CN110848794B - Single cold and hot source fresh air humidifying unit - Google Patents

Single cold and hot source fresh air humidifying unit

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Publication number
CN110848794B
CN110848794B CN201911296541.2A CN201911296541A CN110848794B CN 110848794 B CN110848794 B CN 110848794B CN 201911296541 A CN201911296541 A CN 201911296541A CN 110848794 B CN110848794 B CN 110848794B
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CN
China
Prior art keywords
condenser
expansion valve
evaporator
reheat
fresh air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN201911296541.2A
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Chinese (zh)
Other versions
CN110848794A (en
Inventor
薛明明
王宏革
毕承志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Hongxiang Indoor Climate Technology Co ltd
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Hunan Hongxiang Indoor Climate Technology Co ltd
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Application filed by Hunan Hongxiang Indoor Climate Technology Co ltd filed Critical Hunan Hongxiang Indoor Climate Technology Co ltd
Priority to CN201911296541.2A priority Critical patent/CN110848794B/en
Publication of CN110848794A publication Critical patent/CN110848794A/en
Application granted granted Critical
Publication of CN110848794B publication Critical patent/CN110848794B/en
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Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0029—Axial fans
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters

Landscapes

  • 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)
  • Air Conditioning Control Device (AREA)

Abstract

The invention belongs to a fresh air humidity control unit, in particular to a fresh air humidity control unit with single cold and heat source, which comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises an air inlet, a filter screen assembly, an evaporator, a reheat condenser, a humidifier, a fan and an air outlet which are sequentially arranged, the outdoor unit comprises a four-way valve, a compressor, a condenser and an outdoor expansion valve which form a loop with the evaporator, the compressor and the condenser are all connected with the four-way valve, a radiator is arranged on the condenser, the reheat condenser is connected with the condenser in parallel through a pipeline, and the reheat expansion valve is arranged on the pipeline of the reheat condenser close to the evaporator.

Description

Single cold and hot source fresh air humidifying unit
Technical Field
The invention belongs to a fresh air humidity control unit, and particularly relates to a fresh air humidity control unit with single cold and heat sources.
Background
Along with the improvement of life quality, the requirements of people on living environment are continuously improved. In home and working environment, the air treatment device not only has a fresh air system for indoor and outdoor ventilation, but also has corresponding air treatment equipment for the temperature, humidity and PM2.5 content in the air. For a new house, the air conditioning equipment comprises a fresh air purifying system for indoor and outdoor ventilation, an air conditioning system for adjusting indoor temperature, a dehumidifying system for adjusting indoor humidity, a winter humidifying system and the like, and the excessive pipeline design is difficult to install, increases design and construction cost, and brings trouble to subsequent maintenance.
And the existing double-cold-source fresh air unit is characterized in that a hot pump water machine provides cold water to pre-cool fresh air during dehumidification, and a direct expansion system is used for deep dehumidification and temperature adjustment. The direct expansion system is provided with a main condenser and an auxiliary condenser, part of the condensation heat recovered by the auxiliary condenser is used for heating dehumidified air, and the main condenser discharges the condensation heat. The condensation heat discharged by the main condenser of the double-cold-source fresh air unit is directly discharged to the heat pump water machine, and the heat pump water machine is required to cool the cold water which is heated after absorbing the condensation heat for recycling. And the heat pump water machine consumes redundant energy when cooling the cold water which is heated after absorbing the condensation heat, so that the energy efficiency ratio of the system is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a single cold and hot source fresh air humidifying unit which is convenient to regulate temperature and humidity and compact in structure.
The indoor unit comprises an air inlet, a filter screen assembly, an evaporator, a reheat condenser, a humidifier, a fan and an air outlet which are sequentially arranged, the outdoor unit comprises a four-way valve, a compressor, a condenser and an outdoor expansion valve, the compressor, the condenser and the outdoor expansion valve form a loop with the evaporator, the compressor and the condenser are all connected with the four-way valve, a radiator is arranged on the condenser, the reheat condenser is connected with the condenser in parallel through a pipeline, and the reheat expansion valve is arranged on the pipeline of the reheat condenser, which is close to the evaporator.
