressor return air tube side；Cross valve 07
Two other port be connected with condenser 04 and air inlet, connecting between air vent and cross valve 07 has
Fluid reservoir 13.
By arranging cross valve, it is that cold-producing medium realizes commutation, it is achieved that the heating and making of heat pump type air conditioner system
Two kinds of cold functions；Check valve prevents refrigerant return to the air vent of compressor；In oil eliminator parts one
Part oil flows to the air return end of compressor, it is ensured that the lubrication of compressor；Another working medium passes through check valve
Flow into main heat exchanger；Fluid reservoir is again gas-liquid separator, prevents big quantity of fluid from entering compressor, it is allowed to a small amount of
Refrigeration oil returns to compressor.
In the present embodiment, it is provided with coolant stream in restriction conduit between indoor auxiliary heat exchanger 05 and air inlet
To the check valve 08 of air inlet.
By arranging check valve, it is ensured that the cold-producing medium in compressor will not reversely be flowed into indoor auxiliary heat exchanger
In.
In the present embodiment, heat pump type air conditioner system also includes and indoor main heat exchanger 02 and indoor pair heat exchange
Device 05 is set together the humidification system 09 for increasing indoor humidity.When indoor humidity is too low or exceeds
During established standards, start humidification system, for indoor humidification, it is possible to achieve the control of indoor constant temperature and humidity,
Improve the comfort level of indoor environment.
In the present embodiment, the first port of condenser 03 is also associated with pressure transducer 10, condenser 03
Being provided with blower fan, blower fan is electrically connected with fan speed regulation device 11, fan speed regulation device 11 and pressure transducer 10
Electrical connection.
Condensation fan is adjustable speed blower fan, by the pressure of pressure transducer detection condensator outlet cold-producing medium
Feed back to fan speed regulation device and blower fan is carried out rotating speed tune, thus control system operating pressure, it is ensured that system exists
Reliability service under the conditions of various.
In the present embodiment, between cross valve 07 and condenser 04 and pressure transducer 10 and three-way valve
Stop valve it is provided with between 06.It is easy to stable operation and the maintenance of system.
The present embodiment is selected electric expansion valve select frequency-changeable compressor as throttle part, compression.
In a particular embodiment, other kinds of throttle part, such as capillary tube and thermal expansion valve can be selected
Deng.
This utility model heat pump type air conditioning system embodiment heats dehumidification mode refrigerant flow direction figure and sees Fig. 2,
When system is in heating mode, cold-producing medium passes through oil eliminator parts 12 by separating of oil through compressor 01
Out, on the one hand refrigeration oil is returned to compressor 01 return-air tube side by oil return capillary tube, meets compressor 01
The refrigeration oil having abundance under various conditions is lubricated；On the other hand from oil eliminator parts 12 out
High-temperature high-pressure refrigerant flows into indoor main heat exchanger 02 by check valve 08 and cross valve 07 and carries out heat exchange,
There is provided corresponding heat to room, condensed cold-producing medium passes through three-way valve 06 after leading to throttle part 03 throttling
Being divided into two-way, a road cold-producing medium enters condenser 04, after evaporation through stop valve 14, pressure transducer 10
Cryogenic gaseous cold-producing medium enter 13 fluid reservoirs through stop valve 14 and cross valve 07, return compression
Machine；An other road cold-producing medium flows into indoor auxiliary heat exchanger 05, carries out indoor and is evaporated dehumidifying, then leads to
Cross check valve 08 and enter 13 fluid reservoirs, return compressor；Achieve the effect heating and dehumidifying.
If need not indoor dehumidification, heat pump type air conditioning system only carries out heating mode, controls three-way valve 06 true
Protect cold-producing medium and do not enter indoor auxiliary heat exchanger 05, only enter condenser 04 and carry out heat exchange.
In this utility model heat pump type air conditioning system embodiment, refrigeration mode refrigerant flow direction figure sees Fig. 3, when being
System is when being in refrigeration mode, cold-producing medium through compressor 01 by oil eliminator parts 12 by separating of oil out,
On the one hand refrigeration oil is returned to compressor 01 return-air tube side by oil return capillary tube, meets compressor 01 at various bars
The refrigeration oil having abundance under part is lubricated；On the other hand from oil eliminator parts 12 High Temperature High Pressure out
Cold-producing medium is flowed into condenser 04 condensed by check valve 08 and cross valve 07, and now off-premises station passes through
10 detection condensers 04 export the pressure feedback of cold-producing medium, to fan speed regulation device 11, blower fan are carried out rotating speed tune,
Thus control system operating pressure, it is ensured that system reliability service under various conditions, through 06 to restriction
Part 03 throttles, and enters indoor main heat exchanger 02 and is evaporated heat exchange, to room cooling.Evaporation and heat-exchange
After become low-pressure gaseous refrigerant and flow to fluid reservoir 13 by cross valve 07, return compressor 01, so
Circular flow.
