CN107143945B - Combined control of temperature and CO2Multi-air-duct constant-humidity fresh air machine and working method thereof - Google Patents

Combined control of temperature and CO2Multi-air-duct constant-humidity fresh air machine and working method thereof Download PDF

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Publication number
CN107143945B
CN107143945B CN201710337864.6A CN201710337864A CN107143945B CN 107143945 B CN107143945 B CN 107143945B CN 201710337864 A CN201710337864 A CN 201710337864A CN 107143945 B CN107143945 B CN 107143945B
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China
Prior art keywords
air
heat exchanger
fresh air
fan
fresh
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CN201710337864.6A
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Chinese (zh)
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CN107143945A (en
Inventor
郭珊
刘�文
周伟煜
卢雅林
吴兴
张伦
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东南大学
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Publication of CN107143945A publication Critical patent/CN107143945A/en
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Publication of CN107143945B publication Critical patent/CN107143945B/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures
    • F24F7/04Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also by double walls; with natural circulation
    • F24F7/06Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/16Air-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
    • F24F3/1603Air-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 by filtering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-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
    • F24F3/12Air-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
    • F24F3/16Air-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
    • F24F3/166Air-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 using electric means, e.g. applying electrostatic field
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00Air-humidification, e.g. cooling by humidification
    • F24F6/12Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00Air-humidification, e.g. cooling by humidification
    • F24F6/12Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
    • F24F2006/146Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles using pressurised water for spraying
    • Y02A50/21

Abstract

The invention discloses a method for jointly controlling temperature and CO2The multi-air-channel constant-humidity fresh air fan and the working method thereof are characterized in that a fresh air inlet, a return air inlet, an air supply outlet and an air exhaust outlet are arranged on the fresh air fan, and a double-layer air channel, a total heat exchanger, an air processing block, an air exhaust processing block and a fan are arranged in the fresh air fan; the invention is based on outdoor gas phase conditions and temperature sensor, CO2Indoor air data measured by a concentration sensor comprises five working modes in the running time of the whole year: a winter fresh air mode, a summer return air internal circulation mode, a natural ventilation mode and a standby mode; the invention adopts the design of the upper and lower double-layer air channels, ensures that the fresh air and the return air which are sent into the room are subjected to total heat exchange in the upper air channel only in the fresh air mode in winter and summer, and bypasses the total heat exchanger through the lower air channel because heat recovery is not needed in other modes, thereby reducing the system resistance and reducing the energy consumption of the fan.

Description

Combined control of temperature and CO2Multi-air-duct constant-humidity fresh air machine and working method thereof

Technical Field

The invention relates to indoor air purification equipment and the technical field, in particular to a constant-humidity fresh air fan which is suitable for occasions without a centralized air treatment system, such as houses, offices, classrooms, basements and the like, such as villas, apartments and the like, and can realize multiple functions of humidification, dehumidification, purification, heat recovery, fresh air and the like.

Background

In the middle and lower reaches of Yangtze river in China, the season of plum rain is nearly one month from 6 middle ten days to 7 last days every year, the temperature is not high in the period, the temperature is generally 20-28 ℃, and the relative humidity is very high and can reach 80-95%. In rainy season, people feel stuffy, diseases and house articles are easy to cause mildew, indoor air quality and comfortableness are affected, and meanwhile harm is caused to human health. With the improvement of living standard, people pursue the increasing enhancement of living quality, and at present, fresh air dehumidifiers are installed in many houses such as villas, apartments and the like.

The common household air conditioning device generally adopts a mechanical dew point cooling and dehumidifying method to carry out cooling and dehumidifying treatment on fresh air, one main disadvantage of the fresh air treatment method is that energy consumption is caused, and because the treatment requirements of sensible heat and latent heat (humidity) are simultaneously met, the temperature of a required cold source is very low, so that the temperature of the dehumidified fresh air is too low to meet the requirement of indoor air supply temperature; if the common electric heating reheating treatment is adopted, larger high-grade energy consumption can be generated; in addition, a common household air conditioning device does not have a fresh air system, and cannot meet the requirement of indoor positive pressure, so that outdoor air permeates indoors, the quality of indoor air is influenced, and indoor heat and humidity loads are increased, so that the energy consumption of the air conditioner is increased.

The existing fresh air machine generally only carries out energy exchange on indoor exhaust and outdoor fresh air, does not dehumidify the fresh air, has a single operation mode, and cannot meet the indoor constant humidity requirement.

In order to solve the problems, the fresh air dehumidifier adopting total heat exchange is widely applied to the market. Carry out the total heat exchange with new trend and return air, heat exchange efficiency is high, utilizes indoor return air energy to reduce the sensible heat and the latent heat load of new trend after, cools off the dehumidification again, can reduce the requirement to the intercooler water supply temperature.

