CN113899025A - Heat recovery air treatment system - Google Patents
Heat recovery air treatment system Download PDFInfo
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- CN113899025A CN113899025A CN202111130940.9A CN202111130940A CN113899025A CN 113899025 A CN113899025 A CN 113899025A CN 202111130940 A CN202111130940 A CN 202111130940A CN 113899025 A CN113899025 A CN 113899025A
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- air
- section
- return
- surface cooling
- heat exchange
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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
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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
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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
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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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
- 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
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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
- 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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- 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
- F24F3/16—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 purification, e.g. by filtering; by sterilisation; by ozonisation
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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
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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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- 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 heat recovery air treatment system, comprising: a sensible heat exchange section having a first side and a second side opposite the first side; a first air return section; the two ends of the first air supply section are respectively communicated with the first side of the first air return section and the first side of the sensible heat exchange section; the surface cooling section is arranged on the second side; the second air return section is arranged on the first side; the fresh air and the primary return air are mixed into primary mixed air through a first air return section, the primary mixed air is conveyed to a sensible heat exchange section from a first air supply section and then conveyed to a surface cooling section from the sensible heat exchange section, the primary mixed air after surface cooling is conveyed to a second air return section from the sensible heat exchange section, and the primary mixed air and the secondary return air after surface cooling are mixed into secondary mixed air through the second air return section; the primary mixed air before surface cooling flowing from the first side to the second side and the primary mixed air after surface cooling flowing from the second side to the first side exchange heat in the sensible heat exchange section. The heat recovery air treatment system does not need to additionally arrange equipment for refrigerating and reheating primary mixed air, and saves energy consumption.
Description
Technical Field
The invention relates to the technical field of air treatment, in particular to a heat recovery air treatment system.
Background
For an operating room with higher cleanliness grade, the required fresh air quantity and the required circulating air quantity are constant and large, and a scheme of secondary return air is usually adopted. In the actual treatment process, the primary mixed air is cooled to the mechanical dew point temperature in advance, and then needs to be reheated to the relative humidity line, and then secondary return air treatment is carried out. Before the surface cooling, the refrigerating system runs all day long to meet the requirement of the surface cooling refrigerating capacity, the surface cooling and the reheating usually use electric heating, and the energy consumption before and after the surface cooling is mixed once can cause the waste of energy.
Disclosure of Invention
Therefore, it is necessary to provide a heat recovery air treatment system for solving the problem of large energy consumption before and after primary air mixing surface cooling.
A heat recovery air treatment system comprising:
a sensible heat exchange section having a first side and a second side opposite the first side;
a first air return section;
the two ends of the first air supply section are respectively communicated with the first air return section and the first side of the sensible heat exchange section;
the surface cooling section is arranged on the second side;
the second air return section is arranged on the first side;
the fresh air and the primary return air are mixed into primary mixed air through the first return air section, the primary mixed air is conveyed to the sensible heat exchange section for cooling through the first air supply section and then conveyed to the surface cooling section through the sensible heat exchange section for surface cooling, the primary mixed air after surface cooling is subjected to heat exchange through the sensible heat exchange section and conveyed to the second return air section, and the primary mixed air and the secondary return air after surface cooling are mixed into secondary mixed air through the second return air section;
and the primary air mixing before the surface cooling flowing from the first side to the second side and the primary air mixing after the surface cooling flowing from the second side to the first side carry out heat exchange in the sensible heat exchange section.
According to the heat recovery air treatment system, the sensible heat exchange section is arranged in front of the surface cooling section, and the sensible heat exchange section is used for exchanging heat of primary mixed air passing through the front part and the rear part of the surface cooling section, so that the requirements of cooling the primary mixed air at the surface cooling section and heating the primary mixed air at the surface cooling section can be met simultaneously, additional equipment for refrigerating and reheating the primary mixed air is not needed, and energy consumption is saved; the primary air mixing and supplying section is arranged in front of the sensible heat exchange section, and the primary air mixing and supplying after surface cooling can be further heated by utilizing the heat generated by the conveyor section, so that the energy consumption is further saved.
In one embodiment, the sensible heat exchange section has a first inlet and a first outlet on the first side, and a second inlet and a second outlet on the second side, the primary mixed air flows from the first inlet to the surface cooling section through the second outlet, and the primary mixed air after surface cooling flows from the second inlet to the second return air section through the first outlet.
