CN114198845B - Fresh air equipment - Google Patents

Fresh air equipment Download PDF

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Publication number
CN114198845B
CN114198845B CN202111560256.4A CN202111560256A CN114198845B CN 114198845 B CN114198845 B CN 114198845B CN 202111560256 A CN202111560256 A CN 202111560256A CN 114198845 B CN114198845 B CN 114198845B
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China
Prior art keywords
air
temperature
heat exchanger
water
valve
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Application number
CN202111560256.4A
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Chinese (zh)
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CN114198845A (en
Inventor
聂宝平
陈远远
郑现友
陈桂福
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202111560256.4A priority Critical patent/CN114198845B/en
Publication of CN114198845A publication Critical patent/CN114198845A/en
Application granted granted Critical
Publication of CN114198845B publication Critical patent/CN114198845B/en
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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
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/039—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing using water to enhance cooling, e.g. spraying onto condensers
    • 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
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/70—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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
    • 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
    • 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
    • F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • 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
    • 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
    • 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

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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)
  • Human Computer Interaction (AREA)
  • Central Air Conditioning (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses a fresh air device, which comprises: one side of the shell is provided with an air outlet and an air suction opening and is suitable for being arranged indoors; the other side is provided with an air inlet and an air outlet which are suitable for being arranged outdoors; a total heat exchanger disposed in the shell; the total heat exchanger is provided with a first heat exchange air duct and a second heat exchange air duct; the air inlet, the first heat exchange air channel and the air outlet are communicated to form an air inlet channel, and the air suction opening, the second heat exchange air channel and the air outlet are communicated to form an air outlet channel; a heat recovery system disposed in the housing; the first heat exchanger is arranged in the air exhaust channel, the second heat exchanger is arranged in the air inlet channel and along the air inlet direction in the air inlet channel, and the second heat exchanger is positioned at the upstream of the total heat exchanger. So set up, because the new trend temperature is higher, can play and prevent the frosting that produces when total heat exchanger 3 exchanges with indoor exhaust heat and moisture.

Description

Fresh air equipment
Technical Field
The invention relates to the technical field of fresh air equipment, in particular to fresh air equipment.
Background
At present, with the improvement of living standard of people, the use of fresh air equipment is more and more. Fresh air equipment is generally furnished with total heat recovery unit, but when cold areas winter, because indoor outer humiture is different great for when outside exhaust hot-blast carries humid air through total heat recovery unit, the cold wind that total heat recovery unit inhaled can be at total heat recovery unit's return air side with the humid air frost. The frosted total heat recovery device not only influences the heat exchange performance, but also possibly causes blockage in serious conditions, and influences the operation of the whole machine.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that when the air conditioner is used in cold regions in winter, the air return side of the total heat recovery device frosts wet air due to large difference between indoor and outdoor temperature and humidity, so that the fresh air equipment is provided.
In order to achieve the above object, an embodiment of the present invention provides a fresh air device, including: one side of the shell is provided with an air outlet and an air suction opening and is suitable for being arranged indoors; the other side is provided with an air inlet and an air outlet which are suitable for being arranged outdoors; a total heat exchanger disposed in the shell; the total heat exchanger is provided with a first heat exchange air channel and a second heat exchange air channel; the air inlet, the first heat exchange air channel and the air outlet are communicated to form an air inlet channel, and the air suction opening, the second heat exchange air channel and the air outlet are communicated to form an air outlet channel; a heat recovery system disposed in the housing; the heat recovery system comprises a first heat exchanger, a second heat exchanger and a liquid storage assembly which are connected in series, and the liquid storage assembly is suitable for storing heat exchange media flowing in the first heat exchanger and the second heat exchanger; the first heat exchanger is arranged in the air exhaust channel, the second heat exchanger is arranged in the air inlet channel and along the air inlet direction in the air inlet channel, and the second heat exchanger is positioned at the upstream of the total heat exchanger.
Optionally, the heat recovery system further comprises: the water inlet end of the switch assembly is connected with the water outlet end of the liquid storage assembly, the first water outlet end of the switch assembly is connected with the water inlet end of the first heat exchanger, and the second water outlet end of the switch assembly is connected with the water inlet end of the second heat exchanger; one end of the first valve is connected with the water outlet end of the first heat exchanger, and the other end of the first valve is connected with the water inlet end of the second heat exchanger; and the water outlet end of the second heat exchanger is connected with the water inlet end of the liquid storage component.
