CN104154609A - Dual-system heat pump roof unit - Google Patents
Dual-system heat pump roof unit Download PDFInfo
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- CN104154609A CN104154609A CN201410378574.2A CN201410378574A CN104154609A CN 104154609 A CN104154609 A CN 104154609A CN 201410378574 A CN201410378574 A CN 201410378574A CN 104154609 A CN104154609 A CN 104154609A
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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 a kind of dual system heat pump roof unit.
Background technology
Roof machine is the modular whole unit of a kind of all-air system of field of central air-conditioning the inside, integrate refrigeration, heat, air-supply, air cleaning, electrical control etc., in recent years in occasions such as theater, market, dining room, bars, be widely applied, but be difficult to meet instructions for use for the common roof machine in area that northern China heat supply in winter demand is greater than summer cooling demand; Although some roof machines can heat winter, heating effect is undesirable, and follows the decline of temperature, and heating capacity also can be along with decay, but thermic load is along with rising, has caused shortage of heat.
Heat pump all can have defrosting problem, and roof machine is owing to being freon and air direct heat transfer, generally all will be in housing or indoor absorption heat during conventional roof machine defrosting, there is defrosting time long, and make degradation shortcoming under indoor temperature.
Summary of the invention
The object of the invention is to propose a kind of dual system heat pump roof unit, it is characterized in that, dual system heat pump roof unit is connected on a set of wind system and is formed by two cover refrigerating and heating machine groups; Described two cover cooling and warming units be two covers independently, the main air-conditioning system I that structure is identical and from air-conditioning system II, comprise respectively compressor, cross valve, outdoor finned air-cooled condenser, axial flow blower, liquid storing barrel, filter, expansion valve, check valve and magnetic valve, between each parts, by copper pipe, connected to form.
Described wind system is by return air air lock, new wind air lock, and panel air filter, finned heat exchanger, air feed blower fan and air feed air lock are connected successively, is arranged on the airtight wind system of composition in plenum chamber; Wherein finned heat exchanger is provided with E, F, G, tetra-interfaces of H.
Described dual system heat pump roof unit overall structure be two covers independently, the main air-conditioning system I that structure is identical and from air-conditioning system II, during refrigeration, in main air-conditioning system I, the exhaust outlet of compressor 1 is connected with a mouth of cross valve 2, the b of cross valve 2 is connected to outdoor finned air-cooled condenser 3, finned air-cooled condenser 3 is connected on the common node of the first check valve 4 and the second check valve 5, the second check valve 5, reservoir 6, filter 7, liquid-sighting glass 8, after magnetic valve 9 and expansion valve 10 series connection, be connected on the common node between the first check valve 4 and the 3rd check valve 11, form refrigerating state expansion assembly, refrigerating state expansion assembly is connected to the E mouth of the finned heat exchanger 13 in air cooling system by the common node between the 3rd check valve 11 and the 4th check valve 12, the F mouth of finned heat exchanger 13 connects the d mouth of cross valve 2, the c mouth of cross valve 2 connects gas-liquid separator 14, gas-liquid separator 14 connects compressor 1, form circulating series loop in refrigeration, while heating, the d mouth of cross valve 2 connects the F mouth of finned heat exchanger 13, 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 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, form and to heat state expansion assembly, heat the common node of state expansion assembly by the first check valve 4 and the second check valve 5 and be connected to 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, and gas-liquid separator 14 connects compressor 1 composition and heats interior circulating series loop,
From air-conditioning system II, system architecture is identical with main air-conditioning system I, the common node that just common node between the 3rd check valve 11 and the 4th check valve 12 is connected to finned air-cooled condenser 3, the first check valves 4 and the second check valve 5 is connected to the G mouth of finned heat exchanger 13.
Described wind system is by return air air lock 15, new wind air lock 16, panel air filter 17, finned heat exchanger 13, air feed blower fan 18 and air feed air lock 19 are connected successively, are arranged on the airtight wind system wind system of the interior composition of plenum chamber 20 and comprise wind system housing and by internals order, be communicated with the cooling and warming air treatment system forming; The mixing section that new wind enters housing by new wind air lock 16, return air by return air air lock 15 mixes, mixed air enters panel air filter 17 and filters, air after filtration is cooled or is heated by the finned heat exchanger 13 in air cooling system housing, then by air feed blower fan 18, by air feed air lock 19, delivers to field of employment.
