CN111397183A - Air conditioning unit with additional heat exchanger - Google Patents
Air conditioning unit with additional heat exchanger Download PDFInfo
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- CN111397183A CN111397183A CN202010260201.0A CN202010260201A CN111397183A CN 111397183 A CN111397183 A CN 111397183A CN 202010260201 A CN202010260201 A CN 202010260201A CN 111397183 A CN111397183 A CN 111397183A
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- Prior art keywords
- heat exchanger
- air
- communicated
- indoor
- air conditioning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- 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
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- 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
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioning unit with an additional heat exchanger, which comprises: the refrigerant compression circulating pipeline comprises an outdoor heat exchanger, a first indoor heat exchanger and a first liquid refrigerant pipeline; a first end of the heat exchange loop is communicated with an outlet of the outdoor heat exchanger, a second end of the heat exchange loop is communicated with an air suction port of a compressor in the refrigerant compression circulating pipeline, and an expansion valve is further arranged on the heat exchange loop; and the first liquid refrigerant pipeline is communicated with the first indoor side heat exchanger after passing through the additional heat exchanger. The air conditioning unit enables the liquid refrigerant in the heat exchange loop to evaporate and absorb heat in the additional heat exchanger, further reduces the liquid refrigerant in the first liquid refrigerant pipeline, and realizes low-temperature refrigeration and dehumidification at the same time.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning unit with an additional heat exchanger.
Background
The comfort control of indoor air is more and more paid attention to in domestic air conditioning technology, and the factor that influences the comfort level is mainly humiture and air quality, consequently, more and more fresh air conditioner come into existence at the same time, and fresh air conditioner can make the air quality rise, but nevertheless has brought great degree of difficulty in temperature and humidity control, moreover, adopt fresh air conditioning unit, require higher to ambient temperature during the refrigeration, can't realize low temperature refrigeration and dehumidification, air conditioning unit's use scene has been restricted greatly.
Disclosure of Invention
The invention discloses an air conditioning unit with an additional heat exchanger, which solves the problem that low-temperature refrigeration and dehumidification cannot be realized in the prior art.
The invention discloses an air conditioning unit, comprising: the refrigerant compression circulation pipeline comprises an outdoor heat exchanger, a first indoor heat exchanger and a first liquid refrigerant pipeline, wherein a first end of the first liquid refrigerant pipeline is communicated with an outlet of the outdoor heat exchanger, and a second end of the first liquid refrigerant pipeline is communicated with an inlet of the first indoor heat exchanger; a first end of the heat exchange loop is communicated with an outlet of the outdoor heat exchanger, a second end of the heat exchange loop is communicated with an air suction port of a compressor in the refrigerant compression circulating pipeline, and an expansion valve is further arranged on the heat exchange loop; the first liquid refrigerant pipeline is communicated with the first indoor side heat exchanger after passing through the additional heat exchanger, and the additional heat exchanger is used for cooling the refrigerant in the first liquid refrigerant pipeline.
Further, the additional heat exchanger comprises a plate heat exchanger.
Further, the additional heat exchanger is an evaporator.
Further, an inlet of the outdoor side heat exchanger is communicated with an exhaust port of the compressor, and a second end of the heat exchange loop is communicated with a suction port of the compressor; the compressor, the outdoor heat exchanger and the first indoor heat exchanger are connected to form a first refrigerant compression cycle.
Further, the refrigerant compression circulation line further includes: and the compressor, the outdoor heat exchanger and the second indoor heat exchanger are connected to form a second refrigerant compression cycle.
Further, the compressor is a double-cylinder compressor, the compressor is provided with a first air suction port and a second air suction port, the first air suction port is communicated with the first indoor side heat exchanger, and the second air suction port is communicated with the second indoor side heat exchanger.
Further, the first indoor side heat exchanger is a sensible heat evaporator, the second indoor side heat exchanger is a latent heat evaporator, and the temperature of the second indoor side heat exchanger is lower than that of the first indoor side heat exchanger.
Further, the air conditioning unit still includes indoor set, indoor set includes: the second indoor side heat exchanger is arranged in the dehumidification air channel structure and is used for dehumidifying and cooling fresh air; the air outlet air channel structure, the air outlet air channel with dehumidification air channel structure intercommunication, first indoor side heat exchanger sets up in the air outlet air channel for carry out heat treatment to the new trend after the cooling dehumidification.