In description of the present utility model, it is to be understood that term " " center ", " length ", " width
Degree ", " on ", D score, " vertically ", " level ", " top ", " end ", the finger such as " interior "
The orientation shown or position relationship, for based on orientation shown in the drawings or position relationship, are for only for ease of description originally
Utility model and simplification describe rather than indicate or imply that the device of indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ",
" connect ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be
Removably connect, or integral；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can
To be connection or the interaction relationship of two elements of two element internals.Ordinary skill for this area
For personnel, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it
On " " or D score can include that the first and second features directly contact, it is also possible to include first and second
Feature is not directly contact but by the other characterisation contact between them.And, fisrt feature is
Two features " on ", on " top " and " above " include that fisrt feature is directly over second feature and tiltedly
Side, or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature is at second feature " it
Under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Represent that fisrt feature level height is less than second feature.
Above heat pump type air conditioner system of the present utility model is described in detail, used herein specifically
Principle of the present utility model and embodiment are set forth by individual example.The explanation of above example is only intended to
Help to understand core concept of the present utility model；Simultaneously for one of ordinary skill in the art, according to this
The thought of utility model, the most all will change, in sum,
This specification content should not be construed as restriction of the present utility model.
Claims (10)
1. a heat pump type air conditioner system, including compressor (01), indoor main heat exchanger (02), restriction
Part (03) and condenser (04), described compressor (01) has air vent and an air inlet, described air vent,
Described indoor main heat exchanger (02), described throttle part (03), described condenser (04) and air inlet lead to
Piping is in turn connected to form circulation canal；It is characterized in that, also include that three-way valve (06) and indoor pair are changed
Hot device (05), two ports of described three-way valve (06) are respectively by pipeline and described throttle part (03)
Connect with described condenser (04), the of described indoor auxiliary heat exchanger (05) and described three-way valve (06)
Three ports and described air inlet are in turn connected to form and described condenser (04) parallel-connection structure by pipeline.
Heat pump type air conditioner system the most according to claim 1, it is characterised in that described three-way valve (06)
For threeway proportioning valve.
Heat pump type air conditioner system the most according to claim 1, it is characterised in that also include cross valve (07),
Four ports of described cross valve (07) by pipeline respectively with described air vent, described indoor main heat exchanger
(02), described condenser (04) is corresponding with air inlet connects.
Heat pump type air conditioner system the most according to claim 3, it is characterised in that described indoor secondary heat exchange
It is provided with coolant in restriction conduit on pipeline between device (05) and described air inlet to flow to described indoor pair and change
The check valve (08) of hot device (05).
5. according to the heat pump type air conditioner system described in any one of Claims 1-4, it is characterised in that described joint
Stream unit (03) is capillary tube, heating power expansion valve or electric expansion valve.
6. according to the heat pump type air conditioner system described in any one of Claims 1-4, it is characterised in that described heat
Pump-type air conditioning system also includes being arranged on described indoor main heat exchanger (02) and indoor auxiliary heat exchanger (05)
Together for increasing the humidification system (09) of indoor humidity.
7. according to the heat pump type air conditioner system described in any one of Claims 1-4, it is characterised in that described cold
Connect on pipeline between condenser (04) and described three-way valve (06) and have pressure transducer (10), described cold
Condenser (04) is provided with blower fan, and described blower fan is electrically connected with fan speed regulation device (11), described fan speed regulation device
(11) electrically connect with described pressure transducer (10).
8. according to the heat pump type air conditioner system described in any one of Claims 1-4, it is characterised in that described pressure
Contracting machine (01) is variable conpacitance compressor.
Heat pump type air conditioner system the most according to claim 8, it is characterised in that described varying capacity compresses
Machine is digital scroll compressor or frequency-changeable compressor.