Optionally, an air conditioning device is further arranged in the casing, a condenser is arranged in the air conditioning device, and the condenser is arranged in the air exhaust channel; the heat recovery system also comprises a spraying device, and the spraying device is positioned above the condenser; and the water inlet end of the spraying device is communicated with the water outlet end of the liquid storage component.
Optionally, the heat recovery system further comprises: and the first end of the second valve is communicated with the water inlet end of the spraying device, and the second end of the second valve is communicated with the water outlet end of the liquid storage assembly.
Optionally, an evaporator and a water pan are further arranged in the air conditioning equipment, and the water pan is arranged below the evaporator; and the water outlet end of the water receiving tray is communicated with the water inlet end of the liquid storage assembly.
Optionally, the reservoir assembly comprises: the liquid storage tank is provided with a first opening, a second opening and a third opening; the first opening is communicated with the water outlet end of the water receiving tray through a first pipeline, and the second opening is communicated with the water outlet end of the second heat exchanger through a second pipeline; and the water pump inlet is inserted into the liquid storage tank from the third opening through a third pipeline, and the water pump outlet is simultaneously communicated with the water inlet end of the switch assembly and the second end of the second valve.
Optionally, the method comprises the following steps: the air conditioning equipment is also internally provided with a compressor, and the water pump is in communication connection with the compressor; the temperature and humidity sensor is arranged in the shell; the temperature and humidity sensor is in communication connection with the water pump; the temperature and humidity sensor is used for detecting the temperature and humidity of the air inlet and the air outlet; and the controller is simultaneously in communication connection with the water pump, the compressor and the temperature and humidity sensor.
Optionally, the working mode of the fresh air equipment is obtained through the controller, and when the fresh air equipment is in the heating mode, the controller detects the outdoor fresh air temperature through the temperature and humidity sensor; when the temperature and humidity sensor detects that the temperature of fresh air of the air inlet is within a first preset range, if the exhaust temperature of the compressor is higher than a preset temperature, the controller controls the water pump to operate at a first rotating speed; if the exhaust temperature of the compressor is lower than the preset temperature, the controller controls the water pump to operate at a second rotating speed; the first rotational speed is higher than the second rotational speed.
Optionally, the method further comprises: when the temperature and humidity sensor detects that the temperature of the fresh air of the air inlet is smaller than the first preset range, the water pump operates at a third rotating speed, and the third rotating speed is higher than the first rotating speed; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet is larger than the first preset range, the controller detects the relative air exhaust humidity of the air suction opening through the temperature and humidity sensor; if the relative humidity of the exhaust air is lower than the preset humidity, the controller controls the water pump not to operate; and if the relative humidity of the exhaust air is greater than or equal to the preset humidity, the controller controls the water pump to operate at the second rotating speed.
Optionally, the controller controls the temperature and humidity sensor to detect once every preset time.
Optionally, the method further comprises: acquiring the working mode of the fresh air equipment through the controller, and detecting the outdoor fresh air temperature through the temperature and humidity sensor by the controller when the fresh air equipment is in a refrigeration mode; when the temperature and humidity sensor detects that the temperature of fresh air of the air inlet is within a second preset range, the second valve is opened, and the controller controls the water pump to operate at the first rotating speed or the second rotating speed; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet is smaller than the second preset range, the controller controls the water pump not to operate; and when the temperature and humidity sensor detects that the fresh air temperature of the air inlet is larger than the second preset range, the second valve is opened, and the controller controls the water pump to operate at the third rotating speed.
Optionally, the method further comprises: the first air valve is arranged on the shell; the air inlet end of the first air valve is communicated with the air inlet channel, and the air outlet end of the first air valve is communicated with the air exhaust channel; and along the air inlet direction of the air inlet channel, the air inlet end of the first air valve is positioned at the downstream of the second heat exchanger, and the air outlet end of the first air valve is positioned between the first heat exchanger and the total heat exchanger 3.
Optionally, the method further comprises: the second air valve is arranged on the shell; the air inlet end of the second air valve is communicated with the air exhaust channel, and the air outlet end of the second air valve is communicated with the air inlet channel; and the air inlet end of the second air valve is positioned between the air suction opening and the total heat exchanger 3, and the air outlet end of the second air valve is positioned at the upstream of the evaporator.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the embodiment of the invention provides a fresh air device, which comprises: one side of the shell is provided with an air outlet and an air suction opening and is suitable for being arranged indoors; the other side is provided with an air inlet and an air outlet which are suitable for being arranged outdoors; a total heat exchanger disposed in the shell; the total heat exchanger is provided with a first heat exchange air duct and a second heat exchange air duct; the air inlet, the first heat exchange air channel and the air outlet are communicated to form an air inlet channel, and the air suction opening, the second heat exchange air channel and the air outlet are communicated to form an air outlet channel; a heat recovery system disposed in the housing; the heat recovery system comprises a first heat exchanger, a second heat exchanger and a liquid storage assembly which are connected in series, and the liquid storage assembly is suitable for storing heat exchange media flowing in the first heat exchanger and the second heat exchanger; the first heat exchanger is arranged in the air exhaust channel, the second heat exchanger is arranged in the air inlet channel and is positioned at the upstream of the total heat exchanger along the air inlet direction in the air inlet channel.
