CN110131828A - A multi-connected system and its cooling method suitable for the inner area of southern buildings - Google Patents

A multi-connected system and its cooling method suitable for the inner area of southern buildings Download PDF

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Publication number
CN110131828A
CN110131828A CN201910431074.3A CN201910431074A CN110131828A CN 110131828 A CN110131828 A CN 110131828A CN 201910431074 A CN201910431074 A CN 201910431074A CN 110131828 A CN110131828 A CN 110131828A
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air
valve
machine
fresh air
outdoor
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李永斌
倪丹
施孝增
施逵
张震
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F24F11/47—Responding to energy costs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Central Air Conditioning (AREA)
  • Ventilation (AREA)

Abstract

本发明公开了一种适用于南方建筑内区的多联机系统及供冷方法，其特征在于：包括多联机室外机、多联机室内机、多联机新风处理机、送风机、排风机、显热交换机、温度传感器，所述多联机新风处理机和送风机通过送风管并联连接，多联机室外机通过冷媒管中的制冷剂将热量或冷量传递至多联机室内机或多联机新风处理机，室内空气依次通过排风口、排风管和排风机排至室外。本发明夏季高效制冷，春秋季和冬季充分利用室外低温空气消除室内多余的热量，利用置换通风系统提高室内空气品质以及室内人员舒适度，利用显热交换机对室内能量进行热回收，减少多联机室内机的能耗和开启时间，在春秋季通过温度传感器调节送风机和排风机的转速，整个系统高效节能。

The invention discloses a multi-connection system and a cooling method suitable for the inner area of a southern building, which is characterized in that it includes a multi-connection outdoor unit, a multi-connection indoor unit, a multi-connection fresh air processor, a blower fan, an exhaust fan, and a sensible heat exchanger , a temperature sensor, the multi-connected fresh air processor and the blower are connected in parallel through the air supply pipe, the multi-connected outdoor unit transfers heat or cold to the multi-connected indoor unit or the multi-connected fresh air processor through the refrigerant in the refrigerant pipe, and the indoor air It is exhausted to the outside through the exhaust outlet, exhaust pipe and exhaust fan in turn. The invention has high-efficiency cooling in summer, fully utilizes outdoor low-temperature air in spring, autumn and winter to eliminate excess heat in the room, uses the displacement ventilation system to improve indoor air quality and the comfort of indoor personnel, uses sensible heat exchangers to recover indoor energy, and reduces the number of multi-connected indoors. The energy consumption and opening time of the air conditioner are adjusted, and the temperature sensor is used to adjust the speed of the blower and exhaust fan in spring and autumn, so that the whole system is highly efficient and energy-saving.

Description

一种适用于南方建筑内区的多联机系统及其供冷方法A multi-connected system and its cooling method suitable for the inner area of southern buildings

技术领域technical field

本发明涉及建筑内区供冷领域，公开了一种适用于南方建筑内区的多联机系统及其供冷方法。The invention relates to the field of cooling for building inner areas, and discloses a multi-connection system and a cooling method for inner areas of buildings in the south.

背景技术Background technique

建筑内区基本不受室外气温的影响，主要由人体、设备、灯光等散热形成大量余热，即便在冬季，室内温度仍然会偏高，导致室内环境不舒适，故在冬季内区也需消除冷负荷，室外低温空气可作为免费的冷源，在春秋季及冬季为建筑内区消除余热。南方冬季室外阴冷潮湿，所以空调系统不需要额外的加湿功能也能满足室内的湿度要求。显热交换机是可回收排风热能并用于重新送风的新风设备，通过高效换热，达到引入室外新风的同时，降低能耗的目的。置换通风不仅能够提供良好的气流组织，营造舒适的热湿环境，而且经济节能，是一种理想的通风形式。The inner area of the building is basically not affected by the outdoor temperature. It is mainly caused by the heat dissipation of the human body, equipment, and lighting to form a large amount of waste heat. Even in winter, the indoor temperature will still be high, resulting in an uncomfortable indoor environment. load, the outdoor low-temperature air can be used as a free cold source to eliminate waste heat for the interior of the building in spring, autumn and winter. It is cold and humid outdoors in winter in the south, so the air conditioning system can meet the indoor humidity requirements without additional humidification function. The sensible heat exchanger is a fresh air device that can recover the heat energy of the exhaust air and use it for re-supplying the air. Through efficient heat exchange, it achieves the purpose of reducing energy consumption while introducing outdoor fresh air. Displacement ventilation can not only provide good airflow organization and create a comfortable hot and humid environment, but also is economical and energy-saving. It is an ideal form of ventilation.