Furthermore, a main expansion valve is arranged between the evaporator and the condenser and near one side of the evaporator, the main expansion valve is alternatively used with an outdoor expansion valve, the main expansion valve is connected with a check valve facing the condenser in parallel, and the outdoor expansion valve is connected with a check valve facing the evaporator in parallel.
Further, the condenser and the reheat condenser are both provided with filters on the pipelines near one side of the evaporator.
Further, the air inlet comprises a return air valve communicated with indoor air and a fresh air valve communicated with outdoor air.
Still further, still be provided with the ultraviolet lamp between humidifier and the fan.
Further, the fan is a centrifugal fan,
Further, the radiator is an axial flow fan,
Still further, the filter screen subassembly includes primary filter, middle-effect filter and the high-efficient filter that sets gradually.
Further, the primary filter and the high-efficiency filter are provided with a wind pressure difference switch.
The invention further comprises a control system, wherein the control system comprises a controller, a temperature sensor, a temperature and humidity sensor and a pressure sensor, wherein the temperature sensor, the temperature and humidity sensor and the pressure sensor are electrically connected with the controller, the temperature sensor is arranged between the evaporator and the reheat condenser, the temperature and humidity sensor is arranged on the air inlet and the air outlet, the pressure sensor is arranged on the air suction and exhaust pipeline of the compressor, and the controller is further electrically connected with the compressor, the fan and the radiator.
The invention has the advantages that the invention adopts a single cold source and hot source to treat the air, thus avoiding the need of water system operation in the double cold source fresh air dehumidifier unit in the market at present, increasing the energy efficiency ratio of the system, in the dehumidification mode, the heating temperature control of the reheat condenser can be realized by adjusting the flow ratio of the reheat expansion valve and the main expansion valve, the stepless adjustment can be realized, the adjustment process is simple and flexible, the reheat condenser can improve the temperature of the air cooled and dehumidified by the evaporator by recovering the condensation heat, the selection of other heating accessories is reduced, the production cost and the energy consumption of the unit are reduced, compared with the double cold source dehumidifier unit, the condenser is not required to be cooled by a hot pump water machine, and the energy efficiency ratio of the system is improved;
The fresh air humidifying machine set has the functions of dehumidifying, cooling and regulating temperature in summer, humidifying and heating in winter, ventilating in transitional seasons, high adaptability and comfort, compact integral structure, high efficiency and energy saving.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention in dehumidification.
Fig. 2 is a schematic diagram of the operation of the four-way valve in dehumidification according to the present invention.
Fig. 3 is a schematic diagram of the heating system according to the present invention.
Fig. 4 is a schematic diagram of the operation of the four-way valve in heating according to the present invention.
In the figure, a return air valve 1, a fresh air valve 2, a primary filter 3, a middle-effect filter 4, a high-efficiency filter 5, an evaporator 6, a reheating condenser 7, a humidifier 8, an ultraviolet lamp 9, a fan 10, an air outlet 11, a reheating expansion valve 12, a main expansion valve 13, a compressor 14, a four-way valve 15, an outdoor expansion valve 16, an axial flow fan 17, a condenser 18 and an oil separator 19.
Detailed Description
As shown in figures 1-4, the indoor unit comprises an air inlet, a filter screen assembly, an evaporator 6, a reheat condenser 7, a humidifier 8, a fan 10 and an air outlet 11 which are sequentially arranged along the air circulation direction, wherein the filter screen assembly is a part for filtering air, the evaporator 6 is a part for refrigerating and dehumidifying or heating air, the reheat condenser 7 is used for heating the refrigerated and dehumidified air when the evaporator 6 is used for refrigerating and dehumidifying the air, the humidifier 8 is used for humidifying the heated air when the evaporator 6 is used for heating the air, the fan 10 is used for positive pressure air supply from the air inlet side to the air outlet 11 side of the indoor unit, the outdoor unit is used for providing a heat source or a cold source for the evaporator 6 and the reheat condenser 7, the evaporator 6, the compressor 14, the condenser 18 and the outdoor expansion valve 16 which are in a loop are formed by the four-way valve 15, the evaporator 6, the compressor 14 and the condenser 18 are all connected with the four-way valve 15, the flow direction of a regulator can be realized by regulating the regulating valve 15, the flow direction of the regulator 6 is controlled, the evaporator 6 is used for heating the refrigerated and dehumidified air, the reheater 6 is used for heating the air, the evaporator 6 is used for discharging the air through the two-way of the evaporator 6, the reheat condenser 18 and the evaporator 6 is arranged on the two-way of the evaporator 6, the evaporator 6 is used for discharging the heat of the two-way valve 13, the two-way air is used for the heat exchanger, and the heat is used for the heat-exchanging part is discharged by the condenser 6, and the condenser 18, and the heat is used for the heat is discharged by the two-way.
