CN105823142B - A kind of outer machine unit and pressure detection method of air conditioning multi-couple machine - Google Patents
A kind of outer machine unit and pressure detection method of air conditioning multi-couple machine Download PDFInfo
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- CN105823142B CN105823142B CN201610281823.5A CN201610281823A CN105823142B CN 105823142 B CN105823142 B CN 105823142B CN 201610281823 A CN201610281823 A CN 201610281823A CN 105823142 B CN105823142 B CN 105823142B
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- Prior art keywords
- compressor
- machine
- way valve
- pressure
- outer machine
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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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
- F25B41/40—Fluid line arrangements
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/05—Cost reduction
Abstract
The invention discloses a kind of outer machine units of air conditioning multi-couple machine, it includes outdoor unit, and each outdoor unit has respectively contained: compressor；Outer machine heat exchanger；Electric expansion valve；Freeze check valve, and the both ends for the check valve that freezes are connected to the both ends of electric expansion valve respectively；Four-way valve；The other end of the outer machine heat exchanger is connected to through electric expansion valve with the other end of indoor unit；It is characterized by: the connecting line between the output end and four-way valve of the compressor in any one outdoor unit is equipped with high-pressure inductor, connecting line between the input terminal and four-way valve of compressor is equipped with low pressure inductor, and the connecting line of the four-way valve of remaining outdoor unit and outer machine heat exchanger is equipped with second pressure sensor.The present invention provides a kind of outer machine unit of air conditioning multi-couple machine, and the quantity of pressure sensor is reduced, thus save the cost.
Description
Technical field
The present invention relates to the technical field of air-conditioning, the specifically a kind of outer machine unit of air conditioning multi-couple machine and pressure detecting side
Method.
Background technique
Air conditioning multi-couple machine is also known as multi-connected air conditioning system (abbreviation VRV), due to its outstanding part throttle characteristics and significantly
Be widely used the occasions such as office, workshop using energy-saving effect.
For multi-connected machine, in order to be accurately controlled indoor temperature to meet the comfort of user experience, need
The control of high pressure and low pressure is carried out to air-conditioning system, that is to say, that carry out low voltage control in refrigeration, when heating carries out high pressure
Control, the outer machine of each of existing multi-connected machine respectively come with a high-pressure pressure sensor and a low-pressure sensor,
High-pressure pressure sensor is set on the output pipe between the output end of compressor and four-way valve, for detecting under heating mode
High-voltage value, low-pressure sensor is set on the return line between four-way valve and the input terminal of compressor, for detecting
Low voltage value under refrigeration mode.But due to the outer machine unit of multi-connected machine be by multiple outer mechanisms at, and entire multi-connected machine
System only needs to read the detected value of the high-pressure pressure sensor of an outer machine in a heating mode, therefore its besides machine
The idle waste of high-pressure pressure sensor, similarly, the low pressure for only needing to read an outer machine in the case where carrying out refrigeration mode passes
The detected value of sensor, the besides idle waste of the low-pressure sensor of machine.
So the quantity (being defined as y) of pressure sensor is the 2 of outer machine number (being defined as n) for multi-connected machine
Times, i.e. y=2n (n >=2, n ∈ Z), and in actual application, the pressure sensor y=n+1 (n >=2, n ∈ Z) effectively used.
By taking the multi-connected machine of 4 outer machines as an example, the pressure sensor of design is 2*4=8, wherein four high-pressure pressure sensors, four
A low-pressure sensor, and it is practical in use, 5 sensors are used only, 3 additional pressure sensors are idle unrestrained
Take.
Although more several pressure sensors of installation are either lived concerning smaller for cost on single multi-connected machine
Residence, office building, constant temperature workshop, market and research institutions, be unable to do without the use of air-conditioning system, therefore how to solve
Partial pressure sensor idle the problem of wasting in multi-connected machine, actually responds national energy conservation and emission reduction, reduces the important wait solve of cost
Certainly the technical issues of.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of outer machine unit of air conditioning multi-couple machine, pressure sensor
Quantity reduce, thus save the cost.