Although the total heat exchange fresh air dehumidifier has been applied to a certain range, the units still have some problems to be further improved. One of the important problems is that the resistance of the total heat exchanger is large, and the unit is in a working mode of operating all the year round, such as a transition season, the outdoor temperature is generally lower than the indoor temperature, and heat recovery should not be carried out. Therefore, when the total heat exchange is not needed or the heat exchange effect is not obvious, the unnecessary fan energy consumption is greatly increased if the total heat exchanger is still passed. Furthermore, such units typically simply place the evaporator and condenser in the same duct, so that the treated supply air temperature is higher than the room temperature, adding additional room air conditioning load despite dehumidification. Therefore, the new fan which can meet the use requirements of constant humidity, purification, comfort and the like all the year around, fully saves unnecessary dehumidification energy consumption, fan energy consumption and indoor air conditioner energy consumption through mode switching and realizes energy-saving operation to the maximum extent has obvious application value.

In addition, in order to meet diversified requirements of building functions, the unit can adapt to application of more occasions, each component module is convenient to disassemble, overhaul and replace, the flexibility and the service life of the unit are improved, the unit is subjected to modular design, and multiple functions of humidification, dehumidification, purification, heat recovery, fresh air and the like are also important directions for the development of the existing fresh air processing equipment.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a combined temperature and CO control system which skillfully utilizes a double-layer air duct to switch modes and is assisted by full heat recovery and heat pipe reheating2The multi-air-duct constant-humidity fresh air machine and the working method thereof.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: combined control of temperature and CO2The multi-air-channel constant-humidity fresh air machine is provided with a fresh air inlet, a return air inlet, an air supply outlet and an air exhaust outlet, and a double-layer air channel, a total heat exchanger, an air treatment block, an air exhaust treatment block and a fan are arranged in the fresh air machine.

The fan comprises an air supply fan and an air exhaust fan, wherein the double-layer air duct consists of an upper-layer air duct and a lower-layer air duct which are mutually parallel and separated; the electric control box is arranged on the side of the double-layer air duct and is arranged in the vacant space behind the primary filter.

The air return inlet of the invention is sequentially connected with an air treatment block, an air supply fan and an air supply outlet through an upper air duct or a lower air duct, the fresh air inlet is sequentially connected with an air exhaust treatment block, an air exhaust fan and an air exhaust outlet through the upper air duct or the lower air duct, the total heat exchanger is fixedly arranged in the upper air duct, a partition plate is arranged in the lower air duct to divide the lower air duct into a left air duct and a right air duct which are parallel, the left air duct is communicated with the air return inlet and the air treatment block, and the right air duct is communicated with the fresh air inlet and the air.

The lower air duct of the invention is internally provided with electric air valves I, II and III, wherein the electric air valve I is arranged between the air return inlet and the lower air duct, the electric air valve II is arranged on the partition plate, and the electric air valve III is arranged between the lower air duct and the exhaust processing block.

The air treatment block comprises a medium-efficiency filter, an electrostatic dust removal module, a heat exchanger I, a humidification module and a condensation section of a heat pipe heat exchanger; the exhaust processing block comprises a compressor, a heat exchanger II and an evaporation section of the heat pipe heat exchanger.

A primary filter is arranged between the air return opening and the double-layer air duct, and a primary filter is arranged between the fresh air opening and the double-layer air duct; direct prefiltering of filter just lets in the inside air of device, avoids inside the granule in the air directly enters into the device, influences the normal operating of the inside follow-up equipment of device, and just filter just for dismantling the module, convenient change and subsequent clearance.

The air treatment block is formed by sequentially connecting a medium-efficiency filter, an electrostatic dust removal module, a heat exchanger I, a humidification module and a condensation section of a heat pipe heat exchanger and is finally connected to an air supply fan of an air supply outlet; the air exhaust processing block is formed by sequentially connecting a compressor, a heat exchanger II and an evaporation section of the heat pipe heat exchanger and is finally connected to an air exhaust fan at an air outlet.

The fresh air inlet of the invention is internally provided with a temperature sensor, and the return air inlet is internally provided with a temperature sensor andCO2a concentration sensor.

The heat pipe heat exchanger is a gravity type heat pipe heat exchanger with single-row pipes vertically arranged, and the total heat exchanger is a plate-fin total heat exchanger; the gravity type heat pipe exchanger is horizontally arranged in a fresh air machine, a condensing section of the gravity type heat pipe exchanger is inclined to an evaporating section, unidirectional work of the gravity type heat pipe exchanger is guaranteed, and partial condensation heat of a condenser is absorbed to enable air supply to reach proper temperature in a summer fresh air mode and a return air internal circulation mode.

The primary filter, the intermediate filter, the electrostatic dust removal module, the heat exchanger I, the heat exchanger II, the compressor, the humidifying module and the heat pipe heat exchanger are all of modular drawer type structures, and the primary filter, the intermediate filter, the electrostatic dust removal module and the humidifying module are all detachable modules; through this kind of design, not only can conveniently dismantle maintenance and change, can increase and decrease the functional section according to the user's demand of difference simultaneously.

The invention controls temperature and CO in a combined manner2The working method of the multi-air-channel constant-humidity fresh air fan is based on outdoor gas phase conditions, a temperature sensor, a CO sensor and the like2Indoor air data measured by a concentration sensor comprises five working modes in the running time of the whole year: a winter fresh air mode, a summer return air internal circulation mode, a natural ventilation mode and a standby mode.