A main expansion valve 13 is arranged between the evaporator 6 and the condenser 18 and near one side of the evaporator 6, the main expansion valve 13 is used alternatively with an outdoor expansion valve 16, in a dehumidification mode, the outdoor expansion valve 16 is closed, the main expansion valve 13 works to reduce the pressure of the high-pressure normal-temperature refrigerant flowing out of the condenser 18, in a heating mode, the main expansion valve 13 is closed, and the outdoor expansion valve 16 works to reduce the pressure of the high-pressure normal-temperature refrigerant flowing out of the evaporator 6;
The main expansion valve 13 and the outdoor expansion valve 16 used for refrigerating and heating the evaporator 6 are respectively arranged between the condenser 18 and the evaporator 6, the main expansion valve 13 is arranged on one side close to the evaporator 6, and the outdoor expansion valve 16 is arranged on one side close to the condenser 18, so that the phenomenon that the refrigerant firstly passes through the evaporator 6 and the main expansion valve 13 to be changed into low-pressure low-temperature liquid refrigerant and then passes through a longer pipeline to the condenser 18 in a heating mode can be avoided, and the influence of the service life of the pipeline due to the fact that the low-pressure low-temperature liquid refrigerant passes through the longer pipeline is prevented.
The main expansion valve 13 is connected with a one-way valve arranged towards the condenser 18 in parallel, and the outdoor expansion valve 16 is connected with a one-way valve arranged towards the evaporator 6 in parallel, so that the pipeline is communicated when the main expansion valve 13 and the outdoor expansion valve 16 are used alternatively.
The condenser 18 and the reheating condenser 7 are both provided with filters on the pipelines close to one side of the evaporator 7, the filters are preferably copper filters, the copper filters filter the refrigerant, and the expansion valve is prevented from being blocked when impurity particles in the refrigerant pass through the expansion valve.
The air inlet comprises an air return air valve 1 communicated with indoor air and a fresh air valve 2 communicated with outdoor air, three air inlet modes of fresh air, fresh air and return air can be switched by adjusting the air inlet proportion of the air return air valve 1 and the fresh air valve 2, and the proportion of the air return air valve 1 can be increased appropriately under the condition that the oxygen of the indoor air is enough, so that the cold energy or heat required to be generated in the humidifying or warming mode of the humidifying machine set can be reduced, and the effect of reducing energy consumption is achieved.
An ultraviolet lamp 9 is further arranged between the humidifier 8 and the fan 10, and the ultraviolet lamp 9 is used for sterilizing the treated air, so that the air quality is improved.
The radiator is an axial flow fan 17, the air quantity of the axial flow fan 17 is large, and the condenser 18 can be effectively radiated.
The filter screen subassembly is including the initial filter 3 that sets gradually, well effect filter 4 and high-efficient filter 5, through setting up the three-layer filter screen, carries out effective filtration to new trend or return air.
Be provided with the differential pressure switch on primary filter 3 and the high-efficient filter 5, the differential pressure switch is used for detecting the jam condition of filter screen subassembly, and is great when filter screen subassembly impurity, detects the differential pressure behind primary filter 3 and the high-efficient filter 5, and the differential pressure switch just works, produces the warning and reminds the staff in time to change or wash the filter screen subassembly.
