CN110986195B - Fresh air conditioner for coating workshop and constant temperature and humidity control method thereof - Google Patents
Fresh air conditioner for coating workshop and constant temperature and humidity control method thereof Download PDFInfo
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- CN110986195B CN110986195B CN201911376480.0A CN201911376480A CN110986195B CN 110986195 B CN110986195 B CN 110986195B CN 201911376480 A CN201911376480 A CN 201911376480A CN 110986195 B CN110986195 B CN 110986195B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 title claims abstract description 18
- 238000000576 coating method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000010422 painting Methods 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 7
- 230000030279 gene silencing Effects 0.000 claims description 2
- 238000007791 dehumidification Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- 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
- F24F13/28—Arrangement or mounting of filters
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention discloses a fresh air conditioner for a coating workshop and a constant temperature and humidity control method. The fresh air conditioner for the coating workshop is characterized in that an air inlet section, a primary heating section, a humidifying section, a surface cooling section, a secondary heating section and an air supply section are sequentially arranged between an air inlet and an air outlet. The fresh air conditioner for the painting workshop can humidify fresh air firstly in transitional seasons, humidifies the fresh air to a ④ area, then performs surface cooling, dehumidification and secondary heating, and treats the fresh air to an air supply state for air supply. The outdoor air state is in ③ area or ④ area, the process can be used for processing, so that the operation mode in the transition season is adjusted to be a processing mode, the control mode is not required to be switched, frequent start and stop of the humidifier are avoided, the temperature and humidity imbalance phenomenon in the air supply state in the transition season is avoided, the stability of air supply in the transition season is ensured, and the method is particularly suitable for being used in coating workshops with long duration in the northern transition season.
Description
Technical Field
The invention relates to a fresh air conditioner for a coating workshop, and simultaneously relates to a constant temperature and humidity control method for the fresh air conditioner for the coating workshop, belonging to the technical field of process air conditioners.
Background
The fresh air conditioner for the painting workshop is a technological central air conditioner, and the air supply requirement of constant temperature and humidity needs to be met in the using process. The functional sections of the fresh air conditioner of the painting workshop are generally arranged in the following form: the air inlet section, the primary filtering section, the natural gas heating section, the surface cooling section, the humidifying section, the secondary heating section, the fan section, the silencing section, the middle-effect filtering section and the air supply section. For example, in publication No.: the Chinese patent of CN208804815U discloses a combined coating air conditioner unit with a similar structure, wherein the inside of the machine body is sequentially divided into a mixing section, a primary filtering section, a surface cooling dehumidifying section, a heating section, a humidifying section, a fan section, a flow equalizing section, a middle-effect filtering section, a high-efficiency filtering section, a sterilizing section, an air outlet section and a main machine section from left to right. The existing fresh air conditioner for the painting workshop has the following control modes, referring to a wet air enthalpy and humidity diagram shown in fig. 1, when outdoor air state points are in ① areas and ② areas, the air treatment mode is gas heating-humidifying-air supplying; when the outdoor air state point is at ③ area, the air treatment mode is surface cooling, humidifying and air supplying; when the outdoor air state point is in ④ areas, the air treatment mode comprises surface cooling, dehumidifying, secondary heating and air supply.
The traditional fresh air conditioner functional section in the coating industry is arranged as a surface cooling section and a humidifying section, and the phenomenon of air supply temperature imbalance can occur in the transition season of the northern area in the control mode of the fresh air conditioner. Because the northern transition season comprises the whole area of the ③ area and the partial area adjacent to the ③ area in the ④ area, when the outdoor air state point is near the critical point of the ③ area and the ④ area, two working condition humiture can appear in one day. As shown in fig. 1, the conventional ③ area control method is as follows: refrigerating from the outdoor air state point O to an intersection point N of an isomoisture content line corresponding to the outdoor air state point and an isoenthalpy line corresponding to the air supply state point, and then humidifying to the air supply state point S, wherein the surface cooling section is required to be used for refrigerating and the humidifying section is required to be used for humidifying in the process. The control mode of the ④ area is as follows: after cooling from the outdoor air state point W to the dew point temperature state point L corresponding to the air supply state point S, heating to the air supply state point S is required, and cooling by the surface cooling section and heating by the heating section are required in the above process. In the transition season, when the outdoor air temperature fluctuates back and forth in ③ area and ④ area, the fresh air conditioning unit can switch back and forth between the two modes, and then the phenomenon that the humidifier is frequently started and stopped can occur. The start-stop adjustment of the humidifier requires a certain time and a certain process, the process can seriously affect the stability of the air supply state, and as a result, the temperature and the humidity of the air supply are out of balance, and the purpose of constant temperature and humidity cannot be achieved, so that the production activity is affected.