So set up, when using winter in cold areas, fresh air equipment is after opening the mode of heating, and the heat transfer is carried out with the heat transfer medium among the first heat exchanger behind the passageway of airing exhaust from the inspiratory hot-blast of inlet scoop, and first heat exchanger can absorb the waste heat among the hot-blast in the heat transfer process. After the heat exchange medium with higher temperature enters the second heat exchanger after heat exchange, the second heat exchanger can be heated. Then, the cold air sucked from the air inlet exchanges heat with the second heat exchanger after passing through the second heat exchanger, so that the sucked cold air can be preheated. The preheated fresh air is sent into the room through the parts such as the total heat exchanger, the air outlet and the like in sequence. Because the fresh air has higher temperature, the frosting generated when the total heat exchanger 3 exchanges heat and humidity with indoor exhaust air can be prevented.
And when the fresh air equipment carries out refrigeration, cold air sucked from the air suction opening passes through the air exhaust channel and then exchanges heat with the heat exchange medium in the first heat exchanger, and the first heat exchanger can absorb cold energy in the cold air in the heat exchange process. After the heat exchange medium with lower temperature enters the second heat exchanger after heat exchange, the second heat exchanger can be cooled. And then, the hot air sucked from the air inlet is subjected to heat exchange with the second heat exchanger after passing through the second heat exchanger, so that the sucked hot air can be cooled. The cooled fresh air is sent into the room through the parts such as the total heat exchanger, the air outlet and the like in sequence, so that the heat load of a refrigerating system in the fresh air equipment is reduced.
2. In the embodiment of the invention, the shell is also provided with air conditioning equipment, the air conditioning equipment is internally provided with a condenser, and the condenser is arranged in the air exhaust channel; the heat recovery system also comprises a spraying device, and the spraying device is positioned above the condenser; the technical scheme that the water inlet end of the spraying device is communicated with the water outlet end of the liquid storage assembly enables the condenser to be cooled through the spraying device when the fresh air equipment is used for refrigerating, and therefore the heat exchange efficiency of the condenser is improved.
3. In the embodiment of the invention, the air conditioning equipment is also provided with an evaporator and a water pan, and the water pan is arranged below the evaporator; the technical scheme that the water outlet end of the water pan is communicated with the water inlet end of the liquid storage assembly' is that when the fresh air equipment is used for refrigerating, condensed water collected from an evaporator can be continuously collected into the liquid storage assembly through the water pan, and then the condenser is cooled through the spraying device, so that a heat exchange medium in the liquid storage assembly does not need to be manually added by a user, and the whole working efficiency of the fresh air equipment can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for a worker of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an internal pipeline of a fresh air device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first wind flow direction of a fresh air device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a second wind flow direction of a fresh air device according to an embodiment of the present invention;
FIG. 4 is a flow chart of a heating process of a fresh air device according to an embodiment of the present invention;
fig. 5 is a flow chart of a refrigeration process of the fresh air device according to the embodiment of the present invention.
Reference numerals:
101. a second heat exchanger; 102. a third valve; 103. a first valve; 104. a fourth valve; 105. a branch flow path; 106. a first heat exchanger; 107. a main flow path; 108. a second valve; 109. an inlet of the water pump; 110. a second opening; 111. a first opening; 112. a liquid storage tank; 113. a shower head; 114. a second pipeline; 115. an outlet of the water pump; 116. a water pump; 117. an overflow port; 118. a spraying device; 119. a water pan.
