CN114562766A - Fresh air handling unit and method - Google Patents
Fresh air handling unit and method Download PDFInfo
- Publication number
- CN114562766A CN114562766A CN202210296426.0A CN202210296426A CN114562766A CN 114562766 A CN114562766 A CN 114562766A CN 202210296426 A CN202210296426 A CN 202210296426A CN 114562766 A CN114562766 A CN 114562766A
- Authority
- CN
- China
- Prior art keywords
- air
- fresh air
- coil
- channel
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 45
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 48
- 230000008020 evaporation Effects 0.000 claims description 38
- 238000009833 condensation Methods 0.000 claims description 32
- 230000005494 condensation Effects 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000001954 sterilising effect Effects 0.000 claims description 12
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 33
- 238000000746 purification Methods 0.000 description 21
- 238000011084 recovery Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 238000005367 electrostatic precipitation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2203/00—Devices or apparatus used for air treatment
- F24F2203/02—System or Device comprising a heat pump as a subsystem, e.g. combined with humidification/dehumidification, heating, natural energy or with hybrid system
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention relates to a fresh air handling unit and a method, which comprises a fresh air channel and an exhaust channel, wherein an air mixing channel is arranged between the fresh air channel and the exhaust channel, a first air adjusting valve is arranged on the air mixing channel, the fresh air handling unit further comprises a heat pump system, the heat pump system comprises a condensing coil positioned on the exhaust channel and an evaporating pipe positioned on the fresh air channel, the condensing coil and the evaporating coil are connected with a compressor positioned in the exhaust channel through pipelines, the fresh air handling unit further comprises a heat pipe exchanger, the condensing side of the heat pipe exchanger is positioned in the exhaust channel and at the upstream of the condensing coil, and the evaporating side of the heat pipe exchanger is positioned in the fresh air channel and at the upstream of the evaporating coil.
Description
Technical Field
The invention relates to the technical field of fresh air conditioners, in particular to a fresh air handling unit and a method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, an outer machine of a fresh air conditioning unit is arranged outdoors, and the inventor finds that most of the fresh air unit or the outer machine of the air conditioning unit can not normally work or the working efficiency is greatly reduced under the extremely cold weather of minus 25 ℃ to minus 30 ℃, and the inventor also finds that the existing centralized or semi-centralized air conditioning fresh air unit in the industry does not have a heat recovery module, and realizes the treatment of fresh air load by a coil pipe arranged in the unit, thereby increasing the building energy consumption, further leading an air conditioning system to be complicated, causing the loss of energy consumption and not saving energy. Long-term non-dredging of indoor air, PM2.5 and CO2The concentration is increased, and the indoor air quality and the human health are seriously influenced by formaldehyde and other harmful organic matters emitted by indoor buildings and office supplies.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a fresh air handling unit which can normally work under an extremely cold condition and has low building energy consumption.
In order to achieve the purpose, the invention adopts the following technical scheme
The embodiment of the invention provides a fresh air handling unit which comprises a fresh air channel and an exhaust channel, wherein an air mixing channel is arranged between the fresh air channel and the exhaust channel, a first air adjusting valve is arranged on the air mixing channel, the fresh air handling unit also comprises a heat pump system, the heat pump system comprises a condensing coil pipe positioned on the exhaust channel and an evaporation pipe positioned on the fresh air channel, the condensing coil pipe and the evaporation coil pipe are connected with a compressor positioned in the exhaust channel through pipelines, the fresh air handling unit also comprises a heat pipe exchanger, the condensing side of the heat pipe exchanger is positioned in the exhaust channel and at the upstream of the condensing coil pipe, and the evaporation side of the heat pipe exchanger is positioned in the fresh air channel and at the upstream of the evaporation coil pipe.
Optionally, an exhaust fan and a second adjusting air valve are arranged at the air outlet end of the air exhaust channel.
Optionally, the air inlet end of the exhaust channel is provided with a first purification component.
Optionally, the air outlet end of the fresh air channel is provided with an air feeder, and the air inlet end of the fresh air channel is provided with a third adjusting air valve.
Optionally, the air inlet end of the fresh air channel is provided with a second purification component and a first heating component in sequence according to the air flow direction.
Optionally, the first heating part adopts an electric heater.
Optionally, a sterilization component is further arranged in the fresh air channel, and the sterilization component is located at the upstream position of the evaporation coil.