Disclosure of Invention
The invention aims to provide a fresh air conditioner for a coating workshop.
The invention aims to provide a constant temperature and humidity control method for the fresh air conditioner of the coating workshop.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
According to a first aspect of the embodiment of the invention, a fresh air conditioner for a coating workshop is provided, and the fresh air conditioner comprises an air inlet and an air outlet which are arranged on a machine shell, wherein an air inlet section, a primary heating section, a humidifying section, a surface cooling section, a secondary heating section and an air supply section are sequentially arranged between the air inlet and the air outlet.
Wherein, preferably, a primary filter section is arranged between the air inlet and the primary heating section; and a medium-efficiency filtering section and/or a high-efficiency filtering section are arranged between the heating section and the air supply section.
Wherein preferably a fan section is provided between the secondary heating section and the intermediate filtering section.
Wherein preferably a sound attenuation section is provided between the fan section and the intermediate filter section.
Wherein preferably the primary heating section is a direct fired heating section.
According to a second aspect of the embodiment of the present invention, there is provided a method for controlling constant temperature and humidity of a fresh air conditioner of a paint shop, based on the implementation of the fresh air conditioner of the paint shop, comprising the steps of: in the transition season, when the outdoor air state point is at ③ area, firstly humidifying the fresh air to ④ area, then cooling the fresh air to the dew point temperature state point corresponding to the air supply state point, and finally heating the fresh air to the air supply state point for air supply.
Preferably, the constant temperature and humidity control method for the fresh air conditioner of the painting workshop further comprises the following steps: in the transition season, when the outdoor air state point is at ④ zones, the fresh air is humidified firstly, then the fresh air is cooled to the dew point temperature state point corresponding to the air supply state point, and finally the fresh air is heated to the air supply state point for air supply.
Preferably, when the outdoor air state is at ③ area or ④ area, the fresh air is processed to the air supply state point by using a humidifying section, a surface cooling section and a secondary heating section.
Preferably, the temperature corresponding to the air supply state point is: 23 ℃, relative humidity: 65% RH.
Preferably, the constant temperature and humidity control method for the fresh air conditioner of the painting workshop further comprises the following steps:
In winter, when the outdoor air state point is in ① area and ② area, the primary heating section is used for heating the fresh air to the intersection point of the isomoisture content line corresponding to the outdoor air state point and the isoenthalpy line corresponding to the air supply state point, and then the humidifying section is used for humidifying the fresh air to the air supply state point for air supply;
In summer, when the outdoor air state point is at ④ areas, the surface cooling section is used for refrigerating the fresh air to the dew point temperature state point corresponding to the air supply state point, and then the secondary heating section is used for heating the fresh air to the air supply state point and then supplying air.
The fresh air conditioner for the painting workshop is characterized in that an air inlet section, a primary heating section, a humidifying section, a surface cooling section, a secondary heating section and an air supply section are sequentially arranged between an air inlet and an air outlet. The fresh air conditioner for the painting workshop can humidify fresh air firstly in transitional seasons, humidifies the fresh air to a ④ area, then performs surface cooling, dehumidification and secondary heating, and treats the fresh air to an air supply state for air supply. The outdoor air state is in ③ area or ④ area, the process can be used for processing, so that the operation mode in the transition season is adjusted to be a processing mode, the control mode is not required to be switched, frequent start and stop of the humidifier are avoided, the temperature and humidity imbalance phenomenon in the air supply state in the transition season is avoided, the stability of air supply in the transition season is ensured, and the method is particularly suitable for being used in coating workshops with long duration in the northern transition season.