Described main air-conditioning system I and from air-conditioning system II, two cover systems are all according to 70% design of maximum heating load in summer, in the middle of summer, in the situation of season or non-thermal extremes, only has main air-conditioning system I operation, compressor is digital variable volume screw compressor, compressor controller regulates compressor capacity automatically by testing environment operating mode, realizes on compressor and downloading; Summer high temperature weather or winter worst cold case adopt the operation of main air-conditioning system I full load, from the operation at part load of air-conditioning system II varying capacity, by compressor controller, realize all the time ventilation temperature constant; Defrosting operating condition is the separately defrostings of two cover systems.
The invention has the beneficial effects as follows because heat pump itself is exactly a kind of energy-conservation heating system, therefore the problem of low-temperature heat quantity decay and the problem of winter frost removing have been solved, make the unit area that thermic load demand is larger in the winter time, dual system heat pump roof can in the situation that not needing auxiliary thermal source, continue enough heat supplies, reduce the burning of ore fuel, played energy-conservation object.And defrosting operating condition is the separately defrostings of two cover systems, during defrosting, do not stop heating and can quickly defrosting.
Accompanying drawing explanation
Fig. 1 is dual system heat pump roof unit schematic diagram.
Fig. 2 is air cooling system structural representation.
Fig. 3 is Fig. 2 top view.
The specific embodiment
The present invention proposes a kind of dual system heat pump roof unit.Below in conjunction with accompanying drawing, be explained.
Figure 1 shows that dual system heat pump roof unit schematic diagram.Fig. 2, Figure 3 shows that air cooling system structural representation.Described dual system heat pump roof unit is connected on a set of wind system and is formed by two cover refrigerating and heating machine groups; Described two cover cooling and warming units be two covers independently, the main air-conditioning system I that structure is identical and from air-conditioning system II, this two covers air-conditioning system comprises respectively compressor, cross valve, outdoor finned air-cooled condenser, axial flow blower, liquid storing barrel, filter, expansion valve, check valve and magnetic valve, between each parts, by copper pipe, is connected to form; Described wind system is by return air air lock, new wind air lock, and panel air filter, finned heat exchanger, air feed blower fan and air feed air lock are connected successively, is arranged on the airtight wind system of composition in plenum chamber; Wherein finned heat exchanger is provided with E, F, G, tetra-interfaces of H.Below according to refrigeration, heat and defrosting operating condition is described below:
Cooling condition: when the same day, environment temperature was less than 32 ℃, only have main air-conditioning system I operation, and according to the automatic pondage of user's caloric requirement.Operational process is, the exhaust outlet of compressor 1 is connected with a mouth of cross valve 2, the b of cross valve 2 is connected to outdoor finned air-cooled condenser 3, finned air-cooled condenser 3 is connected on the common node of the first check valve 4 and the second check valve 5, the second check valve 5, reservoir 6, filter 7, liquid-sighting glass 8, after magnetic valve 9 and expansion valve 10 series connection, be connected on the common node between the first check valve 4 and the 3rd check valve 11, form refrigerating state expansion assembly, refrigerating state expansion assembly is connected to the E mouth of the finned heat exchanger 13 in air cooling system by the common node between the 3rd check valve 11 and the 4th check valve 12, the F mouth of finned heat exchanger 13 connects the d mouth of cross valve 2, the c mouth of cross valve 2 connects gas-liquid separator 14, gas-liquid separator 14 connects compressor 1, form circulating series loop in refrigeration, operation principle is that through compressor, 1 compression forms high temperature and high pressure gas to cold-producing medium, enter outdoor finned air-cooled condenser 3, condensation heat release becomes high temperature high pressure liquid, through expansion valve 10, dam and form low-temp low-pressure liquid, low-temp low-pressure liquid enters the finned heat exchanger 13 in air cooling system, and evaporation endothermic becomes low-temp low-pressure gas to be got back to compressor and again compress.When outdoor temperature is greater than 32 ℃, start from air-conditioning system II, and according to cold changing unit load or full load operation, flow process is identical with main air-conditioning system I process, is not just repeating; Main air-conditioning system I, from air-conditioning system II, compressor is variable conpacitance compressor, can carry out load increase and decrease according to leaving air temp.