The working method of the summer full fresh air mode comprises the following steps: in summer, when detecting indoor CO2When the concentration rises to 1200ppm, the heat pump starts a refrigeration mode, the electric air valve I and the electric air valve II are closed, and the electric air valve III is opened; in the upper air duct, fresh air and return air respectively enter a fresh air inlet and a return air inlet, the fresh air filtered by a primary filter and subjected to total heat exchange flows in a cross mode to enter an air processing block, is subjected to intermediate-effect filtering and electrostatic dust removal, enters an evaporator to be cooled and dehumidified, passes through a condensation section of a gravity type heat pipe heat exchanger, is heated to reach a proper air supply state, and is sent into a room through an air supply fan and an air supply outlet; fresh air enters the lower air duct and the fresh air inlet and flows through the partition plate and the upper air ductAnd (3) performing cross heat exchange, processing by a compressor, absorbing a part of cold energy by an evaporation section of the gravity type heat pipe heat exchanger, and sending out of the room through an exhaust fan and an exhaust outlet.

The working method of the summer return air internal circulation mode comprises the following steps: in summer, when detecting indoor CO2When the concentration is reduced to 600ppm, the heat pump starts a refrigeration mode, the electric air valve I and the electric air valve III are opened, the electric air valve II is closed, the upper air channel is closed, return air is introduced into the lower air channel from the return air inlet, and the return air enters the evaporator to be cooled and dehumidified after being processed by the left air channel and the filtration treatment, then a part of condensation heat is absorbed by a condensation section of the gravity type heat pipe heat exchanger, the temperature is raised, a proper air supply state is achieved, and the condensation heat is sent into a room through the air supply fan and the air supply opening; meanwhile, fresh air is introduced from a fresh air inlet, passes through the primary filter and the right air duct, is treated by the compressor to condense heat, absorbs part of cold energy through the evaporation section of the gravity type heat pipe, and is sent out of the room through the air exhaust fan and the air outlet.

The working method of the winter full fresh air mode comprises the following steps: in winter, when detecting indoor CO2When the concentration is increased to 1200ppm, a heat pump is started to realize a heating mode, an electric air valve I and an electric air valve II are closed, an electric air valve III is opened, fresh air and return air respectively enter from a fresh air inlet and a return air inlet in an upper layer air duct, the fresh air filtered by a primary filter and subjected to total heat exchange flows into an air processing block in a cross mode, is heated after entering a condenser through intermediate-effect filtering and electrostatic dust removal, is humidified through a humidifying module to achieve a proper air supply state, and is sent into a room through an air supply fan and an air supply outlet; meanwhile, in the lower air duct, the fresh air introduced from the fresh air inlet performs cross heat exchange with the upper air duct at the partition plate, passes through the compressor and the evaporator, and is finally sent out of the room through the exhaust fan and the air outlet.

The working method of the standby mode of the invention is as follows: in winter, when detecting indoor CO2When the concentration is reduced to 600ppm, the fresh air inlet is closed, other devices are adopted for supplying heat indoors, the devices stop working temporarily, and the standby state is kept.

The working method of the natural ventilation mode comprises the following steps: in the transition season, the heat pump is closed, and electronic blast gate I, electronic blast gate III are closed, and electronic blast gate II is opened, and upper air duct is closed, in lower air duct, lets in the new trend from the new trend wind gap, through just imitating filter, middle-effect filter, electrostatic precipitator filtration treatment back, directly send into indoor by air supply fan and supply-air outlet.

The device is provided with a condensed water atomization spraying system, the condensed water atomization spraying system is composed of a condensed water disc, a water pipe, a liquid level sensor, a micro water pump and an atomization nozzle, the condensed water disc is arranged below a heat exchanger I, the atomization nozzle is uniformly distributed on the top of a heat exchanger II, and the condensed water disc is connected to the atomization nozzle through the water pipe and the micro water pump.

The working method of the condensed water atomization spraying system comprises the following steps: under the brand-new wind mode in summer or the return air inner loop mode in summer, collect the condensate water after the summer dehumidification on heat exchanger I through the condensate water dish, after the liquid level of condensate water dish is higher than the setting value, start miniature pump, make the condensate water become tiny drop of water through atomizer, spray on heat exchanger II, the heat of condensation is taken away in the evaporation.

Compared with a conventional fresh air dehumidifier or a constant-humidity fresh air fan, the invention designs the upper and lower double-layer air ducts to realize annual energy-saving operation, flexibly switches the fresh air mode and the return air internal circulation mode, fully realizes energy recovery of return air in a building and reduces energy consumption of the system. And the fresh air and the return air which are sent into the room are enabled to carry out total heat exchange in the upper air channel only in the fresh air mode in winter and summer, and the total heat exchanger is bypassed through the lower air channel in other modes because heat recovery is not needed, so that the system resistance is reduced, and the energy consumption of the fan is reduced.

