CN109916111A - Air conditioning unit for reducing temperature by mixing chilled water and cooling water and control method thereof - Google Patents
Air conditioning unit for reducing temperature by mixing chilled water and cooling water and control method thereof Download PDFInfo
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- CN109916111A CN109916111A CN201910258672.5A CN201910258672A CN109916111A CN 109916111 A CN109916111 A CN 109916111A CN 201910258672 A CN201910258672 A CN 201910258672A CN 109916111 A CN109916111 A CN 109916111A
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- air
- cooling water
- conditioner set
- bypass line
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000000498 cooling water Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004378 air conditioning Methods 0.000 title abstract 5
- 230000007246 mechanism Effects 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000008520 organization Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
The invention provides an air conditioning unit for reducing temperature by mixing chilled water and cooling water and a control method thereof. The air conditioning unit comprises an evaporative condenser and a shell and tube heat exchanger, wherein the evaporative condenser is provided with a cooling water inlet, and the shell and tube heat exchanger is provided with a chilled water outlet. According to the air conditioning unit and the control method thereof, the return chilled water is led to the cooling water inlet, the temperature of the cooling water is reduced by utilizing the temperature of the chilled water, so that continuous and efficient heat exchange of the evaporative condenser is guaranteed, the energy efficiency of the air conditioning unit is further guaranteed, water is led from the return chilled water, the heat exchange of the evaporative condenser is continuously in an optimal state under the condition that the influence on the tail end is small, the heat exchange quantity of the evaporative condenser is continuously guaranteed under the condition that the heat exchange of the tail end is basically not influenced, the compressor is continuously operated in a reliable range, the fault rate of the unit is reduced, the energy efficiency of the whole unit is guaranteed, the abnormal fault shutdown frequency is reduced, and the experience of customers is greatly improved.
Description
Technical field
It is especially a kind of that chilled water is mixed to the sky for reducing temperature with cooling water the present invention relates to technical field of heat exchange equipment
Adjust unit and its control method.
Background technique
With the popularization and use of integration evaporation refrigeration technique, evaporates cold Screw chiller and step into the public visual field, vaporation-type
Condenser using the water film evaporation that condenser surface is covered with take away refrigerant heat, evaporative condenser heat transfer effect and cooling water into
Coolant-temperature gage has a very large relationship, if cooling water temperature increases, can reduce the heat exchange efficiency of evaporative condenser, high for a long time
Cooling water temperature operation or even air-conditioner set may lead to the problem of the shutdown of compressor high voltage protective, influence user experience.
Summary of the invention
In order to solve the excessively high technical problem of cooling water temperature, and providing a kind of mix chilled water with cooling water reduces temperature
The air-conditioner set and its control method of degree.
It is a kind of that chilled water is mixed to the air-conditioner set for reducing temperature, including evaporative condenser and package heat exchange with cooling water
Device is provided with cooling water inlet on the evaporative condenser, chilled water outlet, the sky is provided on the case tube heat exchanger
Adjusting unit further includes bypass line, and one end of the bypass line is connected to the cooling water inlet, the other end and the freezing
Water out connection.
Regulating mechanism is provided on the bypass line, the regulating mechanism controls the stream of chilled water in the bypass line
Amount.
It is provided with cooling water outlet on the evaporative condenser, is provided with temperature detector at the cooling water outlet
Structure, the temperature testing organization are electrically connected with the regulating mechanism.
The regulating mechanism is solenoid valve, the on-off of bypass line described in the solenoid valve control.
The air-conditioner set further includes water tank, and the water tank is connected to the cooling water inlet and the cooling water outlet
Form cooling cycle.
The air-conditioner set further includes water pump, and the water pump is set between the water tank and the cooling water inlet.
The air-conditioner set further includes check-valves, the outlet of the water pump and the regulating mechanism and the cooling water inlet
Middle position connection, the check-valves is set between the regulating mechanism and the middle position, and the check-valves
Communication direction is directed toward the cooling water inlet.
Water supplement port and/or discharge outlet are additionally provided on the water tank.
Spraying mechanism is provided in the evaporative condenser, the entrance of the spraying mechanism and the cooling water inlet connect
It is logical.
The air-conditioner set further includes compressor and throttle mechanism, the compressor, the evaporative condenser, the section
Stream mechanism and the case tube heat exchanger are sequentially connected in series to form heat exchange cycle.
The air-conditioner set is to evaporate cold Screw chiller.
A kind of control method of above-mentioned air-conditioner set, comprising:
S1, the lowest limit temperature T1 and highest threshold temperature T2 (T2 > T1) for setting cooling water, and it is cold to detect vaporation-type
The cooling water leaving water temperature T of condenser；
S2, compare T and T1 and T2, and adjust the working condition of bypass line according to comparison result.
