CN110925889A - Clean new trend processing system of many return strokes - Google Patents
Clean new trend processing system of many return strokes Download PDFInfo
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- CN110925889A CN110925889A CN201911232787.3A CN201911232787A CN110925889A CN 110925889 A CN110925889 A CN 110925889A CN 201911232787 A CN201911232787 A CN 201911232787A CN 110925889 A CN110925889 A CN 110925889A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0087—Indoor units, e.g. fan coil units with humidification means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—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
- F24F11/84—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 valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F7/065—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 fan combined with single duct; mounting arrangements of a fan in a duct
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention discloses a multi-return-stroke clean fresh air processing system which comprises a cavity body provided with a fresh air inlet and a fresh air outlet, wherein a first air channel, a second air channel, a third air channel and a fourth air channel which are communicated with each other are sequentially arranged in the cavity body according to the ventilation direction. The invention changes the existing single-return linear arrangement into multi-return three-dimensional arrangement, and adopts an internal shortcut communication mode so as to bypass some processes and realize process simplification and optimized combination. The invention further improves the parameter stability of the humidity, the temperature, the cleanliness and the pressure difference of the clean fresh air, is more reliable in freezing prevention, improves the comprehensive efficiency, optimizes the process flow, has obvious energy-saving and environment-friendly effects, reduces the volume of related machines, has better manufacturability in production and installation and stronger product adaptability, expands the application field of the technology, is beneficial to developing the market and increases the benefit.
Description
Technical Field
The invention relates to a multi-return-stroke clean fresh air processing system.
Background
At present, for hospitals, purification operating rooms and ICU wards are energy-consuming households, according to statistics, the power consumption of the purification operating rooms usually occupies over 1/3 of the power consumption of the hospitals, mainly because the purification air-conditioning system of the operating department is high-energy-consumption equipment, the coordination control of the purification operating rooms in the aspects of winter freezing prevention, summer dehumidification, system wind resistance, cleanliness, constant pressure difference and the like is always the key point and the difficulty of the purification air-conditioning system in controlling the energy consumption, and is also the main reason of high energy consumption of the purification air-conditioning system of the operating department, and especially in coastal areas, the humidity pressure difference of the operating rooms and the ICU wards is a common phenomenon of out-of-control;
an existing fresh air processing system of a purification air-conditioning system is shown in figure 1, and outdoor fresh air passes through an air inlet section a, an anti-freezing section b, a primary effect section c, a middle effect section d, a fan section e, a flow equalizing section f, a temperature reduction section g, a direct expansion section h, a heating section i, a humidification section j, a high efficiency section k and an air outlet section i to become clean fresh air with certain flow and pressure meeting the requirements of temperature, humidity and cleanliness, and then enters a purification cycle unit and is conveyed to a clean room.
However, the design is designed according to the most adverse meteorological conditions, so that the whole fresh air processing system has the defects of long process flow, various devices, large occupied space, high energy consumption, unstable air volume and pressure and the like, and the normal operation of the system is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a multi-return clean fresh air processing system which can further improve the control stability of the humidity, the temperature, the cleanliness and the pressure difference of clean fresh air, is more reliable in freezing prevention, improves the comprehensive efficiency, optimizes the process flow, reduces the volume of related machines, and has better production and installation manufacturability and stronger product adaptability.
The invention can be solved by the following technical scheme:
a multi-return clean fresh air processing system comprises a cavity body provided with a fresh air inlet and a fresh air outlet, wherein a plurality of air channels which are communicated with each other are sequentially arranged in the cavity body according to a ventilation direction, the air channels are three-dimensionally designed, necessary function groups are arranged in the air channels according to a process sequence, and are sequentially a primary-intermediate-efficiency filtering group, a fan group and a high-efficiency filtering group, the multi-return clean fresh air processing system also comprises a plurality of selectable function groups which are sequentially an anti-freezing group, a cooling and dehumidifying group and a heating and humidifying group, and main path circulation or shortcut circulation is realized between the necessary function groups and the selectable function groups through electric air valves.
