CN112032863A - High-precision constant-temperature and constant-humidity system - Google Patents
High-precision constant-temperature and constant-humidity system Download PDFInfo
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- CN112032863A CN112032863A CN202010945487.6A CN202010945487A CN112032863A CN 112032863 A CN112032863 A CN 112032863A CN 202010945487 A CN202010945487 A CN 202010945487A CN 112032863 A CN112032863 A CN 112032863A
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- humidity
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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
- F24F3/0442—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature
- F24F3/0444—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature in which two airstreams are conducted from the central station via independent conduits to the space to be treated, of which one has a constant volume and a season-adapted temperature, while the other one is always cold and varies in volume
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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
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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
- F24F11/70—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
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
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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
- F24F3/12—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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- 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)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a high-precision constant-temperature and constant-humidity system which comprises a fresh air unit, a temperature control unit and a humidity control unit, wherein the fresh air unit is used for refrigerating or heating fresh air so as to reach an indoor temperature point and a humidity point; the pre-conditioning unit is connected with the fresh air unit through a first pipeline and is used for cooling and dehumidifying air; the primary temperature and humidity regulating unit is connected with the pre-regulating unit through a second pipeline and used for carrying out primary regulation on air; the secondary temperature and humidity regulating unit is connected with the primary temperature and humidity regulating unit through a third pipeline, and is used for secondarily regulating air and then sending the air into a constant temperature and humidity room; the two ends of the primary air return pipeline are respectively communicated with the constant temperature and humidity room and the first pipeline; the invention adds the secondary heating and the secondary humidifying to realize the high-precision constant temperature and humidity control without abnormal fluctuation.
Description
Technical Field
The invention relates to the field of constant temperature and humidity systems, in particular to a high-precision constant temperature and humidity system.
Background
The conventional functions of the conventional constant-temperature constant-humidity air conditioning unit are as follows: a mixing, filtering, refrigerating, heating, humidifying and air supplying section; the conventional constant-temperature and constant-humidity air conditioner only adjusts the air supply state point by one-time heating and humidification, because the electric heating is started and stopped to have preheating time and cooling time, when the indoor temperature and humidity reach the set temperature, the heating can be stopped, when the indoor temperature and humidity are restarted, the electric heating has temperature rise time, and during the period, certain influence is generated on the temperature precision; the same humidifier has operations such as water supply and shutdown during humidification, and when these operations are performed, the stability of humidity is affected to some extent.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a high-precision constant-temperature and constant-humidity system which has a high-precision adjusting constant-temperature and constant-humidity function.
The technical scheme adopted by the embodiment of the invention for solving the technical problem is as follows: a high-precision constant temperature and humidity system comprises:
the fresh air unit is used for refrigerating or heating fresh air to reach an indoor temperature point and a humidity point;
the pre-conditioning unit is connected with the fresh air unit through a first pipeline and is used for cooling and dehumidifying air;
the primary temperature and humidity regulating unit is connected with the pre-regulating unit through a second pipeline and used for carrying out primary regulation on air;
the secondary temperature and humidity regulating unit is connected with the primary temperature and humidity regulating unit through a third pipeline, and is used for secondarily regulating air and then sending the air into a constant temperature and humidity room;
the two ends of the primary air return pipeline are respectively communicated with the constant temperature and humidity room and the first pipeline;
and two ends of the secondary air return pipeline are respectively communicated with the constant temperature and humidity room and the third pipeline.
Further, the pre-conditioner set includes a refrigeration coil and a fan.
Further, the primary temperature and humidity regulating unit comprises a primary electric heater and a primary electric humidifier.
Further, the secondary temperature and humidity adjusting unit comprises a secondary electric heater and a secondary electric humidifier.
Further, the high-precision constant temperature and humidity system further comprises:
a controller;
the first regulator is electrically connected with the controller and the primary temperature and humidity regulating unit respectively;
and the second regulator is electrically connected with the controller and the secondary temperature and humidity regulating unit respectively.
Further, the following settings are performed in the controller:
and controlling one or two of the primary electric heater and the primary electric humidifier to be simultaneously started, and controlling one or two of the secondary electric heater and the secondary electric humidifier to be simultaneously started.
The invention has the beneficial effects that: a high-precision constant-temperature and constant-humidity system comprises a fresh air unit, a temperature control unit and a humidity control unit, wherein the fresh air unit is used for refrigerating or heating fresh air to reach an indoor temperature point and a humidity point; the pre-conditioning unit is connected with the fresh air unit through a first pipeline and is used for cooling and dehumidifying air; the primary temperature and humidity regulating unit is connected with the pre-regulating unit through a second pipeline and used for carrying out primary regulation on air; the secondary temperature and humidity regulating unit is connected with the primary temperature and humidity regulating unit through a third pipeline, and is used for secondarily regulating air and then sending the air into a constant temperature and humidity room; the two ends of the primary air return pipeline are respectively communicated with the constant temperature and humidity room and the first pipeline; the invention adds the secondary heating and the secondary humidifying to realize the high-precision constant temperature and humidity control without abnormal fluctuation.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a high-precision constant temperature and humidity system.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Referring to fig. 1, a high-precision constant temperature and humidity system includes:
the fresh air unit is used for refrigerating or heating fresh air to reach an indoor temperature point and a humidity point;
the pre-conditioning unit is connected with the fresh air unit through a first pipeline and is used for cooling and dehumidifying air;
the primary temperature and humidity regulating unit is connected with the pre-regulating unit through a second pipeline and used for carrying out primary regulation on air;
the secondary temperature and humidity regulating unit is connected with the primary temperature and humidity regulating unit through a third pipeline, and is used for secondarily regulating air and then sending the air into a constant temperature and humidity room;
the two ends of the primary air return pipeline are respectively communicated with the constant temperature and humidity room and the first pipeline;
and two ends of the secondary air return pipeline are respectively communicated with the constant temperature and humidity room and the third pipeline.
