CN205783547U - The clean air conditioner energy-saving control system controlled based on indoor dew point temperature - Google Patents

Abstract

The utility model discloses an energy-saving control system for a clean air conditioner based on indoor dew point temperature control, which includes an air conditioner unit, a detection device and a controller. The cooler is provided with an electric surface cooling valve; the detection device includes a temperature sensor installed in the room to detect the wall temperature and a temperature and humidity sensor to detect the indoor air humidity and temperature; the controller communicates with the temperature sensor and the temperature and humidity sensor signal connected to control and adjust the opening of the electric surface cooling valve according to the wall temperature and the indoor humidity and temperature. The clean air-conditioning energy-saving control system of the utility model has no fresh air load in the shutdown stage and saves energy. Moreover, the return air is fully utilized, the operation is economical, and the management is convenient. In addition, the use of dew point air supply solves the problem of condensation and dripping when fresh air directly enters the room and encounters low-temperature walls when the air-conditioning unit is shut down.

Description

Clean air-conditioning energy-saving control system based on indoor dew point temperature control

technical field

The utility model relates to a clean air conditioner, in particular to an energy-saving control system for a clean air conditioner based on indoor dew point temperature control.

Background technique

Compared with ordinary air conditioners, clean air conditioners not only have the function of ordinary air conditioners but also play the role of air purification. Clean air-conditioning systems are generally divided into three types: centralized, semi-centralized and decentralized clean air-conditioning systems. The fresh air from the outside passes through the filter to filter dust and debris, mixes with the return air from the clean room, passes through the primary filter, and then passes through the surface cooling section and heating section for constant temperature dehumidification treatment, then passes through the medium effect filter, and then passes through the After humidification in the humidification section, it enters the air supply pipe, passes through the muffler behind the air supply pipe to reduce noise, and then sends it to the high-efficiency filter at the end of the pipe and then enters the room. After the pipeline is mixed with the fresh air, it enters the circulation before the primary filter. Clean air conditioners are widely used in rooms and buildings that have strict requirements on cleanliness, temperature, humidity, and pressure control, such as medical clean operating rooms, pharmaceutical raw material workshops, and silicon wafer fields.

In order to facilitate management and ensure the normal operation of the clean air conditioning system, except for special circumstances, it is generally advisable to consider adopting a centralized air purification system first. Clean air conditioners need to focus on ensuring the cleanliness of indoor air. A large amount of fresh and clean air is needed to dilute harmful gases in the room and maintain positive pressure in the room. Therefore, the air volume required is much larger than that of general air conditioning systems. In addition to the heat and humidity treatment of the fresh air, the air-conditioning unit must also perform multi-stage high-efficiency filtration and purification. The fresh air load accounts for a particularly prominent proportion of the energy consumption of the clean air-conditioning system. When the clean air conditioner enters the stage of production from production, the exhaust fan unit still needs to be turned on due to the generation of harmful gases. If the air conditioner unit is stopped, the outdoor fresh air will be directly drawn into the room by the fresh fan, and the fresh air entering the room will meet the low-temperature wall of the clean room Condensation and dripping will occur sometimes, resulting in the shutdown of the air conditioning unit. Therefore, it is generally not dare to shut down the clean air conditioner during the production stage, which causes a lot of waste in the operation of the air conditioner unit.

In particular, there are no high requirements on temperature, humidity and cleanliness during the production period. If the control method is still used during the production period, the energy consumption of the air-conditioning unit is still high, and the refrigeration system still needs to be operated in conjunction with it. At this time, the load is small and the refrigeration equipment Operates in the inefficient zone.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art and provide a clean air-conditioning energy-saving control system based on indoor dew point temperature control, which can not only solve the problem of dew condensation and dripping water to the greatest extent, but also reduce the operation of air-conditioning units to the greatest extent. energy consumption.

The technical solution adopted by the utility model to solve the existing technical problems is: a clean air-conditioning energy-saving control system based on indoor dew point temperature control, including:

An air-conditioning unit, the air-conditioning unit includes a surface cooling section, the surface cooling section is provided with a surface cooler, and the surface cooler is provided with an electric surface cooling valve;

A detection device, which includes a temperature sensor installed indoors to detect wall temperature and a temperature and humidity sensor to detect indoor air humidity and temperature;

A controller, the controller is signal-connected with the temperature sensor and the temperature and humidity sensor, and is used to control and adjust the opening degree of the electric counter cooling valve according to the wall temperature and the indoor humidity and temperature.

Preferably, it also includes an air inlet section, a new return air mixing section and an air supply section, and the air inlet section, the new return air mixing section, the surface cooling section and the air supply section are sequentially arranged along the fresh air flow direction;

The air inlet section is provided with an air inlet, the air inlet is provided with an electric fresh air valve, the new return mixing section is provided with an air return port, the air return port is provided with an electric return air valve, and the return air port passes through a The air duct is connected to the room;

The air supply section is provided with a blower, and the blower is provided with a frequency converter for frequency conversion regulation of the blower;

The controller is signal-connected with the electric fresh air valve, electric return air valve, and frequency converter.

