CN108006865A - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
- Publication number
- CN108006865A CN108006865A CN201711229124.7A CN201711229124A CN108006865A CN 108006865 A CN108006865 A CN 108006865A CN 201711229124 A CN201711229124 A CN 201711229124A CN 108006865 A CN108006865 A CN 108006865A
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- Prior art keywords
- water
- subcooler
- temperature
- conditioning system
- air
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning system, including compressor, four-way valve, condenser, expansion valve and indoor unit, further include the water tank of water pump, subcooler and the low temperature cold condensate for collecting the indoor unit discharge, the water pump connects the subcooler and the water tank respectively simultaneously can be delivered to the subcooler by the low temperature cold condensate in the water tank, the subcooler is arranged between the compressor outlet and the four-way valve, and the high temperature refrigerant exported by compressor described in cryogenic condensation water cooling.Air-conditioning system realizes the recycling of condensed water cold by subcooler, reduces the cold that air-conditioning system is taken away by condensed water.Simultaneously because reducing condensation temperature and pressure, the wasted work of system also can correspondingly be reduced, the energy consumption of air-conditioning system is further reduced.According to supercooling effect control condensate flow, to greatest extent using condensed water, avoid utilization of condensed water insufficient.The invention also discloses a kind of control method of above-mentioned air-conditioning system.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to a kind of air-conditioning system.A kind of moreover, it relates to above-mentioned sky
The control method of adjusting system.
Background technology
For air-conditioning system in process of refrigerastion, its indoor unit can produce the relatively low condensed water of big amount temperature, and existing indoor unit is cold
Condensate treating method, which is substantially, directly drains, and causes substantial amounts of cold in condensed water reasonably to utilize.It is usually indoor
As low as less than 15 DEG C of the condensate temperature that machine produces, and as indoor unit operating condensed water is continuously to produce,
And air-conditioning system is then up to more than 75 DEG C in the coolant media that process of refrigerastion needs to cool down.The condensed water of low temperature is not by reasonable
Cold recovery directly drain and can waste hard-won refrigerating capacity, cause the waste of the energy.
Therefore, how to provide a kind of to be rationally this area skill to avoid the air-conditioning system of energy waste using condensed water
The current technical issues that need to address of art personnel
The content of the invention
, can be rationally using condensed water to avoid energy waste the object of the present invention is to provide a kind of air-conditioning system.This hair
Bright another object is to provide a kind of control method of above-mentioned air-conditioning system, can be rationally using condensed water to avoid energy wave
Take.
In order to solve the above technical problems, the present invention provides a kind of air-conditioning system, including it is compressor, four-way valve, condenser, swollen
Swollen valve and indoor unit, further include the water tank of water pump, subcooler and the low temperature cold condensate for collecting the indoor unit discharge, described
Water pump connects the subcooler and the water tank respectively simultaneously can be delivered to the supercooling by the low temperature cold condensate in the water tank
Device, the subcooler are arranged between the compressor outlet and the four-way valve, and pass through pressure described in cryogenic condensation water cooling
The high temperature refrigerant of contracting machine output.
Preferably, the subcooler is specially casing subcooler, and the refrigerant interface of described sleeve pipe subcooler is respectively communicated with institute
Compressor and the four-way valve are stated, the water inlet of described sleeve pipe subcooler connects the water pump, the water outlet of described sleeve pipe subcooler
Mouth connection is extraneous.
Preferably, it is provided with insulating layer outside the water tank.
Preferably, the water tank and described sleeve pipe subcooler side surface upper part are both provided with gap.
Preferably, including multiple indoor units, described in the discharge outlet of multiple indoor units is connected by drainpipe
Water tank.
Preferably, the subcooler water outlet is provided with leaving water temperature sensors, the subcooler and the four-way valve
Between be provided with refrigerant temperature sensor, further include and communicate to connect the leaving water temperature sensors and the refrigerant temperature sensor
Controller, the controller can be according to the testing result control of the leaving water temperature sensors and the refrigerant temperature sensor
Make the work of the water pump.
Preferably, the water pump is specially variable frequency pump.
Preferably, the water level sensor for communicating to connect the controller is provided with the water tank.
