CN104154609B - Dual-system heat pump roof unit - Google Patents
Dual-system heat pump roof unit Download PDFInfo
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- CN104154609B CN104154609B CN201410378574.2A CN201410378574A CN104154609B CN 104154609 B CN104154609 B CN 104154609B CN 201410378574 A CN201410378574 A CN 201410378574A CN 104154609 B CN104154609 B CN 104154609B
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Abstract
The invention discloses a dual-system heat pump roof unit and belongs to the field of central air conditioners. The dual-system heat pump roof unit comprises two refrigerating and heating units which are respectively connected with an air system. The refrigerating and heating units are a main air conditioning system I and an auxiliary air conditioning system II which are independent and same in structure. Each of the main air conditioning system and the auxiliary air conditioning system comprises a compressor, a four-way valve, an outdoor fin type air-cooling condenser, an axial flow fan, a liquid storage barrel, a filter, an expansion valve, one-way valves and an electromagnetic valves, and all parts are connected through copper pipes. The air system is composed of a return air valve, a fresh air valve, a plate type air filter, fin heat exchangers, an air supply fan and an air supply valve, which are sequentially connected and mounted in a static pressure tank to form the closed air system. The dual-system heat pump roof unit is an energy-saving heating way and solves the problems of low-temperature heat attenuation and defrosting in winter, so that the unit can continuously supply sufficient heat without auxiliary heat sources in areas having high heat load demands in winter, and energy conservation is realized.
Description
Technical field
The invention belongs to field of central air-conditioning, particularly to a kind of dual system heat pump rooftop unit.
Background technology
Roof machine is the modular overall unit of a kind of all-air system inside field of central air-conditioning, and collection freezes, heats, sending
Wind, air cleaning, electrical control etc., are widely applied in occasions such as theater, market, dining room, bars in recent years, but
The northern China heat supply in winter demand roof machine common more than the area of summer cooling demand is but difficult to meet use requirement；
Although some roof machine winters can heat, heating effect is undesirable, and the decline with temperature, and heating capacity also can be with
Decay, but thermic load is as rising, and causes shortage of heat.
Heat pump all can have defrosting problem, and due to being freon and air direct heat transfer, conventional roof machine defrosts roof machine
When typically will be in housing or indoor absorption heat, it is long to have a defrosting time, the shortcomings of so that indoor temperature is declined.
Content of the invention
The purpose of the present invention is to propose to a kind of dual system heat pump rooftop unit is it is characterised in that dual system heat pump rooftop machine
Group is connected on a set of wind system by two sets of refrigerating and heating machine groups and forms；Described two sets of cooling and warming units are independent for two sets
, the main air-conditioning system of structure identical and from air-conditioning system, include compressor, cross valve, outdoor finned air-cooled cold respectively
Condenser, axial flow blower, liquid storing barrel, filter, expansion valve, check valve and magnetic valve, are connected by copper pipe between each part and form.
Described wind system is by return air air lock, fresh air air lock, panel air filter, finned heat exchanger, air feed blower fan and confession
Wind air lock is sequentially connected, and is arranged in plenum chamber and forms airtight wind system；Wherein finned heat exchanger is provided with e, f, g, h tetra- and connects
Mouthful.