发明内容Contents of the invention

为了解决现有技术存在的缺陷，本发明提供一种适用于南方建筑内区的多联机系统及供冷方法。In order to solve the defects in the prior art, the present invention provides a multi-connected system and a cooling method suitable for the interior area of southern buildings.

本发明的目的是通过以下技术方案来实现：一种适用于南方建筑内区的多联机系统，包括多联机室外机、多联机室内机，其特征在于所述多联机系统还包括多联机新风处理机，多联机室外机通过冷媒管与多联机室内机和多联机新风处理机相连，所述多联机新风处理机与送风机并联设置，其一端通过显热交换机连接室外，另一端则通过送风管连接至置换送风口，排风口通过排风管依次连接排风机、显热交换机；多联机室外机通过冷媒管中的制冷剂将热量或冷量传递至多联机室内机或多联机新风处理机后通过送风口送至室内，室内空气依次通过排风口、排风管和排风机排至室外，显热交换机用于室外新风和室内排出空气之间进行热交换。The object of the present invention is achieved through the following technical solutions: a multi-connection system suitable for the inner area of southern buildings, including multi-connection outdoor units and multi-connection indoor units, characterized in that the multi-connection system also includes multi-connection fresh air processing The multi-connected outdoor unit is connected to the multi-connected indoor unit and the multi-connected fresh air processor through refrigerant pipes. The multi-connected fresh air processor and the blower are set in parallel. Connect to the replacement air supply port, and the exhaust port is connected to the exhaust fan and the sensible heat exchanger in turn through the exhaust pipe; the multi-connected outdoor unit transfers heat or cold to the multi-connected indoor unit or the multi-connected fresh air processor through the refrigerant in the refrigerant pipe It is sent to the room through the air supply port, and the indoor air is exhausted to the outside through the air exhaust port, the exhaust pipe and the exhaust fan in turn. The sensible heat exchanger is used for heat exchange between the outdoor fresh air and the indoor exhaust air.

进一步地， 多联机室外机和多联机室内机之间设有第一阀门，多联机室外机和多联机新风处理机之间设有第二阀门，多联机新风处理机和显热交换机之间设置第三阀门，送风机和显热交换机之间设置第四阀门，显热交换机设有与其并联的第五阀门。Further, a first valve is provided between the multi-connected outdoor unit and the multi-connected indoor unit, a second valve is provided between the multi-connected outdoor unit and the multi-connected fresh air processor, and a valve is set between the multi-connected fresh air processor and the sensible heat exchanger. The third valve is a fourth valve arranged between the air blower and the sensible heat exchanger, and the sensible heat exchanger is provided with a fifth valve connected in parallel with it.

进一步地，所述置换送风口贴地设置，置换送风口的风量在150m3/h~3000 m3/h之间，所述排风管和排风口布置在建筑内区的上部。Further, the replacement air outlet is arranged close to the ground, the air volume of the replacement air outlet is between 150m 3 /h~3000m 3 /h, and the exhaust pipe and the air outlet are arranged in the upper part of the inner area of the building.

进一步地，室内设有温度传感器。Further, a temperature sensor is provided in the room.

进一步地，送风机和排风机均为变频风机，在春秋季，温度传感器检测室内温度高低，通过控制送风机和排风机的转速，控制进入建筑内区的风量，以达到控制建筑内区恒温的目的。Furthermore, both the blower fan and the exhaust fan are variable frequency fans. In spring and autumn, the temperature sensor detects the indoor temperature. By controlling the speed of the blower fan and the exhaust fan, the air volume entering the inner area of the building is controlled to achieve the purpose of controlling the constant temperature of the inner area of the building.