1. A housing; 2. a first air valve; 3. a total heat exchanger; 4. a second air valve; 5. a first temperature and humidity sensor; 6. a fresh air fan; 7. a partition plate; 8. an air inlet; 9. an evaporator; 10. an evaporation chamber; 11. an air outlet; 12. a water discharge port; 13. a heat recovery system; 14. a throttle valve; 15. a reversing valve; 16. a compressor; 17. a condenser; 18. a controller; 19. an air exhaust channel; 20. an air outlet; 21. an exhaust fan; 22. a second temperature and humidity sensor; 23. an air inlet; 24. an air inlet channel; 25. a primary filter; 26. a secondary filter; 27. a fresh air branch; 28. and an air exhaust branch.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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 obtained by a worker skilled in the art without creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in a specific case to a worker of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
At present, with the improvement of living standard of people, the use of fresh air equipment is more and more. The fresh air equipment is generally provided with the total heat recovery device, but when the fresh air equipment is used in cold regions in winter, the temperature and the humidity difference between the indoor air and the outdoor air is large, so that when the hot air discharged outwards carries the humid air to pass through the total heat recovery device, the cold air sucked by the total heat recovery device can frost the humid air on the air return side of the total heat recovery device. The frosted total heat recovery device not only influences the heat exchange performance, but also possibly causes blockage in serious conditions, and influences the operation of the whole machine.
Therefore, the technical problem to be solved by the invention is that when the air conditioner is used in winter in a cold area in the prior art, the air return side of the total heat recovery device frosts the wet air due to large difference between indoor temperature and outdoor temperature, so that the fresh air equipment is provided.
Example 1
As shown in fig. 1 to 5, an embodiment of the present invention provides a fresh air device, including: a shell 1, a total heat exchanger 3 and a heat recovery system 13.
In particular, the housing 1 is provided with an air outlet 11 and an air suction opening 8 on a side suitable for being arranged indoors. The other side of the housing 1, which is adapted to be disposed outdoors, is provided with an air inlet 23 and an air outlet 20. The total heat exchanger 3 is arranged in the shell 1, and the total heat exchanger 3 is provided with a first heat exchange air duct and a second heat exchange air duct. In the embodiment of the present invention, the air inlet 23, the first heat exchange air duct and the air outlet 11 are communicated to form an air inlet channel 24, and the air suction opening 8, the second heat exchange air duct and the air outlet 20 are communicated to form an air outlet channel 19. The two sides of the air inlet channel 24 and the air outlet channel 19 can be formed by clapboards 7, a fresh air fan 6 is arranged in the air inlet channel 24, and an air outlet fan 21 is arranged in the air outlet channel 19. The air inlet 23 is provided with a primary filter 25 and a secondary filter 26 for filtering impurities in the air.
Further, in the present embodiment, a heat recovery system 13 is provided in the housing 1. Specifically, the heat recovery system 13 includes a first heat exchanger 106, a second heat exchanger 101, and a liquid storage assembly connected in series, wherein the liquid storage assembly is adapted to store a heat exchange medium flowing in the first heat exchanger 106 and the second heat exchanger 101. For the heat exchange medium, water is used in the embodiment of the invention. Of course, a person skilled in the art may change the heat exchange medium according to actual situations, and this embodiment is only for illustration, but not for limitation, and may achieve the same technical effect. The first heat exchanger 106 is arranged in the exhaust air channel 19, the second heat exchanger 101 is arranged in the air inlet channel 24, and the second heat exchanger 101 is positioned at the upstream of the total heat exchanger 3 along the air inlet direction in the air inlet channel 24.
With the arrangement, when the air conditioner is used in cold regions in winter, after the heating mode is started, the fresh air equipment exchanges heat with the heat exchange medium in the first heat exchanger 106 after hot air sucked from the air suction opening 8 passes through the air exhaust channel 19, and the first heat exchanger 106 can absorb waste heat in the hot air in the heat exchange process. After the heat exchange medium with a higher temperature after heat exchange enters the second heat exchanger 101, the second heat exchanger 101 can be heated. Then, the cool air sucked from the air inlet 23 is heat-exchanged with the second heat exchanger 101 after passing through the second heat exchanger 101, so that the sucked cool air can be preheated. The preheated fresh air is sent into the room through the total heat exchanger 3, the air outlet 11 and other parts in sequence. Because the fresh air has higher temperature, the frosting generated when the total heat exchanger 3 exchanges heat and humidity with indoor exhaust air can be prevented.
Moreover, when the fresh air equipment performs refrigeration, cold air sucked from the air suction opening 8 passes through the exhaust channel 19 and then exchanges heat with the heat exchange medium in the first heat exchanger 106, and the first heat exchanger 106 can absorb cold energy in the cold air in the heat exchange process. After the heat exchange medium with a lower temperature enters the second heat exchanger 101 after heat exchange, the second heat exchanger 101 can be cooled. Then, the hot air sucked from the air inlet 23 passes through the second heat exchanger 101, and then exchanges heat with the second heat exchanger 101, so that the temperature of the sucked hot air can be lowered. The cooled fresh air is sent into the room through the total heat exchanger 3, the air outlet 11 and other parts in sequence, so that the heat load of a refrigerating system in the fresh air equipment is reduced.