Preferably, it also includes a humidification section and a heating section; the air supply section, humidification section and heating section are sequentially arranged along the fresh air flow direction;

The humidification section is provided with a humidifier, and the humidifier is provided with a humidification control valve for controlling the switch of the humidifier;

The heating section is provided with a heater and an air outlet, the heater is provided with an electric heating valve for controlling the switch of the heater, and the air outlet is connected to the room;

The controller is signal-connected with the humidification control valve and the electric heating valve.

Preferably, an exhaust fan is also included, and the exhaust fan is used to exhaust the air in the room to the outside.

Preferably, the frequency lower limit of the frequency converter is 25HZ, and the upper limit is 50HZ.

According to the clean air-conditioning energy-saving control system based on indoor dew point temperature control provided by the utility model, the temperature sensor detects the indoor wall temperature, the temperature and humidity sensor detects the indoor temperature and humidity, and the controller outputs control signals to the electric motor according to the wall temperature, indoor temperature and humidity. The surface cooling valve adjusts its opening, and then controls the dew point temperature in the room to be higher than the wall temperature, and finally achieves the purpose of preventing condensation and dripping when the fresh air is directly drawn into the room and encounters low temperature and sticks to the wall. The utility model solves the problem that the air-conditioning unit dare not shut down due to the problem of dew condensation and water dripping.

Description of drawings

Fig. 1 is a schematic structural diagram of an energy-saving control system for a clean air conditioner based on indoor dew point temperature control according to an embodiment of the present invention.

Reference signs:

Air conditioning unit 10;

surface cooler 101;

Electric cooling valve 1011;

air inlet 102;

Electric fresh air valve 1021;

Air return port 103;

Electric air return valve 1031;

Blower 104;

Inverter 1041;

Humidifier 105;

Humidification control valve 1051;

Heater 106;

Electric heating valve 1061;

return air pipe 107;

Temperature and humidity sensor 20;

temperature sensor 21;

controller 30;

Exhaust fan 40.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In addition, terms such as "mounted", "connected", "connected" and "fixed" should be interpreted in a broad sense, for example, it may be a fixed connection or a detachable connection, or an integral Ground connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to FIG. 1 , an embodiment of the utility model provides an energy-saving control system for a clean air conditioner based on indoor dew point temperature control, including an air conditioner unit 10 , a detection device and a controller 30 .

Specifically, the air conditioning unit 10 includes a surface cooling section, the surface cooling section is provided with a surface cooler 101 , and the surface cooler 101 is provided with an electric surface cooling valve 1011 . The detecting device includes a temperature sensor 21 arranged indoors to detect the wall temperature and a temperature and humidity sensor 20 used to detect indoor air humidity and temperature. The controller 30 is connected with the temperature sensor 21 and the temperature and humidity sensor 20 for controlling and adjusting the opening degree of the electric cooling valve 1011 according to the wall temperature and the indoor humidity and temperature.

That is to say, the wall temperature and indoor humidity and temperature are detected in real time by the temperature sensor 21 and the temperature and humidity sensor 20, and then the opening degree of the electric surface cooling valve 1011 is controlled by the controller 30, and then the indoor air temperature is controlled by the surface cooler 101. Make adjustments.

According to the clean air-conditioning energy-saving control system based on indoor dew point temperature control provided by the utility model, the temperature sensor 21 detects the indoor wall temperature, the temperature and humidity sensor 20 detects the indoor temperature and humidity, and the controller 30 performs PID according to the wall temperature, indoor temperature and humidity Adjust the output control signal to the electric surface cooling valve 1011 to adjust its opening, and then control the dew point temperature in the room to be higher than the wall temperature, and finally achieve the purpose of preventing condensation and dripping due to the fresh air being directly drawn into the room and encountering low temperature against the wall. The utility model solves the problem that the air-conditioning unit 10 dare not shut down due to the problem of dew condensation and water dripping.

In one embodiment of the present utility model, it also includes an air inlet section, a new return air mixing section and an air supply section, and the air inlet section, the new return air mixing section, the surface cooling section and the air supply section follow the flow direction of the fresh air in sequence set up.

The air inlet section is provided with an air inlet 102, the air inlet 102 is provided with an electric fresh air valve 1021, the new return mixing section is provided with a return air outlet 103, and the return air outlet 103 is provided with an electric return air valve 1031, and the return air The tuyere 103 is communicated to the room through a return duct 107 . The blower section is provided with a blower 104 , and the blower 104 is provided with a frequency converter 1041 for frequency conversion regulation of the blower 104 . The controller 30 is in signal connection with the electric fresh air valve 1021 , the electric return air valve 1031 , and the frequency converter 1041 . That is to say, controlling the switch of the electric fresh air valve 1021 by the controller 30 can control the intake air, and controlling the switch of the electric return air valve 1031 can control the return air, and controlling and adjusting the frequency of the frequency converter 1041 can adjust the blowing rate of the air blower 104. Air volume etc. Preferably, the frequency lower limit of the frequency converter 1041 is 25HZ, and the upper limit is 50HZ.

More specifically, an exhaust fan 40 is also included, and the exhaust fan 40 is used to exhaust the air in the room to the outside.