进一步地，当室外空气大于22℃且空气焓值大于43kJ/kg时，认定为夏季，第一阀门、第二阀门和第三阀门打开，第四阀门和第五阀门关闭，多联机室内机承担室内冷湿负荷，多联机新风处理机承担承担新风负荷，通过送风管和置换送风口，多联机新风处理机将降温减湿的室外新风以低流速的形式送入到建筑内区；Furthermore, when the outdoor air is greater than 22°C and the enthalpy of the air is greater than 43kJ/kg, it is considered to be summer, the first valve, the second valve and the third valve are opened, the fourth valve and the fifth valve are closed, and the multi-connected indoor unit assumes For the indoor cooling and humidity load, the multi-line fresh air processor is responsible for the fresh air load. Through the air supply pipe and the replacement air outlet, the multi-line fresh air processor sends the outdoor fresh air with cooling and dehumidification to the inner area of the building in the form of low flow rate;

当室外空气小于18℃且空气焓值小于35kJ/kg时，认定为冬季，第二阀门、第三阀门打开，第一阀门、第四阀门和第五阀门关闭，此时利用室外低温空气供冷，来替代人工冷源，由于此时室外空气温度较低，利用显热交换机初步加热室外新风，再利用多联机新风处理机将新风加热后，再将新风送入室内，避免因送风温度过低而降低人员舒适度，此时多联机室内机停止工作；When the outdoor air is less than 18°C and the air enthalpy is less than 35kJ/kg, it is considered winter, the second valve and the third valve are opened, and the first valve, the fourth valve and the fifth valve are closed. At this time, the outdoor low-temperature air is used for cooling , to replace the artificial cooling source. Since the outdoor air temperature is low at this time, use the sensible heat exchanger to initially heat the outdoor fresh air, and then use the multi-line fresh air processor to heat the fresh air, and then send the fresh air into the room to avoid excessive air temperature. Low and reduce personnel comfort, at this time the multi-connected indoor unit stops working;

当室外工况处于其他状态点时，认定为春秋季，第四阀门、第五阀门打开，第一阀门、第二阀门、第三阀门关闭，多联机室外机、多联机室内机、多联机新风处理机、显热交换机停止工作，室外新风流经送风机直接送入至室内。When the outdoor working condition is at other state points, it is considered as spring and autumn, the fourth valve and the fifth valve are opened, the first valve, the second valve, and the third valve are closed, and the multi-connected outdoor unit, multi-connected indoor unit, and multi-connected fresh air The processor and the sensible heat exchanger stop working, and the outdoor fresh air flows directly into the room through the blower.

本发明根据南方潮湿的特点，整个系统不提供加湿的功能，减少设备费用；多联机新风处理机和送风机通过送风管并联连接，在冬夏季，室外新风经过多联机新风处理机的处理，送入室内，在春秋季，室外新风经过送风机直接送到室内；所述显热交换机只能进行温度交换，夏季将室内低温排风和室外高温新风进行温度交换，降低送入至室内的新风温度，冬季将室内高温排风和室外低温新风进行温度交换，提高送入至室内的新风温度，减少多联机室外机的工作时间，节约能耗。According to the characteristics of humidity in the south, the present invention does not provide humidification function in the whole system, which reduces the cost of equipment; the multi-line fresh air processor and the blower are connected in parallel through the air supply pipe, and in winter and summer, the outdoor fresh air is processed by the multi-line fresh air processor to send Into the room, in spring and autumn, the outdoor fresh air is sent directly to the room through the blower; the sensible heat exchanger can only perform temperature exchange, and in summer, the indoor low-temperature exhaust air and the outdoor high-temperature fresh air are exchanged to reduce the temperature of the fresh air sent into the room. In winter, the indoor high-temperature exhaust air and the outdoor low-temperature fresh air are exchanged to increase the temperature of the fresh air sent into the room, reduce the working hours of multi-connected outdoor units, and save energy consumption.

本发明的有益效果：充分利用室外低温空气作为免费制冷冷源，利用显热交换机进行排风热回收，且利用置换通风系统，将室外低温空气送到内区，在制冷的同时也可以提高房间内的空气品质，增加人体的舒适度，送风机和排风机均为变频风机，可以根据房间温度控制风机转速，减少空调系统的能耗。Beneficial effects of the present invention: make full use of outdoor low-temperature air as a free cooling source, use sensible heat exchangers to recover exhaust heat, and use the replacement ventilation system to send outdoor low-temperature air to the inner area, which can also improve room temperature while cooling. The air quality in the room increases the comfort of the human body. Both the blower fan and the exhaust fan are variable frequency fans, which can control the fan speed according to the room temperature and reduce the energy consumption of the air conditioning system.