Optionally, the heat recovery system 13 further includes a switch assembly and a first valve 103, a water inlet end of the switch assembly is connected to a water outlet end of the liquid storage assembly, a first water outlet end of the switch assembly is connected to a water inlet end of the first heat exchanger 106, and a second water outlet end of the switch assembly is connected to a water inlet end of the second heat exchanger 101. Specifically, the switching assembly may also be a third valve 102 and a fourth valve 104 in parallel. One end of the first valve 103 is connected to the water outlet of the first heat exchanger 106 through a branch flow path 105, and the other end of the first valve 103 is connected to the water inlet of the second heat exchanger 101; and the water outlet end of the second heat exchanger 101 is connected with the water inlet end of the liquid storage assembly.
Optionally, an air conditioning device is further disposed in the casing 1, a condenser 17 is disposed in the air conditioning device, and the condenser 17 is disposed in the air exhaust channel 19; the heat recovery system 13 further comprises a spray device 118, the spray device 118 being located above the condenser 17; the water inlet end of the spraying device 118 is communicated with the water outlet end of the liquid storage component. The shower unit 118 is also provided with a plurality of shower heads 113.
In the embodiment of the present invention, "an air conditioning device is further disposed in the housing 1, a condenser 17 is disposed in the air conditioning device, and the condenser 17 is disposed in the exhaust passage 19; the heat recovery system 13 further comprises a spray device 118, the spray device 118 being located above the condenser 17; the technical scheme that the water inlet end of the spraying device 118 is communicated with the water outlet end of the liquid storage assembly enables the condenser 17 to be cooled through the spraying device 118 when the fresh air equipment is used for refrigerating, and therefore the heat exchange efficiency of the condenser 17 is improved.
Optionally, the heat recovery system 13 further comprises a second valve 108, a first end of the second valve 108 is in communication with the water inlet of the spray device 118, and a second end of the second valve 108 is in communication with the water outlet of the liquid reservoir assembly.
Optionally, an evaporation chamber 10 is further arranged in the air conditioning equipment, an evaporator 9 and a water pan 119 are arranged in the evaporation chamber 10, and the water pan 119 is arranged below the evaporator 9; the water outlet end of the water pan 119 is communicated with the water inlet end of the liquid storage assembly. A drain opening 12 for draining excess condensate is also provided in the evaporation chamber 10.
In the embodiment of the invention, the air conditioning equipment is also provided with an evaporator 9 and a water pan 119, and the water pan 119 is arranged below the evaporator 9; the technical scheme that the water outlet end of the water pan 119 is communicated with the water inlet end of the liquid storage assembly' is that when the fresh air equipment is used for refrigerating, condensed water collected from the evaporator 9 can be continuously collected into the liquid storage assembly through the water pan 119, and then the condenser 17 is cooled through the spraying device 118, so that a heat exchange medium in the liquid storage assembly does not need to be added manually by a user, and the overall working efficiency of the fresh air equipment can be improved.
Optionally, the liquid storage assembly comprises a liquid storage tank 112 and a water pump 116, wherein the liquid storage tank 112 is provided with a first opening 111, a second opening 110 and a third opening; the first opening 111 is communicated with the water outlet end of the water receiving tray 119 through a first pipeline, and the second opening 110 is communicated with the water outlet end of the second heat exchanger 101 through a second pipeline 114. The water pump inlet 109 is inserted into the liquid storage tank 112 through a third pipe from the third opening, and the water pump outlet 115 is simultaneously communicated with the water inlet end of the switch assembly and the second end of the second valve 108. Specifically, the water pump outlet 115 communicates with the water inlet of the switch assembly through the main flow path 107, and the second end of the second valve 108 communicates with the main flow path 107. The liquid storage tank 112 is further provided with an overflow port 117, and the overflow port 117 can prevent the overflow of the water in the liquid storage tank 112.
Optionally, this new trend equipment still includes following structure:
the air conditioning equipment is also provided with a controller 18, a compressor 16 and a temperature and humidity sensor, and the water pump 116 is in communication connection with the compressor 16; the temperature and humidity sensor is arranged in the shell 1; the temperature and humidity sensor is in communication connection with the water pump 116; the temperature and humidity sensor is used for detecting the temperature and humidity of the air inlet 23 and the air outlet 11; the controller 18 is simultaneously in communication connection with the water pump 116, the compressor 16 and the temperature and humidity sensor. Two temperature and humidity sensors can be arranged, namely a first temperature and humidity sensor 5 and a second temperature and humidity sensor 22. The first temperature and humidity sensor 5 is arranged in the air exhaust channel 19, and the second temperature and humidity sensor 22 is arranged in the air inlet channel 24. The compressor 16 is also connected to a condenser 17 through one outlet of a direction change valve 15, the other outlet of the direction change valve 15 is connected to one end of the evaporator 9, and one end of the condenser 17 is connected to the other end of the evaporator 9 through a throttle valve 14.