The present invention provides a kind of control method of air-conditioning system, including step：
Judge whether the air-conditioning system is in refrigeration mode；
If it is, obtaining the water level information in water tank, and judge whether water level is higher than preset height；
If it is, control water pump is started with initial operating frequency；
After preset time, the refrigerant at the leaving water temperature and subcooler refrigerant exit of subcooler water outlet is obtained
Temperature, and contrast the leaving water temperature and the refrigerant temperature；
If institute's leaving water temperature is more than the difference of the refrigerant temperature and preset temperature, the default work of water pump increase is controlled
Working frequency；
If the leaving water temperature is less than the difference of the refrigerant temperature and twice of preset temperature, the water pump is controlled
Reduce the default working frequency；
If the leaving water temperature is less than or equal to the difference of the refrigerant temperature and the preset temperature, and it is described go out water temperature
Degree then controls the water pump to keep work at present frequency more than or equal to the difference of the refrigerant temperature and twice of preset temperature
Rate.
Preferably, the initial operating frequency is specially 20Hz, and the preset time is specially 1min, the preset temperature
For 5 DEG C, the default working frequency is specially 1Hz.
The present invention provides a kind of air-conditioning system, including compressor, four-way valve, condenser, expansion valve and indoor unit, further includes
The water tank of water pump, subcooler and the low temperature cold condensate for collecting indoor unit discharge, water pump connect subcooler and water tank simultaneously respectively
Low temperature cold condensate in water tank can be delivered to subcooler, subcooler is arranged between compressor outlet and four-way valve, and is led to
Cross the high temperature refrigerant of low temperature condensed water cooling compressor output.
The condensed water of indoor unit discharge is collected, and subcooler is delivered to by water pump, the high temperature of cooling compressor discharge is cold
Matchmaker.Refrigerant by cryogenic condensation water cooling can not only increase refrigerating capacity, can also lower the power consumption of refrigeration, reach cold and return
Receive and reduce the purpose of air-conditioning system power consumption.Indoor unit evaporated condensation water produces in heating operations, will not cause the loss of heat,
It can switch off the pump during heating, therefore can solve the problems, such as that condensed water cold recovery will not have any adverse effect to heating again.
Air-conditioning system realizes the recycling of condensed water cold by subcooler, reduces air-conditioning system and is taken away by condensed water
Cold.Simultaneously because reducing condensation temperature and pressure, the wasted work of system also can correspondingly be reduced, air-conditioning system is further reduced
The energy consumption of system.According to supercooling effect control condensate flow, to greatest extent using condensed water, utilization of condensed water is avoided not
Foot.
The present invention also provides a kind of control method of above-mentioned air-conditioning system, since above-mentioned air-conditioning system is with above-mentioned technology effect
Fruit, above-mentioned control method should also have same technique effect, no longer be discussed in detail herein.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of embodiment of air-conditioning system provided by the present invention；
Fig. 2 is a kind of FB(flow block) of embodiment of air conditioner system control method provided by the present invention.
Embodiment
The core of the present invention is to provide a kind of air-conditioning system, can be rationally using condensed water to avoid energy waste.This hair
Bright another core is to provide a kind of control method of above-mentioned air-conditioning system, can be rationally using condensed water to avoid energy wave
Take.
In order to make those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Please refer to Fig.1 and Fig. 2, Fig. 1 be air-conditioning system provided by the present invention a kind of embodiment structural representation
Figure；Fig. 2 is a kind of FB(flow block) of embodiment of air conditioner system control method provided by the present invention.
The air-conditioning system that the specific embodiment of the invention provides, including compressor 1, four-way valve 5, condenser 6, expansion valve 7
With indoor unit 8, the inlet and outlet of compressor 1 connects two interfaces of four-way valve 5, the another two interface point of four-way valve 5 respectively
Not Lian Jie condenser 6 and indoor unit 8, condenser 6 and indoor unit 8 are connected by expansion valve 7, to realize the various work(of air-conditioning system
Energy.The water tank 11 of water pump 12, subcooler and the low temperature cold condensate for collecting the discharge of indoor unit 8 is further included, water pump 12 connects respectively
Take over cooler and water tank 11 and the low temperature cold condensate in water tank 11 can be delivered to subcooler, subcooler is arranged at compressor 1
Between outlet and four-way valve 5, and the high temperature refrigerant exported by cryogenic condensation water cooling compressor 1.