Described dual system heat pump rooftop unit overall structure be two sets independent, the main air-conditioning system of structure identical and from
Air-conditioning system；During refrigeration, in main air-conditioning system, the exhaust outlet of compressor 1 is connected with a mouth of cross valve 2, cross valve 2
B is connected to the finned air-cooled condenser 3 of outdoor, and finned air-cooled condenser 3 is connected to the first check valve 4 and the second check valve
On 5 common node, after the second check valve 5, reservoir 6, filter 7, liquid-sighting glass 8, magnetic valve 9 and expansion valve 10 series connection, even
It is connected on the common node between the first check valve 4 and the 3rd check valve 11, forms refrigerating state expansion assembly, refrigerating state is swollen
Swollen assembly is connected to the fin heat exchange in air cooling system by the common node between the 3rd check valve 11 and the 4th check valve 12
The e mouth of device 13, the f mouth of finned heat exchanger 13 connects the d mouth of cross valve 2, and the c mouth of cross valve 2 connects gas-liquid separator 14, gas-liquid
Separator 14 connects compressor 1, composition refrigeration interior circulation series loop；When heating, the d mouth of cross valve 2 connects finned heat exchanger
13 f mouth, the e mouth of finned heat exchanger 13 is connected on the common node between the 3rd check valve 11 and the 4th check valve 12, the
Four check valves 12, reservoir 6, filter 7, liquid-sighting glass 8, magnetic valve 9, expansion valve 10, the first check valve 4 are connected, and composition heats
State expansion assembly, heats state expansion assembly and is connected to fin by the common node of the first check valve 4 and the second check valve 5
Formula air-cooled condenser 3；Finned air-cooled condenser 3 connects the b mouth of cross valve 2, and the c mouth of cross valve 2 connects gas-liquid separator 14,
Gas-liquid separator 14 connects compressor 1 composition and heats interior circulation series loop；
From air-conditioning system, system architecture is identical with main air-conditioning system, and simply the 3rd check valve 11 and the 4th is unidirectional
Common node between valve 12 is connected to finned air-cooled condenser 3, the common node of the first check valve 4 and the second check valve 5
It is connected to the g mouth of finned heat exchanger 13.
Described wind system is by return air air lock 15, fresh air air lock 16, panel air filter 17, finned heat exchanger 13, air feed
Blower fan 18 and air feed air lock 19 are sequentially connected, and are arranged on the airtight wind system wind system of composition in plenum chamber 20 and include wind system shell
Body and the cooling and warming air treatment system being made up of internals sequential communication；Fresh air passes through fresh air air lock 16, return air leads to
Cross the mixing section mixing that return air air lock 15 enters housing, mixed air enters panel air filter 17 and filters, after filtration
Air pass through air cooling system housing in finned heat exchanger 13 be cooled or heated, then by air feed blower fan 18 pass through supply
Field of employment delivered to by wind air lock 19.
Described main air-conditioning system and from air-conditioning system, two sets of systems all according to 70% design of summer maximum heating load,
Main air-conditioning system is only had to run in the case of season or extreme high temperature in the middle of summer, compressor is that digital variable volume is vortexed
Compressor, compressor controller automatically adjusts compressor capacity by detecting environmental working condition, realizes downloading on compressor；Summer is high
Warm weather or winter worst cold case adopt main air-conditioning system full load to run, from variable air-conditioner system capacity portions load fortune
OK, ventilation temperature is realized all the time by compressor controller constant；Defrosting operating condition separately defrosts for two sets of systems.
The invention has the beneficial effects as follows due to inherently a kind of heating system of energy-conservation of heat pump, therefore solving Low Temperature Thermal
The problem of the problem of amount decay and winter frost removing is so that the dual system heat pump rooftop unit larger area of thermal load demands in the winter time
Enough heat supplies can be continued in the case of being not required to auxiliary thermal source, decrease the burning of fossil fuels, serve the purpose of energy-conservation.
And defrosting operating condition separately defrosts for two sets of systems, do not stop during defrosting heating and being capable of quickly defrosting.
Brief description
Fig. 1 is dual system heat pump rooftop unit schematic diagram.
Fig. 2 is air cooling system structural representation.
Fig. 3 is Fig. 2 top view.
Specific embodiment
The present invention proposes a kind of dual system heat pump rooftop unit.It is explained below in conjunction with the accompanying drawings.
