CN110953652A - Inter-row air conditioner indoor unit with return air selection function and control method thereof - Google Patents
Inter-row air conditioner indoor unit with return air selection function and control method thereof Download PDFInfo
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- CN110953652A CN110953652A CN201911310005.3A CN201911310005A CN110953652A CN 110953652 A CN110953652 A CN 110953652A CN 201911310005 A CN201911310005 A CN 201911310005A CN 110953652 A CN110953652 A CN 110953652A
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- air
- return
- indoor unit
- outdoor fresh
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
- F24F1/0038—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room in combination with simultaneous exhaustion of inside air
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F13/28—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
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
Abstract
The invention discloses an inter-row air-conditioning indoor unit with return air selection and a control method thereof, belonging to the technical field of natural cold source utilization.
Description
Technical Field
The invention relates to the technical field of natural cold source utilization, in particular to an inter-row air conditioner indoor unit with return air selection and a control method thereof.
Background
In a micro-module data center machine room, row-to-row (also called row-to-row) air conditioner indoor units and a network cabinet are distributed and arranged in parallel to form a micro-module with relatively isolated cold/hot channels, and the micro-module is commonly used in small and medium-sized data centers. The air conditioner indoor unit between the columns of the micro-modules can only select hot channel air as return air, and can not fully utilize a cold source of outdoor fresh air.
Based on the above, the invention designs the inter-row air conditioner indoor unit with the return air selection and the control method thereof, so as to solve the above mentioned problems.
Disclosure of Invention
The invention designs an inter-row air-conditioning indoor unit with return air selection and a control method thereof, which controls and regulates the inter-row air-conditioning indoor unit, a hot channel air return valve and an outdoor fresh air supply valve by acquiring the temperature and the air enthalpy of an outdoor air channel, a hot channel and a cold channel and according to the comparison of the temperature and the enthalpy, fully utilizes an outdoor fresh air cold source, reduces the refrigeration load of an air-conditioning refrigerator and achieves the aim of saving energy.
The invention provides a row-to-row air-conditioning indoor unit with return air selection, which comprises a row-to-row air-conditioning indoor unit with return air selection, a hot channel air return valve and an outdoor fresh air supply valve, wherein the row-to-row air-conditioning indoor unit with return air selection is composed of a row-to-row air-conditioning indoor unit, a hot channel air return valve and an outdoor fresh air supply valve;
the air cavity is formed by a top sealing plate, side sealing plates, an outdoor fresh air supply filter screen, a hot channel return air filter screen and an inter-row air conditioner indoor unit;
outdoor fresh air enters the air cavity through the outdoor fresh air supply valve and the outdoor fresh air filter screen, hot channel air enters the air cavity through the hot channel air return valve and the hot channel air return filter screen, and air in the air cavity is sent into the cold channel through the indoor unit of the inter-row air conditioner.
The invention provides a control method of an indoor unit of a row-room air conditioner with return air selection, which comprises the following steps: the indoor machine, the hot channel air return valve and the outdoor fresh air supply valve are controlled and adjusted according to the comparison of the temperature and the enthalpy value by collecting the temperature and the enthalpy value of the outdoor air, the hot channel air and the cold channel.
Preferably, when the outdoor fresh air enthalpy is greater than the hot channel air enthalpy, the inter-row air conditioner indoor unit performs refrigeration and ventilation operation, the outdoor fresh air supply valve is closed, the hot channel air return valve maintains the maximum opening degree, and hot channel air is selected as return air of the inter-row air conditioner indoor unit.
Preferably, when the outdoor fresh air enthalpy is smaller than the hot channel air enthalpy but larger than the cold channel air enthalpy and the outdoor fresh air temperature is not higher than the hot channel temperature, the inter-row air-conditioning indoor unit performs refrigeration and ventilation operation, the outdoor fresh air supply valve maintains the maximum opening degree, the hot channel air return valve is closed, and all the outdoor fresh air is selected as return air of the inter-row air-conditioning indoor unit.
Preferably, when the outdoor fresh air enthalpy is not greater than the cold channel air enthalpy and the outdoor fresh air temperature is not higher than the cold channel temperature, the inter-row air-conditioning indoor unit stops refrigerating, the inter-row air-conditioning indoor unit performs ventilation operation, the cold channel air temperature is measured and compared with a set value of the cold channel temperature, and the openings of the outdoor fresh air supply valve and the hot channel air return valve are adjusted through proportional-integral operation to maintain the cold channel temperature constant.