The working principle of the invention is as follows:
1. firstly, outdoor fresh air enters a fresh air unit for processing, is refrigerated in summer and heated in winter, is processed to an indoor temperature point, is adjusted to be roughly adjusted, and is mixed with primary return air conveyed back by a constant temperature and humidity room through a primary return air pipeline;
2. the primary mixed air is cooled and dehumidified by a refrigerating coil in a pre-conditioning unit, the primary mixed air is processed to a machine dew point A, and is subjected to primary heating, humidifying and fine-tuning after passing through a fan (the air has temperature rise), and the air condition A is processed to a state point B lower than an air supply temperature and humidity point;
3. in order to achieve a high-precision control effect, after the first heating and humidifying treatment is carried out to the state point B, the air quantity required by meeting the heat load is smaller than the air quantity meeting the precision, so that in order to save operation energy consumption, secondary return air conveyed back from the constant-temperature and constant-humidity room is introduced and mixed to reach an air state point C, and the air state point S is subjected to secondary heating and humidifying fine adjustment according to indoor feedback temperature and humidity signals and then is sent to constant-temperature and constant-release.
The problem that the temperature and humidity precision control is affected when the humidifier is started or stopped or water is supplemented or self-cleaned in the operation process is solved by the increased secondary heating and secondary humidification, so that the high-precision constant-temperature and constant-humidity control without abnormal fluctuation can be realized by increasing the secondary heating and the secondary humidification.
The pre-conditioning unit includes a refrigeration coil and a fan.
The primary temperature and humidity regulating unit comprises a primary electric heater and a primary electric humidifier.
The secondary temperature and humidity regulating unit comprises a secondary electric heater and a secondary electric humidifier.
The high-precision constant temperature and humidity system further comprises:
a controller; specifically, the controller is set to be a PLC;
the first regulator is electrically connected with the controller and the primary temperature and humidity regulating unit respectively;
the second regulator is electrically connected with the controller and the secondary temperature and humidity regulating unit respectively; the first regulator and the second regulator are configured as thyristor regulators.
Further, the following settings are performed in the controller:
controlling one or two of the primary electric heater and the primary electric humidifier to be simultaneously started, and controlling one or two of the secondary electric heater and the secondary electric humidifier to be simultaneously started; specifically, there are several schemes that may be executed alternately according to data fed back by the temperature and humidity sensor, including: controlling the primary electric heater, the primary electric humidifier, the secondary electric heater and the secondary electric humidifier to be started simultaneously; or controlling the primary electric heater, the primary electric humidifier and the secondary electric heater to be simultaneously started; or controlling the primary electric heater, the secondary electric heater and the secondary electric humidifier to be simultaneously started; or controlling the primary electric humidifier, the secondary electric heater and the secondary electric humidifier to be simultaneously started; or controlling the primary electric heater and the secondary electric humidifier to be simultaneously started; or controlling the primary electric humidifier and the secondary electric heater to be simultaneously started; that is, at least one group of electric heater and one group of electric humidifier are required to work, and a node of out-of-control temperature and humidity control is ensured.
Furthermore, a temperature sensor and a humidity sensor which are electrically connected with the controller are arranged in each node and the constant temperature and humidity room, so that the temperature and the humidity of each node or the constant temperature and humidity room can be fed back in real time.
As a first embodiment of the present invention, parameters of each node are as follows: the total air volume is 4000CMH, the fresh air volume is 600CMH, the fresh air precooling power is 8KW, the fresh air preheating power is 6KW, the primary return air volume is 2000CMH, the power of the refrigeration coil is 15KW, the primary heating power is 6KW, the primary humidification volume is 3kg/h, the secondary return air volume is 1400CMH, the secondary heating power is 8KW, the secondary humidification volume is 4kg/h, and the external air supply static pressure is 200 pa;
as a second embodiment of the present invention, the parameters of each node are as follows: the total air volume is 6000CMH, the fresh air volume is 800CMH, the fresh air precooling power is 12KW, the fresh air preheating power is 8KW, the primary return air volume is 3000CMH, the power of the refrigeration coil is 20KW, the primary heating power is 8KW, the primary humidification volume is 4kg/h, the secondary return air volume is 2200CMH, the secondary heating power is 12KW, the secondary humidification volume is 5kg/h, and the static pressure of the air supply outside the machine is 250 pa.