When the main path circulation between the necessary function group and the anti-freezing group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, an anti-freezing group and a high-efficiency filtering group; when the main path circulation between the necessary function group and the cooling and dehumidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, a cooling and dehumidifying group and a high-efficiency filtering group; when the main path circulation between the necessary function group and the heating and humidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, a heating and humidifying group and a high-efficiency filtering group; when the main path circulation among the necessary function group, the anti-freezing group and the heating and humidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by the primary-middle-effect filtering group, the fan group, the anti-freezing group, the heating and humidifying group and the high-efficiency filtering group.
The cold energy reuse heat exchanger is divided into an upper end and a lower end, the lower end is a cold discharge end arranged at the upstream of the cooling and dehumidifying group, the upper end is a cold absorption end arranged at the downstream of the cooling and dehumidifying group, the cold energy reuse heat exchanger is a heat pipe heat exchanger or a common tube heat exchanger or a finned tube heat exchanger or a plate heat exchanger, hot air is not in contact with cold air, heat exchange is carried out through the wall surface of a metal pipe or a medium, one strand of hot fluid is cooled, and the other strand of cold fluid is heated.
Wherein the medium may be water, ammonia or a refrigerant.
The air ducts are a first air duct, a second air duct, a third air duct and a fourth air duct; the first air duct is communicated with the fresh air inlet, and is provided with the primary and intermediate-effect filtering group and the fan group which are a primary filter, an intermediate-effect filter and a fan in sequence; second wind channel, third wind channel setting prevent frostbite group and cooling dehumidification group, wherein the second wind channel is in proper order for preventing frostbite pre-heater and surface cooler, and the third wind channel sets gradually directly expands machine and humidifier, the end setting of putting cold of cold energy multiplex heat exchanger is in the surface cooler upper reaches, and the cold end setting of inhaling is in directly expand quick-witted low reaches, promptly cold energy multiplex heat exchanger sets up in adjacent second, third wind channel, and the fourth wind channel sets gradually heater and high efficiency filter, and communicates the new trend export.
Wherein, one of the electric air valves is arranged in the second air duct behind the anti-freezing preheater, and opens or closes the shortcut passage between the first air duct and the second air duct; the other electric air valve is arranged in the third air duct in front of the humidifier and opens or closes a short-cut passage between the second air duct and the third air duct; and the other electric air valve is arranged in the fourth air duct and is used for opening or closing a short-cut passage between the third air duct and the fourth air duct after the heater is arranged in the fourth air duct.
The cavity is designed to be a cuboid, the first air duct, the second air duct, the third air duct and the fourth air duct are uniformly arranged in the cavity, and the necessary function group and the optional function group are all designed to be inclined.
The first air duct, the second air duct, the third air duct and the fourth air duct are characterized in that adjacent air ducts are separated by inner partition plates, and each inner partition plate is fixed by a frame.
Wherein the necessary functional group and the optional functional group are fixed on the cavity or the inner partition plate through riveting or self-tapping threads.
The inner partition plate is a galvanized steel plate, an aluminum-zinc-plated steel plate, a stainless steel plate or an aluminum alloy plate.
Advantageous effects
1. The invention optimizes the process, the existing single-return linear arrangement is converted into multi-return three-dimensional arrangement, an internal shortcut communication mode is adopted, certain processes are bypassed, and the process simplification and the optimized combination are realized;
2. the space is optimized, on the premise of not influencing the technological performance of the component, the structural form (for example, a plane structure is changed into a curved surface structure) and the installation direction (for example, the structure is changed into a structure which is perpendicular to the wind flow and is inclined at a certain angle with the wind flow) of the functional component are optimized and adjusted, the occupied space of the component is reduced, the occupied space of the whole system is smaller, and convenience is provided for the installation and maintenance of the system;
3. the cold energy is reused, and a cold energy recovery device is added in the dehumidification process, so that the low-temperature cold energy generated by the direct expansion machine is reused as the energy for precooling fresh air;
4. the wind resistance is reduced, the using states and the frequency of the components for freezing prevention, cooling, dehumidification, humidification, heating and cold energy reuse under different meteorological conditions are greatly different, and certain components are bypassed by the opening and closing functions of the electric air valve, so that the wind resistance is reduced, the energy consumption of a fan is reduced, the service life of the components is prolonged, and the utility of the whole fresh air treatment system is improved.