Compared with the prior art, the invention has the beneficial effects that: the inter-row air conditioner indoor unit with the return air selection and the control method thereof control and regulate the inter-row air conditioner indoor unit, the hot channel air return valve and the outdoor fresh air supply valve by collecting the temperature and the air enthalpy values of the outdoor air, the hot channel and the cold channel according to the comparison of the temperature and the enthalpy values, fully utilize an outdoor fresh air cold source, reduce the refrigeration load of an air conditioner refrigerator and achieve the purpose of energy conservation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side sectional view of an indoor unit of a row-to-row air conditioner with return air selection according to the present invention;
FIG. 2 is a sectional view of the indoor unit of the row air conditioner with back air selection in the invention A-A;
FIG. 3 is a schematic view of the air return and supply of the indoor unit of the inter-row air conditioner with the air return selection according to the present invention;
FIG. 4 is a schematic plan view of the indoor unit of the row-to-row air conditioner with return air selection according to the present invention;
fig. 5 is a schematic cross-sectional view of a B-B section of an indoor unit of a row-room air conditioner with return air selection according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. indoor units of air conditioners between rows; 2. a hot aisle air return valve; 3. an outdoor fresh air supply valve; 4. a top sealing plate; 5. a side sealing plate; 6. an outdoor fresh air filter screen; 7. a hot channel return air filter screen; 8. a wind cavity; 9. a raised network floor; 10. a floor of a building; 11. an outdoor fresh air supply channel; 12. a fan house; 13. a blind window; 14. filtering with a screen; 15. a fresh air valve; 16. a fresh air duct; 17. an exhaust valve; 18. an exhaust duct; 19. a network cabinet; 20. a cold tunnel top cover; 21 a cold channel; 22. a micromodule base support; 23. a micromodule; 24. a hot aisle; 25. a machine room wall body; 26. a microporous suspended ceiling of a data center machine room; 27. a roof slab; 28. an air exhaust channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the inter-row air-conditioning indoor unit with return air selection and the application example thereof include an inter-row air-conditioning indoor unit with return air selection, which is composed of an inter-row air-conditioning indoor unit 1, a hot channel air return valve 2 and an outdoor fresh air supply valve 3.
The control method of the inter-row air conditioner indoor unit with return air selection comprises the following steps:
collecting the temperature and the air enthalpy value of the outdoor, the hot channel and the cold channel, and comparing the temperature and the enthalpy value;
when the outdoor fresh air enthalpy is greater than the air enthalpy of the hot channel 24, closing the outdoor fresh air supply valve 3, keeping the opening of the hot channel air return valve 2 to be maximum, and completely selecting hot channel air as return air of the indoor unit 1 of the inter-row air conditioner;
when the outdoor fresh air enthalpy is smaller than the air enthalpy of the hot channel 24 but larger than the air enthalpy of the cold channel 21 and the outdoor fresh air temperature is not higher than the temperature of the hot channel 26, the hot channel air return valve 2 is closed, the opening of the outdoor fresh air supply valve 3 is kept to be maximum, and outdoor fresh air is selected as return air of the indoor unit 1 of the inter-row air conditioner;
when the outdoor fresh air enthalpy is not more than the air enthalpy of the cold channel 21 and the outdoor fresh air temperature is not more than the temperature of the cold channel 21, the inter-row air-conditioning indoor unit 1 stops refrigerating, the inter-row air-conditioning indoor unit 1 performs ventilation operation, the temperature of the cold channel 21 is measured and compared with the set value of the temperature of the cold channel 21, the opening degrees of the outdoor fresh air supply valve 3 and the hot channel air return valve 2 are adjusted through proportional integral operation, and the temperature of the cold channel 21 is kept constant.
Referring to fig. 1 and 2, an air cavity 8 formed by a hot channel return air filter 7, an outdoor fresh air supply filter 6, a top sealing plate 4, a side sealing plate 5 and an indoor unit 1 of the inter-row air conditioner is used for selecting and adjusting return air through opening/closing control and opening adjustment of an outdoor fresh air supply valve 3 and a hot channel air return valve 2.
In fig. 3, outdoor fresh air enters the air cavity 8 through an outdoor fresh air supply channel 11 between the raised network floor 9 and the building floor 10, an outdoor fresh air supply valve 3 and an outdoor fresh air supply filter screen 6. The hot channel 24 air enters the air cavity 8 through the hot channel air return valve 2 and the hot channel return air filter screen 7. The air in the air cavity is sent to the cold channel 21 through the indoor unit 1 of the air conditioner in the row room.
In fig. 4 and 5, outdoor fresh air enters an outdoor fresh air supply channel 11 between the overhead network floor 9 and the floor 10 through a shutter 13 of a fan room 12, a filter screen 14, a fresh air valve 15 and a fresh air pipe 16. When the air in the hot channel 24 is exhausted, the air enters an exhaust channel 28 formed by the micropore suspended ceiling 26 of the data center machine room and a roof plate 27 through the micropore suspended ceiling 26 of the data center machine room, and is exhausted outdoors through an exhaust pipe 18, an exhaust valve 17 and a shutter 13 which are positioned above the suspended ceiling. The cold aisle 21 provides heat exchange with the IT equipment in the network cabinet 19 and enters the hot aisle 24.
