Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature

A temperature control device, fan coil technology, applied in heating and ventilation control system, space heating and ventilation control input, control input involving air characteristics, etc., can solve the problem of low storage efficiency, time-consuming and labor-consuming, human error and other problems, to achieve the effect of high efficiency, ensuring energy saving effect, saving energy and saving time and precision

Inactive Publication Date: 2016-07-06
GUANGZHOU DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of manually adjusting the air volume and water volume of the fan coil unit in the prior art, low storage efficiency, time-consuming and labor-consuming, human error, and low precision, and to provide a method to control the opening of the water valve according to the return air temperature. Limit fan coil temperature control device

Method used

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  • Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature
  • Fan coil temperature control device capable of controlling opening limit range of water valve according to return air temperature

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specific Embodiment 1

[0023] refer to figure 1 and figure 2 , this embodiment includes a fan coil unit 1, an electric water valve 2, a controller 3 and a control panel 4, a fan is arranged in the fan coil unit 1; a return air temperature sensor 5 is arranged in the return air passage of the fan coil unit 1, The controller 3 has a signal processing unit and a feedback information processing unit as well as several analog signal input terminals, several analog signal output terminals, several digital signal input terminals and several digital signal output terminals; the return air temperature sensor 5 has a temperature measuring head and temperature signal output terminals, the control panel 4 has a display screen and operation buttons, and the operation buttons are used as manual signal input terminals to input the set value of the room temperature and the limit value of the opening of the electric water valve 2; the signal output terminal of the control panel 4 Connect to the signal input termin...

specific Embodiment 2

[0048] This embodiment is the same as the specific embodiment 1 except that the relationship between the return air temperature, the deviation absolute value of the set temperature and the water valve opening limit is different from that of the specific embodiment 1.

[0049] Table 2 shows the relationship between the return air temperature, the deviation absolute value of the set temperature and the water valve opening limit.

[0050] When the indoor temperature setting value is 23 degrees. The detection value of the return air temperature is 30 degrees. The model of the fan coil unit is FC600, the cooling capacity is 4850W and the heat capacity is 6850W under the national standard working condition with medium air volume.

[0051] According to Table 2, since the absolute value of the deviation between the return air temperature and the set temperature is 7°C, the water valve opening limit at this time is set to 80%.

[0052] Table II

[0053] The absolute value o...

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Abstract

The invention relates to a fan coil temperature control device capable of controlling the opening limit range of a water valve according to return air temperature. The fan coil temperature control device comprises a fan coil, an electric water valve, a controller and a control panel, and is characterized in that a return air temperature sensor is arranged in a return air passage of the fan coil; the controller is provided with a signal processing unit, a feedback information processing unit, a plurality of analog signal input ends, a plurality of analog signal output ends, a plurality of digital signal input ends and a plurality of digital signal output ends; the return air temperature sensor is provided with a temperature measuring head and a temperature signal output end; the control panel is provided with a display screen and operation buttons; the temperature signal output end of the return air temperature sensor is connected with the return air temperature feedback information input end of the controller; the controller outputs opening control signals of the electric water valve so as to control the opening of the electric water valve in a preset opening limit range; and the fan coil temperature control structure capable of controlling the opening limit range of the water valve according to the return air temperature is formed. The fan coil temperature control device has the beneficial effects that the efficiency is high; energy and time are saved; and the precision is high.

Description

technical field [0001] The invention relates to a temperature control device, in particular to a fan coil temperature control device for controlling the opening limit of a water valve according to the return air temperature. It belongs to the technical field of heating, ventilating and air conditioning. Background technique [0002] The fan coil unit is the terminal product of the central air conditioner. It is composed of heat exchangers, water pipes, filters, fans, water trays, exhaust valves and brackets. Its working principle is to continuously recirculate the air in the room where the unit is located. The air is cooled (heated) after passing through the cold water (hot water) coil to keep the room temperature constant. [0003] With the continuous development of fan coil technology, the field of application has also become larger, and now it is mainly used in offices, hospitals, scientific research institutions and other places. The fan coil unit mainly relies on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/70F24F11/83F24F2110/00F24F2110/10F24F11/84F24F11/63
Inventor 屈国伦何恒钊
Owner GUANGZHOU DESIGN INST
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