Optionally, a second heating component and a humidifying component are further arranged in the fresh air channel.
Optionally, the second heating element employs a water heating coil, and the water heating coil is connected to a municipal water supply system.
In a second aspect, an embodiment of the present invention provides a working method for a fresh air conditioning unit, including a cooling mode, a heating mode, and an extremely cold mode;
a cooling mode: fresh air outside the high-temperature chamber flows into the fresh air channel and flows through the evaporation coil, heat is absorbed by a heat exchange medium in the evaporation coil to cool the flowing air, and the cooled air enters the chamber; the indoor low-temperature return air flows through the condensing coil pipe, absorbs the heat emitted by the condensing coil pipe and is discharged outdoors;
heating mode: the low-temperature outdoor fresh air flows through the evaporation coil pipe and then is heated, the heated air enters the room, the indoor high-temperature return air flows through the condensation coil pipe, the heat exchange medium in the condensation coil pipe is heated and enters the evaporation coil pipe, and the indoor high-temperature air absorbs the cold energy dissipated by the condensation coil pipe and then is discharged out of the room;
an extremely cold mode: opening a first adjusting air valve, mixing indoor high-temperature return air with low-temperature fresh air in a fresh air channel, then flowing through an evaporation coil, performing heat exchange with a heat exchange medium in the evaporation coil to raise the temperature, then entering the room, allowing one part of the indoor high-temperature return air to enter the fresh air channel to be mixed with the low-temperature fresh air, allowing the other part of the indoor high-temperature return air to flow through a condensation coil, absorbing the cold energy of the condensation coil, and then discharging the cold energy out of the room.
The invention has the beneficial effects that:
1. the fresh air handling unit is provided with a heat recovery pipe, the evaporation side and the condensation side of the heat pipe heat recovery device are respectively arranged in a fresh air channel and an exhaust channel of the handling unit, a heat transfer medium is injected into the heat pipe, and the energy conversion in the fresh air exhaust channel is realized through the vaporization and liquefaction of the medium; the cold energy in the exhaust air is recovered in summer, the heat in the exhaust air is recovered in winter, the cold energy and the heat in the exhaust air are fully utilized, no energy consumption exists, the wind speed can be reduced through the heat pipe heat exchanger, the energy in the exhaust air is recovered to the maximum degree, the power consumption of a heat pump system is reduced, and further the energy consumption of a building is reduced.
2. According to the fresh air handling unit, the fresh air channel and the exhaust channel can be communicated through the air mixing channel, when the temperature of the external environment is lower than minus 25 ℃, the air mixing channel is opened through the first air regulating valve, so that indoor high-temperature return air enters the fresh air channel and is mixed with outdoor low-temperature fresh air to heat the outdoor low-temperature fresh air, the second heating component is arranged, the outdoor fresh air can be preliminarily heated, the normal work of a heat pump system is guaranteed, and the working efficiency of the heat pump system is improved.
3. According to the fresh air handling unit, the condensing exhaust pipes are positioned in the exhaust channel, the evaporating exhaust pipes are positioned in the fresh air channel under the summer refrigeration working condition, the indoor temperature is low, and the heat dissipation of the air of the condensing coil pipe is fast; the working condition of heating in winter, indoor temperature is high, the evaporating coil heats up fast, compares with outer machine to be in the open air, and compressor operating efficiency is high, energy-conserving power saving.
4. The fresh air handling unit provided by the invention is provided with the first purification part, the second purification part and the sterilization part, so that large particles and bacteria in fresh air are removed, the fresh air provided for buildings is clean and meets the indoor air quality requirement, the threat to the human health can be effectively avoided, and the fresh air handling unit can be used in hospitals, laboratories, chemical plants and other places with purification requirements on exhaust air.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the operation of the cooling mode and the transition mode in embodiment 2 of the present invention;
FIG. 3 is a schematic diagram of the operation of the heating mode and the extreme cold mode in embodiment 2 of the present invention;
FIG. 4 is a schematic view of a sensor arrangement according to embodiment 1 of the present invention;
the system comprises a heat pipe heat exchanger, a first analog quantity air regulating valve, an indoor air return side flange, an active carbon purification device, a second analog quantity air regulating valve, an air conditioner, an indoor air supply side flange, an indoor air filter, an electric heater, an electrostatic dust removal device, an indoor air supply side flange, an indoor air supply side air supply flange, an air supply side air supply device, an air supply device, and an air supply side air supply device.