Heating condition: when environment temperature is during higher than 0 ℃, only have main air-conditioning system I operation, and according to the automatic pondage of user's caloric requirement; The d mouth of the cross valve 2 of its main air-conditioning system I connects the F mouth of finned heat exchanger 13, 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 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, form and to heat state expansion assembly, heat the common node of state expansion assembly by the first check valve 4 and the second check valve 5 and be connected to 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, and gas-liquid separator 14 connects compressor 1 composition and heats interior circulating series loop; When environment temperature starts from air-conditioning system II during lower than 0 ℃, and according to cold changing unit load or full load operation, system compresses machine is variable conpacitance compressor, can carry out load increase and decrease according to leaving air temp.
Defrosting operating condition:
Defrosting adopts form alternately to carry out, the contrary operating mode of two cover system operating conditions during defrosting, and the system of operation defrosting mould pattern is running refrigerating operating mode now, and the outdoor fan of defrost system stops operating, compressor variable capacity, 70% load output.The system standard heating operation of operation heating condition, compressor 100% load output.Finned heat exchanger 13 in air cooling system is half evaporimeter that is defrost system now, half condenser that is heating, defrost system 60% operation during defrosting, air feed blower fan does not turn, condensation temperature can be very high, and refrigerant flow can diminish like this, and the refrigerating capacity of defrost system also can diminish.Yet heat pump is 100% load running, and the heating capacity of finned heat exchanger 13 is greater than refrigerating capacity at least 50%, and system is still in heat supply like this.After a defrosting completes, two exchange models, are another defrosting.The rear unit that all defrosted continues normal work.
Claims (4)
1. a dual system heat pump roof unit, is characterized in that, dual system heat pump roof unit is connected on a set of wind system and is formed by two cover refrigerating and heating machine groups; Described two cover cooling and warming units be two covers independently, the main air-conditioning system I that structure is identical and from air-conditioning system II, comprise respectively compressor, cross valve, outdoor finned air-cooled condenser, axial flow blower, liquid storing barrel, filter, expansion valve, check valve and magnetic valve, between each parts, by copper pipe, connected to form;
Described wind system is by return air air lock, new wind air lock, and panel air filter, finned heat exchanger, air feed blower fan and air feed air lock are connected successively, is arranged on the airtight wind system of composition in plenum chamber; Wherein finned heat exchanger is provided with E, F, G, tetra-interfaces of H.
2. a kind of dual system heat pump roof unit according to claim 1, is characterized in that, described dual system heat pump roof unit overall structure be two covers independently, the main air-conditioning system I that structure is identical and from air-conditioning system II, during refrigeration, in main air-conditioning system I, the exhaust outlet of compressor (1) is connected with a mouth of cross valve (2), the b of cross valve (2) is connected to outdoor finned air-cooled condenser (3), finned air-cooled condenser (3) is connected on the common node of the first check valve (4) and the second check valve (5), the second check valve (5), reservoir (6), filter (7), liquid-sighting glass (8), after magnetic valve (9) and expansion valve (10) series connection, be connected on the common node between the first check valve (4) and the 3rd check valve (11), form refrigerating state expansion assembly, refrigerating state expansion assembly is connected to the E mouth of the finned heat exchanger (13) in air cooling system by the common node between the 3rd check valve (11) and the 4th check valve (12), the F mouth of finned heat exchanger (13) connects the d mouth of cross valve (2), the c mouth of cross valve (2) connects gas-liquid separator (14), gas-liquid separator (14) connects compressor (1), form circulating series loop in refrigeration, while heating, the d mouth of cross valve (2) connects the F mouth of finned heat exchanger (13), 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 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, form and to heat state expansion assembly, heat the common node of state expansion assembly by the first check valve (4) and the second check valve (5) and be connected to 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), and gas-liquid separator (14) connects compressor (1) composition and heats interior circulating series loop,
From air-conditioning system II, system architecture is identical with main air-conditioning system I, just the common node between the 3rd check valve (11) and the 4th check valve (12) is connected to finned air-cooled condenser (3), and (common node of the 4 and second check valve (5) is connected to the G mouth of finned heat exchanger (13) to the first check valve.
