CN106885303A - Sensible heat latent heat separates the air-conditioning system of control - Google Patents
Sensible heat latent heat separates the air-conditioning system of control Download PDFInfo
- Publication number
- CN106885303A CN106885303A CN201510946285.2A CN201510946285A CN106885303A CN 106885303 A CN106885303 A CN 106885303A CN 201510946285 A CN201510946285 A CN 201510946285A CN 106885303 A CN106885303 A CN 106885303A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- indoor
- indoor heat
- outdoor
- exhaust branch
- 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.)
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Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 31
- 239000003507 refrigerant Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 12
- 238000001704 evaporation Methods 0.000 description 15
- 230000008020 evaporation Effects 0.000 description 15
- 238000001816 cooling Methods 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to the air-conditioning system that a kind of sensible heat latent heat separates control, air-conditioning system includes indoor unit and outdoor unit device；Wherein, outdoor unit device includes duplex cylinder compressor, outdoor heat converter, the first reservoir and the second reservoir；Indoor unit includes the first electric expansion valve, the first indoor heat converter, the second electric expansion valve and the second indoor heat converter；Duplex cylinder compressor, outdoor heat converter, the first electric expansion valve, the first indoor heat converter and the first reservoir are sequentially connected in series the sensible heat processing system to form refrigerant circulation circulation；Duplex cylinder compressor, outdoor heat converter, the second electric expansion valve, the second indoor heat converter and the second reservoir are sequentially connected in series the latent heat processing system to form refrigerant circulation circulation；Indoor unit also includes a regenerator, and regenerator is located between the first indoor heat converter and the second indoor heat converter.
Description
Technical Field
The invention belongs to the field of air conditioning systems, and particularly relates to an air conditioning system for separating and controlling latent heat and sensible heat.
Background
The humiture of most air conditioning systems all adopts unified control at present, has following problem from this: (1) the heat and moisture combined treatment has energy waste. Because the condensation dehumidification method is adopted to remove the residual humidity in the room, the surface temperature of the evaporator needs to be lower than the dew point temperature of the indoor air, and the evaporation temperature below about 7 ℃ is needed to realize the dew point temperature of 16.6 ℃ in consideration of the heat transfer temperature difference and the medium conveying temperature difference. Therefore, in order to achieve dehumidification, the evaporation temperature is often reduced as much as possible, and the compressor is uneconomical because of the increased pressure ratio and increased input power.
(2) It is difficult to adapt to the change of the heat-moisture ratio. Usually, the indoor heat-humidity ratio changes in a larger range, the indoor humidity is reduced by reducing the evaporation temperature, the response of an air conditioning system is slower, and meanwhile, the indoor temperature after cooling is often lower and the indoor comfort is poorer.
The existing air conditioning system for sensible heat and latent heat separation control is provided with two evaporators on the indoor side, different evaporation temperatures are respectively set, wherein the high-temperature evaporator with higher evaporation temperature mainly bears sensible heat load, the low-temperature evaporator with lower evaporation temperature mainly bears latent heat load, the purposes of dehumidification and cooling can be simultaneously achieved, the air outlet temperature on the indoor side is moderate, and the comfort level is improved.
However, in the indoor unit of the conventional sensible heat and latent heat separation controlled air conditioning system, the outlet air temperature blown by the fan of the high-temperature evaporator is high, and the outlet air temperature blown by the fan of the low-temperature evaporator is low. The lower air outlet temperature of the low-temperature evaporator is poorer in human comfort if the low-temperature evaporator is directly blown to a human body.