The gravity type heat pipe is compact in structure, convenient to install and maintain, long in service life, high in heat exchange efficiency and small in resistance, is arranged after cooling and dehumidifying to recover partial condensation heat, and heats air supply to a proper temperature, low-grade energy is utilized, power consumption is saved compared with electric heating, the condition that the air supply temperature is higher than the indoor temperature due to the fact that an evaporator and a condenser are arranged in the same air duct in a conventional dehumidifying fresh air fan, the indoor cooling load is increased is avoided, and the energy consumption of an indoor air conditioner is saved. Therefore, the device achieves the purpose of energy conservation on the premise of ensuring the air supply comfort.

The invention has the advantages that: the invention provides a temperature and CO2The concentration joint control type multi-air-channel comfortable constant-humidity fresh air fan and the fresh air processing method ingeniously utilize double-layer air channels to switch modes, and are assisted by total heat recovery and heat pipe reheating, so that the problems that in the prior art, the dehumidification effect is poor, the operation energy consumption is high, the air supply temperature is high, the energy consumption of an additional indoor air conditioner is increased, the operation mode is single and the like are solved, and the concentration joint control type constant-humidity fresh air fan and the fresh air processing method are specifically embodied in the:

1) from the perspective of dehumidification effect: the invention relates to a method for preparing temperature and CO2Compared with the traditional fresh air dehumidifying device which only reduces the moisture content of fresh air to be close to the moisture content of indoor air but does not really solve the indoor dehumidifying problem, the multi-air-channel comfortable constant-humidity fresh air fan with the concentration joint control has the advantages that the moisture content of the fresh air is processed to be lower than the moisture content of the indoor air, and the fresh air can completely bear the indoor humidity load.

2) From the perspective of operating energy consumption: the invention skillfully designs the upper and lower double-layer air ducts, realizes the switching of different working modes through the air duct switching, and meets the requirement of energy-saving operation all the year around. This design has both realized making the new trend of sending into indoor and return air carry out total heat recovery under the new trend mode in winter, summer that need heat recovery, sparingly dehumidifies required compressor energy consumption, has realized the total heat exchanger of bypass under other modes that do not need heat recovery again, reduces the air flow resistance, saves the fan energy consumption. Meanwhile, indoor CO is detected in winter and summer2The concentration changes, switches to the return air inner loop mode in good time, make full use of return air in order to reduce the required compressor energy consumption of dehumidification. In addition, under the fresh air mode in winter and summer, the heat exchange of the return air and the heat exchanger at the air exhaust side is fully utilized, and the operation condition of the heat exchanger at the air exhaust side is improved.

3) Utilize gravity type heat pipe compact structure, installation maintenance convenience, longe-lived, heat exchange efficiency is high, advantage such as resistance is little, replace electric heating with gravity type heat pipe, guarantee the travelling comfort of air supply through retrieving the heat of condensation, utilize the low-grade energy, reduce power consumption. Compared with the existing dehumidification fresh air machine in the market that the evaporator and the condenser are arranged in the same air duct, the air supply temperature is higher than the indoor temperature, so that the energy consumption of the indoor air conditioner is increased, the heat pipe is used for absorbing partial condensation heat to heat the air supply to the proper temperature, but still lower than the indoor temperature, and therefore the energy consumption of the indoor air conditioner is saved.

4) The condensation water atomization spray cooling condenser utilizes the evaporation of condensation water to take away partial condensation heat, improves the operation condition of the condenser, reduces the fresh air quantity required by the cooling condenser, reduces the energy consumption of a fan, and simultaneously recovers the condensation water, thereby embodying the idea of energy conservation and environmental protection.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is a perspective view of the upper and lower double ducts of the apparatus of the present invention;

fig. 3 is a schematic view of a condensate atomizing spray system of the present invention.

Wherein, 1, a fresh air port; 2, a primary filter; 3 a total heat exchanger; 4, a medium-efficiency filter; 5, an electrostatic dust removal module; 6, a heat exchanger I; 7, a humidifying module; 8, a heat pipe heat exchanger; 9 an air supply fan; 10 air supply outlet; 11 air return inlet; 12 a compressor; 13 a condensed water atomization spraying system; 14, a heat exchanger II; 15 air exhaust fan; 16 air outlet; 17, an electric cabinet; 18 heat pump air conditioner vessels; 19 a condensate pan; 20, an electric air valve I; 21, an electric air valve II; 22 an electric air valve III; 23 a liquid level sensor; 24 a micro water pump; 25 atomizing spray head.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

Example 1: a combined temperature and CO control as shown in figures 1 and 22The multi-air-channel constant-humidity fresh air machine is characterized in that a fresh air inlet 1, a return air inlet 11, an air supply outlet 10 and an air exhaust outlet 16 are arranged on the fresh air machine, and a double-layer air channel, a total heat exchanger 2, an air processing block, an air exhaust processing block and a fan are arranged in the fresh air machine.

The fan comprises an air supply fan 9 and an air exhaust fan 15, wherein the double-layer air duct consists of an upper-layer air duct and a lower-layer air duct which are mutually parallel and separated; an electric cabinet 17 is arranged on the side of the double-layer air duct, and the electric cabinet 17 is arranged in the vacant space on the rear side of the primary filter 2.