10. according to the heat pump type air conditioner system described in claim 3 or 4, it is characterised in that described compressor
(01) it is connected on the pipeline between air vent with described cross valve (07) and has oil eliminator parts (12), institute
The air inlet of the oil-out and described compressor (01) of stating oil eliminator parts (12) is threaded a pipe and is connected；Institute
State to be connected on the pipeline between the air inlet of compressor (01) and described cross valve (07) and have fluid reservoir (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620422062.6U CN205641301U (en) | 2016-05-10 | 2016-05-10 | Heat pump type air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620422062.6U CN205641301U (en) | 2016-05-10 | 2016-05-10 | Heat pump type air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205641301U true CN205641301U (en) | 2016-10-12 |
Family
ID=57059768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620422062.6U Expired - Fee Related CN205641301U (en) | 2016-05-10 | 2016-05-10 | Heat pump type air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205641301U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180669A (en) * | 2018-01-31 | 2018-06-19 | 广州大学 | A kind of closed multi-functional Analysis of Heat Pump Drying System and its control method |
| CN108972854A (en) * | 2018-08-06 | 2018-12-11 | 湖南三快而居住宅工业有限公司 | Precast concrete maintenance and prefabrication system |
| CN109780640A (en) * | 2019-01-22 | 2019-05-21 | 南京三尼电器设备有限公司 | A kind of connected radiant heating refrigerated air-conditioning system and operation method |
| CN110455070A (en) * | 2019-08-13 | 2019-11-15 | 湖北文理学院 | A kind of multi-state heat pump drier system and its control method |
| CN111189139A (en) * | 2018-11-14 | 2020-05-22 | 青岛经济技术开发区海尔热水器有限公司 | Heat pump system with humidity adjusting function and control method |
| CN111435007A (en) * | 2019-01-14 | 2020-07-21 | 青岛经济技术开发区海尔热水器有限公司 | Heat pump hot air heating unit with dehumidification function and control method thereof |
-
2016
- 2016-05-10 CN CN201620422062.6U patent/CN205641301U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180669A (en) * | 2018-01-31 | 2018-06-19 | 广州大学 | A kind of closed multi-functional Analysis of Heat Pump Drying System and its control method |
| CN108972854A (en) * | 2018-08-06 | 2018-12-11 | 湖南三快而居住宅工业有限公司 | Precast concrete maintenance and prefabrication system |
| CN108972854B (en) * | 2018-08-06 | 2020-06-26 | 湖南三一快而居住宅工业有限公司 | Precast concrete maintenance and prefabricating system |
| CN111189139A (en) * | 2018-11-14 | 2020-05-22 | 青岛经济技术开发区海尔热水器有限公司 | Heat pump system with humidity adjusting function and control method |
| CN111435007A (en) * | 2019-01-14 | 2020-07-21 | 青岛经济技术开发区海尔热水器有限公司 | Heat pump hot air heating unit with dehumidification function and control method thereof |
| CN109780640A (en) * | 2019-01-22 | 2019-05-21 | 南京三尼电器设备有限公司 | A kind of connected radiant heating refrigerated air-conditioning system and operation method |
| CN110455070A (en) * | 2019-08-13 | 2019-11-15 | 湖北文理学院 | A kind of multi-state heat pump drier system and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205641301U (en) | Heat pump type air conditioning system | |
| CN104964343B (en) | A kind of device and method improving compressor operating reliability | |
| CN201569203U (en) | Evaporative cooling type temperature-adjustable dehumidifier unit | |
| US8117855B2 (en) | Refrigeration system with consecutive expansions and method | |
| CN105588356B (en) | A kind of refrigeration system and its control method | |
| CN103615836B (en) | A kind of screw total heat recovery air-cooled heat-pump air-conditioner group | |
| CN205747570U (en) | Evaporating type condensing air conditioner heat pump system | |
| CN104596143B (en) | The wet decoupling of heat based on non-azeotropic working medium processes air conditioning system | |
| CN105627612B (en) | The refrigeration control method of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner | |
| CN102628626B (en) | Air conditioning dehumidification evaporative type condensation three-work-condition cold and hot water unit | |
| CN103759468B (en) | A kind of two temperature-heat-source heat pump | |
| US20210010733A1 (en) | Air conditioning system and control method therefor | |
| CN101943449B (en) | Dual-cycle machine room energy-saving air conditioner | |
| CN106996657A (en) | Air regulator | |
| CN105526731A (en) | Evaporative condensation air-conditioning heat pump system | |
| CN214250050U (en) | Heat recovery air conditioning system | |
| CN201104049Y (en) | Full fresh air heat pump type air conditioner | |
| CN206269418U (en) | Multi-connected machine heat pump with three-level centrifugal compressor | |
| CN205783233U (en) | A kind of ultra low temperature overlapping formula heating unit | |
| CN201748574U (en) | Double-circulating type machine room energy saving air conditioner | |
| CN105841398A (en) | Ejecting flow-increasing type heat pump air conditioner system and operation method thereof | |
| CN106949657A (en) | Air-conditioning system and its control method with supercooling apparatus | |
| CN106766410A (en) | A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit | |
| CN203719237U (en) | Dual-temperature heat source heat pump system | |
| CN203595316U (en) | Screw rod type total heat recovery air-cooled heat pump air conditioning unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20210510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |