CN106642608B - Paint spraying chamber circulating air system of coating workshop - Google Patents
Paint spraying chamber circulating air system of coating workshop Download PDFInfo
- Publication number
- CN106642608B CN106642608B CN201710095477.6A CN201710095477A CN106642608B CN 106642608 B CN106642608 B CN 106642608B CN 201710095477 A CN201710095477 A CN 201710095477A CN 106642608 B CN106642608 B CN 106642608B
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- air conditioner
- hot water
- cold water
- air
- heat recovery
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Abstract
The invention relates to a paint spraying chamber circulating air system of a coating workshop, which comprises an air conditioner for providing circulating air for a spraying chamber of the coating workshop, a heat recovery unit for providing cold water and hot water for the air conditioner, a cold water outlet and a cold water return opening of the heat recovery unit are respectively connected with a cold water inlet and a cold water return opening of the air conditioner through an air conditioner cold water supply pipe and an air conditioner cold water return pipe, a hot water outlet and a hot water return opening of the heat recovery unit are respectively connected with a hot water inlet and a hot water return opening of the air conditioner through an air conditioner hot water supply pipe and an air conditioner hot water return pipe, an air conditioner cold water supply pipe, an air conditioner cold water return pipe and an air conditioner hot water supply pipe, the air conditioner hot water return pipe is respectively provided with a control valve, and an automatic adjusting three-way valve for controlling the water supply amount of cold water and hot water is respectively arranged between the control valve and a cold and hot water inlet of the air conditioner on the air conditioner cold water supply pipe and the air conditioner hot water supply pipe. The invention can effectively utilize the low-grade heat of the air conditioner, and achieves the purposes of saving energy and protecting the environment.
Description
Technical Field
The invention relates to a circulating air system of a paint spraying chamber of a coating workshop.
Background
The circulating air is used for replacing (or partially replacing) fresh air supply volume in a paint spraying room of a coating workshop, the temperature and humidity of the circulating air are relatively close to the required air supply temperature and humidity, and the energy consumption required by regulation can be greatly reduced, so that the circulating air technology is widely applied to coating and spraying.
The exhausted air of the spray chamber treated by the wet (water washing) paint mist trapping device has increased moisture content, and can be recycled after dehumidification and temperature regulation. The circulating air conditioner is provided with two process sections of surface cooling dehumidification and heating, and the two process sections are used for respectively carrying out dehumidification and heating treatment on circulating air.
At present, in the operation process of an air conditioner for supplying circulating air to a paint spraying chamber of a coating workshop, a large amount of condensation heat discharged to the environment by the air conditioner cannot be completely utilized and is basically and directly discharged, so that a large amount of energy is wasted, and low-grade heat generated in the air conditioner cannot be effectively utilized.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems and to providing a circulating air system for a paint spray booth in a paint shop, which can effectively utilize low-grade heat generated in an air conditioner and return the heat to the air conditioner, so that the air conditioner can provide circulating air meeting temperature requirements to the paint spray booth in the paint shop.
In order to achieve the purpose, the invention adopts the following technical scheme:
a paint spraying chamber circulating air system of a coating workshop comprises an air conditioner for providing circulating air for a spraying chamber of the coating workshop, a heat recovery unit for providing cold water and hot water for the air conditioner, wherein a cold water outlet and a cold water return opening of the heat recovery unit are respectively connected with a cold water inlet and a cold water return opening of the air conditioner through an air conditioner cold water supply pipe and an air conditioner cold water return pipe, a hot water outlet and a hot water return opening of the heat recovery unit are respectively connected with a hot water inlet and a hot water return opening of the air conditioner through an air conditioner hot water supply pipe and an air conditioner hot water return pipe, control valves are respectively arranged on the air conditioner cold water supply pipe, the air conditioner cold water return pipe, the air conditioner hot water supply pipe and the air conditioner hot water supply pipe, and an automatic adjusting three-way valve for controlling the supply amount of the cold water and the hot water is respectively arranged between the control valves and the cold water inlet and the hot water inlet of the air conditioner, the other valve port of the automatic adjusting three-way valve is connected with an air conditioner cold water return pipe and an air conditioner hot water return pipe.
And circulating pumps are respectively arranged on the air conditioner cold water supply pipe and the air conditioner hot water supply pipe.
And temperature sensors are respectively arranged on the air conditioner cold water return pipe and the air conditioner hot water return pipe.
The refrigeration water circulation pipeline formed by the air conditioner cold water supply pipe and the air conditioner cold water return pipe is connected with a refrigeration water source which provides auxiliary refrigeration water and has an auxiliary effect, and the hot water circulation pipeline formed by the air conditioner hot water supply pipe and the air conditioner hot water return pipe is connected with a hot water source which provides auxiliary hot water and has an auxiliary effect.
The auxiliary chilled water supply pipeline which is connected with the chilled water circulation pipeline and used for the auxiliary chilled water source is provided with a normally closed cold water valve, and the auxiliary hot water supply pipeline which is connected with the hot water circulation pipeline and used for the auxiliary hot water source is provided with a normally closed hot water valve.
The interface of the auxiliary chilled water supply pipeline and the chilled water circulation pipeline is arranged between the control valve and the automatic adjusting three-way valve on the chilled water circulation pipeline, and the interface of the auxiliary hot water supply pipeline and the hot water circulation pipeline is arranged between the control valve and the automatic adjusting three-way valve on the hot water circulation pipeline.
The heat recovery unit comprises a main heat recovery unit and a standby heat recovery unit.
The heat recovery unit utilizes a large amount of condensation heat discharged to the environment by the air conditioner for providing circulating air for the spraying chamber of the coating workshop, heats water through heat exchange of the unit and then returns the water to the air conditioner for use, can effectively utilize low-grade heat generated in the air conditioner, and achieves the purposes of saving energy and protecting the environment.
Drawings
Fig. 1 is a schematic structural diagram of a circulating air system of a paint spray booth of a paint shop according to an embodiment of the present invention.
Detailed Description
The essential features and advantages of the invention will be further described below with reference to examples, but the invention is not limited to the examples listed.
Referring to fig. 1, a paint shop spray booth circulating air system includes:
an air conditioner for providing circulating air for a spraying room of a coating workshop, a heat recovery unit for providing cold water and hot water for the air conditioner, wherein a cold water outlet and a cold water return opening of the heat recovery unit are respectively connected with a cold water inlet and a cold water return opening of the air conditioner through an air conditioner cold water supply pipe 13 and an air conditioner cold water return pipe 13, a hot water outlet and a hot water return opening of the heat recovery unit are respectively connected with a hot water inlet and a hot water return opening of the air conditioner through an air conditioner hot water supply pipe 15 and an air conditioner hot water return pipe 16, circulating pumps are respectively arranged on the air conditioner cold water supply pipe and the air conditioner hot water supply pipe, temperature sensors are respectively arranged on the air conditioner cold water return pipe and the air conditioner hot water return pipe, the air conditioner cold water supply pipe and the air conditioner hot water supply pipe which form a chilled water circulating pipeline of the air conditioner, and the air conditioner hot water supply pipe which form a hot water circulating pipeline of the air conditioner, And the other valve port of the automatic adjusting three-way valve is connected with the air conditioner cold water return pipe and the air conditioner hot water return pipe.
The heat recovery unit absorbs the return water heat of chilled water sent by an external air conditioner through a refrigerant, releases the heat to heat the return water sent into the air conditioner, and then sends the return water into the air conditioner, the air conditioner works by utilizing the sent return water to send circulating air out of a spray booth, and when the return water is not recovered, the heat is released into the atmosphere.
In the present invention, the heat recovery unit includes a main heat recovery unit 1 and a standby heat recovery unit 11, and one main heat recovery unit and one standby heat recovery unit operate. The main heat recovery unit 1 and the standby heat recovery unit 11 form a refrigeration station.
In the present invention, the temperature of the water supplied from the cold water supply pipe of the air conditioner is 17 to 20 ℃, and the temperature of the water supplied from the hot water supply pipe of the air conditioner is 40 to 50 ℃.
In the invention, a cold water forming heat exchanger module (evaporator) for forming cold water at 17-20 ℃ and a hot water forming heat exchanger module (condenser) for forming hot water at 40-50 ℃ are respectively arranged in the main heat recovery unit and the standby heat recovery unit.
In the present invention, the control valves include a first control valve 4, a second control valve 7, a third control valve 8, and a fourth control valve 9.
In the present invention, the number of the automatic adjusting three-way valves is two, and the two automatic adjusting three-way valves include a first automatic adjusting three-way valve 5 and a second automatic adjusting three-way valve 6, the first automatic adjusting three-way valve 5 connects the air conditioner cold water supply pipe with the air conditioner cold water return pipe, and the second automatic adjusting three-way valve 6 connects the air conditioner hot water supply pipe with the air conditioner hot water return pipe.
Wherein, first automatically regulated three-way valve 5 and second automatically regulated three-way valve 6 are used for adjusting cold water quantity and hot water quantity respectively, specifically are according to the aperture of the temperature and humidity control demand first automatically regulated three-way valve 5 of air conditioner and second automatically regulated three-way valve 6, realize the change of cold water quantity and hot water quantity.
Specifically, the circulation pump includes a first circulation pump 2 and a second circulation pump 12, which are respectively used for feeding cold water and hot water into the air conditioner to perform supply and transportation control of the cold water and the hot water.
Specifically, the temperature sensors include a first temperature sensor 3 and a second temperature sensor 10, which are respectively used for detecting the return water temperature of the air conditioner cold water and the return water temperature of the air conditioner hot water.
The main heat recovery unit and/or the standby heat recovery unit of the invention utilize a large amount of condensation heat discharged to the environment by the air conditioner, heat water is heated by the heat exchange of the units and then returns to the air conditioner, thereby providing a system for supplying hot water required by users. The system is different from a water-cooling cold water system in that heat in circulating water is discharged to the air through a cooling tower, and can effectively utilize low-grade heat generated in an air conditioner, thereby achieving the purposes of saving energy and protecting the environment.
In the invention, the heat recovery of the refrigeration station can realize total heat recovery, namely, the hot water is prepared by utilizing the total condensation heat discharged to the environment by an air conditioner.
When the air conditioner works, condensation heat generated by the air conditioner is carried by high-temperature cold water and circulated to the main heat recovery unit and/or the evaporator of the standby heat recovery unit through the circulating pump, the heat recovery unit works in a heat recovery mode, absorbs heat from a refrigerant and changes the heat into low-temperature cold water (17-20 ℃), and then the cold water is circulated to the air conditioner and the like. The refrigerant absorbs heat and is compressed and then is heated in the condenser to change the low-temperature hot water into high-temperature hot water (40-50 ℃), and the high-temperature hot water is also circulated to the air conditioner through the circulating pump.
Further, in the present invention, the chilled water circulation pipeline formed by the air-conditioning cold water supply pipe and the air-conditioning cold water return pipe is further connected to a chilled water source for providing auxiliary chilled water, and the hot water circulation pipeline formed by the air-conditioning hot water supply pipe and the air-conditioning hot water return pipe is further connected to an auxiliary hot water source for providing auxiliary hot water, as shown in fig. 1.
Specifically, a normally closed cold water valve (not shown) is arranged on an auxiliary chilled water supply pipeline, where the auxiliary chilled water source is connected with the chilled water circulation pipeline, and a normally closed hot water valve (not shown) is arranged on an auxiliary hot water supply pipeline, where the auxiliary hot water source is connected with the hot water circulation pipeline.
Specifically, the interface of the auxiliary chilled water supply line and the chilled water circulation line is between a control valve and an automatic regulating three-way valve (a first automatic regulating three-way valve) on the chilled water circulation line, and the interface of the auxiliary hot water supply line and the hot water circulation line is between a control valve and an automatic regulating three-way valve (a second automatic regulating three-way valve) on the hot water circulation line.
It should be noted that the auxiliary chilled water source may be provided by other refrigeration stations. The auxiliary hot water source may be provided by a hot water boiler.
The following description of the control process and flow of the cold and hot water supply and return water of the air conditioner in the system of the present invention with reference to fig. 1 as an example according to the preferred embodiment of the present invention is as follows:
when the air conditioner does not operate, a large amount of condensation heat generated when the air conditioner operates is not required to be supplied with water and recovered, and at the moment, the water supplied by the main heat recovery unit and/or the standby heat recovery unit flows back to the main heat recovery unit and/or the standby heat recovery unit through a bypass formed by an automatic adjusting three-way valve; when the air conditioner is in operation, the three-way valve can be controlled to open corresponding opening according to a temperature and humidity control module or device at an air conditioner outlet, cold water and hot water of the main heat recovery unit and/or the standby heat recovery unit are supplied to the air conditioner wholly or partially, so that the balance control of the temperature and the humidity of the air conditioner is achieved, and circulating air with adaptive temperature and humidity generated by the air conditioner is sent into the paint spraying chamber.
The main heat recovery unit and/or the standby heat recovery unit are/is arranged, only the main heat recovery unit is arranged for normal production, the temperature of cold water supplied to an outlet of the heat recovery unit can be set to be 7-12 ℃ through a control system, and the standby heat recovery unit is automatically started when the fact that the refrigerating capacity cannot meet the production requirement is detected; when a temperature sensor on a cold water return pipe of the air conditioner detects that the return water temperature is too high and exceeds 18 ℃, the requirement of external cold water is judged to be large, and a standby heat recovery unit needs to be started to work.
In order to realize the multifunction of the refrigerating station, the heat recovery unit of the refrigerating station has three modes of refrigeration, heating and heat recovery, and the heat recovery mode is used in normal production.
When the system is in daily production, the air conditioner and the heat recovery unit are simultaneously started , the heat recovery unit simultaneously refrigerates and heats, the temperature and humidity regulation requirements of the air conditioner are met, and when extreme climate occurs and the two heat recovery units are simultaneously started and cannot meet the requirements of the air conditioner, the system can start a hot water source with an auxiliary function to provide hot water for auxiliary supply.
The boiler hot water valve of the hot water source with the auxiliary function is in a closed state in normal production, when extreme weather occurs, the return water temperature is detected to be too low on the air conditioner hot water return pipeline, the boiler hot water valve is manually opened, the air conditioner is heated by using boiler room hot water, and the boiler hot water valve is closed after stable production. Because the temperature of the hot water in the boiler room is generally high, when the hot water in the boiler room needs to be switched, the third control valve and the fourth control valve need to be closed.
In the invention, the chilled water valve of the refrigeration water source with the auxiliary function is in a closed state during normal production, when the cold energy of the two heat recovery units is insufficient and the return water temperature on the cold water return pipeline of the air conditioner is detected to be overhigh, the chilled water valve can be manually opened to increase the cold water supply of the air conditioner, and the chilled water valve is closed after the production is stable.
The heat recovery unit of the system can realize the refrigeration and heating functions at the same time, can meet the requirements of cold water and hot water of a circulating air conditioner, meets the use requirement of circulating air of a spray booth, utilizes a large amount of condensation heat discharged to the environment by the air conditioner for providing the circulating air for the spray booth of a coating workshop, heats water through heat exchange of the unit and then returns the water to the air conditioner for use, can effectively utilize low-grade heat generated in the air conditioner, and achieves the purposes of saving energy and protecting the environment.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. A paint spraying chamber circulating air system for a coating workshop is characterized by comprising an air conditioner and a heat recovery unit, wherein the air conditioner is used for providing circulating air for a spraying chamber of the coating workshop, the heat recovery unit is used for providing cold water and hot water for the air conditioner, a cold water outlet and a cold water return opening of the heat recovery unit are respectively connected with a cold water inlet and a cold water return opening of the air conditioner through an air conditioner cold water supply pipe and an air conditioner cold water return pipe, a hot water outlet and a hot water return opening of the heat recovery unit are respectively connected with a hot water inlet and a hot water return opening of the air conditioner through an air conditioner hot water supply pipe and an air conditioner hot water return pipe, control valves are respectively arranged on the air conditioner cold water supply pipe and the air conditioner hot water supply pipe between the control valves and the cold water inlet of the air conditioner, The other valve port of the automatic adjusting three-way valve is connected with an air conditioner cold water return pipe and an air conditioner hot water return pipe;
temperature sensors are respectively arranged on the air conditioner cold water return pipe and the air conditioner hot water return pipe;
a chilled water circulating pipeline formed by the air-conditioning cold water supply pipe and the air-conditioning cold water return pipe is connected with a chilled water source which provides auxiliary chilled water and has an auxiliary function, and a hot water circulating pipeline formed by the air-conditioning hot water supply pipe and the air-conditioning hot water return pipe is connected with an auxiliary hot water source which provides auxiliary hot water;
a normally closed cold water valve is arranged on an auxiliary chilled water supply pipeline, which is connected with the chilled water circulation pipeline, of the chilled water source with the auxiliary function, and a normally closed hot water valve is arranged on an auxiliary hot water supply pipeline, which is connected with the hot water circulation pipeline, of the hot water source with the auxiliary function;
the heat recovery unit comprises a main heat recovery unit and a standby heat recovery unit, only the main heat recovery unit is started for normal production, and when a temperature sensor on an air conditioning cold water return pipe detects that the return water temperature is too high, the standby heat recovery unit is started to work;
when the air conditioner runs, the automatic adjusting three-way valve is controlled to open corresponding opening according to the temperature and humidity control module at the outlet of the air conditioner, and all or part of the cold water and hot water of the main heat recovery unit and/or the standby heat recovery unit are supplied to the air conditioner so as to achieve balance control of the temperature and humidity of the air conditioner and enable the air conditioner to generate circulating air with adaptive temperature and humidity and send the circulating air into the paint spraying chamber.
2. The paint shop paint spray booth circulating air system according to claim 1, wherein a circulating pump is provided on each of the air-conditioning cold water supply pipe and the air-conditioning hot water supply pipe.
3. The paint shop paint spray booth circulating air system according to claim 1, wherein the auxiliary chilled water supply line and the chilled water circulating line are connected between the control valve on the chilled water circulating line and the automatically adjusting three-way valve, and the auxiliary hot water supply line and the hot water circulating line are connected between the control valve on the hot water circulating line and the automatically adjusting three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095477.6A CN106642608B (en) | 2017-02-22 | 2017-02-22 | Paint spraying chamber circulating air system of coating workshop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095477.6A CN106642608B (en) | 2017-02-22 | 2017-02-22 | Paint spraying chamber circulating air system of coating workshop |
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| Publication Number | Publication Date |
|---|---|
| CN106642608A CN106642608A (en) | 2017-05-10 |
| CN106642608B true CN106642608B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710095477.6A Active CN106642608B (en) | 2017-02-22 | 2017-02-22 | Paint spraying chamber circulating air system of coating workshop |
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| CN (1) | CN106642608B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676900A (en) * | 2017-10-17 | 2018-02-09 | 上海市安装工程集团有限公司 | A kind of low-temperature receiver control system and its application method |
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| CN101626675A (en) * | 2009-08-14 | 2010-01-13 | 曙光信息产业(北京)有限公司 | Heat dissipating device for cooling machine cabinet |
| CN203704266U (en) * | 2013-12-19 | 2014-07-09 | 东风设计研究院有限公司 | Circulating air conditioner heat pump system |
| CN203824007U (en) * | 2014-04-01 | 2014-09-10 | 北京工业大学 | Thermosiphonhot-water system for domestic air conditionerexhaust energyrecovery |
| CN105222229A (en) * | 2015-10-15 | 2016-01-06 | 江苏骠马智能装备股份有限公司 | A kind of paint spray booth wind circulating system |
| JP3202922U (en) * | 2015-11-06 | 2016-03-03 | 安彦 荒井 | air conditioner |
| CN205678799U (en) * | 2016-03-25 | 2016-11-09 | 上海阿尔西空调系统服务有限公司 | The water resource heat pump heater that cooling water heat reclaims |
| CN206572715U (en) * | 2017-02-22 | 2017-10-20 | 中国汽车工业工程有限公司 | A kind of Painting Shop paint spray booth wind circulating system |
-
2017
- 2017-02-22 CN CN201710095477.6A patent/CN106642608B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626675A (en) * | 2009-08-14 | 2010-01-13 | 曙光信息产业(北京)有限公司 | Heat dissipating device for cooling machine cabinet |
| CN203704266U (en) * | 2013-12-19 | 2014-07-09 | 东风设计研究院有限公司 | Circulating air conditioner heat pump system |
| CN203824007U (en) * | 2014-04-01 | 2014-09-10 | 北京工业大学 | Thermosiphonhot-water system for domestic air conditionerexhaust energyrecovery |
| CN105222229A (en) * | 2015-10-15 | 2016-01-06 | 江苏骠马智能装备股份有限公司 | A kind of paint spray booth wind circulating system |
| JP3202922U (en) * | 2015-11-06 | 2016-03-03 | 安彦 荒井 | air conditioner |
| CN205678799U (en) * | 2016-03-25 | 2016-11-09 | 上海阿尔西空调系统服务有限公司 | The water resource heat pump heater that cooling water heat reclaims |
| CN206572715U (en) * | 2017-02-22 | 2017-10-20 | 中国汽车工业工程有限公司 | A kind of Painting Shop paint spray booth wind circulating system |
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| CN106642608A (en) | 2017-05-10 |
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