The air return port 11 of the invention is connected with an air processing block, an air supply fan 9 and an air supply port 10 in sequence through an upper air duct or a lower air duct, the fresh air port 1 is connected with an air exhaust processing block, an air exhaust fan 15 and an air exhaust port 16 in sequence through the upper air duct or the lower air duct, the total heat exchanger 3 is fixedly arranged in the upper air duct, a partition board is arranged in the lower air duct to divide the lower air duct into a left air duct and a right air duct which are parallel, the left air duct is communicated with the air return port 11 and the air processing block, and the right air duct is communicated with the fresh air port 1 and.

The invention relates to a lower-layer air duct, which is internally provided with an electric air valve I (20), an electric air valve II (21) and an electric air valve III (22), wherein the electric air valve I (20) is arranged between an air return opening 11 and the lower-layer air duct, the electric air valve II (21) is arranged on a partition plate, and the electric air valve III (22) is arranged between the lower-layer air duct and an exhaust treatment block.

The air treatment block comprises a middle-effect filter 4, an electrostatic dust removal module 5, a heat exchanger I (6), a humidification module 7 and a condensation section of a heat pipe heat exchanger 8; the exhaust air processing block comprises a compressor 12, a heat exchanger II (14) and an evaporation section of the heat pipe heat exchanger 8.

Example 2: as shown in fig. 1 and 2, a primary filter 2 is arranged between the air return opening 11 and the double-layer air duct, and a primary filter 2 is arranged between the fresh air opening 1 and the double-layer air duct; the air that lets in the device inside is directly prefiltered through primary filter 2, avoids inside the granule in the air directly enters into the device, influences the normal operating of the inside follow-up equipment of device, and primary filter 2 is for dismantling the module, convenient change and subsequent clearance.

Example 3: as shown in fig. 1 and 2, the air treatment block of the present invention is formed by sequentially connecting condensation sections of a medium efficiency filter 4, an electrostatic dust removal module 5, a heat exchanger i (6), a humidification module 7 and a heat pipe heat exchanger 8, and is finally connected to an air supply fan 9 of an air supply outlet 10; the exhaust processing block is formed by sequentially connecting a compressor 12, a heat exchanger II (14) and an evaporation section of the heat pipe heat exchanger 8 and is finally connected to an exhaust fan 15 of an exhaust outlet 16.

Example 4: as shown in figures 1 and 2, the fresh air inlet 1 of the invention is internally provided with a temperature sensor, and the return air inlet 11 is internally provided with a temperature sensor and CO2A concentration sensor.

Example 5: as shown in fig. 1 and 2, the heat pipe exchanger 8 of the present invention is a gravity type heat pipe exchanger with vertically arranged single-row pipes, and the total heat exchanger 2 is a plate-fin total heat exchanger; the gravity type heat pipe exchanger 8 is horizontally arranged, the condensation section is inclined towards the evaporation section, the unidirectional work of the gravity type heat pipe exchanger 8 is guaranteed, and the gravity type heat pipe exchanger is only used for heating and supplying air to a proper temperature in a refrigeration season.

The heat exchanger I (6), the heat exchanger II (14) and the compressor 12 of the invention are all arranged in a heat pump air conditioner container 18.

Example 6: as shown in fig. 1 and 2, the primary filter 2, the intermediate filter 4, the electrostatic dust removal module 5, the heat exchanger i (6), the heat exchanger ii (14), the compressor 12, the humidification module 7 and the heat pipe heat exchanger 8 according to the present invention are all modularized drawer-type structures, and the primary filter 2, the intermediate filter 4, the electrostatic dust removal module 5 and the humidification module 7 are all detachable modules; through this kind of design, not only can conveniently dismantle maintenance and change, can increase and decrease the functional section according to the user's demand of difference simultaneously.

Example 7: as shown in FIGS. 1 and 2, the present invention combines temperature and CO control2The working method of the multi-air-channel constant-humidity fresh air fan is based on outdoor gas phase conditions, a temperature sensor, a CO sensor and the like2Indoor air data measured by a concentration sensor comprises five working modes in the running time of the whole year: a winter fresh air mode, a summer return air internal circulation mode, a natural ventilation mode and a standby mode.

Example 8: as shown in fig. 1 and 2, the working method of the summer full fresh air mode of the invention is as follows: in summer, when detecting indoor CO2When the concentration rises to 1200ppm, the heat pump starts a refrigeration mode, the electric air valve I (20) and the electric air valve II (21) are closed, and the electric air valve III (22) is opened; in the upper air duct, the fresh air inlet 1 and the return air inlet 11 are divided into two partsThe fresh air and the return air enter respectively, the fresh air filtered by the primary filter 2 and subjected to total heat exchange flows into the air processing block in a cross mode, enters the evaporator 6 through the intermediate-effect filtering 4 and the electrostatic dust collection 5 to be cooled and dehumidified, then passes through the condensation section of the gravity type heat pipe heat exchanger 8, is increased in temperature to reach a proper air supply state, and is sent into a room through the air supply fan 9 and the air supply outlet 10; in the lower air duct, fresh air enters the fresh air inlet 1, and is subjected to cross heat exchange with the upper air duct at the partition plate, then is processed by the compressor 12, and finally is sent out of the room through the exhaust fan 15 and the exhaust outlet 16 after absorbing a part of cold energy by the evaporation section of the gravity type heat pipe heat exchanger 8.