Drawings
FIG. 1 is a control logic diagram of a fresh air conditioner for a paint shop used in the prior art;
fig. 2 is a schematic structural diagram of a fresh air conditioner for a painting workshop provided by the invention;
FIG. 3 is a control logic diagram of the fresh air conditioner of the painting workshop in a transitional season ③ area;
Fig. 4 is a control logic diagram of the fresh air conditioner of the painting workshop in the transitional season ④.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings and specific embodiments.
In order to avoid switching of control modes when a fresh air conditioner of a painting workshop operates in a ③ region ④ region in a transition season, the invention uniformly adjusts the operation mode of a ④ region in a ③ region in the transition season to be: humidification, refrigeration, dehumidification and heating. In order to realize the operation mode, the invention provides a fresh air conditioner for a painting workshop, which is shown in fig. 2.
As shown in fig. 2, the fresh air conditioner for the painting workshop provided by the invention comprises an air inlet 2 and an air outlet 3 which are arranged on a machine shell 1, and an air inlet section 4, a primary heating section 5, a humidifying section 6, a surface cooling section 7, a secondary heating section 8 and an air supply section 9 are sequentially arranged between the air inlet 2 and the air outlet 3. Wherein, the air inlet section 4 is a section of gap between the air inlet 2 and the functional section in the shell 1, the air supply section 9 is a section of gap between the air outlet 3 and the functional section in the shell 1, and the space size of the air inlet section 4 and the air supply section 9 is adjustable. The primary heating section 5 is usually a direct-fired heating section, and directly heats fresh air in a gas heating mode. The humidifying section 6 is provided with a humidifier, and the fresh air is usually treated by adopting a spray humidifying mode. The surface cooling section 7 uses a coil pipe which is communicated with cooling water to cool and dehumidify fresh air. The secondary heating section 8 adopts a coil pipe with hot water to heat fresh air.
According to the indoor air cleanliness requirement, a primary filter, a medium-efficiency filter section and/or a high-efficiency filter section are/is required to be installed in different fresh air conditioners of coating workshops. A primary filter section 11 is arranged between the air inlet section 4 and the primary heating section 5; a medium-efficiency filter section 12 and/or a high-efficiency filter section are arranged between the heating section 6 and the air supply section 9.
A fan is arranged in the fan section 14, and the fan section 14 is arranged between the secondary heating section 9 and the intermediate-effect filtering section 12. A sound-deadening section 15 for eliminating noise of the fresh air conditioner of the painting shop can also be provided between the fan section 14 and the intermediate-effect filter section 9.
The invention also provides a constant temperature and humidity control method based on the fresh air conditioner of the painting workshop. The fresh air conditioner for the painting workshop can realize three control modes of air treatment in winter, summer and transitional seasons. The winter, summer and transition season can be set in the control system of the fresh air conditioner of the painting workshop according to the time periods of different seasons in the region where the painting workshop is located. And the control modes of winter, summer or transitional seasons are adopted in the corresponding time periods respectively.
The constant temperature and humidity control method for the fresh air conditioner of the painting workshop comprises the following steps: as shown in fig. 3, in the transition season, when the outdoor air state point O is located in the ③ area (including the whole area of the whole ③ area), the fresh air is humidified to the N point of the ④ area, then the fresh air is cooled from the N point to the dew point temperature state point L corresponding to the air supply state point S, and finally the fresh air is heated from the L point to the air supply state point S for air supply. In the process, isenthalpic humidification from the point O to the point N is realized by using the humidification section 6, the cooling and dehumidifying process from the point N to the point L is realized by using the surface cooling section 7, and the isenthalpic heating process from the point L to the point S is realized by using the secondary heating section 8.
Similarly, as shown in fig. 4, in the transition season, when the outdoor air condition point W is located in the ④ region (including the partial region adjacent to the ③ region in the ④ region), the fresh air is humidified (for example, humidified to the N point), then the fresh air is cooled from the N point to the dew point temperature condition point L corresponding to the air supply condition point S, and finally the fresh air is heated to the air supply condition point S and then supplied. In the process, isenthalpic humidification from the point W to the point N is realized by using the humidification section 6, the cooling and dehumidifying process from the point N to the point L is realized by using the surface cooling section 7, and the isenthalpic heating process from the point L to the point S is realized by using the secondary heating section 8.