In one embodiment, the surface cooling section comprises a cooling pipeline with a surface cooling inlet and a surface cooling outlet, the surface cooling inlet is communicated with the second outlet, and the surface cooling outlet is communicated with the second inlet.
In one embodiment, the air conditioner further comprises a first sensor, a control valve and a controller which are all electrically connected, wherein the first sensor is arranged at the meter cold outlet and used for detecting the temperature of the primary mixed air after meter cooling, the control valve is arranged on the cooling pipeline and used for adjusting the flow of the cooling pipeline, and the controller controls the control valve according to the temperature detected by the first sensor.
In one embodiment, the air conditioner further comprises a second air supply section, wherein the second air supply section is communicated with the second return air section, and the second air supply section is used for receiving and conveying the secondary mixed air.
In one embodiment, the air conditioner further comprises a heater and a second sensor, the second sensor and the heater are both electrically connected to the controller, the second sensor is arranged in the second air supply section and used for detecting the temperature of the secondary air mixing, the heater is arranged at one end, close to the second air supply section, of the second air return section, and the controller turns on and off the heater according to the temperature detected by the second sensor.
In one embodiment, the method further comprises at least one of the following steps:
the first filtering section is arranged between the first air return section and the first air supply section and is used for filtering the primary mixed air;
and the second filtering section is arranged between the second air return section and the second air supply section and is used for filtering the secondary air mixing.
In one embodiment, the air conditioner further comprises a first shell and a second shell which are arranged in a stacked manner, the first air return section and the first air supply section are both arranged on the first shell, and the second air return section and the second air supply section are both arranged on the second shell.
In one embodiment, the apparatus further includes a third casing, the third casing is disposed side by side with the first casing and the second casing, and the sensible heat exchange section and the surface cooling section are both disposed in the third casing.
In one embodiment, the air conditioner further comprises a first return air pipeline and a second return air pipeline, wherein the first return air pipeline is communicated with the first return air section and used for outputting primary return air, and the second return air pipeline is communicated with the second return air section and used for outputting secondary return air.
Drawings
FIG. 1 is a schematic diagram of a heat recovery air handling system in one embodiment.
Reference numerals:
100. a first air return section; 200. a first air supply section; 300. a sensible heat exchange section; 301. a first side; 302. a second side; 303. a first inlet; 304. a first outlet; 305. a second inlet; 306. a second outlet; 310. a sensible heat exchange core; 400. a surface cooling section; 410. a cooling pipeline; 411. a surface cooling inlet; 412. a surface cooling outlet; 420. a first sensor; 500. a second air return section; 600. a second air supply section; 610. a second sensor; 620. a heater; 700. a first filtration stage; 800. a second filtration stage; 900. a return air duct; 910. a first return air line; 920. a second return air line; 930. a return air fan; 940. adjusting a valve; 10. a controller; 20. a first housing; 30. a second housing; 40. and a third housing.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, the heat recovery air handling system in one embodiment includes a first air return section 100, a first blowing section 200, a sensible heat exchange section 300, a surface cooling section 400, and a second air return section 500. The sensible heat exchange section 300 has a first side 301 and a second side 302 opposite to the first side 301, two ends of the first blowing section 200 are respectively communicated with the first air return section 100 and the first side 301 of the sensible heat exchange section 300, the surface cooling section 400 is disposed on the second side 302, and the second air return section 500 is disposed on the first side 301.
As shown in fig. 1, the fresh air and the primary return air are mixed into a primary mixed air by the first return air section 100, the primary mixed air is conveyed from the first air supply section 200 to the sensible heat exchange section 300 and then conveyed from the sensible heat exchange section 300 to the surface cooling section 400, the primary mixed air after surface cooling is conveyed from the sensible heat exchange section 300 to the second return air section 500, and the primary mixed air and the secondary return air after surface cooling are mixed into a secondary mixed air by the second return air section 500.
It can be understood that, referring to fig. 1, the primary mixed air before surface cooling flowing from the first side 301 to the second side 302 and the primary mixed air after surface cooling flowing from the second side 302 to the first side 301 exchange heat in the sensible heat exchange section 300, so that the primary mixed air before surface cooling flowing from the first side 301 to the second side 302 is cooled, and the primary mixed air after surface cooling flowing from the second side 302 to the first side 301 is heated.