Further, the air conditioning unit further includes: the humidity sensor is arranged at the outlet of the dehumidification air channel structure and used for detecting the humidity of the outlet air; and the temperature sensor is arranged at the outlet position of the air outlet duct and used for detecting the temperature of the outlet air.
The air conditioning unit provided by the invention has the advantages that the heat exchange loop, the expansion valve and the additional heat exchanger are additionally arranged, so that liquid refrigerants in the heat exchange loop are evaporated and absorb heat in the additional heat exchanger, and the liquid refrigerants in the first liquid refrigerant pipeline are further reduced, so that the lower refrigerating temperature is achieved.
Drawings
FIG. 1 is a schematic diagram of an air conditioning unit according to an embodiment of the present invention;
legend: 10. an outdoor side heat exchanger; 21. a first indoor-side heat exchanger; 22. a second indoor-side heat exchanger; 30. a first liquid refrigerant pipeline; 40. a heat exchange circuit; 41. an expansion valve; 50. an additional heat exchanger; 60. a compressor.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the details of the description.
As shown in fig. 1, the present invention discloses an air conditioning unit, comprising: the system comprises a refrigerant compression circulation pipeline, a heat exchange loop 40 and an additional heat exchanger 50, wherein the refrigerant compression circulation pipeline comprises an outdoor heat exchanger 10, a first indoor heat exchanger 21 and a first liquid refrigerant pipeline 30, a first end of the first liquid refrigerant pipeline 30 is communicated with an outlet of the outdoor heat exchanger 10, and a second end of the first liquid refrigerant pipeline 30 is communicated with an inlet of the first indoor heat exchanger 21; a first end of the heat exchange loop 40 is communicated with an outlet of the outdoor heat exchanger 10, a second end of the heat exchange loop 40 is communicated with a suction port of a compressor 60 in a refrigerant compression circulating pipeline, and an expansion valve 41 is further arranged on the heat exchange loop 40; the additional heat exchanger 50 is disposed on the heat exchange circuit 40, the additional heat exchanger 50 is located between the second end of the heat exchange circuit 40 and the expansion valve 41, the first liquid refrigerant pipeline 30 is communicated with the first indoor-side heat exchanger 21 after passing through the additional heat exchanger 50, and the additional heat exchanger 50 is used for cooling the refrigerant in the first liquid refrigerant pipeline 30. The air conditioning unit of the invention, through adding the heat exchange loop 40, the expansion valve 41 and the additional heat exchanger 50, make the liquid refrigerant in the heat exchange loop 40 evaporate and absorb heat in the additional heat exchanger 50, further reduce the liquid refrigerant in the first liquid refrigerant pipeline 30, thus achieve the lower refrigerating temperature, this arrangement way can make the refrigerating operation temperature of the unit lower on the one hand, realize low-temperature refrigeration and dehumidification, on the other hand, can also guarantee the refrigerant keeps the pure liquid state before evaporating, reduce the air current noise of the unit in the flow process before evaporating, achieve many purposes.
In the above described embodiment, the additional heat exchanger 50 comprises a plate heat exchanger. The air conditioning unit adopts the plate heat exchanger, so that the refrigerant in the heat exchange loop 40 and the refrigerant in the first liquid refrigerant pipeline 30 can exchange heat, the refrigerant in the first liquid refrigerant pipeline 30 is cooled, the lower refrigerating temperature is achieved, the refrigerating operation environment temperature of the unit can be lower, and the low-temperature refrigeration and dehumidification are realized. Plate heat exchangers generally employ a high efficiency heat exchanger formed by stacking metal sheets having a certain corrugated shape. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is an ideal device for heat exchange of liquid-liquid and liquid-vapor. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Under the condition of the same pressure loss, the heat transfer coefficient of the heat exchanger is 3-5 times higher than that of the tubular heat exchanger, the occupied area of the heat exchanger is one third of that of the tubular heat exchanger, and the heat recovery rate can reach more than 90 percent.
In the above embodiment, the additional heat exchanger 50 is an evaporator. The air conditioning unit adopts the evaporator, so that the refrigerant in the heat exchange loop 40 can be evaporated into a gas state from a liquid state, the heat of the refrigerant in the first liquid refrigerant pipeline 30 is absorbed in the evaporation process, the refrigerant in the first liquid refrigerant pipeline 30 is cooled, the lower refrigeration temperature is achieved, the refrigeration running environment temperature of the unit can be lower, the low-temperature refrigeration and dehumidification are realized, the refrigerant is ensured to be kept in a pure liquid state before evaporation, the air flow noise of the unit in the flowing process before evaporation is reduced, and the liquid flow noise of the unit in the running process is improved.