附图说明Description of drawings

图1是一种适用于南方建筑内区的多联机系统及供冷方法图。Figure 1 is a diagram of a multi-connected system and cooling method suitable for the interior area of southern buildings.

图2是一种适用于南方建筑内区的多联机系统及供冷方法建筑内区平面布置图。Fig. 2 is a floor plan of a multi-connected system and a cooling method suitable for the inner area of a building in the south.

具体实施方式Detailed ways

参照附图1至附图2与实施例，对本发明作进一步详细描述：With reference to accompanying drawing 1 to accompanying drawing 2 and embodiment, the present invention is described in further detail:

图中1多联机室外机，2多联机室内机，3多联机新风处理机，4送风机，5排风机，6送风管，7排风管，8置换送风口，9排风口，10冷媒管，11显热交换机，12温度传感器，13导线。In the figure, 1 multi-connected outdoor unit, 2 multi-connected indoor unit, 3 multi-connected fresh air processor, 4 air supply fan, 5 exhaust fan, 6 air supply pipe, 7 exhaust air pipe, 8 replacement air supply port, 9 air exhaust port, 10 refrigerant tube, 11 sensible heat exchangers, 12 temperature sensors, 13 wires.

一种适用于南方建筑内区的多联机系统及供冷方法，其特征在于：包括多联机室外机1、多联机室内机2、多联机新风处理机3、送风机4、排风机5、显热交换机11、温度传感器12，所述多联机新风处理机3和送风机4通过送风管6并联连接，多联机室外机1通过冷媒管10中的制冷剂将热量或冷量传递至多联机室内机2或多联机新风处理机3，室内空气依次通过排风口9、排风管7和排风机5排至室外；A multi-connection system and cooling method suitable for the inner area of southern buildings, characterized in that it includes a multi-connection outdoor unit 1, a multi-connection indoor unit 2, a multi-connection fresh air processor 3, a blower 4, an exhaust fan 5, sensible heat The switch 11, the temperature sensor 12, the multi-connected fresh air processor 3 and the blower 4 are connected in parallel through the air supply pipe 6, and the multi-connected outdoor unit 1 transfers heat or cooling to the multi-connected indoor unit 2 through the refrigerant in the refrigerant pipe 10 Or multi-line fresh air processor 3, the indoor air is discharged to the outside through the air outlet 9, the exhaust pipe 7 and the exhaust fan 5 in sequence;

根据南方潮湿的特点，整个系统不提供加湿的功能，减少设备费用；According to the characteristics of humidity in the south, the whole system does not provide humidification function to reduce equipment costs;

多联机新风处理机3和送风机4通过送风管6并联连接，在冬夏季，室外新风经过多联机新风处理机3的处理，送入室内，在春秋季，室外新风经过送风机4直接送到室内；The multi-line fresh air processor 3 and the blower 4 are connected in parallel through the air supply pipe 6. In winter and summer, the outdoor fresh air is processed by the multi-line fresh air processor 3 and then sent indoors. In spring and autumn, the outdoor fresh air is directly sent indoors through the blower 4. ;

所述显热交换机11只能进行温度交换，夏季将室内低温排风和室外高温新风进行温度交换，降低送入至室内的新风温度，冬季将室内高温排风和室外低温新风进行温度交换，提高送入至室内的新风温度，减少多联机室外机1的工作时间，节约能耗；The sensible heat exchanger 11 can only perform temperature exchange. In summer, the indoor low-temperature exhaust air and outdoor high-temperature fresh air are exchanged to reduce the temperature of fresh air sent into the room. In winter, the indoor high-temperature exhaust air and outdoor low-temperature fresh air are exchanged to increase the temperature. The temperature of the fresh air sent to the room reduces the working time of the multi-connected outdoor unit 1 and saves energy consumption;