Drawings
FIG. 1 is a schematic view of a conventional fresh air treatment process
FIG. 2 is a schematic structural diagram of the present invention
FIG. 3 is a process diagram of the present invention
In the drawings
1, a fresh air inlet; 2, an air valve; 3, a primary filter; 4, surface cooling; 5, a medium-efficiency filter;
6, a cold energy reuse heat exchanger; 7, a fan; 8, an electric air valve; 9, an antifreezing preheater; 10, a cavity;
11, a humidifier; 12, a heater; 13, an inner partition plate; 14, a core frame; 15, a direct expansion machine;
16, a high efficiency filter; 17, a fresh air outlet; 18, a housing; 19, and directly expanding the outdoor part of the machine.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification.
As shown in fig. 2 and 3, the multi-return clean fresh air processing system of the present invention comprises a chamber 10 having a fresh air inlet and a fresh air outlet, wherein a plurality of air ducts communicated with each other are sequentially arranged in the chamber 10 according to a ventilation direction, the air flue is internally provided with necessary function groups according to the process sequence, a primary-medium-efficiency filtering group, a fan group and a high-efficiency filtering group in turn, and also comprises a plurality of selectable function groups, an anti-freezing group, a cooling and dehumidifying group and a heating and humidifying group in turn, and the main path circulation or the shortcut circulation is realized between the necessary function groups and the selectable function groups through an electric air valve, namely, according to the requirements of the fresh air processing technology, fresh air can be processed through necessary function groups, and the necessary function groups and at least one group of optional function groups can be selected for processing.
When the electric air valve is closed, the corresponding selectable function group is in a main path circulation state, fresh air can be processed through the selectable function group, when the electric air valve is opened, the corresponding selectable function group is in a shortcut circulation state, only a very small amount of fresh air passes through the selectable function group, and at the moment, the cold and heat sources of the selectable function group do not provide energy (the automatic control valve of the cold and heat sources is closed).
In the embodiment, the first air duct is communicated with a fresh air inlet 1 (an air valve 2 is arranged at the inlet), and a primary-intermediate-efficiency filter group and a fan group are arranged, namely a primary-intermediate-efficiency filter 3, an intermediate-efficiency filter 5 and a fan 7 in sequence; the second air duct and the third air duct are provided with an anti-freezing group and a cooling and dehumidifying group, wherein the second air duct is sequentially provided with an anti-freezing preheater 9 and a surface cooler 4, the third air duct is sequentially provided with a direct expansion machine 15 (19 is an outdoor part of the direct expansion machine in the figure) and a humidifier 11, one end of the cold energy multiplexing heat exchanger 6 is arranged at the upstream of the surface cooler 4, the other end of the cold energy multiplexing heat exchanger is arranged at the downstream of the direct expansion machine 15, namely, the cold energy multiplexing heat exchanger 6 is arranged in the adjacent second and third air ducts, the fourth air duct is sequentially provided with a heater 12 and a high-efficiency filter 16 and communicated with a fresh air outlet 17 (an outlet.
Wherein, an electric air valve 8 is arranged in the second air duct after the anti-freezing preheater 9, and opens or closes the short-cut passage between the first air duct and the second air duct; another electric air valve 8 is arranged in front of a humidifier 11 in the third air duct, and opens or closes a short-cut passage between the second air duct and the third air duct; and the electric air valve 8 is arranged in the fourth air duct after the heater 11, and opens or closes the shortcut passage between the third air duct and the fourth air duct.