3. a kind of dual system heat pump roof unit according to claim 1, it is characterized in that, described wind system is by return air air lock (15), new wind air lock (16), panel air filter (17), finned heat exchanger (13), air feed blower fan (18) and air feed air lock (19) are connected successively, are arranged on the airtight wind system wind system of composition in plenum chamber (20) and comprise wind system housing and by internals order, be communicated with the cooling and warming air treatment system forming; The mixing section that new wind enters housing by new wind air lock (16), return air by return air air lock (15) mixes, mixed air enters panel air filter (17) and filters, air after filtration is cooled or is heated by the finned heat exchanger in air cooling system housing (13), and then by air feed blower fan, (18 deliver to field of employment by air feed air lock (19).
4. a kind of dual system heat pump roof unit according to claim 1, it is characterized in that, described main air-conditioning system I and from air-conditioning system II two cover systems all according to summer maximum heating load 70% design, in the middle of summer, in the situation of season or non-thermal extremes, only has main air-conditioning system I operation, compressor is digital variable volume screw compressor, compressor controller regulates compressor capacity automatically by testing environment operating mode, realizes on compressor and downloading; Summer high temperature weather or winter worst cold case adopt the operation of main air-conditioning system I full load, from the operation at part load of air-conditioning system II varying capacity, by compressor controller, realize all the time ventilation temperature constant; Defrosting operating condition is the separately defrostings of two cover systems.
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| CN201410378574.2A CN104154609B (en) | 2014-08-04 | 2014-08-04 | Dual-system heat pump roof unit |
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| CN201410378574.2A CN104154609B (en) | 2014-08-04 | 2014-08-04 | Dual-system heat pump roof unit |
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| CN104154609A true CN104154609A (en) | 2014-11-19 |
| CN104154609B CN104154609B (en) | 2017-01-18 |
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| CN104913435A (en) * | 2015-05-12 | 2015-09-16 | 珠海格力电器股份有限公司 | Air conditioning system and air conditioner and control method thereof |
| CN106476565A (en) * | 2016-10-25 | 2017-03-08 | 珠海格力电器股份有限公司 | A kind of heat pump air conditioner unit, its control method and electric motor coach |
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| 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 |
| CN114001437A (en) * | 2021-11-24 | 2022-02-01 | 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 |
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| JP2894421B2 (en) * | 1993-02-22 | 1999-05-24 | 三菱電機株式会社 | Thermal 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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| CN104913435A (en) * | 2015-05-12 | 2015-09-16 | 珠海格力电器股份有限公司 | Air conditioning system and air conditioner and control method thereof |
| CN106476565A (en) * | 2016-10-25 | 2017-03-08 | 珠海格力电器股份有限公司 | A kind of heat pump air conditioner unit, its control method and electric motor coach |
| CN108613333A (en) * | 2016-12-26 | 2018-10-02 | 成都三益福达机械设备制造有限公司 | A kind of low temperature variable air rate energy-saving and purifying air-conditioning system |
| 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 |
| CN107763887A (en) * | 2017-11-03 | 2018-03-06 | 广东芬尼能源技术有限公司 | The control of Energy Level method and control device of a kind of dual system source pump |
| 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 |
| CN108471066A (en) * | 2018-02-07 | 2018-08-31 | 酷仑冷却技术（上海）有限公司 | One kind being used for container-type current transformer closed cooling system |
| 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 |
| CN114001437A (en) * | 2021-11-24 | 2022-02-01 | 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 |
| CN114061106A (en) * | 2021-11-24 | 2022-02-18 | 美的集团武汉制冷设备有限公司 | Control method, device and equipment of air conditioning system and storage medium |
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