Optionally, the controller 18 comprises the following working processes:
as shown in fig. 4, the working mode of the fresh air device is obtained through the controller 18, and when the fresh air device is in the heating mode, the controller 18 detects the outdoor fresh air temperature through the temperature and humidity sensor; when the temperature and humidity sensor detects that the temperature of the fresh air in the air inlet 23 is within a first preset range, if the exhaust temperature of the compressor 16 is higher than a preset temperature, the controller 18 controls the water pump 116 to operate at a first rotation speed; if the discharge temperature of the compressor 16 is lower than the preset temperature, the controller 18 controls the water pump 116 to operate at a second rotation speed; the first rotational speed is higher than the second rotational speed.
When the temperature and humidity sensor detects that the temperature of the fresh air in the air inlet 23 is smaller than the first preset range, the water pump 116 operates at a third rotating speed, and the third rotating speed is higher than the first rotating speed; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet 23 is larger than the first preset range, the controller 18 detects the relative exhaust humidity of the air suction opening 8 through the temperature and humidity sensor; if the relative humidity of the exhaust air is lower than the preset humidity, the controller 18 controls the water pump 116 not to operate; if the relative humidity of the discharged air is greater than or equal to the preset humidity, the controller 18 controls the water pump 116 to operate at the second rotation speed.
Optionally, the controller 18 controls the temperature and humidity sensor to detect the temperature and humidity sensor once every preset time.
Optionally, the controller 18 further comprises the following operation processes:
as shown in fig. 5, the working mode of the fresh air device is obtained through the controller 18, and when the fresh air device is in the cooling mode, the controller 18 detects the outdoor fresh air temperature through the temperature and humidity sensor; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet 23 is within a second preset range, the second valve 108 is opened, and the controller 18 controls the water pump 116 to operate at the first rotating speed or the second rotating speed; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet 23 is smaller than the second preset range, the controller 18 controls the water pump 116 not to operate; when the temperature and humidity sensor detects that the fresh air temperature of the air inlet 23 is greater than the second preset range, the second valve 108 is opened, and the controller 18 controls the water pump 116 to operate at the third rotation speed.
Optionally, the fresh air device further includes a first air valve 2, and the first air valve 2 is disposed on the casing 1; the air inlet end of the first air valve 2 is communicated with the air inlet channel 24, and the air outlet end of the first air valve 2 is communicated with the air outlet channel 19; and along the air inlet direction of the air inlet channel 24, the air inlet end of the first air valve 2 is located at the downstream of the second heat exchanger 101, and the air outlet end of the first air valve 2 is located between the first heat exchanger 106 and the total heat exchanger 3.
Optionally, the fresh air device further includes a second air valve 4, and the second air valve 4 is disposed on the housing 1; the air inlet end of the second air valve 4 is communicated with the air exhaust channel 19, and the air outlet end of the second air valve 4 is communicated with the air inlet channel 24; and the air inlet end of the second air valve 4 is positioned between the air suction opening 8 and the total heat exchanger 3, and the air outlet end of the second air valve 4 is positioned at the upstream of the evaporator 9.