Disclosure of Invention
In order to solve the technical problem, the invention provides an air conditioning system for sensible heat and latent heat separation control, which comprises an indoor unit device and an outdoor unit device; the outdoor unit comprises a double-cylinder compressor, an outdoor heat exchanger, a first liquid storage device and a second liquid storage device; the indoor unit device comprises a first electronic expansion valve, a first indoor heat exchanger, a second electronic expansion valve and a second indoor heat exchanger; the double-cylinder compressor, the outdoor heat exchanger, the first electronic expansion valve, the first indoor heat exchanger and the first liquid storage device are sequentially connected in series to form a sensible heat treatment system with circulating refrigerant; the double-cylinder compressor, the outdoor heat exchanger, the second electronic expansion valve, the second indoor heat exchanger and the second liquid storage device are sequentially connected in series to form a latent heat treatment system for circulating and circulating refrigerant; the indoor unit arrangement further includes a regenerator positioned between the first indoor heat exchanger and the second indoor heat exchanger.
Preferably, the exhaust side of the double-cylinder compressor is provided with a first exhaust branch and a second exhaust branch; the first exhaust branch belongs to a sensible heat treatment system; the second exhaust branch belongs to a latent heat treatment system; from the exhaust side of the double-cylinder compressor to the suction side of the double-cylinder compressor, a first exhaust branch, an outdoor heat exchanger, a first electronic expansion valve, a first indoor heat exchanger and a first liquid storage of the sensible heat treatment system are connected in parallel with a second exhaust branch, an outdoor heat exchanger, a second electronic expansion valve, a second indoor heat exchanger and a second liquid storage of the latent heat treatment system.
Preferably, the outdoor unit further comprises two four-way reversing valves, wherein a first four-way reversing valve is arranged on the first exhaust branch, and a second four-way reversing valve is arranged on the second exhaust branch; when the air conditioning system is in a refrigerating working state, the first four-way reversing valve communicates the first exhaust branch with the outdoor heat exchanger and communicates the first indoor heat exchanger with the first liquid reservoir; the second four-way reversing valve communicates the second discharge branch with the outdoor heat exchanger and communicates the second indoor heat exchanger with the second accumulator; when the air conditioning system is in a heating working state, the first four-way reversing valve is communicated with the first exhaust branch and the first indoor heat exchanger, and is communicated with the outdoor heat exchanger and the first liquid storage device; the second four-way reversing valve is communicated with the second exhaust branch and the second indoor heat exchanger and is communicated with the outdoor heat exchanger and the second liquid storage device.
The air conditioning system controlled by sensible heat and latent heat separation is additionally provided with the indoor heat regenerator, and the lower-temperature outlet air of the heat exchanger with the low evaporation temperature is preheated by utilizing the higher outlet air temperature of the heat exchanger with the high evaporation temperature, so that the outlet air temperature of the heat exchanger with the low evaporation temperature is increased and is close to the comfortable temperature of a human body, and the air conditioning system is delivered indoors.
Drawings
Fig. 1 is a schematic structural view of an air conditioning system with sensible heat and latent heat separation control according to embodiment 1 of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Example 1
As shown in fig. 1, the air conditioning system with sensible heat and latent heat separation control of the present embodiment includes an outdoor unit 1 and an indoor unit 2, wherein:
the outdoor unit device 1 includes a two-cylinder compressor 11, an outdoor heat exchanger 12, a first accumulator 13, and a second accumulator 14.
The indoor unit device 2 includes a first electronic expansion valve 21, a first indoor heat exchanger 22, a second electronic expansion valve 23, and a second indoor heat exchanger 24.
The double-cylinder compressor 11, the outdoor heat exchanger 12, the first electronic expansion valve 21, the first indoor heat exchanger 22 and the first accumulator 13 are connected in series in sequence to form a sensible heat treatment system with circulating refrigerant. The two-cylinder compressor 11, the outdoor heat exchanger 12, the second electronic expansion valve 22, the second indoor heat exchanger 24 and the second accumulator 14 are connected in series in sequence to form a latent heat treatment system with circulating refrigerant.
The indoor unit 2 further includes a regenerator 25, and the regenerator 25 is located between an outlet port (not shown) of the first indoor heat exchanger 22 and an outlet port (not shown) of the second indoor heat exchanger 24.