Example 9: as shown in fig. 1 and 2, the operation method of the summer return air internal circulation mode of the present invention is as follows: in summer, when detecting indoor CO2When the concentration is reduced to 600ppm, the heat pump starts a refrigeration mode, an electric air valve I (20) and an electric air valve III (22) are opened, an electric air valve II (21) is closed, an upper air channel is closed, return air is introduced from an air return inlet 11 in a lower air channel, enters an evaporator 6 to be cooled and dehumidified after being processed by a left air channel and filtration, then absorbs part of condensation heat through a condensation section of a gravity type heat pipe exchanger 8, the temperature is increased to reach a proper air supply state, and the condensation heat is sent into a room through an air supply fan 9 and an air supply outlet 10; meanwhile, fresh air is introduced from the fresh air inlet 1, passes through the primary filter 2 and the right air duct, is treated by the compressor 12 for condensation heat, is absorbed by the evaporation section of the gravity type heat pipe 8 for part of cold energy, and is sent out of the room through the exhaust fan 15 and the exhaust outlet 16.

Example 10: as shown in fig. 1 and 2, the working method of the winter full fresh air mode of the invention is as follows: in winter, when detecting indoor CO2When the concentration is increased to 1200ppm, a heat pump is started to perform a heating mode, an electric air valve I (20) and an electric air valve II (21) are closed, an electric air valve III (22) is opened, fresh air and return air respectively enter from a fresh air inlet 1 and a return air inlet 11 in an upper-layer air duct, the fresh air filtered by a primary filter 2 and subjected to total heat exchange flows in a cross way to enter an air processing block, passes through a medium-efficiency filter 4 and an electrostatic dust removal 5, enters a condenser 6 and is heated, is humidified by a humidifying module 7 to achieve a proper air supply state, and is sent into a room through an air supply fan 9 and an air supply outlet 10; at the same time, the user can select the desired position,in the lower air duct, the fresh air introduced from the fresh air inlet 1 is subjected to cross heat exchange with the upper air duct at the partition plate, passes through the compressor 12 and the evaporator 14, and is finally sent out of the room through the exhaust fan 15 and the exhaust outlet 16.

Example 11: as shown in fig. 1 and 2, the operation method of the standby mode of the present invention is as follows: in winter, when detecting indoor CO2When the concentration is reduced to 600ppm, the fresh air inlet 1 is closed, other devices are adopted for supplying heat indoors, the devices stop working temporarily, and the standby state is kept.

Example 12: as shown in fig. 1 and 2, the natural draft mode of the present invention operates as follows: in the transition season, the heat pump is closed, and electronic blast gate I (20), electronic blast gate III (22) are closed, and electronic blast gate II (21) are opened, and upper air duct is closed, in lower air duct, lets in the new trend from new trend mouth 1, through just imitating filter 2, middle efficiency filter 4, 5 filtration treatment backs of electrostatic precipitator, directly send into indoor by air supply fan 9 and supply-air outlet 10.

Example 13: as shown in fig. 1, 2 and 3, the device of the invention is provided with a condensed water atomization spraying system 13, wherein the condensed water atomization spraying system 13 is composed of a condensed water disc 19, a water pipe, a liquid level sensor 23, a micro water pump 24 and an atomization nozzle 25, the condensed water disc 19 is arranged below a heat exchanger i (6), the atomization nozzle 25 is uniformly distributed on the top of a heat exchanger ii (14), and the condensed water disc 19 is connected to the atomization nozzle 25 through the water pipe and the micro water pump 24.

The working method of the condensed water atomization spraying system 13 is as follows: in a summer fresh air mode or a summer return air internal circulation mode, condensed water after summer dehumidification on the heat exchanger I (6) is collected through the condensed water tray 19, when the liquid level of the condensed water tray 19 is higher than a set value, the micro water pump 24 is started, the condensed water is changed into fine water drops through the atomizing nozzle 25 and sprayed on the heat exchanger II (14), and condensation heat is taken away through evaporation.

Example 14: according to the meteorological parameters of Nanjing all the year round, taking a certain family house as an example, the energy-saving benefit and the economical efficiency of the constant-humidity fresh air fan are theoretically calculated. The annual meteorological parameters are combined with the working characteristics of the constant-humidity fresh air fan, and the running days in different modes are determined, as shown in table 1.

Table 1 constant humidity fresh air machine operation mode and operation days of this design

Note: the summer season in the table refers to 6-9 months needing refrigeration and dehumidification, including plum rain season, which is counted in 1 month.

Compared with the traditional total heat exchange type constant-humidity fresh air fan, the energy-saving analysis is performed on the designed constant-humidity fresh air fan, as shown in table 2.