The intake duct 24 and the exhaust duct 19 are divided into two by the opening of the first damper 2 and the second damper 4, as shown in fig. 3. One part of the exhaust air forms an exhaust air branch 28 under the action of the fresh air fan 6, and the exhaust air branch 28 and the fresh air are mixed and then enter the evaporator 99; part of the fresh air forms a fresh air branch 27 under the action of the exhaust fan 2121, and the fresh air branch 27 and the exhaust air are mixed and enter the condenser 17.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art upon reference to the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims (5)

1. A new trend equipment, its characterized in that includes:
the air conditioner comprises a shell (1), wherein one side of the shell is provided with an air outlet (11) and an air suction opening (8) which are suitable for being arranged indoors; the other side is provided with an air inlet (23) and an air outlet (20) which are suitable for being arranged outdoors;
a total heat exchanger (3) disposed in the shell (1); the total heat exchanger (3) is provided with a first heat exchange air duct and a second heat exchange air duct; the air inlet (23), the first heat exchange air channel and the air outlet (11) are communicated to form an air inlet channel (24), and the air suction opening (8), the second heat exchange air channel and the air outlet (20) are communicated to form an air exhaust channel (19);
a heat recovery system (13) disposed in the housing (1); the heat recovery system (13) comprises a first heat exchanger (106), a second heat exchanger (101) and a liquid storage assembly which are connected in series, wherein the liquid storage assembly is suitable for storing heat exchange media flowing in the first heat exchanger (106) and the second heat exchanger (101);
the first heat exchanger (106) is arranged in the air exhaust channel (19), the second heat exchanger (101) is arranged in the air inlet channel (24), and the second heat exchanger (101) is positioned at the upstream of the total heat exchanger (3) along the air inlet direction in the air inlet channel (24);
the shell (1) is also internally provided with air conditioning equipment, the air conditioning equipment is internally provided with a condenser (17), and the condenser (17) is arranged in the air exhaust channel (19);
the heat recovery system (13) further comprising a spray device (118), the spray device (118) being located above the condenser (17); the water inlet end of the spraying device (118) is communicated with the water outlet end of the liquid storage component;
the air conditioning equipment is also provided with an evaporator (9) and a water pan (119), and the water pan (119) is arranged below the evaporator (9); the water outlet end of the water pan (119) is communicated with the water inlet end of the liquid storage component; condensed water is collected into the liquid storage assembly through the water receiving disc (119), and then the condenser (17) is cooled through the spraying device (118);
the heat recovery system (13) further comprises:
the water inlet end of the switch assembly is connected with the water outlet end of the liquid storage assembly, the first water outlet end of the switch assembly is connected with the water inlet end of the first heat exchanger (106), and the second water outlet end of the switch assembly is connected with the water inlet end of the second heat exchanger (101);
a first valve (103), wherein one end of the first valve (103) is connected with the water outlet end of the first heat exchanger (106), and the other end of the first valve (103) is connected with the water inlet end of the second heat exchanger (101);
the water outlet end of the second heat exchanger (101) is connected with the water inlet end of the liquid storage assembly;
the heat recovery system (13) further comprises:
a second valve (108), a first end of the second valve (108) is communicated with the water inlet end of the spraying device (118), and a second end of the second valve (108) is communicated with the water outlet end of the liquid storage component;
the stock solution subassembly includes:
a liquid storage tank (112) provided with a first opening (111), a second opening (110) and a third opening; the first opening (111) is communicated with the water outlet end of the water receiving tray (119) through a first pipeline, and the second opening (110) is communicated with the water outlet end of the second heat exchanger (101) through a second pipeline (114);
the water pump (116) is provided with a water pump inlet (109) and a water pump outlet (115), the water pump inlet (109) is inserted into the liquid storage tank (112) from the third opening through a third pipeline, and the water pump outlet (115) is simultaneously communicated with the water inlet end of the switch assembly and the second end of the second valve (108);
further comprising:
the air conditioning equipment is also provided with a compressor (16), and the water pump (116) is in communication connection with the compressor (16);
the temperature and humidity sensor is arranged in the shell (1); the temperature and humidity sensor is in communication connection with the water pump (116); the temperature and humidity sensor is used for detecting the temperature and humidity of the air inlet (23) and the air outlet (11);
the controller (18) is simultaneously in communication connection with the water pump (116), the compressor (16) and the temperature and humidity sensor; acquiring the working mode of the fresh air equipment through the controller (18), and detecting the outdoor fresh air temperature through the temperature and humidity sensor by the controller (18) when the fresh air equipment is in the heating mode;
when the temperature and humidity sensor detects that the fresh air temperature of the air inlet (23) is within a first preset range, if the exhaust temperature of the compressor (16) is higher than a preset temperature, the controller (18) controls the water pump (116) to operate at a first rotating speed; if the exhaust temperature of the compressor (16) is lower than the preset temperature, the controller (18) controls the water pump (116) to operate at a second rotating speed; the first rotational speed is higher than the second rotational speed;
further comprising:
when the temperature and humidity sensor detects that the temperature of fresh air in the air inlet (23) is smaller than the first preset range, the water pump (116) operates at a third rotating speed, and the third rotating speed is higher than the first rotating speed;
when the temperature and humidity sensor detects that the fresh air temperature of the air inlet (23) is larger than the first preset range, the controller (18) detects the relative exhaust humidity of the air suction opening (8) through the temperature and humidity sensor; if the relative humidity of the exhaust air is lower than the preset humidity, the controller (18) controls the water pump (116) not to operate; and if the relative humidity of the exhaust air is greater than or equal to the preset humidity, the controller (18) controls the water pump (116) to operate at the second rotating speed.