In order to enable the fresh air conditioner of the painting workshop to adopt the same operation mode in a ④ region of the transitional season ③. When the outdoor air state point O is positioned in the ③ area, fresh air needs to be humidified to the N point of the ④ area, and the humidifying process only needs to ensure that the humidified fresh air state point enters the ④ area, so that no requirement is given to the specific point entering the ④ area. In order to use the same control mode when the outdoor air is in the ③ area ④ area in the transitional season, the fresh air is humidified first when the outdoor air state point W is in the ④ area, and the humidifying process and the end point do not need to be controlled accurately. In both cases, after the fresh air is humidified, the surface cooling section 7 is used for cooling and dehumidifying, the secondary heating section 8 is used for heating, and the fresh air is processed to the air supply state point S. Therefore, the air treatment modes of the outdoor air state in ③ area and ④ area in transition season are unified, and the control mode is not required to be switched, so that the air treatment process is more stable, and the stability of air supply is ensured.
The parameters corresponding to the air state points used in fig. 3 and 4 are shown in table 1.
TABLE 1 the meanings of the status points on the psychrometric chart of FIGS. 3 and 4
In the control method aiming at the transition season, the humidification is carried out before the surface cooling dehumidification and the heating treatment, in theory, some consumption exists in terms of electric energy consumption, but the actual use effect is that the frequent start and stop of the humidifier in the fresh air conditioner of the coating workshop in the transition season can be completely avoided due to the control mode of the ③ area and the ④ area in the transition season, so that the economic loss is far greater than the economic cost of electric energy, and the control method is a positive and beneficial control mode.
In winter and summer, the fresh air conditioner of the painting workshop is controlled by using a traditional control method. Specifically, as shown in fig. 1, in winter, when the outdoor air state point Q is located in the ① area and the ② area, the primary heating section 5 is used to heat the fresh air to the intersection point Q1 of the isomoisture content line corresponding to the outdoor air state point and the isenthalpic line corresponding to the air supply state point, and then the humidifying section 6 is used to humidify the fresh air to the air supply state point S for air supply; in summer, when the outdoor air state point W is located in ④ region (whole ④ region), the fresh air is cooled to the dew point temperature state point L corresponding to the air supply state point by using the surface cooling section 7, and then the fresh air is heated to the air supply state point S by using the secondary heating section 8, and then the air is supplied.
In summary, the fresh air conditioner for the painting workshop provided by the invention is provided with the air inlet section, the primary heating section, the humidifying section, the surface cooling section, the secondary heating section and the air supply section in sequence between the air inlet and the air outlet. Compared with a traditional fresh air conditioner for a coating workshop, the surface cooling section and the humidifying section are interchanged in position, so that the functional section of the air conditioner is arranged and designed to be humidified before surface cooling. This allows the ③ and ④ regions of the transition season to be combined into one control scheme. The fresh air conditioner for the painting workshop can humidify fresh air firstly in transitional seasons, humidifies the fresh air to a ④ area, then performs surface cooling, dehumidification and secondary heating, and treats the fresh air to an air supply state for air supply. The outdoor air state is in ③ area or ④ area, the process can be used for processing, so that the operation mode in the transition season is adjusted to be a processing mode, the control mode is not required to be switched, frequent start and stop of the humidifier are avoided, the temperature and humidity imbalance phenomenon in the air supply state in the transition season is avoided, the air supply stability in the transition season is ensured, and the method is particularly suitable for being used in coating workshops with long duration in the northern transition season.
The fresh air conditioner for the painting workshop and the constant temperature and humidity control method provided by the invention are described in detail. Any obvious modifications to the present invention, as would be apparent to those skilled in the art, would constitute an infringement of the patent rights of the invention and would take on corresponding legal liabilities without departing from the true spirit of the invention.
Claims (9)
1. A constant temperature and humidity control method for a fresh air conditioner of a coating workshop comprises the following steps:
in the transition season, when the outdoor air state point is at the ③ area, firstly humidifying the fresh air to the ④ area, then refrigerating the fresh air to the dew point temperature state point corresponding to the air supply state point, and finally heating the fresh air to the air supply state point for air supply;
in the transition season, when the outdoor air state point is at ④ zones, firstly humidifying the fresh air, then refrigerating the fresh air to the dew point temperature state point corresponding to the air supply state point, and finally heating the fresh air to the air supply state point for air supply;
The ③ area is an area formed by the left side of a moisture content line such as an over-air supply state point and the right upper side of the over-air supply state point in the enthalpy-humidity diagram; the ④ area is the area on the right side of the moisture content line such as the over-air supply state point in the enthalpy-humidity diagram.