The technical solution used in the present invention is: providing a kind of outer machine unit of air conditioning multi-couple machine, it includes at least two
The outdoor unit being connected to after parallel connection with indoor unit, each outdoor unit have respectively contained: a compressor；One outer machine heat exchanger；One electronics
Expansion valve；One refrigeration check valve, the both ends for the check valve that freezes are connected to the both ends of electric expansion valve respectively, for only for indoor unit
Refrigerant when in refrigeration mode passes through；One four-way valve, for being connected to the output of compressor when machine is in refrigeration mode indoors
One end of one end and indoor unit of end and outer machine heat exchanger and the input terminal of compressor, when machine is in heating mode indoors
Switch to one end of the output end and indoor unit for being connected to compressor, and outer machine heat exchanger one end and compressor input
End；The other end of the outer machine heat exchanger is connected to through electric expansion valve with the other end of indoor unit；In any one outdoor unit
Connecting line between the output end and four-way valve of compressor is equipped with high-pressure inductor, the input terminal and four-way of compressor
Connecting line between valve is equipped with low pressure inductor, the connecting line of the four-way valve of remaining outdoor unit and outer machine heat exchanger
It is equipped with second pressure sensor.
Oil eliminator is equipped between the compressor and four-way valve, the input port of oil eliminator and the output end of compressor connect
Logical, the gas outlet of oil eliminator is connected to four-way valve, and the oil outlet of oil eliminator is connected to the input terminal of compressor.
Gas-liquid separator is equipped between the compressor and four-way valve, the input port of gas-liquid separator is connected with four-way valve
Logical, the delivery outlet of gas-liquid separator is connected to the input port of compressor.
After using the above structure, a kind of outer machine unit of air conditioning multi-couple machine of the invention has following compared with prior art
Advantage: greatly reducing the quantity of pressure inductor, to save the cost of air conditioning multi-couple machine.
The technical problems to be solved by the present invention are: a kind of pressure detection method of air conditioning multi-couple machine is provided, in not shadow
The quantity of pressure inductor is reduced on the basis of the pressure detecting of sound high pressure and low pressure.
The technical solution used in the present invention is: providing a kind of pressure of outer machine unit based on the air conditioning multi-couple machine
Detection method, it include: 1), read high-pressure inductor, low pressure inductor and second pressure sensor detected value；
2) using the detected value of low pressure inductor as the low voltage value of system when machine is in refrigeration mode indoors, by high-pressure sense
Answer high-voltage value of the detected value on device and each second pressure sensor as corresponding outdoor unit；Machine is in heating indoors
Using the detected value of high-pressure inductor as the high-voltage value of system when mode, low pressure inductor and each second pressure are passed
Low voltage value of the detected value as corresponding outdoor unit on sensor.
After using the above structure, a kind of pressure detection method of air conditioning multi-couple machine of the invention has compared with prior art
Following advantages: the quantity of pressure sensor can be greatly reduced in the case where system detection is worth constant.
Detailed description of the invention
Fig. 1 is a kind of distribution schematic diagram of the outer machine unit of air conditioning multi-couple machine of the invention.
Fig. 2 is the partial enlargement diagram in region " A " in Fig. 1.
Fig. 3 is the partial enlargement diagram in region " B " in Fig. 1.
Wherein, 1, indoor unit, 2, compressor, 3, outer machine heat exchanger, 4, electric expansion valve, 5, refrigeration check valve, 6, four-way
Valve, 7, high-pressure inductor, 8, low pressure inductor, 9, second pressure sensor, 10, oil eliminator, 11, gas-liquid separation
Device, 12, liquid pipe shut-off valve, 13, tracheae shut-off valve, 14, blower.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
The present invention provides a kind of outer machine unit of air conditioning multi-couple machine, it after at least two parallel connections with indoor unit 1 including being connected to
Outdoor unit, each outdoor unit respectively contained: a compressor 2；One outer machine heat exchanger 3；One electric expansion valve 4；One refrigeration is single
It is connected to respectively with the both ends of electric expansion valve 4 to the both ends of valve 5, the check valve 5 that freezes, for being only in refrigeration mould for indoor unit 1
Refrigerant when formula passes through；One four-way valve 6, for being connected to the output end and outer machine of compressor 2 when machine 1 is in refrigeration mode indoors
The input terminal of one end of heat exchanger 3 and one end of indoor unit 1 and compressor 2 switches when machine 1 is in heating mode indoors
At one end of output end and indoor unit 1 for being connected to compressor 2, and outer machine heat exchanger 3 one end and compressor 2 input
End；The other end of the outer machine heat exchanger 3 is connected to through electric expansion valve 4 with the other end of indoor unit 1；In any one outdoor unit
Compressor 2 output end and four-way valve 6 between connecting line be equipped with high-pressure inductor 7, the input terminal of compressor 2
Connecting line between four-way valve 6 is equipped with low pressure inductor 8, the four-way valve 6 and outer machine heat exchanger 3 of remaining outdoor unit
Connecting line be equipped with second pressure sensor 9.