The two embodiments described above represent two system parameters when the present invention is applied in different practical applications according to the user's needs.
It is to be understood that the present invention is not limited to the above-described embodiments, and that equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and that such equivalent modifications and substitutions are to be included within the scope of the appended claims.
Claims (6)
1. The utility model provides a high accuracy constant temperature and humidity system which characterized in that includes:
the fresh air unit is used for refrigerating or heating fresh air to reach an indoor temperature point and a humidity point;
the pre-conditioning unit is connected with the fresh air unit through a first pipeline and is used for cooling and dehumidifying air;
the primary temperature and humidity regulating unit is connected with the pre-regulating unit through a second pipeline and used for carrying out primary regulation on air;
the secondary temperature and humidity regulating unit is connected with the primary temperature and humidity regulating unit through a third pipeline, and is used for secondarily regulating air and then sending the air into a constant temperature and humidity room;
the two ends of the primary air return pipeline are respectively communicated with the constant temperature and humidity room and the first pipeline;
and two ends of the secondary air return pipeline are respectively communicated with the constant temperature and humidity room and the third pipeline.
2. The high-precision constant temperature and humidity system as claimed in claim 1, wherein: the pre-conditioning unit includes a refrigeration coil and a fan.
3. The high-precision constant temperature and humidity system as claimed in claim 1, wherein: the primary temperature and humidity regulating unit comprises a primary electric heater and a primary electric humidifier.
4. The high-precision constant temperature and humidity system as claimed in claim 1, wherein: the secondary temperature and humidity regulating unit comprises a secondary electric heater and a secondary electric humidifier.
5. The high-precision constant temperature and humidity system according to claim 1, further comprising:
a controller;
the first regulator is electrically connected with the controller and the primary temperature and humidity regulating unit respectively;
and the second regulator is electrically connected with the controller and the secondary temperature and humidity regulating unit respectively.
6. A high accuracy constant temperature and humidity system according to claim 5, characterized in that the following settings are executed in the controller:
and controlling one or two of the primary electric heater and the primary electric humidifier to be simultaneously started, and controlling one or two of the secondary electric heater and the secondary electric humidifier to be simultaneously started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945487.6A CN112032863A (en) | 2020-09-10 | 2020-09-10 | High-precision constant-temperature and constant-humidity system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945487.6A CN112032863A (en) | 2020-09-10 | 2020-09-10 | High-precision constant-temperature and constant-humidity system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112032863A true CN112032863A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010945487.6A Pending CN112032863A (en) | 2020-09-10 | 2020-09-10 | High-precision constant-temperature and constant-humidity system |
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| CN (1) | CN112032863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115900012A (en) * | 2022-12-15 | 2023-04-04 | 广东省建筑设计研究院有限公司 | Multistage air treatment method and equipment for realizing ultrahigh-precision control |
Citations (6)
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|---|---|---|---|---|
| CN2859313Y (en) * | 2005-11-02 | 2007-01-17 | 雅士空调(广州)有限公司 | Secondary return air type constant temperature and humidity purifying set |
| CN101107481A (en) * | 2004-12-20 | 2008-01-16 | 润风株式会社 | Air conditioning system |
| CN201652635U (en) * | 2010-04-29 | 2010-11-24 | 茂名学院 | Novel constant temperature and humidity purification air-conditioning unit |
| DE102013100330A1 (en) * | 2013-01-14 | 2014-07-17 | Robert Bosch Gmbh | Multichannel air conditioning |
| CN206018860U (en) * | 2016-06-13 | 2017-03-15 | 上海数据港股份有限公司 | A kind of improved multifunctional central air-conditioning cabinet |
| CN208042371U (en) * | 2018-04-04 | 2018-11-02 | 航天凯天环保科技股份有限公司 | A kind of combined type secondary returning air control humid air purification unit |
-
2020
- 2020-09-10 CN CN202010945487.6A patent/CN112032863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107481A (en) * | 2004-12-20 | 2008-01-16 | 润风株式会社 | Air conditioning system |
| CN2859313Y (en) * | 2005-11-02 | 2007-01-17 | 雅士空调(广州)有限公司 | Secondary return air type constant temperature and humidity purifying set |
| CN201652635U (en) * | 2010-04-29 | 2010-11-24 | 茂名学院 | Novel constant temperature and humidity purification air-conditioning unit |
| DE102013100330A1 (en) * | 2013-01-14 | 2014-07-17 | Robert Bosch Gmbh | Multichannel air conditioning |
| CN206018860U (en) * | 2016-06-13 | 2017-03-15 | 上海数据港股份有限公司 | A kind of improved multifunctional central air-conditioning cabinet |
| CN208042371U (en) * | 2018-04-04 | 2018-11-02 | 航天凯天环保科技股份有限公司 | A kind of combined type secondary returning air control humid air purification unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115900012A (en) * | 2022-12-15 | 2023-04-04 | 广东省建筑设计研究院有限公司 | Multistage air treatment method and equipment for realizing ultrahigh-precision control |
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