In step s 2, further includes:
If T > T2 controls the bypass line and switches to connected state；
If T1 < T < T2, keeps the state of the bypass line constant；
If T < T1 controls the bypass line and switches to closed state.
In step s 2, further includes: in relatively T and T1 and T2, continue setting time, and adjust after setting time
Save the working condition of the bypass line.
The setting time is 10s.
It is provided by the invention that chilled water is mixed to the air-conditioner set and its control method for reducing temperature with cooling water, it will freeze
Water return water is led at cooling water inlet, the temperature of cooling water is reduced using the temperature of chilled water, to guarantee evaporative condenser
Lasting high efficient heat exchanging, and then guarantee air-conditioner set efficiency, and by chilled water return water carry out diversion, on end influence compared with
In the case where small, guarantee that evaporative condenser heat exchange is continuously in optimum state, and having substantially no effect on end heat exchange situation
Under, persistently guarantee the heat exchange amount of evaporative condenser, guarantees that compressor continues to run in confidence band, reduce unit failure
Rate guarantees complete machine efficiency, reduces abnormal failure machine stop times, substantially increases the experience property of client.
Detailed description of the invention
Fig. 1 is the air-conditioner set and its control method provided by the invention for mixing chilled water with cooling water and reducing temperature
The structural schematic diagram of the air-conditioner set of embodiment；
In figure:
1, evaporative condenser；2, case tube heat exchanger；11, cooling water inlet；21, chilled water outlet；3, bypass line；4,
Regulating mechanism；5, water tank.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
The present invention is further elaborated.It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, not
For limiting the present invention.
As shown in Figure 1 mixes chilled water with cooling water the air-conditioner set for reducing temperature, including 1 He of evaporative condenser
Case tube heat exchanger 2 is provided with cooling water inlet 11 on the evaporative condenser 1, is provided with freezing on the case tube heat exchanger 2
Water out 21, the air-conditioner set further include bypass line 3, and one end of the bypass line 3 and the cooling water inlet 11 connect
Logical, the other end is connected to the chilled water outlet 21, the temperature of cooling water is reduced using the temperature of chilled water, to guarantee to evaporate
The lasting high efficient heat exchanging of formula condenser 1, and then guarantee the efficiency of air-conditioner set, and diversion is carried out by chilled water return water, it is right
End influences to guarantee in lesser situation that the heat exchange amount of host side condenser is sufficient, so that complete machine continues reliability service, no
Client is influenced persistently to use.
Regulating mechanism 4 is provided on the bypass line 3, the regulating mechanism 4 controls chilled water in the bypass line 3
Flow, the connection of bypass line 3 can be also controlled using regulating mechanism 4, is closed between three kinds of states with aperture, it is special
The size of other aperture can be adjusted.
It is provided with cooling water outlet on the evaporative condenser 1, is provided with temperature detector at the cooling water outlet
Structure, the temperature testing organization are electrically connected with the regulating mechanism 4, and vaporation-type is discharged using temperature testing organization detection cooling water
The temperature of condenser 1, and according to the state of temperature value adjusting regulating mechanism 4, realize the control to bypass line 3.
The regulating mechanism 4 is solenoid valve, the on-off of bypass line 3 described in the solenoid valve control.
The air-conditioner set further includes water tank 5, and the water tank 5 and the cooling water inlet 11 and the cooling water outlet are equal
Connection forms cooling cycle, and water tank 5 can store cooling water, guarantee that cooling water meets the use of evaporative condenser 1.
The air-conditioner set further includes water pump, and the water pump is set between the water tank 5 and the cooling water inlet 11,
For cooling water to be sent into evaporative condenser 1.
The air-conditioner set further includes check-valves, and the outlet of the water pump enters with the regulating mechanism 4 and the cooling water
The middle position connection of mouth 11, the check-valves is set between the regulating mechanism 4 and the middle position, and the non-return
The communication direction of valve is directed toward the cooling water inlet 11, namely cooling water is prevented to be back to chilled water outlet under the pressure of water pump
System is caused to can not work normally at 21.
Water supplement port and/or discharge outlet are additionally provided on the water tank 5.
Spraying mechanism, the entrance of the spraying mechanism and the cooling water inlet are provided in the evaporative condenser 1
11 connections.
The air-conditioner set further includes compressor and throttle mechanism, the compressor, the evaporative condenser 1, described
Throttle mechanism and the case tube heat exchanger 2 are sequentially connected in series to form heat exchange cycle.
The air-conditioner set is to evaporate cold Screw chiller.