Detailed Description
Example 1
The embodiment provides a fresh air handling unit, as shown in fig. 1, which comprises a case, wherein the wall of the case is made of double-layer steel plates, 50mm-80mm of polyurethane foam thermal insulation material is filled between the two layers of steel plates, a fresh air channel B and an air exhaust channel a are arranged in the case, the fresh air channel B is used for allowing outdoor fresh air to enter the room, and the air exhaust channel a is used for allowing indoor return air to flow outdoors.
A wind mixing channel C is arranged between the fresh air channel B and the air exhaust channel A, a first adjusting air valve is mounted on the wind mixing channel C, and the air exhaust channel A and the fresh air channel B are communicated through the wind mixing channel C.
The first air adjusting valve adopts a first analog quantity air adjusting valve 17, and the opening degree can be automatically adjusted according to requirements.
The first analog air regulating valve 17 can close the air mixing channel C, so that the phenomena of air leakage and air mixing do not exist in the fresh air channel B and the air exhaust channel A.
The air inlet end of the air exhaust channel A is provided with an indoor air return side flange 6, the air outlet end of the air exhaust channel A is provided with a second adjusting air valve, the second adjusting air valve adopts a second analog quantity adjusting air valve 1, and the opening degree can be automatically adjusted according to requirements.
In the air exhaust channel A, along the flowing direction of indoor return air, a first purification part, a condensation side 3 of the heat pipe heat exchanger, a condensation coil 4 of the heat pump system and an exhaust fan 5 are sequentially arranged, and the exhaust fan 5 is arranged at the air outlet end of the air exhaust channel A.
The connection position of the mixing channel C and the air exhaust channel A is positioned between the first purifying part and the condensation side of the heat pipe heat exchanger.
In this embodiment, the first purification unit is a conventional activated carbon purification device 2, and is suitable for use in places where a purification requirement is imposed on exhaust air, such as hospitals, laboratories, and chemical plants.
The air inlet end of the fresh air channel B is provided with a third adjusting air valve, the third adjusting air valve adopts a third analog quantity air valve 7, and the opening degree can be automatically adjusted according to requirements. And an indoor air supply side flange 16 is arranged at the air outlet end of the fresh air channel B.
In the fresh air channel B, along the flow direction of outdoor fresh air, a second purification part, a first heating part, a sterilization part, an evaporation side 11 of the heat pipe heat exchanger, an evaporation coil 12 of the heat pump system, a second heating part, a humidifying element and a blower are sequentially arranged.
The second purification part adopts the existing air filter 8, the first heating part adopts the existing electric heater 9, and the sterilization part adopts the existing electrostatic dust removal equipment 10, so that the sterilization effect can be achieved.
The heat pipe heat exchanger adopts a three-dimensional heat pipe heat exchanger, and manual conversion in winter and summer is not needed.
The evaporation coil and the condensation coil are both connected with the compressor through pipelines, the compressor in the embodiment adopts a variable frequency scroll compressor 18, the variable frequency scroll compressor 18 is installed in an exhaust channel A, and the temperature in the exhaust channel A is closer to the room temperature, so that the variable frequency scroll compressor 18 can work more favorably.
An electronic expansion valve 21 is arranged on a pipeline between the evaporation coil 12 and the condensation coil 18, and the evaporation coil 12, the condensation coil 18, the electronic expansion valve 21 and the variable-frequency scroll compressor 18 form a heat pump system together.
The second heating part adopts water heating coil 13, and water heating coil 13 and municipal heating system's pipe connection receives external environment influence for a short time, and application range is extensive.
The humidifying element is an existing air humidifier 14.
As shown in fig. 4, still install temperature sensor in the box of this embodiment, it is concrete, first temperature sensor T1 is installed to the air inlet end of new trend passageway B, be used for detecting new trend temperature, second temperature sensor T2 is installed to the air-out end of new trend passageway B, be used for detecting air supply temperature, third temperature sensor T3 is installed to the air inlet end of exhaust passageway a, be used for detecting return air temperature, install fourth temperature sensor T4 between electric heater and the electrostatic precipitator equipment, be used for detecting the new trend temperature after mixing, install fifth temperature sensor between condensing coil and the exhaust fan, be used for detecting the temperature of airing exhaust.