2. The fresh air device according to claim 1, wherein the controller (18) controls the temperature and humidity sensor to detect the temperature and humidity sensor once every preset time.
3. The fresh air device as claimed in claim 1 or 2, further comprising:
the working mode of the fresh air equipment is obtained through the controller (18), and when the fresh air equipment is in a refrigeration mode, the controller (18) detects the outdoor fresh air temperature through the temperature and humidity sensor;
when the temperature and humidity sensor detects that the temperature of fresh air in the air inlet (23) is within a second preset range, the second valve (108) is opened, and the controller (18) controls the water pump (116) to operate at the first rotating speed or the second rotating speed;
when the temperature and humidity sensor detects that the fresh air temperature of the air inlet (23) is smaller than the second preset range, the controller (18) controls the water pump (116) not to operate;
when the temperature and humidity sensor detects that the fresh air temperature of the air inlet (23) is larger than the second preset range, the second valve (108) is opened, and the controller (18) controls the water pump (116) to operate at a third rotating speed.
4. The fresh air device as claimed in claim 1 or 2, further comprising:
the first air valve (2) is arranged on the shell (1); the air inlet end of the first air valve (2) is communicated with the air inlet channel (24), and the air outlet end of the first air valve (2) is communicated with the air exhaust channel (19); and along the air inlet direction of the air inlet channel (24), the air inlet end of the first air valve (2) is positioned at the downstream of the second heat exchanger (101), and the air outlet end of the first air valve (2) is positioned between the first heat exchanger (106) and the total heat exchanger (3).
5. The fresh air device as claimed in claim 4, further comprising:
the second air valve (4) is arranged on the shell (1); the air inlet end of the second air valve (4) is communicated with the air exhaust channel (19), and the air outlet end of the second air valve (4) is communicated with the air inlet channel (24); and the air inlet end of the second air valve (4) is positioned between the air suction opening (8) and the total heat exchanger (3), and the air outlet end of the second air valve (4) is positioned at the upstream of the evaporator (9).
CN202111560256.4A 2021-12-20 2021-12-20 Fresh air equipment Active CN114198845B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202149545U (en) * 2011-07-14 2012-02-22 清华大学 Fresh air fan set with heat recovery and humidification functions
CN106288224A (en) * 2016-08-29 2017-01-04 广东工业大学 The antifrost heat recovery system of new wind outside a kind of preheating chamber
CN205878363U (en) * 2016-08-09 2017-01-11 山东华科规划建筑设计有限公司 Heat recovery cooling dehumidification type fresh air processing unit that adjusts temperature
CN108235665A (en) * 2018-02-06 2018-06-29 重庆大学 A kind of field communications equipment room air conditioner condensation spraying system based on rainwater-collecting
CN108731240A (en) * 2018-05-22 2018-11-02 柳州职业技术学院 A kind of air conditioner condensate water recovering economizing air conditioning fresh wind equipment
CN209923620U (en) * 2019-04-16 2020-01-10 珠海格力电器股份有限公司 Heat pump type washing and drying integrated machine and evaporator cleaning device thereof
CN210107629U (en) * 2019-04-12 2020-02-21 中国建筑科学研究院有限公司 Anti-frost heat recovery device
CN210886678U (en) * 2019-07-18 2020-06-30 重庆海尔滚筒洗衣机有限公司 Heat pump clothes dryer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202149545U (en) * 2011-07-14 2012-02-22 清华大学 Fresh air fan set with heat recovery and humidification functions
CN205878363U (en) * 2016-08-09 2017-01-11 山东华科规划建筑设计有限公司 Heat recovery cooling dehumidification type fresh air processing unit that adjusts temperature
CN106288224A (en) * 2016-08-29 2017-01-04 广东工业大学 The antifrost heat recovery system of new wind outside a kind of preheating chamber
CN108235665A (en) * 2018-02-06 2018-06-29 重庆大学 A kind of field communications equipment room air conditioner condensation spraying system based on rainwater-collecting
CN108731240A (en) * 2018-05-22 2018-11-02 柳州职业技术学院 A kind of air conditioner condensate water recovering economizing air conditioning fresh wind equipment
CN210107629U (en) * 2019-04-12 2020-02-21 中国建筑科学研究院有限公司 Anti-frost heat recovery device
CN209923620U (en) * 2019-04-16 2020-01-10 珠海格力电器股份有限公司 Heat pump type washing and drying integrated machine and evaporator cleaning device thereof
CN210886678U (en) * 2019-07-18 2020-06-30 重庆海尔滚筒洗衣机有限公司 Heat pump clothes dryer

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