The invention further comprises a control system, wherein the control system comprises a controller, a temperature sensor, a temperature and humidity sensor and a pressure sensor, wherein the temperature sensor, the temperature and humidity sensor and the pressure sensor are electrically connected with the controller, the temperature sensor is arranged between the evaporator 6 and the reheat condenser 7, the temperature and humidity sensor is arranged on the air inlet and the air outlet 11, the pressure sensor is arranged on the air suction and exhaust pipeline of the compressor 14, the controller is further electrically connected with the compressor 14, the fan 10, the axial flow fan 17, the reheat expansion valve 12, the main expansion valve 13 and the outdoor expansion valve 16, the control system realizes the automatic operation of the humidifying unit, the controller adopts an industrial control level singlechip chip, the temperature sensor, the temperature and humidity sensor and the pressure sensor are arranged on each node of the humidifying unit and are used for acquiring temperature parameters of each measuring point as control parameter basis for intelligent control of the controller, and in order to facilitate control, the reheat expansion valve 12, the main expansion valve 13 and the outdoor expansion valve 16 are preferably electronic expansion valves.
The specific working principle of the invention is as follows:
The invention has four modes of dehumidifying mode, heating mode, ventilation mode and intelligent mode, and is concretely as follows:
In the dehumidification mode, as shown in fig. 1 and 2, the refrigerant circulates in the direction indicated by an arrow in the figure, low-pressure low-temperature liquid refrigerant flows into the evaporator 6 to absorb heat of air flowing through the surface of the evaporator 6, and because the surface temperature of the evaporator 6 is lower than the dew point temperature of humid air at the moment, water vapor in the air condenses into water on the surface of the evaporator 6, drops into a water tray and then is discharged out of the unit, so that the temperature and the humidity in the air are reduced, and the temperature and the humidity are reduced and the dehumidification is performed.
As shown in fig. 2, the low-pressure low-temperature gaseous refrigerant having absorbed heat from the evaporator 6 flows into the compressor 14 through the four-way valve 15, compresses the refrigerant, changes the phase of the refrigerant into a high-temperature high-pressure gaseous refrigerant, passes through the oil separator 19, and flows out through the four-way valve 15. The high-temperature high-pressure gaseous refrigerant flowing out of the four-way valve 15 is split into a condenser 18 and a reheat condenser 7 which are connected in parallel, the high-temperature high-pressure gaseous refrigerant is changed into a liquid refrigerant with high pressure and normal temperature, the high-temperature high-pressure gaseous refrigerant entering the reheat condenser 7 heats the air cooled and dehumidified by the evaporator 6 to a specified temperature, and enters the room after being sterilized by the ultraviolet lamp 9, thereby completing the dehumidification and constant temperature functions, and other heating equipment is not required to be added again, and the other part of the high-temperature high-pressure gaseous refrigerant dissipates heat through the condenser 18 and is discharged out of the room by being matched with the axial flow fan 17.
The heating temperature of the reheat condenser 7 for air is determined by the flow rate of the high-temperature high-pressure gaseous refrigerant distributed to the reheat condenser 7, that is, by adjusting the flow rate ratio of the reheat expansion valve 12 to the main expansion valve 13, the reheat expansion valve 12 and the main expansion valve 13 are preferably opened and closed in a linkage manner, when the opening flow rate of the reheat expansion valve 12 is large, the opening flow rate of the main expansion valve 13 is small, the heating temperature of the air is high by the high-temperature high-pressure gaseous refrigerant of the reheat condenser 7, whereas the heating temperature of the air is low by the low-temperature high-pressure gaseous refrigerant of the reheat condenser 7. In the dehumidification mode, the outdoor expansion valve 16 is always closed, and the refrigerant flowing out of the condenser 18 flows into the main expansion valve 13 through the check valve connected in parallel with the outdoor expansion valve 16, and at this time, the refrigerant flows into the main expansion valve 13 only because the refrigerant flows into the check valve connected in parallel with the main expansion valve 13, and flows into the evaporator 6 after being phase-changed into a low-pressure low-temperature liquid refrigerant through the main expansion valve 13, thereby absorbing heat.
The air is dehumidified and temperature-controlled by this reciprocation.
In the dehumidification mode, the main expansion valve 13 is disposed at a side close to the evaporator 6, so that the liquid refrigerant with low pressure and low temperature is quickly introduced into the evaporator 6 to absorb heat, thereby reducing the influence of the liquid refrigerant with low pressure and low temperature on the pipeline and prolonging the service life.
In the dehumidification mode, since the air is not required to be humidified, the humidifier 8 is always in the off state.
In the dehumidification mode, the reheat expansion valve 12 is closed, and the humidity control unit cools only the air.