The compressor, the temperature sensor, the electric heater, each analog air regulating valve and the like in the box body are all connected with a controller, and the controller is installed in a control box 19 in the air exhaust channel A.
The air humidifier is provided with a humidity sensor, the humidification quantity is automatically adjusted according to the setting of the controller, the humidification mode can be wet film, steam and spray humidification, and the use requirement can be met.
The fresh air conditioning unit of the embodiment is provided with the heat pipe heat exchanger, energy consumption is avoided, the air speed can be reduced through the heat pipe heat exchanger, energy in exhaust air is recovered to the maximum degree, the power consumption of a heat pump system is reduced, and further the energy consumption of a building is reduced.
Example 2:
the embodiment provides a working method of the fresh air handling unit in embodiment 1, which includes a cooling mode, a heating mode and an extremely cold mode.
The working method of the summer refrigeration mode comprises the following steps:
as shown in fig. 2, the high-temperature outdoor fresh air passes through the third analog quantity regulating valve, enters the fresh air channel B of the box body of the air conditioner of the fresh air handling unit, passes through the air filter and the electric heater (the electric heater does not work in the cooling mode), the air filter filters pollutants such as PM2.5 in the air, then enters the electrostatic precipitation equipment for sterilization, the purified and sterilized fresh air passes through the evaporation side of the heat pipe exchanger, the temperature of the air is higher than that of the heat exchange medium in the heat pipe exchanger at the moment, the air exchanges heat with the heat exchange medium in the heat pipe exchanger to absorb the cold in the return air to lower the temperature of the air, then passes through the evaporation coil, the temperature is lowered again by using the heat exchange medium in the evaporation coil, the cooled fresh air passes through the water heating coil again (the water heating coil does not work in the cooling mode), passes through the air humidifier for humidity regulation, finally, the air blower sends the treated fresh and clean air with proper temperature and humidity into the room; indoor low-temperature dirty air enters an activated carbon purification device (suitable for being used in places with purification requirements on exhaust air in hospitals, laboratories, chemical plants and the like) through an indoor air return side flange, the purified exhaust air flows through a condensation side of a heat pipe heat exchanger, the temperature of the air is lower than that of a heat exchange medium of the heat pipe heat exchanger, the temperature of the air is increased, the air flows through a condensation coil pipe, the temperature is further increased, and finally the purified high-temperature gas is exhausted to the outside through an exhaust fan and a second analog quantity adjusting air valve;
in the cooling mode, the second analog quantity adjusting air valve and the third analog quantity adjusting air valve are opened, and the first analog quantity adjusting air valve is closed.
The working method of the winter heating mode comprises the following steps:
as shown in fig. 3, the low-temperature outdoor fresh air enters the fresh air channel B of the box body through the third analog quantity air regulating valve, the method comprises the following steps that outdoor air is heated to a temperature higher than minus 10 ℃ through an air filter and an electric heater (the electric heater works in a heating mode), PM2.5 and other pollutants in the air are filtered out and then enter electrostatic precipitation equipment for sterilization, purified and sterilized fresh air flows through a condensation side of a heat pipe heat exchanger to absorb heat recovered by a heat exchange medium of the heat pipe heat exchanger, the temperature is raised, the fresh air flows through an evaporation coil and is heated again by the evaporation coil, the heated fresh air flows through a water heating coil (the heating mode works and can be connected with municipal hot water or other heat sources) and flows through an air humidifier for humidity adjustment, and finally, the treated fresh and clean air with appropriate temperature and humidity is sent into a room through a blower; indoor high-temperature dirty air enters an active carbon purification device (suitable for being used in places with purification requirements on exhaust air in hospitals, laboratories, chemical plants and the like) through an indoor return air side flange, the purified exhaust air is subjected to heat recovery through a condensation side of a heat pipe exchanger to transfer heat to fresh air and then flows through a condensation coil, the indoor air subjected to heat recovery carries the cold energy emitted by the condensation coil, and finally the purified low-temperature gas is exhausted to the outside through an exhaust fan and an outdoor exhaust air analog quantity regulating air valve;
in the heating mode, the second analog quantity air regulating valve and the third analog quantity air regulating valve are opened, and the first analog quantity air regulating valve is closed.