Specifically, subcooler can be casing subcooler 3, and the refrigerant interface of casing subcooler 3 is respectively communicated with 1 He of compressor
Four-way valve 5, the water inlet connection water pump 12 of casing subcooler 3, the water outlet connection of casing subcooler 3 is extraneous, can also use it
The subcooler of his structure, within protection scope of the present invention.
The condensed water of indoor unit 8 enters water tank 11 after collection, and is delivered to water pump 12 in casing subcooler 3, pressure
The high temperature refrigerant of 1 outlet drain of contracting machine exchanges heat in casing subcooler 3 with the low temperature cold condensate from indoor unit 8, in refrigerant
A part of heat is taken away by the condensed water of low temperature and realizes first time cooling down, is emitted into afterwards by four-way valve 5 in condenser 6
Further cooling, refrigerant after cooling machine 8 sent to the room after the throttling cooling of expansion valve 7 realize refrigeration, and refrigerant is weighed afterwards
New draw back completes complete kind of refrigeration cycle in compressor 1.
Low temperature cold condensate is discharged to the external world after the heat of high temperature refrigerant is fully absorbed in casing subcooler 3.In casing mistake
The refrigerant of the highest temperature is cooled down in cooler 3 with the condensed water of low temperature, the heat transfer temperature difference for having maximum can obtain optimal heat exchange effect
Fruit, it is possible to achieve the recycling to greatest extent of cold.
Refrigerant by cryogenic condensation water cooling can not only increase refrigerating capacity, can also lower the power consumption of refrigeration, reach
Cold recovery and the purpose for reducing air-conditioning system power consumption.8 evaporated condensation water of indoor unit produces in heating operations, will not cause heat
Loss, when heating, can switch off the pump 12, therefore it is any to solve the problems, such as that condensed water cold recovery again will not have heating
Adverse effect.
Air-conditioning system realizes the recycling of condensed water cold by subcooler, reduces air-conditioning system and is taken away by condensed water
Cold.Simultaneously because reducing condensation temperature and pressure, the wasted work of system also can correspondingly be reduced, air-conditioning system is further reduced
The energy consumption of system.According to supercooling effect control condensate flow, to greatest extent using condensed water, utilization of condensed water is avoided not
Foot.
In the air-conditioning system that the specific embodiment of the invention provides, insulating layer, water tank 11 can be set outside water tank 11
Interior cryogenic condensation water cooling amount is lost in.Water tank 11 and 3 side surface upper part of casing subcooler are both provided with gap, when water level is excessive,
It can directly be flowed out from gap, improve stabilization of equipment performance.When being provided with multiple indoor units 8, the discharge outlet of multiple indoor units 8 is equal
By 9 joining water box 11 of drainpipe, collection efficiency is improved.
On the basis of the air-conditioning system that above-mentioned each embodiment provides, subcooler water outlet is provided with out water temperature
Sensor 2 is spent, refrigerant temperature sensor 4 is provided between subcooler and four-way valve 5, further includes communication connection leaving water temperature sensing
The controller 13 of device 2 and refrigerant temperature sensor 4, controller 13 can be sensed according to leaving water temperature sensors 2 and refrigerant temperature
The work of the testing result control water pump 12 of device 4.Wherein, water pump 12 can be variable frequency pump, realize frequency control, improve equipment
Controlled range.The water level sensor 10 of communication connection controller 13 can be also provided with water tank 11.
Using above-mentioned air-conditioning system, it can be achieved that intelligentized control method, control method include step：
Judge whether air-conditioning system is in refrigeration mode, if otherwise switching off the pump 11.
If it is, obtaining the water level information in water tank 11 by water level sensor 10, and water is judged by controller 13
Whether position is higher than preset height, if it is not, then representing that the water-holding quantity of water tank 11 is not enough to the work of supply subcooler, therefore closes
Water pump 11.
If it is, representing that the water-holding quantity of water tank 11 is enough the work for supplying subcooler, then water pump 12 is controlled with initial work
Working frequency starts, and starts the transporting low temperature condensed water into subcooler.