In the above embodiment, the inlet of the outdoor side heat exchanger 10 communicates with the discharge port of the compressor 60, and the second end of the heat exchange circuit 40 communicates with the suction port of the compressor 60; the compressor 60, the outdoor heat exchanger 10, and the first indoor heat exchanger 21 are connected to form a first refrigerant compression cycle. The refrigerant compression circulation pipeline further comprises: the second indoor heat exchanger 22, the compressor 60, the outdoor heat exchanger 10, and the second indoor heat exchanger 22 are connected to form a second refrigerant compression cycle. The compressor 60 is a double-cylinder compressor, the compressor 60 has a first suction port and a second suction port, the first suction port is communicated with the first indoor side heat exchanger 21, and the second suction port is communicated with the second indoor side heat exchanger 22. The air conditioning unit provided by the invention can realize double-refrigerant compression circulation at the same time by adopting the double-cylinder compressor, so that the refrigeration efficiency is improved.
In the above embodiment, the first indoor heat exchanger 21 is a sensible heat evaporator, the second indoor heat exchanger 22 is a latent heat evaporator, and the temperature of the second indoor heat exchanger 22 is lower than the temperature of the first indoor heat exchanger 21. Air conditioning unit still includes indoor set, and indoor set includes: the second indoor heat exchanger 22 is arranged in the dehumidification air channel structure and is used for dehumidifying and cooling fresh air; air-out wind channel and dehumidification wind channel structure intercommunication, first indoor side heat exchanger 21 sets up in the air-out wind channel for carry out heat treatment to the new trend after the cooling dehumidification. The air conditioning unit adopts the sensible heat evaporator and the latent heat evaporator, air is pretreated through the low evaporation temperature of the latent heat evaporator, the air is dehumidified and cooled, then the air flows through the high evaporation temperature of sensible heat to carry out reheating treatment on the air, cold air is prevented from directly blowing to a human body, and true dehumidification and no cooling are realized.
The air conditioning unit still includes: the humidity sensor is arranged at the outlet of the dehumidification air channel structure and used for detecting the humidity of the outlet air; the temperature sensor is arranged at the outlet position of the air outlet duct and used for detecting the temperature of the outlet air. The air conditioning unit disclosed by the invention adopts the temperature sensor and the humidity sensor which are arranged on the indoor unit, and is matched with the fan system to realize independent control on the dry bulb temperature and the relative humidity. A humidity sensor is required to be arranged at the outlet of the latent heat evaporator, and a temperature sensor is required to be arranged at the outlet of the sensible heat evaporator so as to ensure accurate temperature control! The temperature setting is set according to the sensible temperature. And (4) making the environmental temperature and the relative humidity into a body temperature sensing meter. After a user sets the temperature, a body temperature sensing meter is inquired, temperature and humidity parameters of corresponding air are found, firstly, the latent heat evaporator is used for controlling the humidity, then, the sensible heat evaporator is used for controlling the temperature, and the set temperature is finally reached through continuous feedback adjustment. In order to improve unit experience, improve the noise problem in the operation process and improve the refrigeration effect of unit.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (9)
1. An air conditioning assembly, comprising:
the refrigerant compression circulation pipeline comprises an outdoor heat exchanger (10), a first indoor heat exchanger (21) and a first liquid refrigerant pipeline (30), wherein a first end of the first liquid refrigerant pipeline (30) is communicated with an outlet of the outdoor heat exchanger (10), and a second end of the first liquid refrigerant pipeline (30) is communicated with an inlet of the first indoor heat exchanger (21);
a heat exchange loop (40), wherein a first end of the heat exchange loop (40) is communicated with an outlet of the outdoor heat exchanger (10), a second end of the heat exchange loop (40) is communicated with a suction port of a compressor (60) in the refrigerant compression circulation pipeline, and an expansion valve (41) is further arranged on the heat exchange loop (40);
the heat exchanger comprises an additional heat exchanger (50), the additional heat exchanger (50) is arranged on the heat exchange loop (40), the additional heat exchanger (50) is located between the second end of the heat exchange loop (40) and the expansion valve (41), the first liquid refrigerant pipeline (30) is communicated with the first indoor side heat exchanger (21) after passing through the additional heat exchanger (50), and the additional heat exchanger (50) is used for cooling the refrigerant in the first liquid refrigerant pipeline (30).