Because the condensation exhaust pipe is positioned in the exhaust channel A, the evaporation exhaust pipe is positioned in the fresh air channel B under the summer refrigeration working condition, the indoor air temperature is low, and the heat dissipation of the gas of the condensation coil pipe is fast; the working condition of heating in winter, indoor temperature is high, evaporating coil heaies up fast, compares to outer as to outdoor, and the compressor operating efficiency is high, energy-conserving power saving.
The working method of the extremely cold mode (the outdoor fresh air temperature is lower than minus 25 ℃) comprises the following steps:
as shown in fig. 3, when the fresh air of low temperature outdoor enters into the fresh air channel B of the box body, the fresh air is heated to above-10 ℃ by the air filter and the electric heater (the electric heater works in the extremely cold mode) through the third analog quantity air regulating valve (the opening degree is 0-30%) to reduce the fresh air volume, the fresh air enters into the air mixing channel C after filtering out the pollutants such as PM2.5 in the air, at this time, the first analog quantity air regulating valve is opened, the temperature of the indoor high temperature return air and the outdoor low temperature fresh air is raised after mixing and enters into the electrostatic dust collection device for sterilization, the purified and sterilized fresh air flows into the condensation side of the heat pipe heat exchanger to absorb the heat recovered in the exhaust air, the temperature is raised, then flows through the evaporation coil, the temperature is raised again by the evaporation coil, the heated fresh air flows through the water heating coil (the water heating coil heating mode work, can be connected with municipal hot water or other heat sources), flows through the air humidifier to carry out humidity adjustment, and finally, the air blower sends the treated fresh and clean air with proper temperature and humidity into the room; indoor high-temperature dirty air enters an activated carbon purification device through an indoor return air side flange (the purification device is suitable for being used in places with purification requirements on exhaust air of hospitals, laboratories, chemical plants and the like), one part of purified indoor return air is mixed with outdoor fresh air to improve the temperature of the fresh air and then returns to the room, the other part of purified indoor return air is subjected to heat recovery through a condensation side of a heat pipe exchanger to transfer heat to the fresh air and then flows through a condensation coil pipe, the indoor air after the heat recovery carries out cold energy emitted out through a condenser, and finally the purified low-temperature air is exhausted to the outside through an exhaust fan (the indoor exhaust air is reduced after the frequency is reduced) and a second analog quantity air regulating valve;
and in the extremely cold mode, the second analog quantity air regulating valve is opened, the third analog quantity air regulating valve is opened (the opening degree is 0-30%), and the first analog quantity air regulating valve is opened, wherein the opening degree is determined by the temperature of the mixed fresh air.
Because the condensation calandria is located exhaust channel A, the evaporation calandria is located fresh air channel B, and can communicate through mixing wind channel C between fresh air channel B and the exhaust channel A, when external environment temperature is less than-25 ℃, mix wind channel C and open through first air regulating valve for indoor high temperature return air gets into fresh air channel B, mixes with outdoor low temperature new trend, heaies up outdoor low temperature new trend, has guaranteed heat pump system's normal work, and has improved heat pump system's work efficiency.
The working method of the fresh air handling unit in this embodiment further has a transition mode, specifically:
as shown in fig. 2, in spring and autumn when the indoor and outdoor temperature difference is not large, outdoor fresh air enters the box body through the third analog quantity air regulating valve, passes through the air filter and the electric heater (the transition mode does not work), filters pollutants such as PM2.5 in the air, enters the electrostatic precipitation equipment for sterilization, flows into the evaporation side of the heat pipe heat exchanger (the temperature difference of fresh air exhaust is small, heat recovery is not performed or the heat recovery efficiency is low), then flows into the evaporation coil (the compressor transition mode does not work), then flows through the water heating coil (the refrigeration mode does not work), flows through the air humidifier for humidity adjustment, and finally, the fresh and clean air after being processed is sent into the room through the blower; indoor dirty air enters an active carbon purification device (suitable for being used in places with purification requirements on exhaust air in hospitals, laboratories, chemical plants and the like) through an indoor return air side flange, the purified exhaust air passes through a condensation coil (a compressor is in a transition mode and does not work) after being subjected to heat recovery through a condensation side of a heat pipe heat exchanger, and finally purified air is discharged to the outside through an exhaust fan and a second analog quantity air regulating valve;
and in the transition mode, the second analog quantity air regulating valve and the third analog quantity air regulating valve are opened, and the first analog quantity air regulating valve is closed.