2. The method for controlling the constant temperature and humidity of the fresh air conditioner of the painting workshop according to claim 1, wherein the method comprises the following steps: when the outdoor air state is in ③ area or ④ area, the humidifying section, the surface cooling section and the secondary heating section are used for processing the fresh air to the air supply state point.
3. The method for controlling the constant temperature and humidity of the fresh air conditioner of the painting workshop according to claim 1, wherein the method comprises the following steps:
The temperature corresponding to the air supply state point is as follows: 23 ℃, relative humidity: 65% RH.
4. The method for controlling the constant temperature and humidity of the fresh air conditioner of the painting workshop according to claim 1, wherein the method comprises the following steps: the method also comprises the following steps:
In winter, when the outdoor air state point is in ① area and ② area, the primary heating section is used for heating the fresh air to the intersection point of the isomoisture content line corresponding to the outdoor air state point and the isoenthalpy line corresponding to the air supply state point, and then the humidifying section is used for humidifying the fresh air to the air supply state point for air supply;
in summer, when the outdoor air state point is at ④ areas, the surface cooling section is used for refrigerating the fresh air to the dew point temperature state point corresponding to the air supply state point, and then the secondary heating section is used for heating the fresh air to the air supply state point and then supplying air;
The ① area is an area formed by the lower side of an isothermal line of an over-air supply state point and the left side of a moisture content line such as the over-air supply state point in the enthalpy-humidity diagram; and the ② area is an area formed by the upper side of the isothermal line of the over-air supply state point and the lower left side of the isenthalpic line of the over-air supply state point in the enthalpy-humidity diagram.
5. A fresh air conditioner for a painting workshop, for realizing the constant temperature and humidity control method of the fresh air conditioner for the painting workshop according to any one of claims 1 to 4, characterized in that: an air inlet section, a primary heating section, a humidifying section, a surface cooling section, a secondary heating section and an air supply section are sequentially arranged between the air inlet and the air outlet.
6. The paint shop fresh air conditioner of claim 5, wherein:
A primary filter section is arranged between the air inlet and the primary heating section; and a medium-efficiency filtering section and/or a high-efficiency filtering section are arranged between the heating section and the air supply section.
7. The paint shop fresh air conditioner of claim 6, wherein:
a fan section is arranged between the secondary heating section and the medium-efficiency filtering section.
8. The paint shop fresh air conditioner of claim 7, wherein:
and a silencing section is arranged between the fan section and the middle-effect filtering section.
9. The paint shop fresh air conditioner of claim 5, wherein:
the primary heating section is a direct-fired heating section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911376480.0A CN110986195B (en) | 2019-12-27 | 2019-12-27 | Fresh air conditioner for coating workshop and constant temperature and humidity control method thereof |
Applications Claiming Priority (1)
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| CN111895585A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN111895587A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN112097375B (en) * | 2020-09-29 | 2022-01-14 | 上汽通用五菱汽车股份有限公司 | Energy-saving control method and control system of air conditioner |
| CN112228997A (en) * | 2020-11-17 | 2021-01-15 | 珠海格力电器股份有限公司 | Fresh air device and control method thereof |
| CN114413351B (en) * | 2021-12-24 | 2023-11-07 | 北京环都拓普空调有限公司 | Dehumidification reheat conditioning equipment and air conditioning system |
| CN114992722A (en) * | 2022-04-27 | 2022-09-02 | 东风柳州汽车有限公司 | Air supply system and method |
| CN115370545B (en) * | 2022-10-21 | 2023-01-24 | 北京环都拓普空调有限公司 | Ventilation, dehumidification and heat dissipation all-in-one machine for wind power generation equipment and air volume adjusting method |
| CN115751494A (en) * | 2022-11-11 | 2023-03-07 | 北京格林博瑞科技有限公司 | Constant temperature and humidity unit |
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