所述置换送风口8贴地设置，每个置换送风口8根据尺寸的不同，风量在150m3/h~3000m3/h之间可选择；The replacement air supply outlet 8 is set close to the ground, and each replacement air supply outlet 8 can be selected between 150m 3 /h~3000m 3 /h according to the size;

所述排风管7和排风口9布置在建筑内区的上部，使得能够快速排走聚集在房间上部的热浊空气；The exhaust pipe 7 and the air outlet 9 are arranged on the upper part of the building inner area, so that the hot and stale air accumulated in the upper part of the room can be quickly exhausted;

当室外空气大于22℃且空气焓值大于43kJ/kg时，认定为夏季，多联机室内机2承担室内冷湿负荷，多联机新风处理机3承担承担新风负荷，通过送风管6和置换送风口8，多联机新风处理机3将降温减湿的室外新风以低流速的形式送入到建筑内区，此时第一阀门F1、第二阀门F2、第三阀门F3打开，第四阀门F4、第五阀门F5关闭；When the outdoor air is greater than 22°C and the air enthalpy is greater than 43kJ/kg, it is considered to be summer, and the multi-connection indoor unit 2 bears the indoor cooling and humidity load, and the multi-connection fresh air processor The air outlet 8 and the multi-connected fresh air processor 3 send the outdoor fresh air with cooling and dehumidification to the inner area of the building at a low flow rate. At this time, the first valve F1, the second valve F2, and the third valve F3 are opened, and the fourth valve F4 is opened. , the fifth valve F5 is closed;

当室外空气小于18℃且空气焓值小于35kJ/kg时，认定为冬季，此时利用室外低温空气供冷，来替代人工冷源，由于此时室外空气温度较低，利用显热交换机11初步加热室外新风，再利用多联机新风处理机3将室外新风加热至18℃后，再将新风送入室内，避免因送风温度过低而降低人员舒适度，此时多联机室内机2停止工作，第二阀门F2、第三阀门F3打开，第一阀门F1、第四阀门F4、第五阀门F5关闭；When the outdoor air is less than 18°C and the enthalpy of the air is less than 35kJ/kg, it is considered as winter. At this time, the outdoor low-temperature air is used for cooling instead of the artificial cold source. Since the outdoor air temperature is low at this time, the sensible heat exchanger 11 is used for preliminary Heat the outdoor fresh air, and then use the multi-connected fresh air processor 3 to heat the outdoor fresh air to 18°C, and then send the fresh air into the room to avoid reducing the comfort of personnel due to the low temperature of the air supply. At this time, the multi-connected indoor unit 2 stops working , the second valve F2, the third valve F3 are opened, the first valve F1, the fourth valve F4, and the fifth valve F5 are closed;

当室外工况处于其他状态点时，认定为春秋季，多联机室外机1、多联机室内机2、多联机新风处理机3、显热交换机11停止工作，室外新风流经送风机直接送入至室内，此时第四阀门F4、第五阀门F5打开，第一阀门F1、第二阀门F2、第三阀门F3关闭；When the outdoor working condition is at other state points, it is considered as spring and autumn, and the multi-connection outdoor unit 1, multi-connection indoor unit 2, multi-connection fresh air processor 3, and sensible heat exchanger 11 stop working, and the outdoor fresh air flows through the blower and is directly sent to the Indoor, at this moment, the fourth valve F4 and the fifth valve F5 are opened, and the first valve F1, the second valve F2 and the third valve F3 are closed;

送风机4和排风机5均为变频风机，在春秋季，温度传感器12检测室内温度大小，通过控制送风机4和排风机5的转速，控制进入建筑内区的风量，以达到控制建筑内区恒定在21℃或者人员设定温度的目的。Both the air supply fan 4 and the exhaust fan 5 are variable frequency fans. In spring and autumn, the temperature sensor 12 detects the indoor temperature. 21°C or the purpose of setting the temperature by personnel.