Fig. 1 show dual system heat pump rooftop unit schematic diagram.Fig. 2, Fig. 3 show air cooling system structural representation.Institute
State dual system heat pump rooftop unit and be connected on a set of wind system by two sets of refrigerating and heating machine groups and form；Described two sets of refrigeration
Heating machine set is two sets of independent, main air-conditioning systems of structure identical and from air-conditioning system, and this two sets of air-conditioning systems are wrapped respectively
Include compressor, cross valve, outdoor finned air-cooled condenser, axial flow blower, liquid storing barrel, filter, expansion valve, check valve and electricity
Magnet valve, is connected by copper pipe between each part and forms；Described wind system is by return air air lock, fresh air air lock, panel air filter, fin
Heat exchanger, air feed blower fan and air feed air lock are sequentially connected, and are arranged in plenum chamber and form airtight wind system；Wherein finned heat exchanger
It is provided with tetra- interfaces of e, f, g, h.Below as refrigeration, heat and defrosting operating condition is described as follows:
Cooling condition: when same day environment temperature is less than 32 DEG C, only main air-conditioning system is run, and according to user's heat need
Capacity to be automatically adjusted.Operational process is that the exhaust outlet of compressor 1 is connected with a mouth of cross valve 2, and the b of cross valve 2 is connected to
Outdoor finned air-cooled condenser 3, finned air-cooled condenser 3 is connected to the public of the first check valve 4 and the second check valve 5
On node, after the second check valve 5, reservoir 6, filter 7, liquid-sighting glass 8, magnetic valve 9 and expansion valve 10 series connection, it is connected to first
On common node between check valve 4 and the 3rd check valve 11, form refrigerating state expansion assembly, refrigerating state expansion assembly leads to
Cross the e that the common node between the 3rd check valve 11 and the 4th check valve 12 is connected to the finned heat exchanger 13 in air cooling system
Mouthful, the f mouth of finned heat exchanger 13 connects the d mouth of cross valve 2, and the c mouth of cross valve 2 connects gas-liquid separator 14, gas-liquid separator
14 connection compressors 1, composition refrigeration interior circulation series loop；Operation principle is that cold-producing medium compresses formation high temperature through compressor 1
Gases at high pressure, enter outdoor finned air-cooled condenser 3, and condensation heat release becomes high temperature high pressure liquid, through 10 sections of expansion valve
Stream forms Low temperature low pressure liquid, and Low temperature low pressure liquid enters the finned heat exchanger 13 in air cooling system, and evaporation endothermic becomes low temperature
Low-pressure gas returns to compressor and re-compresses.Start from air-conditioning system when outdoor temperature is more than 32 DEG C, and become according to cold
Change sub-load or full load is run, flow process is identical with main air-conditioning system process, is not just repeating；Main air-conditioning system, from
In air-conditioning system, compressor is variable conpacitance compressor, can carry out load increase and decrease according to leaving air temp.
Heating condition: when environment temperature is higher than 0 DEG C, only main air-conditioning system is run, and is needed certainly according to user's heat
Dynamic pondage；The d mouth of the cross valve 2 of its main air-conditioning system connects the f mouth of finned heat exchanger 13, the e mouth of finned heat exchanger 13
It is connected on the common node between the 3rd check valve 11 and the 4th check valve 12, the 4th check valve 12, reservoir 6, filter
7th, liquid-sighting glass 8, magnetic valve 9, expansion valve 10, the first check valve 4 are connected, and composition heats state expansion assembly, and the state that heats expands
Assembly is connected to finned air-cooled condenser 3 by the common node of the first check valve 4 and the second check valve 5；Finned air-cooled
Condenser 3 connects the b mouth of cross valve 2, and the c mouth of cross valve 2 connects gas-liquid separator 14, and gas-liquid separator 14 connects compressor 1
Composition heats interior circulation series loop；Start from air-conditioning system when environment temperature is less than 0 DEG C, and according to cold changing unit
Load or full load are run, and system compressors are variable conpacitance compressor, can carry out load increase and decrease according to leaving air temp.