2. Air conditioning assembly according to claim 1,
the additional heat exchanger (50) comprises a plate heat exchanger.
3. Air conditioning assembly according to claim 1,
the additional heat exchanger (50) is an evaporator.
4. Air conditioning assembly according to claim 1,
the inlet of the outdoor side heat exchanger (10) is communicated with the exhaust port of the compressor (60), and the second end of the heat exchange loop (40) is communicated with the suction port of the compressor (60);
the compressor (60), the outdoor side heat exchanger (10) and the first indoor side heat exchanger (21) are connected to form a first refrigerant compression cycle.
5. The air conditioning unit as set forth in claim 4, wherein the refrigerant compression cycle line further includes:
and the compressor (60), the outdoor heat exchanger (10) and the second indoor heat exchanger (22) are connected to form a second refrigerant compression cycle.
6. Air conditioning assembly according to claim 5,
the compressor (60) is a double-cylinder compressor, the compressor (60) is provided with a first air suction port and a second air suction port, the first air suction port is communicated with the first indoor side heat exchanger (21), and the second air suction port is communicated with the second indoor side heat exchanger (22).
7. Air conditioning assembly according to claim 5,
the first indoor side heat exchanger (21) is a sensible heat evaporator, the second indoor side heat exchanger (22) is a latent heat evaporator, and the temperature of the second indoor side heat exchanger (22) is lower than that of the first indoor side heat exchanger (21).
8. The air conditioning assembly according to claim 7, further comprising an indoor unit, the indoor unit comprising:
the second indoor side heat exchanger (22) is arranged in the dehumidification air channel structure and is used for dehumidifying and cooling fresh air;
the air outlet duct structure is communicated with the dehumidification duct structure, and the first indoor heat exchanger (21) is arranged in the air outlet duct and used for carrying out heat treatment on the cooled and dehumidified fresh air.
9. The air conditioning assembly as set forth in claim 8, further comprising:
the humidity sensor is arranged at the outlet of the dehumidification air channel structure and used for detecting the humidity of the outlet air;
and the temperature sensor is arranged at the outlet position of the air outlet duct and used for detecting the temperature of the outlet air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260201.0A CN111397183A (en) | 2020-04-03 | 2020-04-03 | Air conditioning unit with additional heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010260201.0A CN111397183A (en) | 2020-04-03 | 2020-04-03 | Air conditioning unit with additional heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111397183A true CN111397183A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010260201.0A Pending CN111397183A (en) | 2020-04-03 | 2020-04-03 | Air conditioning unit with additional heat exchanger |
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| Country | Link |
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| CN (1) | CN111397183A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003139436A (en) * | 2001-10-31 | 2003-05-14 | Mitsubishi Electric Corp | Air conditioner |
| CN201344676Y (en) * | 2009-02-12 | 2009-11-11 | 珠海格力电器股份有限公司 | Heat pump air conditioner with by-pass super-cooling |
| CN105485767A (en) * | 2015-12-22 | 2016-04-13 | 珠海格力电器股份有限公司 | Multi-split air-conditioning system and control method |
| CN106885303A (en) * | 2015-12-16 | 2017-06-23 | 上海日立电器有限公司 | Sensible heat latent heat separates the air-conditioning system of control |
| CN209279429U (en) * | 2018-11-28 | 2019-08-20 | 上海朗绿建筑科技股份有限公司 | Double evaporators fresh air dehumidification unit |
-
2020
- 2020-04-03 CN CN202010260201.0A patent/CN111397183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003139436A (en) * | 2001-10-31 | 2003-05-14 | Mitsubishi Electric Corp | Air conditioner |
| CN201344676Y (en) * | 2009-02-12 | 2009-11-11 | 珠海格力电器股份有限公司 | Heat pump air conditioner with by-pass super-cooling |
| CN106885303A (en) * | 2015-12-16 | 2017-06-23 | 上海日立电器有限公司 | Sensible heat latent heat separates the air-conditioning system of control |
| CN105485767A (en) * | 2015-12-22 | 2016-04-13 | 珠海格力电器股份有限公司 | Multi-split air-conditioning system and control method |
| CN209279429U (en) * | 2018-11-28 | 2019-08-20 | 上海朗绿建筑科技股份有限公司 | Double evaporators fresh air dehumidification unit |
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Application publication date: 20200710 |