实施例Example

实施例1：当室外空气大于22℃且空气焓值大于43kJ/kg时，认定为夏季，多联机室外机1为制冷模式，冷媒管10中的制冷剂将冷量提供给多联机室内机2和多联机新风处理机3，多联机室内机2承担室内的冷湿负荷，对室内空气进行降温减湿处理，使得室内温度维持在18℃或者室内人员设定温度，而多联机新风处理机3承担新风负荷，将室外洁净空气处理至23℃后，以0.25m/s的风速通过置换送风口8送入到室内，室外高温新风先经过显热交换机11的初步降温后，再进入到多联机新风处理机3，此时第一阀门F1、第二阀门F2、第三阀门F3打开，第四阀门F4、第五阀门F5关闭。Example 1: When the outdoor air is greater than 22°C and the air enthalpy is greater than 43kJ/kg, it is considered to be summer, and the multi-connected outdoor unit 1 is in cooling mode, and the refrigerant in the refrigerant pipe 10 provides cooling capacity to the multi-connected indoor unit 2 And the multi-connected fresh air processor 3, the multi-connected indoor unit 2 bears the indoor cooling and humidity load, and performs cooling and dehumidification treatment on the indoor air, so that the indoor temperature is maintained at 18°C or the temperature set by the indoor personnel, while the multi-connected fresh air processor 3 Undertake the fresh air load, after the outdoor clean air is treated to 23°C, it is sent into the room through the replacement air outlet 8 at a wind speed of 0.25m/s. The outdoor high-temperature fresh air first passes through the sensible heat exchanger 11 for initial cooling, and then enters the multi-line In the fresh air processor 3, the first valve F1, the second valve F2, and the third valve F3 are opened, and the fourth valve F4 and the fifth valve F5 are closed.

实施例2：当室外空气小于18℃且空气焓值小于35kJ/kg时，认定为冬季，但是建筑内区存在大量的冷负荷，所以仍需进行降温处理，如果此时直接将室外低温空气送入室内，送风温度较低，可能会对人员产生不适感，所以此时利用显热交换机11初步加热室外新风，再利用多联机新风处理机3将室外新风加热至18℃后，再将新风送入室内，避免因送风温度过低而降低人员舒适度，此时多联机室内机2停止工作，第二阀门F2、第三阀门F3打开，第一阀门F1、第四阀门F4、第五阀门F5关闭；Example 2: When the outdoor air is less than 18°C and the enthalpy of the air is less than 35kJ/kg, it is considered winter, but there is a large amount of cooling load in the inner area of the building, so cooling treatment is still required. If the outdoor low-temperature air is directly sent to the When entering the room, the temperature of the air supply is low, which may cause discomfort to the personnel. Therefore, at this time, the sensible heat exchanger 11 is used to initially heat the outdoor fresh air, and then the multi-line fresh air processor 3 is used to heat the outdoor fresh air to 18°C. to avoid reducing the comfort of personnel due to the low temperature of the air supply. At this time, the multi-connected indoor unit 2 stops working, the second valve F2 and the third valve F3 are opened, the first valve F1, the fourth valve F4, and the fifth valve are opened. Valve F5 is closed;

实施例3：当室外工况处于其他状态点时，认定为春秋季，多联机室外机1、多联机室内机2、多联机新风处理机3、显热交换机4停止工作，送风机4直接将室外空气送入室内，室内热浊空气通过设置于房间上部的排风口9和排风管7排出室外，温度传感器12检测室内温度大小，通过控制送风4和排风机5的转速，控制进入建筑内区的风量，以达到控制建筑内区恒定在21℃或者人员设定温度的目的，此时第四阀门F4、第五阀门F5打开，第一阀门F1、第二阀门F2、第三阀门F3关闭。Example 3: When the outdoor working condition is at other state points, it is considered as spring and autumn, multi-connected outdoor unit 1, multi-connected indoor unit 2, multi-connected fresh air processor 3, and sensible heat exchanger 4 stop working, and the blower 4 directly turns the outdoor The air is sent into the room, and the indoor hot and dirty air is discharged outside through the exhaust outlet 9 and the exhaust pipe 7 arranged on the upper part of the room. The temperature sensor 12 detects the indoor temperature. The air volume of the inner area is to achieve the purpose of controlling the inner area of the building at 21°C or the temperature set by personnel. At this time, the fourth valve F4 and the fifth valve F5 are opened, and the first valve F1, the second valve F2, and the third valve F3 closure.