Table 2 energy saving analysis of the constant humidity fresh air machine of the present design compared with the conventional total heat exchange type constant humidity fresh air machine

The annual operating energy consumption of the designed constant-humidity fresh air machine and the traditional constant-humidity fresh air machine is calculated and is shown in table 3.

TABLE 3 annual energy consumption comparison of constant humidity fresh air blower of the design and traditional constant humidity fresh air blower

As can be seen from tables 2 and 3, the constant-humidity fresh air machine is designed according to outdoor meteorological conditions and indoor CO2Different working modes are intelligently started according to concentration, and compared with the traditional constant-humidity fresh air fan, the energy consumption can be saved by 2154.7KW & h all the year round, and the energy consumption accounts for 33.5% of the total energy consumption of the traditional constant-humidity fresh air fan.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and any combination or equivalent changes made on the basis of the above-mentioned embodiments are also within the scope of the present invention.

Claims (8)

1. Combined control of temperature and CO2The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that a fresh air inlet and a return air inlet are arranged on the fresh air fanThe fresh air machine is internally provided with a double-layer air duct, a total heat exchanger, an air processing block, an exhaust processing block and a fan; the fan comprises an air supply fan and an air exhaust fan, and the double-layer air duct consists of an upper-layer air duct and a lower-layer air duct which are mutually parallel and separated; the air return port is sequentially connected with the air treatment block, the air supply fan and the air supply outlet through an upper air channel or a lower air channel, the fresh air port is sequentially connected with the air exhaust treatment block, the air exhaust fan and the air outlet through the upper air channel or the lower air channel, the total heat exchanger is fixedly arranged in the upper air channel, a partition plate is arranged in the lower air channel to divide the lower air channel into a left air channel and a right air channel which are parallel, the left air channel is communicated with the air return port and the air treatment block, and the right air channel is communicated with the fresh air port and the air exhaust treatment block; the lower-layer air duct is internally provided with electric air valves I, II and III, the electric air valve I is arranged between the air return opening and the lower-layer air duct, the electric air valve II is arranged on the partition plate, and the electric air valve III is arranged between the lower-layer air duct and the exhaust air processing block; the air treatment block comprises a medium-efficiency filter, an electrostatic dust removal module, a heat exchanger I, a humidification module and a condensation section of a heat pipe heat exchanger; the exhaust processing block comprises a compressor, a heat exchanger II and an evaporation section of the heat pipe heat exchanger; the heat pipe heat exchanger is a gravity type heat pipe heat exchanger;
the working method is based on outdoor meteorological conditions, a temperature sensor and CO2Indoor air data measured by a concentration sensor comprises five working modes in the running time of the whole year: the system comprises a winter fresh air mode, a summer return air internal circulation mode, a natural ventilation mode and a standby mode, wherein in summer, a heat exchanger I serves as an evaporator, a heat exchanger II serves as a condenser, in winter, the heat exchanger I serves as a condenser, and the heat exchanger II serves as an evaporator;
the working method of the summer full fresh air mode comprises the following steps: in summer, when detecting indoor CO2When the concentration rises to 1200ppm, the heat pump starts a refrigeration mode, the electric air valve I and the electric air valve II are closed, and the electric air valve III is opened; in the upper air channel, fresh air and return air are respectively fed into fresh air inlet and return air inlet, and the fresh air filtered by primary filter and completely heat-exchanged is cross-flowed and fed into airThe processing block enters the evaporator for cooling and dehumidification through medium-efficiency filtration and electrostatic dust removal, then the temperature rises through a condensation section of the gravity type heat pipe heat exchanger to reach a proper air supply state, and the air is sent into a room through an air supply fan and an air supply outlet; fresh air enters the lower air duct and enters the fresh air inlet, the partition plate and the upper air duct perform cross heat exchange, the fresh air is processed by the compressor, and finally the fresh air is discharged out of the room through the exhaust fan and the air outlet after a part of cold energy is absorbed by the evaporation section of the gravity type heat pipe heat exchanger;
the working method of the summer return air internal circulation mode is as follows: in summer, when detecting indoor CO2When the concentration is reduced to 600ppm, the heat pump starts a refrigeration mode, the electric air valve I and the electric air valve III are opened, the electric air valve II is closed, the upper air channel is closed, return air is introduced into the lower air channel from the return air inlet, and the return air enters the evaporator to be cooled and dehumidified after being processed by the left air channel and the filtration treatment, then a part of condensation heat is absorbed by a condensation section of the gravity type heat pipe heat exchanger, the temperature is raised, a proper air supply state is achieved, and the condensation heat is sent into a room through the air supply fan and the air supply opening; meanwhile, fresh air is introduced from a fresh air inlet, passes through the primary filter and the right air duct, is treated by a compressor to condense heat, absorbs part of cold energy through an evaporation section of the gravity type heat pipe, and is sent out of the room through an exhaust fan and an exhaust outlet;