Defrosting operating condition:
Defrosting is carried out using alternate form, two sets of system conditions contrary operating mode during defrosting, runs defrosting mould mould
The system of formula now runs cooling condition, and the outdoor fan except defrosting system stops operating, compressor varying capacity, 70% load output.
Run the system standard heating operation of heating condition, compressor 100% load exports.Finned heat exchanger 13 in air cooling system this
When half be evaporimeter except defrosting system, half is the condenser of heating, except defrosting system 60% runs during defrosting, air feed wind
Machine does not turn, and condensation temperature can be very high, and such refrigerant flow can diminish, and the refrigerating capacity except defrosting system also can diminish.But heat pump
System is 100% load running, and the heating capacity of finned heat exchanger 13 is more than refrigerating capacity at least 50%, and such system is still in heat supply.
After the completion of one defrosting, two exchange models, are another defrosting.After the completion of all defrosting, unit continues normal work.
Claims (1)
1. a kind of dual system heat pump rooftop unit, dual system heat pump rooftop unit is connected to one by two sets of refrigerating and heating machine groups
Form on set wind system；Described two sets of cooling and warming units are two sets of independent, main air-conditioning systems of structure identical and from air-conditioning
System, main air-conditioning system and include compressor, cross valve, outdoor finned air-cooled condenser, axle respectively from air-conditioning system
Flow fan, liquid storing barrel, filter, expansion valve, check valve and magnetic valve, are connected by copper pipe between each part and form；
Described wind system is by return air air lock, fresh air air lock, panel air filter, finned heat exchanger, air feed blower fan and air feed wind
Lock is sequentially connected, and is arranged in plenum chamber and forms airtight wind system；Wherein finned heat exchanger is provided with tetra- interfaces of e, f, g, h；
It is characterized in that, described dual system heat pump rooftop unit overall structure be two sets independent, the main air-conditioning system of structure identical and
From air-conditioning system；During refrigeration, in main air-conditioning system, the exhaust outlet of compressor (1) is connected with a mouth of cross valve (2), and four
The b of port valve (2) is connected to the finned air-cooled condenser (3) of outdoor, and finned air-cooled condenser (3) is connected to the first check valve
(4) on the common node of and the second check valve (5), the second check valve (5), reservoir (6), filter (7), liquid-sighting glass (8), electricity
After magnet valve (9) and expansion valve (10) series connection, it is connected to the common node between the first check valve (4) and the 3rd check valve (11)
On, form refrigerating state expansion assembly, refrigerating state expansion assembly pass through the 3rd check valve (11) and the 4th check valve (12) it
Between common node be connected to the e mouth of the finned heat exchanger (13) in air cooling system, the f mouth of finned heat exchanger (13) connects four-way
The d mouth of valve (2), the c mouth of cross valve (2) connects gas-liquid separator (14), and gas-liquid separator (14) connects compressor (1), composition
Refrigeration interior circulation series loop；When heating, the d mouth of cross valve (2) connects the f mouth of finned heat exchanger (13), finned heat exchanger
(13) e mouth is connected on the common node between the 3rd check valve (11) and the 4th check valve (12), the 4th check valve (12),
Reservoir (6), filter (7), liquid-sighting glass (8), magnetic valve (9), expansion valve (10), the first check valve (4) series connection, composition heats
State expansion assembly, is heated state expansion assembly and is connected to by the common node of the first check valve (4) and the second check valve (5)