A kind of control method of above-mentioned air-conditioner set, comprising:
S1, the lowest limit temperature T1 and highest threshold temperature T2 (T2 > T1) for setting cooling water, and it is cold to detect vaporation-type
The cooling water leaving water temperature T of condenser 1, wherein T1 and T2 is set according to actual operation requirements and condition etc.；
S2, compare T and T1 and T2, and adjust the working condition of bypass line 3 according to comparison result.
In step s 2, further includes:
If T > T2, controls the bypass line 3 and switch to connected state；
If T1 < T < T2, keeps the state of the bypass line 3 constant；
If T < T1, controls the bypass line 3 and switch to closed state.
In step s 2, further includes: in relatively T and T1 and T2, continue setting time, and root after setting time
The working condition of the bypass line 3 is adjusted according to comparison result.
The setting time is 10s.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (15)
1. a kind of air-conditioner set, including evaporative condenser (1) and case tube heat exchanger (2), set on the evaporative condenser (1)
It is equipped with cooling water inlet (11), is provided with chilled water outlet (21) on the case tube heat exchanger (2), it is characterised in that: the sky
Adjusting unit further includes bypass line (3), and one end of the bypass line (3) is connected to the cooling water inlet (11), the other end
It is connected to the chilled water outlet (21).
2. air-conditioner set according to claim 1, it is characterised in that: be provided with regulating mechanism on the bypass line (3)
(4), the flow of regulating mechanism (4) the control interior chilled water of the bypass line (3).
3. air-conditioner set according to claim 2, it is characterised in that: be provided with cooling on the evaporative condenser (1)
Water out is provided with temperature testing organization, the temperature testing organization and the regulating mechanism (4) electricity at the cooling water outlet
Connection.
4. air-conditioner set according to claim 2, it is characterised in that: the regulating mechanism (4) is solenoid valve, the electromagnetism
Valve controls the on-off of the bypass line (3).
5. air-conditioner set according to claim 3, it is characterised in that: the air-conditioner set further includes water tank (5), the water
Case (5) is connected to form cooling cycle with the cooling water inlet (11) and the cooling water outlet.
6. air-conditioner set according to claim 5, it is characterised in that: the air-conditioner set further includes water pump, the water pump
It is set between the water tank (5) and the cooling water inlet (11).
7. air-conditioner set according to claim 6, it is characterised in that: the air-conditioner set further includes check-valves, the water
The outlet of pump is connected to the middle position of the regulating mechanism (4) and the cooling water inlet (11), and the check-valves is set to
Between the regulating mechanism (4) and the middle position, and the communication direction of the check-valves is directed toward the cooling water inlet
(11)。
8. air-conditioner set according to claim 5, it is characterised in that: be additionally provided on the water tank (5) water supplement port and/or
Discharge outlet.
9. air-conditioner set according to claim 1, it is characterised in that: be provided with spray in the evaporative condenser (1)
Mechanism, the entrance of the spraying mechanism are connected to the cooling water inlet (11).
10. air-conditioner set according to claim 1, it is characterised in that: the air-conditioner set further includes compressor and throttling
Mechanism, the compressor, the evaporative condenser (1), the throttle mechanism and the case tube heat exchanger (2) are sequentially connected in series shape
At heat exchange cycle.
11. air-conditioner set according to claim 1, it is characterised in that: the air-conditioner set is to evaporate cold Screw chiller.
12. a kind of control method of air-conditioner set described in any one of claims 1 to 11, it is characterised in that: include:
S1, the lowest limit temperature T1 and highest threshold temperature T2 (T2 > T1) for setting cooling water, and detect evaporative condenser
(1) cooling water leaving water temperature T；
S2, compare T and T1 and T2, and adjust the working condition of bypass line (3) according to comparison result.
13. control method according to claim 12, it is characterised in that: in step s 2, further includes:
If T > T2, controls the bypass line (3) and switch to connected state；
If T1 < T < T2, keeps the state of the bypass line (3) constant；
If T < T1, controls the bypass line (3) and switch to closed state.
14. control method according to claim 12, it is characterised in that: in step s 2, further includes: in relatively T and T1
When with T2, continue setting time, and adjusts the working condition of the bypass line (3) after setting time.