the working method of the winter full fresh air mode comprises the following steps: in winter, when detecting indoor CO2When the concentration is increased to 1200ppm, a heat pump is started to realize a heating mode, an electric air valve I and an electric air valve II are closed, an electric air valve III is opened, fresh air and return air respectively enter from a fresh air inlet and a return air inlet in an upper layer air duct, the fresh air filtered by a primary filter and subjected to total heat exchange flows into an air processing block in a cross mode, is heated after entering a condenser through intermediate-effect filtering and electrostatic dust removal, is humidified through a humidifying module to achieve a proper air supply state, and is sent into a room through an air supply fan and an air supply outlet; meanwhile, in the lower air duct, the fresh air introduced from the fresh air inlet performs cross heat exchange with the upper air duct at the partition plate, passes through the compressor and the evaporator, and is finally sent out of the room through the exhaust fan and the air outlet;
the operation method of the standby mode is as followsThe following: in winter, when detecting indoor CO2When the concentration is reduced to 600ppm, the fresh air inlet is closed, other devices are adopted for supplying heat indoors, the devices stop working temporarily and are kept in standby;
the working method of the natural ventilation mode comprises the following steps: in the transition season, the heat pump is closed, and electronic blast gate I, electronic blast gate III are closed, and electronic blast gate II is opened, and upper air duct is closed, in lower air duct, lets in the new trend from the new trend wind gap, through just imitating filter, middle-effect filter, electrostatic precipitator filtration treatment back, directly send into indoor by air supply fan and supply-air outlet.
2. The CO-controlling of temperature and CO of claim 12The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that a primary filter is arranged between the return air inlet and the double-layer air channel, and a primary filter is arranged between the fresh air inlet and the double-layer air channel.
3. The CO-controlling of temperature and CO of claim 12The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that the air processing block is formed by sequentially connecting a medium-efficiency filter, an electrostatic dust removal module, a heat exchanger I, a humidification module and a condensation section of a heat pipe heat exchanger and is finally connected to an air supply fan of an air supply outlet; the air exhaust processing block is formed by sequentially connecting a compressor, a heat exchanger II and an evaporation section of the heat pipe heat exchanger and is finally connected to an air exhaust fan at an air outlet.
4. The CO-controlling of temperature and CO of claim 12The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that a temperature sensor is arranged in the fresh air inlet, and a temperature sensor and CO are arranged in the return air inlet2A concentration sensor.
5. The CO-controlling of temperature and CO of claim 12The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that the heat pipe heat exchanger is a gravity type heat pipe heat exchanger with single-row pipes vertically arranged, and the total heat exchanger is a plateFinned total heat exchanger.
6. Temperature and CO CO-control according to claim 2 or 32The working method of the multi-air-channel constant-humidity fresh air fan is characterized in that the primary filter, the intermediate filter, the electrostatic dust removal module, the heat exchanger I, the heat exchanger II, the compressor, the humidifying module and the heat pipe heat exchanger are all of modularized drawer type structures, and the primary filter, the intermediate filter, the electrostatic dust removal module and the humidifying module are all detachable modules.
7. CO-controlling temperature and CO according to claim 12The working method of the multi-air-channel constant-humidity fresh air machine is characterized in that a condensed water atomization spraying system is arranged in the fresh air machine, the condensed water atomization spraying system consists of a condensed water disc, a water pipe, a liquid level sensor, a micro water pump and an atomization nozzle, the condensed water disc is arranged below a heat exchanger I, the atomization nozzle is uniformly distributed at the top of a heat exchanger II, and the condensed water disc is connected to the atomization nozzle through the water pipe and the micro water pump;
the working method of the condensed water atomization spraying system comprises the following steps: under the brand-new wind mode in summer or the return air inner loop mode in summer, collect the condensate water after the summer dehumidification on heat exchanger I through the condensate water dish, after the liquid level of condensate water dish is higher than the setting value, start miniature pump, make the condensate water become tiny drop of water through atomizer, spray on heat exchanger II, the heat of condensation is taken away in the evaporation.
8. CO-controlling temperature and CO according to claim 12The working method of the multi-air-channel constant-humidity fresh air machine is characterized in that the gravity type heat pipe heat exchanger is horizontally installed in the vertical direction of the fresh air machine, and a condensation section is inclined towards an evaporation section;
the gravity type heat pipe heat exchanger comprises the following working methods: and under a summer fresh air mode and a summer return air internal circulation mode, the condensation heat generated in the heat exchanger II is absorbed by the gravity type heat pipe heat exchanger, so that the supplied air reaches a proper temperature.
CN201710337864.6A 2017-05-15 2017-05-15 Combined control of temperature and CO2Multi-air-duct constant-humidity fresh air machine and working method thereof CN107143945B (en)

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CN108758991A (en) * 2018-04-27 2018-11-06 广东美的制冷设备有限公司 Control method, air conditioner and the computer readable storage medium of air conditioner
CN109737549B (en) * 2018-12-19 2020-09-18 广州西奥多电气设备有限公司 Multi-mode total heat exchange fresh air system and control method thereof
CN110094820A (en) * 2019-05-30 2019-08-06 南安市三落工业设计有限公司 A kind of double cold source dehumidification fresh airs
CN110595003A (en) * 2019-09-25 2019-12-20 珠海格力电器股份有限公司 Fresh air ventilation device and control method and device of air conditioner

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