In this embodiment, the first indoor heat exchanger may be a heat exchanger with a high evaporation temperature, and mainly bears sensible heat load, and is also called a sensible heat evaporator under a refrigeration condition; the second indoor heat exchanger may be a low evaporation temperature heat exchanger, mainly bearing latent heat load, and is also called a latent heat evaporator under the refrigeration condition.
In the air conditioning system with sensible heat and latent heat separation control of the embodiment, a heat regenerator 25 is arranged in the indoor unit device 2, and a part of the outlet air of the first indoor heat exchanger 22 (heat exchanger with high evaporation temperature) enters the second indoor heat exchanger 24 (heat exchanger with low evaporation temperature) through the heat regenerator 25 to release heat; the outlet air of the second indoor heat exchanger 24 is preheated by the heat regenerator 25, and the outlet air at a lower temperature of the outlet of the second indoor heat exchanger 24 can be preheated to be close to the comfortable temperature of a human body and sent into the room by mixing the outlet air of the second indoor heat exchanger and the outlet air of the heat regenerator.
In the present embodiment, the exhaust side of the two-cylinder compressor 11 has a first exhaust branch 11A and a second exhaust branch 11B; the first exhaust branch 11A belongs to a sensible heat treatment system; the second exhaust branch 11B belongs to a latent heat treatment system.
In the present embodiment, as shown in fig. 1, the first exhaust branch 11A, the outdoor heat exchanger 12, the first electronic expansion valve 21, the first indoor heat exchanger 22, and the first receiver 13 of the sensible heat treatment system are disposed in parallel with the second exhaust branch 11B, the outdoor heat exchanger 12, the second electronic expansion valve 23, the second indoor heat exchanger 24, and the second receiver 14 of the latent heat treatment system from the exhaust side of the two-cylinder compressor 11 to the suction side of the two-cylinder compressor 11.
In the present embodiment, as shown in fig. 1, the outdoor unit device 1 further includes two four-way reversing valves, wherein a first four-way reversing valve 15 is disposed on the first exhaust branch 11A, and a second four-way reversing valve 16 is disposed on the second exhaust branch 11B.
When the air conditioning system is in a cooling working state, the first four-way reversing valve 15 communicates the first exhaust branch 11A with the outdoor heat exchanger 12, and communicates the first indoor heat exchanger 22 with the first reservoir 13; the second four-way selector valve 16 communicates the second discharge branch 11B with the outdoor heat exchanger 12, and communicates the second indoor heat exchanger 24 with the second accumulator 14.
When the air conditioning system is in a heating working state, the first four-way reversing valve 15 communicates the first exhaust branch 11A with the first indoor heat exchanger 22, and communicates the outdoor heat exchanger 12 with the first reservoir 13; the second four-way selector valve 16 communicates the second discharge branch 11B with the second indoor heat exchanger 24, and communicates the outdoor heat exchanger 12 with the second accumulator 14.
In the air conditioning system with sensible heat and latent heat separation control according to the embodiment, the refrigerant cycle process during cooling is as follows: a refrigerant is discharged after being compressed in the double-cylinder compressor 1, one path of the refrigerant enters the first exhaust branch 11A, then enters the outdoor heat exchanger 12 (namely a condenser) through the first four-way reversing valve 15, then enters the first indoor heat exchanger 22 (a high-temperature evaporator) through the first electronic expansion valve 21, an exhaust port of the first indoor heat exchanger 22 is communicated with the first liquid reservoir 13 through the first four-way reversing valve 15, and finally enters the double-cylinder compressor 11 from a first air inlet (not marked in the figure) of the double-cylinder compressor 11; the other path of the refrigerant enters a second exhaust branch 11B, enters the outdoor heat exchanger 12 (i.e., a condenser) through a second four-way reversing valve 16, enters a second indoor heat exchanger 24 (a low-temperature evaporator) through a second electronic expansion valve 23, an exhaust port of the second indoor heat exchanger 24 is communicated with a second liquid reservoir 14 through the second four-way reversing valve 16, and finally enters the double-cylinder compressor 11 from a second air inlet (not labeled in the figure) of the double-cylinder compressor 11.