15. control method according to claim 14, it is characterised in that: the setting time is 10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910258672.5A CN109916111A (en) | 2019-04-01 | 2019-04-01 | Air conditioning unit for reducing temperature by mixing chilled water and cooling water and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910258672.5A CN109916111A (en) | 2019-04-01 | 2019-04-01 | Air conditioning unit for reducing temperature by mixing chilled water and cooling water and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109916111A true CN109916111A (en) | 2019-06-21 |
Family
ID=66968018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910258672.5A Pending CN109916111A (en) | 2019-04-01 | 2019-04-01 | Air conditioning unit for reducing temperature by mixing chilled water and cooling water and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109916111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061164A (en) * | 2021-11-23 | 2022-02-18 | 南京久鼎环境科技股份有限公司 | Efficient transcritical carbon dioxide refrigerating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1163730A (en) * | 1997-08-20 | 1999-03-05 | Sanyo Electric Co Ltd | Condenser |
| TW522214B (en) * | 1999-12-08 | 2003-03-01 | Usui International Industry | Temperature adjusting device for thermal fluid medium |
| AU2002344695B2 (en) * | 2001-07-06 | 2006-11-02 | Ozone Manufacturing Pty. Ltd. | Heating, ventilation or air conditioning water purifiers |
| WO2009143660A1 (en) * | 2008-05-26 | 2009-12-03 | Liu Jidong | An internal circulation recombination energy heating and cooling device |
| CN203478664U (en) * | 2013-07-15 | 2014-03-12 | 浙江思科国祥制冷设备有限公司 | Vapour compression cycle and air cooling combined year-round refrigeration equipment |
| CN104697226A (en) * | 2015-03-17 | 2015-06-10 | 浙江国祥空调设备有限公司 | Evaporation condensation water chilling unit with free cooling device |
| CN106196730A (en) * | 2016-08-24 | 2016-12-07 | 佛山市新鹏工业服务有限公司 | A kind of air energy Water temp controller group and use its water-bath system |
| CN106288092A (en) * | 2016-09-30 | 2017-01-04 | 海南唯视雅科工程服务有限公司 | A kind of have the centrifugal refrigerating host computer system preventing surge phenomenon |
| CN206669949U (en) * | 2017-05-02 | 2017-11-24 | 浙江国祥股份有限公司 | Recovery type heat evaporating condensation type handpiece Water Chilling Units |
| CN107560207A (en) * | 2017-08-15 | 2018-01-09 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method thereof |
| CN109489282A (en) * | 2018-11-09 | 2019-03-19 | 青岛海尔空调电子有限公司 | Evaporative condenser water cooler |
| CN209726579U (en) * | 2019-04-01 | 2019-12-03 | 珠海格力电器股份有限公司 | Air conditioning unit for reducing temperature by mixing chilled water and cooling water |
-
2019
- 2019-04-01 CN CN201910258672.5A patent/CN109916111A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1163730A (en) * | 1997-08-20 | 1999-03-05 | Sanyo Electric Co Ltd | Condenser |
| TW522214B (en) * | 1999-12-08 | 2003-03-01 | Usui International Industry | Temperature adjusting device for thermal fluid medium |
| AU2002344695B2 (en) * | 2001-07-06 | 2006-11-02 | Ozone Manufacturing Pty. Ltd. | Heating, ventilation or air conditioning water purifiers |
| WO2009143660A1 (en) * | 2008-05-26 | 2009-12-03 | Liu Jidong | An internal circulation recombination energy heating and cooling device |
| CN203478664U (en) * | 2013-07-15 | 2014-03-12 | 浙江思科国祥制冷设备有限公司 | Vapour compression cycle and air cooling combined year-round refrigeration equipment |
| CN104697226A (en) * | 2015-03-17 | 2015-06-10 | 浙江国祥空调设备有限公司 | Evaporation condensation water chilling unit with free cooling device |
| CN106196730A (en) * | 2016-08-24 | 2016-12-07 | 佛山市新鹏工业服务有限公司 | A kind of air energy Water temp controller group and use its water-bath system |
| CN106288092A (en) * | 2016-09-30 | 2017-01-04 | 海南唯视雅科工程服务有限公司 | A kind of have the centrifugal refrigerating host computer system preventing surge phenomenon |
| CN206669949U (en) * | 2017-05-02 | 2017-11-24 | 浙江国祥股份有限公司 | Recovery type heat evaporating condensation type handpiece Water Chilling Units |
| CN107560207A (en) * | 2017-08-15 | 2018-01-09 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method thereof |
| CN109489282A (en) * | 2018-11-09 | 2019-03-19 | 青岛海尔空调电子有限公司 | Evaporative condenser water cooler |
| CN209726579U (en) * | 2019-04-01 | 2019-12-03 | 珠海格力电器股份有限公司 | Air conditioning unit for reducing temperature by mixing chilled water and cooling water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061164A (en) * | 2021-11-23 | 2022-02-18 | 南京久鼎环境科技股份有限公司 | Efficient transcritical carbon dioxide refrigerating system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190621 |