上述虽然结合附图对本发明的具体实施方式进行了描述，但并非对发明保护范围的限制，所属领域技术人员应该明白，在本发明的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围内。Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the scope of protection of the invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (7)

1. a kind of multi-line system suitable for south building inner region, including multi-connected machine outdoor unit, multi-online indoor machine, feature It is that the multi-line system further includes multi-connected machine fresh air processor, multi-connected machine outdoor unit passes through refrigerant pipe and multi-online indoor machine It is connected with multi-connected machine fresh air processor, the multi-connected machine fresh air processor is arranged in parallel with pressure fan, and one end is handed over by sensible heat It changes planes outside junction chamber, the other end then passes through air supply tube and is connected to replaceable ventilating opening, and exhaust outlet is sequentially connected air draft by air-exhausting duct Machine, Exchange of apparent heat machine；Heat or cooling capacity are transferred to multi-online indoor machine by the refrigerant in refrigerant pipe by multi-connected machine outdoor unit Or it is sent to the room by air outlet after multi-connected machine fresh air processor, room air passes sequentially through exhaust outlet, air-exhausting duct and exhaust blower Outdoor is drained into, Exchange of apparent heat machine is for carrying out heat exchange between outdoor fresh air and indoor discharge air.
2. a kind of multi-line system suitable for south building inner region according to claim 1, it is characterised in that: described to set It is arranged with changing air outlet patch, the air quantity of replaceable ventilating opening is in 150m3/h~3000 m3Between/h, the air-exhausting duct and exhaust outlet cloth It sets on the top of building inner region.
3. a kind of multi-line system suitable for south building inner region according to claim 1, it is characterised in that: multi-connected machine It is equipped with the first valve between outdoor unit and multi-online indoor machine, the is equipped between multi-connected machine outdoor unit and multi-connected machine fresh air processor Two valves are arranged third valve, set between pressure fan and Exchange of apparent heat machine between multi-connected machine fresh air processor and Exchange of apparent heat machine The 4th valve is set, Exchange of apparent heat machine is equipped with the 5th valve connected in parallel.
4. a kind of multi-line system suitable for south building inner region according to claim 1, it is characterised in that: interior is set There is temperature sensor.
5. a kind of multi-line system suitable for south building inner region according to claim 1, it is characterised in that: pressure fan It is frequency conversion fan with exhaust blower.
6. it is according to claim 1 it is a kind of suitable for south building inner region multi-line system for cooling method, feature Be: when outdoor air, which is greater than 22 DEG C and air enthalpy, is greater than 43kJ/kg, regarding as summer, the first valve, the second valve and Third valve is opened, and the 4th valve and the 5th valve are closed, and multi-online indoor machine undertakes indoor cold humidity load, at multi-connected machine fresh air Reason machine undertakes new wind load, and by air supply tube and replaceable ventilating opening, multi-connected machine fresh air processor is by the outdoor of cooling and dehumidification Fresh air is sent to building inner region in the form of low flow velocity；
When outdoor air is less than 18 DEG C and air enthalpy is less than 35kJ/kg, winter is regarded as, the second valve, third valve are beaten It opens, the first valve, the 4th valve and the 5th valve are closed, at this time using outdoor Cryogenic air cooling supply, to substitute artificial cold source, by It is lower in outside air temperature at this time, using fresh air outside Exchange of apparent heat machine preliminary heating chamber, recycle multi-connected machine fresh air processor After fresh air is heated, then fresh air feeding is indoor, it avoids reducing personnel's comfort level because supply air temperature is too low, at this time multi-connected machine room Interior machine stops working；
When outdoor operating condition is in other state points, spring and autumn is regarded as, the 4th valve, the 5th valve are opened, the first valve, the Two valves, third valve are closed, and multi-connected machine outdoor unit, multi-online indoor machine, multi-connected machine fresh air processor, Exchange of apparent heat machine stop Work, outdoor fresh air flow through pressure fan and are sent directly into interior.
7. according to claim 6 for cooling method, it is characterised in that: pressure fan and exhaust blower are frequency conversion fan, in the spring Autumn, temperature sensor detect room temperature height, and by controlling the revolving speed of pressure fan and exhaust blower, control enters building inner region Air quantity, with achieve the purpose that control building inner region constant temperature.
CN201910431074.3A 2019-05-22 2019-05-22 A multi-connected system and its cooling method suitable for the inner area of southern buildings Pending CN110131828A (en)

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