When the main path circulation is realized between the necessary function group and the anti-freezing group through the electric air valve (other selectable function groups are in a shortcut circulation state), the electric air valve 8 arranged behind the anti-freezing preheater 9 in the second air duct is in a closed state, the other two electric air valves are in an open state, the shortcut passage between the first air duct and the second air duct is closed, the shortcut passage between the second air duct or the third air duct and the shortcut passage between the third air duct or the fourth air duct are opened, and the fresh air is discharged through a fresh air outlet after being sequentially processed by the primary intermediate-efficiency filtering group, the fan group, the anti-freezing group and the high-efficiency filtering group;
when main path circulation is realized between the necessary function group and the cooling and dehumidifying group through the electric air valve (other selectable function groups are in a shortcut circulation state), the electric air valve 8 arranged in front of the humidifier 11 in the third air duct is in a closed state, the other two electric air valves are in an open state, a shortcut passage between the first air duct and the second air duct is opened, the second air duct or the shortcut passage between the third air duct is closed, the shortcut passage between the third air duct or the fourth air duct is also in an open state, fresh air is discharged through a fresh air outlet after being sequentially processed by the primary intermediate effect filtering group, the fan group, the cooling and dehumidifying group and the high-efficiency filtering group, and only a very small amount of fresh air passes through the anti-freezing group and the heating and humidifying group under the condition;
when the main path circulation is realized between the necessary function group and the heating and humidifying group through the electric air valve (other optional function groups are in a shortcut circulation state), at the moment, the electric air valve 8 of the heater 11 in the fourth air duct is in a closed state, the other two electric air valves are in an open state, a shortcut passage between the first air duct and the second air duct and a shortcut passage between the second air duct or the third air duct are opened, the shortcut passage between the third air duct or the fourth air duct are closed, and fresh air is discharged through a fresh air outlet after being sequentially processed by the primary intermediate-efficiency filtering group, the fan group, the heating and humidifying group and the high-efficiency filtering group;
when the main path circulation among the necessary function group, the anti-freezing group and the heating and humidifying group is realized through the electric air valve (the cooling and dehumidifying group is in a shortcut circulation state), at the moment, the electric air valve 8 arranged behind the anti-freezing preheater 9 in the second air duct and the electric air valve 8 arranged behind the heater 11 in the fourth air duct are in a closed state, other electric air valves are in an open state, the shortcut passage between the first air duct and the second air duct is closed, the shortcut passage between the second air duct or the third air duct is opened, the shortcut passage between the third air duct or the fourth air duct is closed, the fresh air is discharged through a fresh air outlet after being sequentially processed by the primary intermediate effect filtering group, the fan group, the anti-freezing group, the heating and humidifying group and the efficient filtering group, and in this case, only a very small amount of fresh air passes through the cooling and dehumidifying group.
In this embodiment, the cold energy reuse heat exchanger 6 is further provided, and is divided into an upper end and a lower end by the inner partition plate, one end (the cooling end) of the cold energy reuse heat exchanger is arranged at the upstream of the cooling and dehumidifying unit, the other end (the suction end) of the cold energy reuse heat exchanger is arranged at the downstream of the cooling and dehumidifying unit, specifically, the cooling end is arranged at the upstream of the surface cooler 4, the suction end is arranged at the downstream of the direct expansion machine 15, which is a heat pipe heat exchanger or a common tube array heat exchanger or a finned tube array heat exchanger, hot air and cold air are not in contact, heat exchange is performed through a wall surface of a metal pipe or a medium, one fluid with relatively high temperature is cooled. The medium can be water, ammonia or refrigerant, and can realize gas-liquid conversion under normal pressure (-0.05MPa to 1.0 MPa) and normal temperature (-20 ℃ to 50 ℃). After the process flow with the structure is adopted, when the air conditioner runs in summer, the cooling capacity recovery process of the cooling and dehumidifying function group is more convenient and efficient, the cold energy multiplexing heat exchanger 6 is placed in the adjacent air channel, low-temperature air (about 10 ℃) after deep refrigeration and dehumidification enters outdoor fresh air of the cavity through the heat exchanger precooling with higher temperature, the cooling load born by the cooling and dehumidifying component can be greatly reduced, and a large amount of energy is saved in a mode of recycling the cooling capacity. The specific working process is that outdoor fresh air enters a fresh air duct through an air inlet flange, is filtered by a primary and intermediate efficiency filter, flows through a cold discharge end of a cold energy multiplexing heat exchanger 6, is precooled, and is reduced in temperature and moisture content; then flows through the surface air cooler 4, the temperature of the air flow is further reduced, the moisture content is also reduced, then the air flow is deeply refrigerated through the direct expansion machine 15, the temperature is reduced, the humidity is reduced to meet the system requirement, then flows through the cold energy multiplexing heat exchanger 6 at the cold absorption end, and the temperature of the heated air flow is raised and sent out.