For example, when the air conditioner unit 10 is shut down, the controller 30 controls the exhaust fan 40 to turn on, controls to close the electric fresh air valve 1021, fully opens the electric return air valve 1031, and adjusts the frequency of the blower 104 through the frequency converter 1041, so that the frequency drops to 25HZ which is the lower limit of the frequency run. At the same time, after the temperature sensor 21 and the temperature and humidity sensor 20 detect the indoor wall temperature, indoor temperature and humidity, the controller 30 outputs control signals to the electric surface cooling valve 1011 to adjust its opening according to the wall temperature, indoor temperature and humidity, so as to control cleanliness. The dew point temperature in the room is higher than the wall temperature. Thereby, the purpose of preventing condensation and dripping due to fresh air being directly pumped into the room and encountering low-temperature walls is achieved. The utility model solves the problem that the air-conditioning unit 10 dare not shut down due to the problem of dew condensation and water dripping.

In one embodiment of the present invention, it also includes a humidification section and a heating section; the air supply section, humidification section and heating section are sequentially arranged along the fresh air flow direction. The humidification section is provided with a humidifier 105, and the humidifier 105 is provided with a humidification control valve 1051 for controlling the switch of the humidifier 105. The heating section is provided with a heater 106 and an air outlet. The heater 106 is provided with an electric heating valve 1061 for controlling the switch of the heater 106. The air outlet is connected to the room. The controller 30 is in signal connection with the humidification control valve 1051 and the electric heating valve 1061 .

During the production period of the air-conditioning unit 10, the fresh air is sent out by the blower 104 and first passes through the humidification section, is humidified by the humidifier 105 in the humidification section, then passes through the heating section, is heated by the heater 106 in the heating section, and finally sent into the room. The controller 30 can control humidification and heating by opening and closing the humidification control valve 1051 and the electric heating valve 1061. For example, during the shutdown period, the controller 30 can control the humidification control valve 1051 and the electric heating valve 1061 Turn off, thereby stopping humidification and heating.

To sum up, the clean air-conditioning energy-saving control system based on the indoor dew point temperature control of the present utility model has no fresh air load during the shutdown stage and saves energy. Moreover, the return air of the system is fully utilized, the operation is economical, and the management is convenient. In addition, the system adopts dew point air supply, which solves the problem of dew condensation and dripping when fresh air directly enters the room and encounters low-temperature walls when the air-conditioning unit 10 is shut down. Compared with the existing system, the operation is safe and economical, and high efficiency and energy saving are realized.

The utility model has the following advantages: (1) Through the control of the indoor wall temperature and the dew point temperature, the problem of dew condensation and dripping is greatly alleviated, and the maintenance cost of the system is reduced. (3) The air-conditioning unit 10 can run intermittently and make full use of the return air, reducing the waste of resources. (4) The system is coordinated and controlled by PID, the operation is energy-saving and stable, and the management is convenient.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (5)

1. A clean air-conditioning energy-saving control system based on indoor dew point temperature control, characterized in that it comprises: An air-conditioning unit, the air-conditioning unit includes a surface cooling section, the surface cooling section is provided with a surface cooler, and the surface cooler is provided with an electric surface cooling valve; A detection device, which includes a temperature sensor installed indoors to detect wall temperature and a temperature and humidity sensor to detect indoor air humidity and temperature; A controller, the controller is signal-connected with the temperature sensor and the temperature and humidity sensor, and is used to control and adjust the opening degree of the electric counter cooling valve according to the wall temperature and the indoor humidity and temperature. 2. The clean air-conditioning energy-saving control system based on indoor dew point temperature control according to claim 1, further comprising an air inlet section, a new return air mixing section and an air supply section, the air inlet section, the new return air The mixing section, surface cooling section and air supply section are arranged in sequence along the fresh air flow direction; The air inlet section is provided with an air inlet, the air inlet is provided with an electric fresh air valve, the new return mixing section is provided with an air return port, the air return port is provided with an electric return air valve, and the return air port passes through a The air duct is connected to the room; The air supply section is provided with a blower, and the blower is provided with a frequency converter for frequency conversion regulation of the blower; The controller is signal-connected with the electric fresh air valve, electric return air valve, and frequency converter. 3. The clean air-conditioning energy-saving control system based on indoor dew point temperature control according to claim 2, further comprising a humidification section and a heating section; the air supply section, humidification section and heating section are sequentially arranged along the fresh air flow direction ; The humidification section is provided with a humidifier, and the humidifier is provided with a humidification control valve for controlling the switch of the humidifier; The heating section is provided with a heater and an air outlet, the heater is provided with an electric heating valve for controlling the switch of the heater, and the air outlet is connected to the room; The controller is signal-connected with the humidification control valve and the electric heating valve. 4. The clean air-conditioning energy-saving control system based on indoor dew point temperature control according to claim 3, further comprising an exhaust fan, which is used to discharge the indoor air to the outside. 5. The clean air-conditioning energy-saving control system based on indoor dew point temperature control according to claim 3, wherein the frequency lower limit of the frequency converter is 25HZ, and the upper limit is 50HZ.