In the heating mode, as shown in fig. 3 and 4, the refrigerant circulates in the direction indicated by the dotted arrow in the figure, at this time, the evaporator 6 is used for heat dissipation, the condenser 18 is used for heat absorption, and the dehumidification of the air passing through the humidity control unit is not required, and the influence of the evaporator 6 and the reheat condenser 7 on the air in the indoor unit is opposite, so that the reheat condenser 7 is always closed, the reheat condenser 7 is closed by closing the reheat expansion valve 12, and the operation is simple and flexible. The low-pressure low-temperature liquid refrigerant flows into the condenser 18, the axial flow fan 17 discharges cold energy to the outside, as shown in fig. 2, the refrigerant passing through the condenser 18 flows into the compressor 14 through the four-way valve 15 for compression, the refrigerant becomes high-temperature high-pressure gaseous refrigerant and passes through the oil separator 19, and then flows out into the evaporator 6 through the four-way valve 15, the evaporator 6 dissipates heat to the air, so that the air entering from the air inlet is heated, and the heated air is added to the specified humidity through the humidifier 8, so that the indoor temperature and humidity are ensured to be proper. The high-temperature high-pressure gaseous refrigerant after passing through the evaporator 6 is transformed into high-pressure normal-temperature liquid refrigerant, and finally flows to the outdoor expansion valve 16 through the one-way valve connected with the main expansion valve 13 in parallel for depressurization, and the liquid refrigerant transformed into low-temperature low-pressure liquid refrigerant flows to the condenser 18 to take away cold energy.
With this reciprocation, the heating and humidification processing of the air is realized.
Because the outdoor expansion valve 16 is disposed at a side close to the condenser 18, the liquid refrigerant with a phase change into a low pressure and a low temperature at this time quickly enters the condenser 18 to absorb heat, so that the influence of the liquid refrigerant with a low pressure and a low temperature on the pipeline can be reduced, and the service life can be prolonged.
By adjusting the power of the compressor, the adjustment of different temperatures is realized.
The humidifier 8 may be an ultrasonic humidifier, a wet film humidifier, or other humidification device.
In the ventilation mode, in the indoor working environment requiring ventilation, only the fan 10 is started, and air sequentially passes through the filter assembly and the ultraviolet lamp 9 to be purified, so that ventilation is completed.
And in the intelligent mode, the indoor air environment is matched with a controller arranged on the damping unit, and temperature sensors, temperature and humidity sensors and pressure sensors on all nodes are used for intelligent adjustment.

Claims (9)

1.一种单冷热源新风调湿机组，其特征是，包括室内机和室外机，所述室内机包括依次设置的进风口、滤网组件、蒸发器（6）、再热冷凝器（7）、加湿器（8）、风机（10）和出风口（11），所述室外机包括四通阀（15）以及与蒸发器（6）构成回路的压缩机（14）、冷凝器（18）和室外膨胀阀（16），所述蒸发器（6）、压缩机（14）和冷凝器（18）均与四通阀（15）连接，冷凝器（18）上设置有散热器，所述再热冷凝器（7）通过管路与冷凝器（18）并联，再热冷凝器（7）靠近蒸发器（6）所在管路上设置有再热膨胀阀（12），所述蒸发器（6）与冷凝器（18）之间且靠近蒸发器（6）一侧设置有主膨胀阀（13），主膨胀阀（13）与室外膨胀阀（16）择一使用，除湿模式中，室外膨胀阀（16）关闭，主膨胀阀（13）工作，用于降低从冷凝器（18）流出的高压常温的制冷剂的压力；制热模式中，主膨胀阀（13）关闭，室外膨胀阀（16）工作，用于降低从蒸发器（6）流出的高压常温的制冷剂的压力，主膨胀阀（13）并联有朝向冷凝器（18）的单向阀，室外膨胀阀（16）并联有朝向蒸发器（6）的单向阀，所述再热膨胀阀（12）和所述主膨胀阀（13）为联动开合，所述再热膨胀阀（12）开启流量大则所述主膨胀阀（13）的开启流量小；1. A single cold and heat source fresh air humidification unit, characterized in that it comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises an air inlet, a filter assembly, an evaporator (6), a reheat condenser (7), a humidifier (8), a fan (10) and an air outlet (11) arranged in sequence, and the outdoor unit comprises a four-way valve (15) and a compressor (14), a condenser (18) and an outdoor expansion valve (16) forming a loop with the evaporator (6), the evaporator (6), the compressor (14) and the condenser (18) are all connected to the four-way valve (15), a radiator is