After preset time, the leaving water temperature T of subcooler water outlet is obtained by leaving water temperature sensors 22, lead to
Cross the refrigerant temperature T at the acquisition subcooler refrigerant exit of refrigerant temperature sensor 44, and preset temperature a is contrasted by controller 13
Leaving water temperature T2With refrigerant temperature T4, then the start and stop by the control variable frequency pump of controller 13 and working frequency；
If leaving water temperature is more than the difference of refrigerant temperature and preset temperature, i.e. T2>T4- a, then it represents that need to increase condensed water
Supply, then control the default working frequency of the increase of water pump 12；
If leaving water temperature is less than the difference of refrigerant temperature and twice of preset temperature, i.e. T2<T4- 2a, then it represents that need to reduce cold
Condensate supply, avoids wasting condensed water, then controls water pump 12 to reduce default working frequency；
If leaving water temperature is less than or equal to the difference of refrigerant temperature and preset temperature, and leaving water temperature is greater than or equal to refrigerant
Temperature and the difference of twice of preset temperature, i.e. T4-2a≤T2≤T4- a, then it represents that condensed water supply is suitable, then controls water pump 12
Keep present operating frequency.
The concrete numerical value of each parameter can be according to circumstances adjusted, within protection scope of the present invention, such as initialization
Frequency is specially 20Hz, and preset time is specially 1min, and preset temperature is 5 DEG C, and default working frequency is specially 1Hz.
Air-conditioning system provided by the present invention and its control method are described in detail above.Tool used herein
Body example is set forth the principle of the present invention and embodiment, and the explanation of above example is only intended to help to understand this hair
Bright method and its core concept.It should be pointed out that for those skilled in the art, the present invention is not being departed from
On the premise of principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention
It is required that protection domain in.
Claims (10)
1. a kind of air-conditioning system, including compressor (1), four-way valve (5), condenser (6), expansion valve (7) and indoor unit (8), its
It is characterized in that, further includes the water tank of water pump (12), subcooler and the low temperature cold condensate for collecting the indoor unit (8) discharge
(11), the water pump (12) connects the subcooler and the water tank (11) and can be by the low temperature in the water tank (11) respectively
Condensed water is delivered to the subcooler, and the subcooler is arranged between the compressor (1) outlet and the four-way valve (5),
And the high temperature refrigerant exported by compressor (1) described in cryogenic condensation water cooling.
2. air-conditioning system according to claim 1, it is characterised in that the subcooler is specially casing subcooler (3), institute
The refrigerant interface for stating casing subcooler (3) is respectively communicated with the compressor (1) and the four-way valve (5), described sleeve pipe subcooler
(3) water inlet connects the water pump (12), and the water outlet connection of described sleeve pipe subcooler (3) is extraneous.
3. air-conditioning system according to claim 2, it is characterised in that be provided with insulating layer outside the water tank (11).
4. air-conditioning system according to claim 3, it is characterised in that the water tank (11) and described sleeve pipe subcooler (3)
Side surface upper part is both provided with gap.
5. air-conditioning system according to claim 1, it is characterised in that including multiple indoor units (8), multiple rooms
The discharge outlet of interior machine (8) connects the water tank (11) by drainpipe (9).
6. according to the air-conditioning system described in claim 1 to 5 any one, it is characterised in that the subcooler water outlet is set
Leaving water temperature sensors (2) are equipped with, refrigerant temperature sensor (4) is provided between the subcooler and the four-way valve (5), also
Controller (13) including communicating to connect the leaving water temperature sensors (2) and the refrigerant temperature sensor (4), the control
Device (13) can be according to controlling the testing result of the leaving water temperature sensors (2) and the refrigerant temperature sensor (4)
The work of water pump (12).
7. air-conditioning system according to claim 6, it is characterised in that the water pump (12) is specially variable frequency pump.
8. air-conditioning system according to claim 7, it is characterised in that be provided with the water tank (11) described in communication connection
The water level sensor (10) of controller (13).
9. a kind of control method of air-conditioning system, it is characterised in that including step：
Judge whether the air-conditioning system is in refrigeration mode；
If it is, obtaining the water level information in water tank (11), and judge whether water level is higher than preset height；
If it is, control water pump (12) is started with initial operating frequency；
After preset time, the refrigerant temperature at the leaving water temperature and subcooler refrigerant exit of subcooler water outlet is obtained
Degree, and contrast the leaving water temperature and the refrigerant temperature；
If the leaving water temperature is more than the difference of the refrigerant temperature and preset temperature, control the water pump (12) increase default
Working frequency；
If the leaving water temperature is less than the difference of the refrigerant temperature and twice of preset temperature, the water pump (12) is controlled
Reduce the default working frequency；
If the leaving water temperature is less than or equal to the difference of the refrigerant temperature and the preset temperature, and the leaving water temperature is big
In or equal to the refrigerant temperature and twice of preset temperature difference, then control the water pump (12) to keep work at present frequency
Rate.