In the air conditioning system with sensible heat and latent heat separation control according to the embodiment, the refrigerant cycle process during heating is as follows: the refrigerant is discharged after being compressed in the double-cylinder compressor 1, one path of the refrigerant enters the first exhaust branch 11A, enters the first indoor heat exchanger 22 through the first four-way reversing valve 15 (the flow direction of the refrigerant is opposite to that of the refrigeration process), enters the outdoor heat exchanger 12 through the first electronic expansion valve 21, enters the first liquid storage device 13 through the first four-way reversing valve 15, and finally enters the double-cylinder compressor 11 from a first air inlet (not marked in the figure) of the double-cylinder compressor 11; the other path enters a second exhaust branch 11B, passes through a second four-way reversing valve 16, enters a second indoor heat exchanger 24 (the flow direction of the refrigerant is opposite to that of the refrigeration process), enters the outdoor heat exchanger 12 through a second electronic expansion valve 23, passes through the second four-way reversing valve 16, enters a second liquid storage 13, and finally enters the double-cylinder compressor 11 from a first air inlet (not marked in the figure) of the double-cylinder compressor 11.
In this embodiment, the first electronic expansion valve 21 and the second electronic expansion valve 23 can respectively adjust the flow rate of the refrigerant entering the first indoor heat exchanger 22 and the second indoor heat exchanger 24 and the air volume of the indoor unit, so as to achieve two different evaporation temperatures, for example, the evaporation temperatures of the two evaporators can be respectively set to 18 ℃ and 8 ℃, so as to respectively achieve the cooling and dehumidifying functions, and achieve the heat exchange and air circulation through the indoor fan.
The air conditioning system of sensible heat and latent heat separation control of this embodiment can be applied to domestic air conditioning refrigerating system, also can be applied to vehicle air conditioning refrigerating system, and its equipment is simple and easy, need not to dispose special dehumidification equipment, like runner dehumidification equipment etc. only through adjusting two parallelly connected evaporimeter temperatures that set up, reaches the purpose of dehumidification, cooling.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (3)
1. An air conditioning system for sensible heat and latent heat separation control is characterized in that:
the air conditioning system comprises an indoor unit device and an outdoor unit device; wherein,
the outdoor unit device comprises a double-cylinder compressor, an outdoor heat exchanger, a first liquid storage device and a second liquid storage device;
the indoor unit device comprises a first electronic expansion valve, a first indoor heat exchanger, a second electronic expansion valve and a second indoor heat exchanger;
the double-cylinder compressor, the outdoor heat exchanger, the first electronic expansion valve, the first indoor heat exchanger and the first liquid storage device are sequentially connected in series to form a sensible heat treatment system with circulating refrigerant;
the double-cylinder compressor, the outdoor heat exchanger, the second electronic expansion valve, the second indoor heat exchanger and the second liquid storage device are sequentially connected in series to form a latent heat treatment system for circulating and circulating refrigerant;
the indoor unit arrangement further includes a regenerator positioned between the first indoor heat exchanger and the second indoor heat exchanger.
2. The air conditioning system of claim 1, wherein:
the exhaust side of the double-cylinder compressor is provided with a first exhaust branch and a second exhaust branch;
the first exhaust branch belongs to a sensible heat treatment system; the second exhaust branch belongs to a latent heat treatment system;
from the exhaust side of the double-cylinder compressor to the suction side of the double-cylinder compressor, a first exhaust branch, an outdoor heat exchanger, a first electronic expansion valve, a first indoor heat exchanger and a first liquid storage of the sensible heat treatment system are connected in parallel with a second exhaust branch, an outdoor heat exchanger, a second electronic expansion valve, a second indoor heat exchanger and a second liquid storage of the latent heat treatment system.