The sensible heat exchange section 300 is arranged in front of the surface cooling section 400, and the sensible heat exchange section 300 is utilized to exchange heat of primary mixed air passing through the front part and the rear part of the surface cooling section 400, so that the requirements of cooling the primary mixed air in the front of the surface cooling section 400 and heating the primary mixed air in the rear of the surface cooling section can be met simultaneously, additional equipment for refrigerating and reheating the primary mixed air is not needed, and energy consumption is saved; the primary air mixing and supplying section is arranged in front of the sensible heat exchange section 300, and the primary air mixing and supplying after surface cooling can be further heated by utilizing the heat generated by the conveyor section, so that the energy consumption is further saved.
It should be noted that the primary mixed air temperature after the surface cooling output by the surface cooling section 400 needs to be equal to or lower than a first preset temperature (i.e. the mechanical dew point temperature), and then can be conveyed to the sensible heat exchange section 300 for heat exchange; the primary mixed air temperature after heat exchange output by the sensible heat exchange section 300 is equal to or higher than a second preset temperature (i.e., relative humidity line temperature), and then is transported to the second return air section 500 to be mixed with the secondary return air.
In the embodiment shown in fig. 1, the sensible heat exchange section 300 has a first inlet 303, a first outlet 304, a second inlet 305, and a second outlet 306, the first inlet 303 and the first outlet 304 being located on the first side 301, and the second inlet 305 and the second outlet 306 being located on the second side 302.
In this embodiment, the primary mixed air flows from the first inlet 303 to the surface cooling section 400 through the second outlet 306, and the primary mixed air after surface cooling flows from the second inlet to the second return air section 500 through the first outlet 304.
In a specific embodiment, the sensible heat exchange section 300 is provided with a sensible heat exchange core 310, and the sensible heat exchange core 310 includes a plurality of layers of heat exchange plates arranged at intervals, and the heat exchange plates may be made of paper or a metal material with better thermal conductivity.
When the primary mixed air before surface cooling flows from the first side 301 to the second side 302, the primary mixed air before surface cooling flows to the surface cooling section 400 through the first inlet 303, the sensible heat exchange core 310 and the second outlet 306 in sequence; when the primary mixed air after surface cooling flows from the second side 302 to the first side 301, the primary mixed air after surface cooling flows to the second return air section 500 through the second inlet, the sensible heat exchange core 310 and the first outlet 304 in sequence. The primary mixed air before and after the surface cooling section 400 is subjected to heat transfer through the sensible heat exchange core body 310, so that the primary mixed air before the surface cooling is cooled and the primary mixed air after the surface cooling is heated.
In the embodiment shown in fig. 1, the surface cooling section 400 is provided with a cooling pipeline 410, and the cooling pipeline 410 is provided with a surface cooling inlet 411 and a surface cooling outlet 412.
In this embodiment, the surface cooling inlet 411 is in communication with the second outlet 306, and the surface cooling outlet 412 is in communication with the second inlet 305. The primary mixed air flows into the surface cooling pipeline through the first inlet 303, the second outlet 306 and the surface cooling inlet 411 in sequence to cool the surface, and the primary mixed air after surface cooling flows into the second air return section 500 through the surface cooling outlet 412, the second inlet and the first outlet 304 in sequence.
The primary mixed air temperature after the surface cooling output by the surface cooling section 400 is equal to or lower than a first preset temperature and then can be conveyed to the sensible heat exchange section 300 for heat exchange. Therefore, it is necessary to detect the primary air-mixed temperature after the surface cooling and adjust the surface cooling speed of the cooling duct 410.
In this embodiment, the heat recovery air handling system further includes a controller 10. The meter cooling section 400 is further provided with a first sensor 420 and a control valve (not shown) electrically connected to the controller 10, the first sensor 420 is disposed at the meter cooling outlet 412 and is used for detecting the temperature of the primary mixed air after meter cooling, the control valve is disposed in the cooling pipeline 410 and is used for adjusting the flow rate of the cooling pipeline 410, and the controller 10 controls the control valve according to the temperature detected by the first sensor 420. Through the setting, the flow of the cooling pipeline 410 can be adjusted by the regulating and controlling adjusting valve 940, so that the cooling speed of the cooling pipeline 410 is adjusted.