In the cooling mode:
the automatic control system compares and calculates the detected air supply temperature with the set air supply temperature, automatically adjusts the variable frequency compressor, and when the air supply temperature is higher than the set requirement, the compressor performs frequency increase and increases the cold input; when the air supply temperature is lower than the set requirement, the compressor reduces the frequency and reduces the cold input; the humidity is set by combining an air humidifier with an automatic control system to increase or decrease the humidification quantity;
heating mode (outdoor fresh air temperature is higher than-25 ℃):
the second analog quantity air regulating valve and the third analog quantity air regulating valve are opened, the electric heater is opened, the first analog quantity air regulating valve is closed, the automatic control system carries out comparison calculation according to the detected air supply temperature and the set air supply temperature, the analog quantity air regulating valve of the water heating coil is automatically regulated, and when the water valve is fully opened and cannot meet the set requirement, the compressor is opened, the frequency of the compressor is increased, and the heat input is increased; when the temperature reaches, firstly, the compressor is used for reducing the frequency, the machine is stopped, and when the opening degree of the analog quantity regulating valve of the water heating coil is reduced, the humidity is set by combining the humidifier with the search automatic control system to increase or reduce the humidification quantity;
extremely cold mode (outdoor fresh air temperature lower than-25 ℃):
the third analog quantity air adjusting valve is opened, the maximum opening degree is 30%, the second analog quantity air adjusting valve is opened, the electric heater is opened, and the first analog quantity air adjusting valve is opened according to the temperature of the mixed air of the fourth temperature sensor T4; the automatic control system compares and calculates the detected air supply temperature with the set air supply temperature, automatically adjusts the water heating coil analog quantity adjusting valve, and starts the compressor to increase the frequency and increase the heat input when the water valve is fully opened and can not meet the set requirement; when the temperature reaches, firstly, the compressor is used for reducing the frequency, and when the opening degree of the water heating coil analog quantity regulating valve is reduced, the humidity is set by combining the humidifier and the automatic control system to increase or reduce the humidification quantity;
a transition mode;
the second analog quantity air regulating valve and the third analog quantity air regulating valve are opened, the first analog quantity air regulating valve is closed, the heating coil water valve is closed, the compressor is not opened, fresh air is directly purified and then sent into a room, and indoor exhaust air is purified and then directly exhausted to the outside of the room.
The unit is provided with an anti-freezing protection mode when being started, after being started in a heating mode or an extremely cold mode, the unit starts electric heating to preheat the air in the box body, and then starts the air supply and exhaust fan to prevent cold air from being directly supplied into the box body when being started and frost cracking of the coil pipe.
The unit is shut down in winter and is provided with a two-stage anti-freezing protection mode, and after the unit is shut down, the opening degree of a water valve of the heating coil is reserved to ensure that flowing water always exists in the coil; when the temperature in the box body is detected to be lower than a set value, the electric heating can be started, and after the temperature is higher than the set value for a certain time, the electric heating is closed, so that the condition that the temperature in the box body is too low and the coil pipe is frozen and cracked when the unit meets low-temperature weather during shutdown is prevented.
The unit can be operated under multiple working conditions, and the heating mode, the refrigerating mode, the extremely cold mode and the transitional season operation mode have unique energy-saving advantages and are suitable for all the year round;
the wind and cold energy range of the unit is wide, the unit can be used in a large system in a centralized way, and can also be used by a plurality of small systems, so that the unit is suitable for residential buildings and public buildings.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.
Claims (10)
1. The utility model provides a fresh air handling unit, including fresh air channel and exhaust air channel, a serial communication port, be equipped with the mixed wind passageway between fresh air channel and the exhaust air channel, mix the wind channel and install first regulation blast gate, still include heat pump system, heat pump system is including the condenser coil who is located exhaust air channel and the evaporation calandria who is located fresh air channel, condenser coil and evaporation coil pass through the pipeline and are connected with the compressor that is located exhaust air channel, still include heat pipe exchanger, heat pipe exchanger's condensation side is located inside the exhaust air channel, and be located condenser coil's upper reaches, heat pipe exchanger's evaporation side is located fresh air channel inside and is located evaporation coil's upper reaches.