Taking the case that the main path circulation is realized between the necessary function group and the cooling and dehumidifying group through the electric air valve (other optional function groups are in a shortcut circulation state), the working process of the invention is as follows:
when the fan 7 is running, the fresh air is in a state A (for example, the dry bulb temperature is 33 ℃ and the relative humidity is 80%), under the driving of the fan, dust particles in the fresh air are filtered by the primary and secondary filter, flow through the cooling end of the cold energy multiplexing heat exchanger 6, and are pre-cooled to a state B (for example, the temperature is 28 ℃ and the relative humidity is 95%), then the airflow passes through the surface air cooler 4, is cooled to a state C (for example, the temperature is reduced to 18 ℃ and the relative humidity is 95%), then passes through the direct expansion machine 15, is cooled to a state D (for example, the temperature is reduced to 11 ℃ and the relative humidity is 100%), most of water vapor in the air is condensed to form condensed water which flows out, finally the airflow passes through the upper end of the cold energy multiplexing heat exchanger 6, the temperature of the air flow is raised to a state E (for example, the temperature is 23.5 ℃ and the relative humidity is 45%), and then the air flow is filtered by the high-efficiency filter 16 and then is sent out. Because the moisture content of the fresh air is large, part of water vapor is condensed into water after passing through the cold energy reuse heat exchanger 6, the temperature drop is small, part of water vapor is condensed into water after passing through the surface air cooler 4 and the direct expansion machine 15 and is discharged, the moisture content of the air is greatly reduced, and the temperature rise is relatively large after the fresh air precools the fresh air at the inlet.
In this embodiment, the cavity is designed as a rectangular parallelepiped, the first air duct, the second air duct, the third air duct and the fourth air duct are uniformly arranged in the cavity, and the necessary function group and the optional function group are all designed to be inclined, that is, the windward planes of the components in all the necessary function groups and the optional function groups are not perpendicular to the air flowing direction, but are inclined at a certain angle, so that the processing device with the same air volume and the same function only needs a smaller air duct cross section, and the volume of the whole cavity can be made smaller.
In the embodiment, adjacent air channels of the first air channel, the second air channel, the third air channel and the fourth air channel are separated by the inner partition plates 13, each inner partition plate 13 is fixed by the frame 14, and the frame is formed by connecting aluminum alloy or aluminum profile or carbon steel or stainless steel profile; the necessary functional group and the optional functional group are fixed on the cavity or the inner partition plate 13 through riveting or self-tapping threads; the inner partition plate 13 is a galvanized steel plate, an aluminum-zinc plated steel plate, a stainless steel plate or an aluminum alloy plate. The outer wall of the chamber is a housing 18.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A multi-return clean fresh air processing system is characterized by comprising a cavity body provided with a fresh air inlet and a fresh air outlet, wherein a plurality of air channels which are communicated with each other are sequentially arranged in the cavity body according to a ventilation direction, the air channels are three-dimensionally designed, necessary function groups are arranged in the air channels according to a process sequence and sequentially comprise a primary-medium-efficiency filtering group, a fan group and a high-efficiency filtering group, the multi-return clean fresh air processing system further comprises a plurality of selectable function groups which are sequentially an anti-freezing group, a cooling and dehumidifying group and a heating and humidifying group, and shortcut circulation or main path circulation is realized between the necessary function groups and the selectable function groups through electric air valves.