For example, when the first sensor 420 detects that the temperature of the primary mixed air after the surface cooling is higher than the first preset temperature, the controller 10 adjusts and controls the first control valve to increase the flow rate of the cooling pipeline 410 to increase the cooling capacity, so that the primary mixed air can be rapidly cooled to the first preset temperature; when the first sensor 420 detects that the primary mixed air temperature after the surface cooling is equal to or lower than the first preset temperature, the primary mixed air temperature after the surface cooling can be directly conveyed to the sensible heat exchange section 300 for heat exchange.
In the embodiment shown in fig. 1, the heat recovery air processing system further includes a second air supply section 600, the second air supply section 600 is communicated with the second air return section 500, and the second air supply section 600 is used for receiving and delivering secondary mixed air.
The secondary air-mixing temperature output from the second air supply section 600 needs to reach a third preset temperature before being output to the room due to the second air supply section 600. Therefore, the secondary mixed air temperature needs to be detected and adjusted.
In this embodiment, the second air blowing section 600 further has a second sensor 610 and a heater 620, and the second sensor 610 and the heater 620 are electrically connected to the controller 10. The second sensor 610 is disposed at the second air supply section 600 and is used for detecting the temperature of the secondary air mixing, the heater 620 is disposed at one end of the second air return section 500 close to the second air supply section 600, and the controller 10 turns on and off the heater 620 according to the temperature detected by the second sensor 610.
For example, when the second sensor 610 detects that the secondary mixed air temperature is equal to or higher than a third preset temperature, the controller 10 does not activate the heater 620; when the second sensor 610 detects that the temperature of the secondary mixed air is lower than the third preset temperature, the controller 10 activates the heater 620, so that the temperature of the secondary mixed air can be rapidly raised to the third preset temperature.
In particular embodiments, heater 620 may be an electric heater 620 or a fuel oil heater 620.
As shown in fig. 1, the heat recovery air processing system further includes a first filtering section 700 and a second filtering section 800, the first filtering section 700 is disposed between the first air return section 100 and the first air supply section 200 and is used for filtering the primary mixed air, and the second filtering section 800 is disposed between the second air return section 500 and the second air supply section 600 and is used for filtering the secondary mixed air.
In this embodiment, the first filtering section 700 is provided with at least one set of coarse filters for filtering the dust with larger particle size (e.g. larger than 5 μm) and other impurities in the primary mixed air to prevent the dust from entering and damaging the fan in the first air supply section 200. The second filtering section 800 is provided with at least one set of middle effect filter, and the middle effect filter is used for filtering particles with smaller particle size (for example, smaller than 5 micrometers) in the secondary air mixing and other impurities, so as to prevent dust from entering and damaging the fan in the second air supply section 600.
In other embodiments, the first filtering section 700 and the second filtering section 800 may further include a high efficiency filter, a combined filter, or a filter screen to better filter dust and impurities in the primary air mixing and the secondary air mixing.
In the embodiment shown in fig. 1, the heat recovery air processing system further includes a first casing 20 and a second casing 30, and the first casing 20 and the second casing 30 are stacked.
In this embodiment, the first casing 20 and the second casing 30 are stacked vertically (i.e., in the Y direction shown in fig. 1). The first air return section 100 and the first blowing section 200 are disposed in the first casing 20 in parallel in the lateral direction (i.e., the X direction shown in fig. 1), and the second air return section 500 and the second blowing section 600 are disposed in the second casing 30 in parallel in the lateral direction. Through this setting, can improve space utilization, avoid appearing the not enough condition that can't place the unit in space.
Further, as shown in fig. 1, the heat recovery air processing system further includes a third housing 40, and the third housing 40 is disposed side by side with the first housing 20 and the second housing 30.
In this embodiment, the third housing 40 is laterally arranged side by side with the first housing 20 and the second housing 30. The sensible heat exchange section 300 and the surface cooling section 400 are arranged side by side in the lateral direction in the third casing 40. Through this setting, can further improve space utilization.
In the embodiment shown in fig. 1, the heat recovery air treatment system includes a return duct 900, and the return duct 900 is spaced apart from the first casing 20 and the second casing 30. A first return air pipeline 910 and a second return air pipeline 920 are disposed in the return air pipeline 900, the first return air pipeline 910 is connected to the first return air section 100 and is used for outputting primary return air, and the second return air pipeline 920 is connected to the second return air section 500 and is used for outputting secondary return air.
In this embodiment, a return air fan 930 is further disposed in the return air duct 900, and the first return air pipeline 910 and the second return air pipeline 920 are both connected to the return air fan 930, and return air is output by using the same return air fan 930 as a power source, which is beneficial to saving energy consumption.