2. The fresh air handling unit according to claim 1, wherein an exhaust fan and a second damper are disposed at an air outlet end of the exhaust duct.
3. The fresh air handling unit as claimed in claim 1, wherein the air inlet end of the air exhaust channel is provided with a first purifying member.
4. The fresh air handling unit as claimed in claim 1, wherein the air outlet end of the fresh air channel is provided with a blower, and the air inlet end of the fresh air channel is provided with a third adjusting air valve.
5. The fresh air conditioning unit as claimed in claim 1, wherein the air inlet end of the fresh air channel is provided with a second purifying part and a first heating part in sequence according to the air flow direction.
6. The fresh air handling unit as claimed in claim 5, wherein the first heating member is an electric heater.
7. The fresh air handling unit as claimed in claim 1, wherein a sterilization unit is further disposed in the fresh air channel, and the sterilization unit is located upstream of the evaporator coil.
8. The fresh air handling unit as claimed in claim 1, wherein a second heating element and a humidifying element are further disposed in the fresh air channel.
9. The fresh air handling unit of claim 8 wherein the second heating element is a water heating coil, the water heating coil being connected to a municipal water supply.
10. A method of operating a fresh air handling unit as claimed in any of claims 1 to 9, comprising a cooling mode, a heating mode and an extreme cold mode;
a refrigeration mode: fresh air outside the high-temperature chamber flows into the fresh air channel and flows through the evaporation coil, heat is absorbed by a heat exchange medium in the evaporation coil to cool the flowing air, and the cooled air enters the chamber; the indoor low-temperature return air flows through the condensing coil pipe, absorbs the heat emitted by the condensing coil pipe and is discharged outdoors;
heating mode: the low-temperature outdoor fresh air flows through the evaporation coil pipe and then is heated, the heated air enters the room, the indoor high-temperature return air flows through the condensation coil pipe, the heat exchange medium in the condensation coil pipe is heated and enters the evaporation coil pipe, and the indoor high-temperature air absorbs the cold energy dissipated by the condensation coil pipe and then is discharged out of the room;
an extremely cold mode: opening a first adjusting air valve, mixing indoor high-temperature return air with low-temperature fresh air in a fresh air channel, then flowing through an evaporation coil, performing heat exchange with a heat exchange medium in the evaporation coil to raise the temperature, then entering the room, allowing one part of the indoor high-temperature return air to enter the fresh air channel to be mixed with the low-temperature fresh air, allowing the other part of the indoor high-temperature return air to flow through a condensation coil, absorbing the cold energy of the condensation coil, and then discharging the cold energy out of the room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210296426.0A CN114562766A (en) | 2022-03-24 | 2022-03-24 | Fresh air handling unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210296426.0A CN114562766A (en) | 2022-03-24 | 2022-03-24 | Fresh air handling unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114562766A true CN114562766A (en) | 2022-05-31 |
Family
ID=81718815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210296426.0A Pending CN114562766A (en) | 2022-03-24 | 2022-03-24 | Fresh air handling unit and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114562766A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095926A (en) * | 2022-07-25 | 2022-09-23 | 珠海格力电器股份有限公司 | Air conditioning apparatus and control method of air conditioning apparatus |
| CN115978781A (en) * | 2023-01-10 | 2023-04-18 | 中南建筑设计院股份有限公司 | Air conditioning unit capable of reheating by using buffer water tank |
| CN115986273A (en) * | 2023-03-21 | 2023-04-18 | 北京中矿赛力贝特节能科技有限公司 | Heat pipe type ventilation and heat exchange device for energy storage battery container |
| CN116026029A (en) * | 2023-01-10 | 2023-04-28 | 中南建筑设计院股份有限公司 | Two-stage heat recovery purifying unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201285125Y (en) * | 2008-09-28 | 2009-08-05 | 西安工程大学 | Heat pipe and heat pump combined vaporization cooling air-conditioning unit |
| CN104266277A (en) * | 2014-10-21 | 2015-01-07 | 东南大学 | Heat pipe heat recovery all fresh air dehumidification air-conditioning device |