Finned air-cooled condenser (3)；Finned air-cooled condenser (3) connects the b mouth of cross valve (2), and the c mouth of cross valve (2) connects
Gas-liquid separator (14), gas-liquid separator (14) connects compressor (1) composition and heats interior circulation series loop；
From air-conditioning system, system architecture is identical with main air-conditioning system, simply the 3rd check valve (11) and the 4th check valve
(12) common node between is connected to finned air-cooled condenser (3), the public affairs of the first check valve (4) and the second check valve (5)
Conode is connected to the g mouth of finned heat exchanger (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378574.2A CN104154609B (en) | 2014-08-04 | 2014-08-04 | Dual-system heat pump roof unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410378574.2A CN104154609B (en) | 2014-08-04 | 2014-08-04 | Dual-system heat pump roof unit |
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| Publication Number | Publication Date |
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| CN104154609A CN104154609A (en) | 2014-11-19 |
| CN104154609B true CN104154609B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410378574.2A Active CN104154609B (en) | 2014-08-04 | 2014-08-04 | Dual-system heat pump roof unit |
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| CN104913435B (en) * | 2015-05-12 | 2022-01-18 | 珠海格力电器股份有限公司 | Air conditioning system, air conditioner and control method thereof |
| CN106476565B (en) * | 2016-10-25 | 2019-03-26 | 珠海格力电器股份有限公司 | Heat pump air conditioning unit, control method thereof and electric motor coach |
| CN108613333B (en) * | 2016-12-26 | 2023-07-04 | 成都三益福达机械设备制造有限公司 | Low-temperature variable air volume energy-saving purifying air conditioning system |
| CN107763887B (en) * | 2017-11-03 | 2020-08-04 | 广东芬尼能源技术有限公司 | Energy level control method and control device for dual-system heat pump unit |
| CN108471066B (en) * | 2018-02-07 | 2024-02-27 | 酷仑冷却技术（上海）有限公司 | Closed cooling system for container type converter |
| CN109357434A (en) * | 2018-11-29 | 2019-02-19 | 四川长虹空调有限公司 | It is a kind of based on the air-conditioning of double-compressor indoor temperature control system in parallel with heat transfer unit (HTU) |
| CN113294927A (en) * | 2020-02-21 | 2021-08-24 | 艾默生环境优化技术(苏州)有限公司 | Heat pump device and drying equipment |
| CN114061106B (en) * | 2021-11-24 | 2023-06-30 | 美的集团武汉制冷设备有限公司 | Control method, device, equipment and storage medium of air conditioning system |
| CN114001437B (en) * | 2021-11-24 | 2023-03-31 | 美的集团武汉制冷设备有限公司 | Control method, device and equipment of fresh air equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388420A (en) * | 1993-02-22 | 1995-02-14 | Mitsubishi Denki Kabushiki Kaisha | Heat storage type air conditioner, and defrosting method |
| CN1286375A (en) * | 1999-08-27 | 2001-03-07 | 李永强 | Domestic central air conditioner with more compressors |
| CN2682342Y (en) * | 2003-11-14 | 2005-03-02 | 河南新飞电器有限公司 | Pipe supplied air type air conditioning unit with multi-compressor |
| CN202747496U (en) * | 2012-09-24 | 2013-02-20 | 佛山市顺德区高美空调设备有限公司 | Movable air-cooled module unit |
| CN103925659A (en) * | 2014-04-25 | 2014-07-16 | 中康韦尔(保定)环境科技有限公司 | Central air conditioning system |
-
2014
- 2014-08-04 CN CN201410378574.2A patent/CN104154609B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388420A (en) * | 1993-02-22 | 1995-02-14 | Mitsubishi Denki Kabushiki Kaisha | Heat storage type air conditioner, and defrosting method |
| CN1286375A (en) * | 1999-08-27 | 2001-03-07 | 李永强 | Domestic central air conditioner with more compressors |
| CN2682342Y (en) * | 2003-11-14 | 2005-03-02 | 河南新飞电器有限公司 | Pipe supplied air type air conditioning unit with multi-compressor |
| CN202747496U (en) * | 2012-09-24 | 2013-02-20 | 佛山市顺德区高美空调设备有限公司 | Movable air-cooled module unit |
| CN103925659A (en) * | 2014-04-25 | 2014-07-16 | 中康韦尔(保定)环境科技有限公司 | Central air conditioning system |
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| CN104154609A (en) | 2014-11-19 |
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