3. The air conditioning system of claim 2, wherein:
the outdoor unit device also comprises two four-way reversing valves, wherein a first four-way reversing valve is arranged on the first exhaust branch, and a second four-way reversing valve is arranged on the second exhaust branch;
when the air conditioning system is in a refrigerating working state, the first four-way reversing valve communicates the first exhaust branch with the outdoor heat exchanger and communicates the first indoor heat exchanger with the first liquid reservoir; the second four-way reversing valve communicates the second discharge branch with the outdoor heat exchanger and communicates the second indoor heat exchanger with the second accumulator;
when the air conditioning system is in a heating working state, the first four-way reversing valve is communicated with the first exhaust branch and the first indoor heat exchanger, and is communicated with the outdoor heat exchanger and the first liquid storage device; the second four-way reversing valve is communicated with the second exhaust branch and the second indoor heat exchanger and is communicated with the outdoor heat exchanger and the second liquid storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946285.2A CN106885303A (en) | 2015-12-16 | 2015-12-16 | Sensible heat latent heat separates the air-conditioning system of control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946285.2A CN106885303A (en) | 2015-12-16 | 2015-12-16 | Sensible heat latent heat separates the air-conditioning system of control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106885303A true CN106885303A (en) | 2017-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510946285.2A Pending CN106885303A (en) | 2015-12-16 | 2015-12-16 | Sensible heat latent heat separates the air-conditioning system of control |
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| Country | Link |
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| CN (1) | CN106885303A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397183A (en) * | 2020-04-03 | 2020-07-10 | 珠海格力电器股份有限公司 | Air conditioning unit with additional heat exchanger |
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| CN102927715A (en) * | 2012-10-31 | 2013-02-13 | 青岛海信日立空调系统有限公司 | Multiple-on-line heat pump air-conditioning system and method for controlling multiple-on-line heat pump air-conditioning system |
| CN103062851A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Air conditioning system and dehumidification method thereof |
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| CN203837095U (en) * | 2014-02-21 | 2014-09-17 | 大金工业株式会社 | Indoor unit of air conditioner |
| WO2015075760A1 (en) * | 2013-11-20 | 2015-05-28 | 三菱電機株式会社 | Air conditioner |
| JP2015114039A (en) * | 2013-12-11 | 2015-06-22 | 大阪瓦斯株式会社 | Air conditioning system |
| CN105115181A (en) * | 2015-07-21 | 2015-12-02 | 上海日立电器有限公司 | Air conditioning system |
-
2015
- 2015-12-16 CN CN201510946285.2A patent/CN106885303A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005036989A (en) * | 2003-07-15 | 2005-02-10 | Mitsubishi Electric Corp | Air conditioning system |
| CN103292431A (en) * | 2008-01-28 | 2013-09-11 | 株式会社东芝 | Air-conditioning control system |
| CN102927715A (en) * | 2012-10-31 | 2013-02-13 | 青岛海信日立空调系统有限公司 | Multiple-on-line heat pump air-conditioning system and method for controlling multiple-on-line heat pump air-conditioning system |
| CN103062851A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信日立空调系统有限公司 | Air conditioning system and dehumidification method thereof |
| WO2015075760A1 (en) * | 2013-11-20 | 2015-05-28 | 三菱電機株式会社 | Air conditioner |
| JP2015114039A (en) * | 2013-12-11 | 2015-06-22 | 大阪瓦斯株式会社 | Air conditioning system |
| CN203837095U (en) * | 2014-02-21 | 2014-09-17 | 大金工业株式会社 | Indoor unit of air conditioner |
| CN105115181A (en) * | 2015-07-21 | 2015-12-02 | 上海日立电器有限公司 | Air conditioning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111397183A (en) * | 2020-04-03 | 2020-07-10 | 珠海格力电器股份有限公司 | Air conditioning unit with additional heat exchanger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |
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| RJ01 | Rejection of invention patent application after publication |