| CN204227618U (en) * | 2014-11-19 | 2015-03-25 | 贝莱特空调有限公司 | A kind of economic benefits and social benefits heat pipe-type heat recovery energy-saving fresh air handining unit |
| KR102077462B1 (en) * | 2019-01-17 | 2020-02-14 | (주)미래비엠 | Apparatus for air conditioning |
-
2022
- 2022-03-24 CN CN202210296426.0A patent/CN114562766A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201285125Y (en) * | 2008-09-28 | 2009-08-05 | 西安工程大学 | Heat pipe and heat pump combined vaporization cooling air-conditioning unit |
| CN104266277A (en) * | 2014-10-21 | 2015-01-07 | 东南大学 | Heat pipe heat recovery all fresh air dehumidification air-conditioning device |
| CN204227618U (en) * | 2014-11-19 | 2015-03-25 | 贝莱特空调有限公司 | A kind of economic benefits and social benefits heat pipe-type heat recovery energy-saving fresh air handining unit |
| KR102077462B1 (en) * | 2019-01-17 | 2020-02-14 | (주)미래비엠 | Apparatus for air conditioning |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095926A (en) * | 2022-07-25 | 2022-09-23 | 珠海格力电器股份有限公司 | Air conditioning apparatus and control method of air conditioning apparatus |
| CN115978781A (en) * | 2023-01-10 | 2023-04-18 | 中南建筑设计院股份有限公司 | Air conditioning unit capable of reheating by using buffer water tank |
| CN116026029A (en) * | 2023-01-10 | 2023-04-28 | 中南建筑设计院股份有限公司 | Two-stage heat recovery purifying unit |
| CN115986273A (en) * | 2023-03-21 | 2023-04-18 | 北京中矿赛力贝特节能科技有限公司 | Heat pipe type ventilation and heat exchange device for energy storage battery container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106524317B (en) | Quality-divided heat recovery refrigerant supercooling reheating air conditioner and air treatment method thereof | |
| CN106705224B (en) | Multi-level heat recovery combined air processor and air processing method thereof | |
| CN101790667B (en) | Air conditioning/ventilating system | |
| CN114562766A (en) | Fresh air handling unit and method | |
| CN102425828B (en) | Energy saving device suitable for accurate control air conditioner in machine room | |
| CN201731575U (en) | Energy-saving and environment-friendly clean air conditioning system | |
| CN103574812A (en) | Straight ventilating machine room air-conditioning system and control method thereof | |
| CN206234930U (en) | A kind of warm and humid sub-control Fresh air handling units based on high temperature chilled water | |
| CN211041202U (en) | Fresh air humidifying unit with double cold and heat sources | |
| CN1963326A (en) | Energy utilization and recovery type cell full air air-condition set | |
| CN201225722Y (en) | Combined air-conditioner plant unit with bypass air dust | |
| CN205717538U (en) | Mixed ventilation heating air conditioning equipment | |
| CN113137672B (en) | Air conditioning system | |
| CN203642338U (en) | Double-cold-source combination type fresh air handling unit | |
| CN110454880A (en) | Xeothermic severe cold cold climate area's whole year is with Fresh air handing air-conditioner set and application method | |
| CN206369270U (en) | Heat air conditioner again is subcooled in a kind of sub-prime recuperation of heat cryogen | |
| CN108644941B (en) | Heat recovery type split air conditioner combining fresh air purification and mechanical refrigeration | |
| CN111928408A (en) | Heat pipe waste heat recovery and reheating fresh air system | |
| CN109827311A (en) | A kind of full room health comfort air management system of variable air rate | |
| CN209588310U (en) | A kind of full room health comfort air management system of variable air rate | |
| CN112361477A (en) | Clean windless air conditioning system of soil source heat pump special for villa | |
| CN209415686U (en) | A kind of fresh air conditioner system suitable for passive type pole low energy-consumption house | |
| CN111520857A (en) | Double-working-condition fresh air dehumidifying and temperature adjusting processing device | |
| CN108317650B (en) | Multi-connected air conditioner heat pump system with independent fresh air | |
| CN111442449A (en) | Double-fan combined air conditioning unit with independent cold source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 16, Beicheng Industrial Park, Qudi Street, Jiyang District, Jinan, Shandong 251412 Applicant after: SHANDONG MENO-BONMA ENERGY SAVING TECHNOLOGY Co.,Ltd. Address before: 251412 No. 16, Beicheng Industrial Park, Qudi Town, Jiyang County, Jinan City, Shandong Province Applicant before: SHANDONG MENO-BONMA ENERGY SAVING TECHNOLOGY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220531 |