Oil eliminator 10, input port and the compressor 2 of oil eliminator 10 are equipped between the compressor 2 and four-way valve 6
Output end connection, the gas outlet of oil eliminator 10 are connected to four-way valve 6, the input of the oil outlet and compressor 2 of oil eliminator 10
End connection.
Gas-liquid separator 11, the input port of gas-liquid separator 11 and four-way valve are equipped between the compressor 2 and four-way valve 6
6 are connected, and the delivery outlet of gas-liquid separator 11 is connected to the input port of compressor 2.
Connecting line between the electric expansion valve 4 and indoor unit 1 is equipped with liquid pipe shut-off valve 12, four-way valve and interior
The connecting line of machine is equipped with tracheae shut-off valve 13, and the liquid pipe shut-off valve 12 and tracheae shut-off valve 13 are for indoor unit 1
Open-close on-off when being dispensed with outdoor unit.
Certainly above-mentioned outer machine heat exchanger needs to add blower 14 for improving heat transfer effect in carrying out heat transfer process.
Above-mentioned four-way valve 6 includes first interface, second interface, third interface and the 4th interface, in the four-way valve 6
Third interface and second when the 4th orifice or first interface and third orifice when first interface is connected to second interface
Interface and the 4th interface.The first interface of four-way valve 6 is connected to the delivery outlet of compressor, and second interface and outer machine exchange heat
Device 3 is connected to away from one end of electric expansion valve 4, and third interface is connected to the other end of the separate electric expansion valve 4 of indoor unit 1,
4th interface is connected to the input terminal of compressor 2.
So refrigerant sequentially passes through oil liquid since the input terminal of compressor 2 when under machine 1 is in refrigeration mode indoors
Separator 10, the first interface of four-way valve 6, the second interface of four-way valve 6, outer machine heat exchanger 3, refrigeration check valve 5 (wherein lack portion
Lease making crosses electric expansion valve 4), indoor unit 1, the third interface of four-way valve 6, four-way valve 6 the 4th interface, gas-liquid separator 11,
And finally it is back to compressor 2.
Similarly, when machine 1 is under heating mode indoors, refrigerant sequentially passes through oil liquid since the input terminal of compressor 2
Separator 10, the first interface of four-way valve 6, the third interface of four-way valve 6, indoor unit 1, electric expansion valve 4, outer machine heat exchanger 3,
The 4th interface, the oil-liquid separator 10 of the second interface of four-way valve, four-way valve, and finally it is back to compressor 2.
Above-mentioned refrigeration check valve 5 is in parallel with electric expansion valve 4, i.e., as shown, refrigerant indoors machine 1 be in refrigeration mould
Pass through electric expansion valve 4 and refrigeration check valve 5 when under formula from left to right, most refrigerant flows into interior through refrigeration check valve 5
In machine 1, the refrigerant of fraction enters the room machine 1 through electric expansion valve 4, conversely, refrigerant is when machine 1 is under heating mode indoors
It turns left from the right side by electric expansion valve 4, without circulating out of refrigeration check valve 5.
A kind of pressure detection method of the outer machine unit based on air conditioning multi-couple machine described in claim 1, it includes:
1) detected value of high-pressure inductor 7, low pressure inductor 8 and second pressure sensor 9, is read；
2) using the detected value of low pressure inductor 8 as the low voltage value of system when, machine 1 is in refrigeration mode indoors,
Using the detected value on high-pressure inductor 7 and each second pressure sensor 9 as the high-voltage value of corresponding outdoor unit；?
Using the detected value of high-pressure inductor 7 as the high-voltage value of system when indoor unit 1 is in heating mode, low pressure is incuded
Low voltage value of the detected value as corresponding outdoor unit on device 8 and each second pressure sensor 9.
Necessarily contain controller in certain indoor unit 1, controller is by reading high-pressure inductor 7, low pressure sense
The detection signal fed back on device 8 and second pressure sensor 9 is answered to carry out the opening and closing of control compressor 2, blower and solenoid valve.
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above embodiments, specific structure is allowed to vary, all institutes in the protection scope of demand for independence of the present invention
The various change of work is within the scope of the invention.