As shown in fig. 1, the first air return pipeline 910 and the second air return pipeline 920 are both provided with an adjusting valve 940, and the air volume output by the pipelines is adjusted by the adjusting valve 940, so as to avoid the situation of wind direction hedging in the pipelines.
In the present embodiment, the regulating valve 940 is a manual two-way multi-vane valve, and the output air volume of the duct is regulated by manually regulating the valve of the regulating valve 940. In other embodiments, the regulating valve 940 may also be a solenoid valve, which can be remotely controlled by the controller 10.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A heat recovery air handling system, comprising:
a sensible heat exchange section having a first side and a second side opposite the first side;
a first air return section;
the two ends of the first air supply section are respectively communicated with the first air return section and the first side of the sensible heat exchange section;
the surface cooling section is arranged on the second side;
the second air return section is arranged on the first side;
the fresh air and the primary return air are mixed into primary mixed air through the first return air section, the primary mixed air is conveyed to the sensible heat exchange section for cooling through the first air supply section and then conveyed to the surface cooling section through the sensible heat exchange section for surface cooling, the primary mixed air after surface cooling is subjected to heat exchange through the sensible heat exchange section and conveyed to the second return air section, and the primary mixed air and the secondary return air after surface cooling are mixed into secondary mixed air through the second return air section;
and the primary air mixing before the surface cooling flowing from the first side to the second side and the primary air mixing after the surface cooling flowing from the second side to the first side carry out heat exchange in the sensible heat exchange section.
2. The heat recovery air treatment system according to claim 1, wherein the sensible heat exchange section has a first inlet and a first outlet on the first side, and a second inlet and a second outlet on the second side, the primary mixed air flows from the first inlet to the surface cooling section through the second outlet, and the primary mixed air after surface cooling flows from the second inlet to the second return air section through the first outlet.
3. The heat recovery air treatment system of claim 2, wherein the surface cooling section includes a cooling circuit having a surface cooling inlet and a surface cooling outlet, the surface cooling inlet being in communication with the second outlet, the surface cooling outlet being in communication with the second inlet.
4. The heat recovery air treatment system according to claim 3, further comprising a first sensor, a control valve and a controller, all of which are electrically connected, wherein the first sensor is arranged at the meter cold outlet and used for detecting the temperature of the primary mixed air after meter cold, the control valve is arranged on the cooling pipeline and used for adjusting the flow of the cooling pipeline, and the controller controls the control valve according to the temperature detected by the first sensor.
5. The heat recovery air handling system of claim 4, further comprising a second air supply section in communication with the second return air section, the second air supply section configured to receive and deliver the secondary mixed air.
6. The heat recovery air treatment system according to claim 5, further comprising a heater and a second sensor, wherein the second sensor and the heater are both electrically connected to the controller, the second sensor is disposed in the second air supply section and used for detecting the temperature of the secondary mixed air, the heater is disposed at one end of the second air return section close to the second air supply section, and the controller turns on and off the heater according to the temperature detected by the second sensor.
7. The heat recovery air treatment system of claim 5, further comprising at least one of:
the first filtering section is arranged between the first air return section and the first air supply section and is used for filtering the primary mixed air;
and the second filtering section is arranged between the second air return section and the second air supply section and is used for filtering the secondary air mixing.
8. The heat recovery air treatment system of claim 5, further comprising a first housing and a second housing arranged in a stacked configuration, wherein the first air return section and the first air supply section are both disposed in the first housing, and the second air return section and the second air supply section are both disposed in the second housing.
9. The heat recovery air treatment system of claim 8, further comprising a third housing, the third housing being juxtaposed to the first housing and the second housing, the sensible heat exchange section and the surface cooling section being disposed in the third housing.
10. The heat recovery air handling system of claim 1, further comprising a first return air line and a second return air line, the first return air line communicating with the first return air section and configured to output primary return air, the second return air line communicating with the second return air section and configured to output secondary return air.
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| CN202111130940.9A CN113899025A (en) | 2021-09-26 | 2021-09-26 | Heat recovery air treatment system |
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| CN202111130940.9A CN113899025A (en) | 2021-09-26 | 2021-09-26 | Heat recovery air treatment system |
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| CN114353207A (en) * | 2022-01-24 | 2022-04-15 | 珠海格力电器股份有限公司 | Air conditioning unit |
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