2. The clean fresh air processing system of claim 1,
when the main path circulation between the necessary function group and the anti-freezing group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, an anti-freezing group and a high-efficiency filtering group;
when the main path circulation between the necessary function group and the cooling and dehumidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, a cooling and dehumidifying group and a high-efficiency filtering group;
when the main path circulation between the necessary function group and the heating and humidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by a primary medium-efficiency filtering group, a fan group, a heating and humidifying group and a high-efficiency filtering group;
when the main path circulation among the necessary function group, the anti-freezing group and the heating and humidifying group is realized through an electric air valve, the fresh air is discharged through a fresh air outlet after being sequentially processed by the primary-middle-effect filtering group, the fan group, the anti-freezing group, the heating and humidifying group and the high-efficiency filtering group.
3. The multi-return clean fresh air processing system according to claim 1 or 2, further comprising a cold energy reuse heat exchanger which is divided into an upper end and a lower end, wherein the lower end is a cold discharge end arranged at the upstream of the cooling and dehumidifying unit, the upper end is a cold absorption end arranged at the downstream of the cooling and dehumidifying unit, the cold energy reuse heat exchanger is a heat pipe heat exchanger or a common tube heat exchanger or a finned tube heat exchanger or a plate heat exchanger, hot air and cold air are not in contact, heat exchange is carried out through the wall surface of a metal pipe, a fin or a medium, one stream of hotter fluid is cooled, and the other stream of colder fluid is heated.
4. The clean fresh air treatment system of claim 3, wherein the medium is water, ammonia or refrigerant.
5. The clean fresh air processing system with multiple return strokes as claimed in claim 3, wherein the air ducts are a first air duct, a second air duct, a third air duct and a fourth air duct; wherein
The first air duct is communicated with the fresh air inlet, and is provided with the primary and intermediate-effect filtering group and the fan group which are a primary filter, an intermediate-effect filter and a fan in sequence;
the second air duct and the third air duct are provided with the anti-freezing group and the cooling and dehumidifying group, wherein the second air duct is sequentially provided with an anti-freezing preheater and a surface cooler, the third air duct is sequentially provided with a direct expansion machine and a humidifier, the cold discharging end of the cold energy multiplexing heat exchanger is arranged at the upstream of the surface cooler, the cold absorbing end is arranged at the downstream of the direct expansion machine, namely the cold energy multiplexing heat exchanger is arranged in the adjacent second air duct and the third air duct,
the fourth air channel is sequentially provided with a heater and a high-efficiency filter and communicated with the fresh air outlet.
6. The multi-return clean fresh air processing system as claimed in claim 5, wherein an electric air valve is arranged in the second air duct after the anti-freezing preheater, and the electric air valve opens or closes a short-cut path between the first air duct and the second air duct;
the other electric air valve is arranged in the third air duct in front of the humidifier and opens or closes a short-cut passage between the second air duct and the third air duct;
and the other electric air valve is arranged in the fourth air duct and is used for opening or closing a short-cut passage between the third air duct and the fourth air duct after the heater is arranged in the fourth air duct.
7. The clean fresh air processing system of claim 6, wherein the cavity is of a cuboid design, the first air duct, the second air duct, the third air duct and the fourth air duct are uniformly arranged in the cavity, and the necessary function group and the optional function group are of an inclined design.
8. The clean fresh air processing system with multiple return strokes of claim 7, wherein adjacent air channels of the first air channel, the second air channel, the third air channel and the fourth air channel are separated by inner partition plates, and each inner partition plate is fixed by a frame.
9. The clean fresh air processing system with multiple return strokes of claim 8, wherein the necessary functional groups and the optional functional groups are fixed on the cavity or the inner partition plate through riveting or self-tapping threads.
10. The clean fresh air treatment system with multiple return strokes as claimed in claim 9, wherein the inner partition plate is a galvanized steel plate, an aluminum-zinc-plated steel plate, a stainless steel plate or an aluminum alloy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232787.3A CN110925889A (en) | 2019-12-05 | 2019-12-05 | Clean new trend processing system of many return strokes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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