Claims (4)
1. a kind of outer machine unit of air conditioning multi-couple machine, it includes the outdoor unit being connected to after at least two parallel connections with indoor unit (1), respectively
Outdoor unit has respectively contained:
One compressor (2)；
One outer machine heat exchanger (3)；
One electric expansion valve (4)；
One refrigeration check valve (5), the both ends of refrigeration check valve (5) are connected to the both ends of electric expansion valve (4) respectively, for only supplying
Refrigerant when indoor unit (1) is in refrigeration mode passes through；
One four-way valve (6), for being connected to output end and the heat exchange of outer machine of compressor (2) when machine (1) is in refrigeration mode indoors
The input terminal of one end of device (3) and one end of indoor unit (1) and compressor (2), when machine (1) is in heating mode indoors
Switch to one end of the output end and indoor unit (1) for being connected to compressor (2), and one end and the pressure of outer machine heat exchanger (3)
The input terminal of contracting machine (2)；
The other end of the outer machine heat exchanger (3) is connected to through electric expansion valve (4) with the other end of indoor unit (1)；
It is characterized by:
Connecting line between the output end and four-way valve (6) of compressor (2) in any one outdoor unit is equipped with high pressure pressure
Power inductor (7), the connecting line between the input terminal and four-way valve (6) of compressor (2) are equipped with low pressure inductor
(8), the connecting line of the four-way valve (6) of remaining outdoor unit and outer machine heat exchanger (3) is equipped with second pressure sensor (9)；
Gas-liquid separator (11) are equipped between the compressor (2) and four-way valve (6).
2. a kind of outer machine unit of air conditioning multi-couple machine according to claim 1, it is characterised in that: the compressor (2) and
Oil eliminator (10) are equipped between four-way valve (6), the input port of oil eliminator (10) is connected to the output end of compressor (2), oil
The gas outlet of separator (10) is connected to four-way valve (6), and the oil outlet of oil eliminator (10) and the input terminal of compressor (2) connect
It is logical.
3. a kind of outer machine unit of air conditioning multi-couple machine according to claim 1, it is characterised in that: the compressor (2) and
Gas-liquid separator (11) are equipped between four-way valve (6), the input port of gas-liquid separator (11) is connected with four-way valve (6), gas-liquid
The delivery outlet of separator (11) is connected to the input port of compressor (2).
4. a kind of pressure detection method of the outer machine unit based on air conditioning multi-couple machine described in claim 1, it includes:
1) detected value of high-pressure inductor (7), low pressure inductor (8) and second pressure sensor (9), is read；
It 2), will using the detected value of low pressure inductor (8) as the low voltage value of system when machine (1) is in refrigeration mode indoors
High-voltage value of the detected value as corresponding outdoor unit on high-pressure inductor (7) and each second pressure sensor (9)；
It, will be low using the detected value of high-pressure inductor (7) as the high-voltage value of system when machine (1) is in heating mode indoors
Low voltage value of the detected value as corresponding outdoor unit on pressure pressure inductor (8) and each second pressure sensor (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281823.5A CN105823142B (en) | 2016-04-29 | 2016-04-29 | A kind of outer machine unit and pressure detection method of air conditioning multi-couple machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610281823.5A CN105823142B (en) | 2016-04-29 | 2016-04-29 | A kind of outer machine unit and pressure detection method of air conditioning multi-couple machine |
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| Publication Number | Publication Date |
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| CN105823142A CN105823142A (en) | 2016-08-03 |
| CN105823142B true CN105823142B (en) | 2019-06-18 |
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| JP6687063B2 (en) | 2018-07-11 | 2020-04-22 | ダイキン工業株式会社 | Ventilation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415914A (en) * | 2001-10-30 | 2003-05-07 | 海尔集团公司 | Multiple air-conditioners with variable energy driven by one set |
| CN101086370A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner and control method thereof |
| CN102997368A (en) * | 2012-12-10 | 2013-03-27 | 宁波奥克斯电气有限公司 | Intelligent defrosting control method for parallel multiple on-line unit with multiple compressors |
| JP2013178058A (en) * | 2012-02-29 | 2013-09-09 | Hitachi Appliances Inc | Air conditioner |
| CN205536245U (en) * | 2016-04-29 | 2016-08-31 | 宁波奥克斯电气股份有限公司 | How inline outer unit of air conditioner |
-
2016
- 2016-04-29 CN CN201610281823.5A patent/CN105823142B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415914A (en) * | 2001-10-30 | 2003-05-07 | 海尔集团公司 | Multiple air-conditioners with variable energy driven by one set |
| CN101086370A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Air conditioner and control method thereof |
| JP2013178058A (en) * | 2012-02-29 | 2013-09-09 | Hitachi Appliances Inc | Air conditioner |
| CN102997368A (en) * | 2012-12-10 | 2013-03-27 | 宁波奥克斯电气有限公司 | Intelligent defrosting control method for parallel multiple on-line unit with multiple compressors |
| CN205536245U (en) * | 2016-04-29 | 2016-08-31 | 宁波奥克斯电气股份有限公司 | How inline outer unit of air conditioner |
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