When the outdoor fresh air enthalpy is greater than the air enthalpy of the hot channel 24, the inter-row air-conditioning indoor unit 1 performs refrigeration and ventilation, the fresh air valve 15 is closed, the exhaust valve 17 is closed, the outdoor fresh air supply valve 3 is closed, the hot channel air return valve 2 maintains the maximum opening degree, and the air of the hot channel 24 is selected as the return air of the inter-row air-conditioning indoor unit 1;
when the outdoor fresh air enthalpy is smaller than the air enthalpy of the hot channel 24 but larger than the air enthalpy of the cold channel 21 and the outdoor fresh air temperature is not higher than the temperature of the hot channel 24, the row-room air-conditioning indoor unit 1 performs refrigeration and ventilation, a fresh air valve 15 is opened, an exhaust valve 17 is opened, outdoor fresh air enters the outdoor fresh air supply channel 11 between the overhead network floor 9 and the floor 10 through a shutter 13, a filter screen 14, the fresh air valve 15 and a fresh air pipe 16 of the fan room 12, the outdoor fresh air supply valve 3 maintains the maximum opening, the hot channel air return valve 2 is closed, outdoor fresh air is completely selected as return air of the row-room air-conditioning indoor unit 1, air of the hot channel 24 enters an exhaust channel 28 formed by a data center machine room microporous ceiling 26 and a floor plate 27 through the data center machine room microporous ceiling 26, and is exhausted outdoors through the exhaust pipe 18, the exhaust valve 17 and the shutter 13 positioned;
when the outdoor fresh air enthalpy is not more than the air enthalpy of the cold channel 21 and the outdoor fresh air temperature is not more than the temperature of the cold channel 21, the refrigeration of the indoor unit 1 of the train air conditioner is stopped, the ventilation operation of the indoor unit 1 of the train air conditioner is started, the fresh air valve 15 is opened, the exhaust valve 17 is opened, the outdoor fresh air enters the outdoor fresh air supply channel 11 between the overhead network floor 9 and the floor 10 through the shutter 13, the filter screen 14, the fresh air valve 15 and the fresh air pipe 16 of the fan room 12, the temperature of the cold channel 21 is measured and compared with the temperature set value of the cold channel 21, the opening degrees of the outdoor fresh air supply valve 3 and the hot channel air return valve 2 are adjusted through proportional integral operation, the temperature of the cold channel 21 is kept constant, part of the air of the hot channel 24 enters the exhaust channel 28 formed by the micropore furred ceiling 26 of the data center machine room and the roof 27 through the micropore, The air exhaust valve 17 and the louver 13 are exhausted to the outside.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a take interior machine of air conditioning of row room of return air selection which characterized in that: the air conditioner indoor unit with the air return selection function consists of an inter-row air conditioner indoor unit, a hot channel air return valve and an outdoor fresh air supply valve;
the air cavity is formed by a top sealing plate, side sealing plates, an outdoor fresh air supply filter screen, a hot channel return air filter screen and an inter-row air conditioner indoor unit;
outdoor fresh air enters the air cavity through the outdoor fresh air supply valve and the outdoor fresh air filter screen, hot channel air enters the air cavity through the hot channel air return valve and the hot channel air return filter screen, and air in the air cavity is sent into the cold channel through the indoor unit of the inter-row air conditioner.
2. The utility model provides a take return air control method of interior machine of air conditioning of row of return air selection which characterized in that: the return air control method comprises the steps of collecting the temperatures and the air enthalpy values of the outdoor air conditioner, the hot channel air return valve and the cold channel, and controlling and adjusting the indoor unit of the inter-row air conditioner, the hot channel air return valve and the outdoor fresh air supply valve according to the comparison of the temperatures and the enthalpy values.
3. The return air control method of the inter-row air conditioning indoor unit with return air selection according to claim 2, characterized in that: when the outdoor fresh air enthalpy is larger than the hot channel air enthalpy, the indoor unit of the air conditioner between the columns performs refrigeration and ventilation operation, the outdoor fresh air supply valve is closed, the hot channel air return valve maintains the maximum opening, and hot channel air is selected as return air of the indoor unit of the air conditioner between the columns.
4. The return air control method of the inter-row air conditioning indoor unit with return air selection according to claim 2, characterized in that: when the outdoor fresh air enthalpy is smaller than the hot channel air enthalpy but larger than the cold channel air enthalpy and the outdoor fresh air temperature is not higher than the hot channel air temperature, the inter-row air-conditioning indoor unit performs refrigeration and ventilation operation, the outdoor fresh air supply valve maintains the maximum opening degree, the hot channel air return valve is closed, and outdoor fresh air is selected as return air of the inter-row air-conditioning indoor unit.
5. The return air control method of the inter-row air conditioning indoor unit with return air selection according to claim 2, characterized in that: when the outdoor fresh air enthalpy is not greater than the cold channel air enthalpy and the outdoor fresh air temperature is not higher than the cold channel temperature, the indoor unit of the air conditioner between the rows stops refrigerating, the indoor unit of the air conditioner between the rows performs ventilation operation, the cold channel temperature is measured and compared with a set value of the cold channel temperature, and the opening degrees of the outdoor fresh air supply valve and the hot channel air return valve are adjusted through proportional-integral operation to maintain the cold channel temperature to be constant.
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| CN201911310005.3A CN110953652A (en) | 2019-12-18 | 2019-12-18 | Inter-row air conditioner indoor unit with return air selection function and control method thereof |
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| CN201911310005.3A CN110953652A (en) | 2019-12-18 | 2019-12-18 | Inter-row air conditioner indoor unit with return air selection function and control method thereof |
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