provided on the condenser (18), the reheat condenser (7) is connected in parallel with the condenser (18) through a pipeline, a reheat expansion valve (12) is provided on the pipeline where the reheat condenser (7) is close to the evaporator (6), and the evaporator (6) and the condenser (18) are connected in parallel. A main expansion valve (13) is provided on one side of the evaporator (6), and the main expansion valve (13) and the outdoor expansion valve (16) are selectively used. In the dehumidification mode, the outdoor expansion valve (16) is closed and the main expansion valve (13) is operated to reduce the pressure of the high-pressure normal-temperature refrigerant flowing out of the condenser (18); in the heating mode, the main expansion valve (13) is closed and the outdoor expansion valve (16) is operated to reduce the pressure of the high-pressure normal-temperature refrigerant flowing out of the evaporator (6). The main expansion valve (13) is connected in parallel with a one-way valve toward the condenser (18), and the outdoor expansion valve (16) is connected in parallel with a one-way valve toward the evaporator (6). The reheat expansion valve (12) and the main expansion valve (13) are linked to open and close. When the opening flow of the reheat expansion valve (12) is large, the opening flow of the main expansion valve (13) is small. 再热膨胀阀（12）和所述主膨胀阀（13）并联。The reheat expansion valve (12) and the main expansion valve (13) are connected in parallel. 2.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述冷凝器（18）和再热冷凝器（7）靠近蒸发器（6）一侧管路上均设置有过滤器。2. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that filters are provided on the pipelines of the condenser (18) and the reheat condenser (7) on the side close to the evaporator (6). 3.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述进风口包括与室内空气连通的回风风阀（1）和与室外空气连通的新风风阀（2）。3. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that the air inlet includes a return air valve (1) connected to the indoor air and a fresh air valve (2) connected to the outdoor air. 4.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述加湿器（8）与风机（10）之间还设置有紫外灯（9）。4. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that an ultraviolet lamp (9) is further provided between the humidifier (8) and the fan (10). 5.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述风机（10）为离心风机。5. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that the fan (10) is a centrifugal fan. 6.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述散热器为轴流风机（17）。6. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that the radiator is an axial flow fan (17). 7.如权利要求1所述的单冷热源新风调湿机组，其特征是，所述滤网组件包括依次设置的初效过滤器（3）、中效过滤器（4）和高效过滤器（5）。7. The single cold and heat source fresh air humidification unit according to claim 1, characterized in that the filter assembly comprises a primary filter (3), a medium efficiency filter (4) and a high efficiency filter (5) arranged in sequence. 8.如权利要求7所述的单冷热源新风调湿机组，其特征是，所述初效过滤器（3）和高效过滤器（5）上设置有风压差开关。8. The single cold and heat source fresh air humidification unit according to claim 7, characterized in that a wind pressure difference switch is provided on the primary filter (3) and the high efficiency filter (5). 9.如权利要求1所述的单冷热源新风调湿机组，其特征是，还包括控制系统，所述控制系统包括控制器以及与控制器电连接的温度传感器、温湿度传感器和压力传感器，所述温度传感器设置于所述蒸发器（6）与再热冷凝器（7）之间，所述温湿度传感器设置于进风口和出风口（11）上，所述压力传感器设置于压缩机（14）吸排气管路上，所述控制器还与压缩机（14）、风机（10）和散热器电连接。9. The single cold and heat source fresh air humidification unit according to claim 1 is characterized in that it also includes a control system, the control system includes a controller and a temperature sensor, a temperature and humidity sensor and a pressure sensor electrically connected to the controller, the temperature sensor is arranged between the evaporator (6) and the reheat condenser (7), the temperature and humidity sensors are arranged on the air inlet and the air outlet (11), the pressure sensor is arranged on the compressor (14) suction and exhaust pipes, and the controller is also electrically connected to the compressor (14), the fan (10) and the radiator.
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