10. control method according to claim 9, it is characterised in that the initial operating frequency is specially 20Hz, described
Preset time is specially 1min, and the preset temperature is 5 DEG C, and the default working frequency is specially 1Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229124.7A CN108006865A (en) | 2017-11-29 | 2017-11-29 | Air-conditioning system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229124.7A CN108006865A (en) | 2017-11-29 | 2017-11-29 | Air-conditioning system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108006865A true CN108006865A (en) | 2018-05-08 |
Family
ID=62055014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711229124.7A Pending CN108006865A (en) | 2017-11-29 | 2017-11-29 | Air-conditioning system and its control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405236A (en) * | 2018-10-12 | 2019-03-01 | 珠海格力电器股份有限公司 | Air-conditioning control equipment, method, apparatus and air-conditioning |
| CN110274361A (en) * | 2019-06-21 | 2019-09-24 | 珠海格力电器股份有限公司 | The control method of water multi-gang air conditioner and its variable frequency pump |
| CN114234369A (en) * | 2021-12-13 | 2022-03-25 | 美的集团武汉暖通设备有限公司 | Multi-split system, operation control method, operation control device and storage medium thereof |
| CN117366696A (en) * | 2023-12-06 | 2024-01-09 | 珠海格力电器股份有限公司 | Condensed water treatment device, control method thereof and air conditioner refrigerating system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313007A (en) * | 1995-05-23 | 1996-11-29 | Mitsubishi Heavy Ind Ltd | Outdoor unit of air conditioner |
| CN202024619U (en) * | 2010-12-31 | 2011-11-02 | 北大方正集团有限公司 | Cooling tower circulating water system |
| CN102538312A (en) * | 2012-02-02 | 2012-07-04 | 广东美的电器股份有限公司 | Air conditioning system with super cooling |
| CN102679465A (en) * | 2012-05-07 | 2012-09-19 | 林智勇 | Energy-saving air conditioner |
| CN202993412U (en) * | 2012-11-30 | 2013-06-12 | 东莞市大能环保科技有限公司 | Split air conditioner heat dissipation device |
-
2017
- 2017-11-29 CN CN201711229124.7A patent/CN108006865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313007A (en) * | 1995-05-23 | 1996-11-29 | Mitsubishi Heavy Ind Ltd | Outdoor unit of air conditioner |
| CN202024619U (en) * | 2010-12-31 | 2011-11-02 | 北大方正集团有限公司 | Cooling tower circulating water system |
| CN102538312A (en) * | 2012-02-02 | 2012-07-04 | 广东美的电器股份有限公司 | Air conditioning system with super cooling |
| CN102679465A (en) * | 2012-05-07 | 2012-09-19 | 林智勇 | Energy-saving air conditioner |
| CN202993412U (en) * | 2012-11-30 | 2013-06-12 | 东莞市大能环保科技有限公司 | Split air conditioner heat dissipation device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405236A (en) * | 2018-10-12 | 2019-03-01 | 珠海格力电器股份有限公司 | Air-conditioning control equipment, method, apparatus and air-conditioning |
| CN110274361A (en) * | 2019-06-21 | 2019-09-24 | 珠海格力电器股份有限公司 | The control method of water multi-gang air conditioner and its variable frequency pump |
| CN110274361B (en) * | 2019-06-21 | 2020-09-01 | 珠海格力电器股份有限公司 | Water multi-connected air conditioning system and control method of variable-frequency water pump thereof |
| CN114234369A (en) * | 2021-12-13 | 2022-03-25 | 美的集团武汉暖通设备有限公司 | Multi-split system, operation control method, operation control device and storage medium thereof |
| CN117366696A (en) * | 2023-12-06 | 2024-01-09 | 珠海格力电器股份有限公司 | Condensed water treatment device, control method thereof and air conditioner refrigerating system |
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Application publication date: 20180508 |