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Transducer controller of central air conditioner and method thereof

A frequency converter control, central air conditioning technology, applied in heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve the problem of high cost of central air conditioning system renovation, and achieve the effect of saving investment costs

Inactive Publication Date: 2009-10-07
TIANJIN BODA YUANTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the cost of rebuilding the entire central air-conditioning system will be very high. In order to save costs, the market urgently needs low-cost central air-conditioning inverter control devices.

Method used

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  • Transducer controller of central air conditioner and method thereof
  • Transducer controller of central air conditioner and method thereof
  • Transducer controller of central air conditioner and method thereof

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Experimental program
Comparison scheme
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Embodiment Construction

[0027] In the following, the central air-conditioning frequency converter control device and method of the present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments.

[0028] figure 2 It is a block diagram of the central air-conditioning frequency converter control device of the present invention, as figure 2 As shown, the central air-conditioning inverter control device includes a central air-conditioning water inlet temperature sensor 11 and a water outlet temperature sensor 12, a circulating water pump unit control frequency converter 22, and a central air-conditioning water pump unit 44. The circulating water pump unit controls the frequency converter 22. The output terminal controls the running speed of the central air-conditioning water pump unit 44 , and the input comparison circuit 13 is connected between the central air-conditioning water inlet temperature sensor 11 and water outlet temperature senso...

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Abstract

The present invention discloses a transducer controller of central air conditioner which comprises the following components: a water inlet temperature sensor of central air conditioner, a water outlet temperature sensor, a circulating water pump assembly control transducer and a water pump unit of central air conditioner. The output end of circulating water pump assembly control transducer controls the operating speed of water pump unit of central air conditioner. A comparison circuit is connected among the water inlet temperature sensor of central air conditioner, the water outlet temperature sensor and the control transducer of circulating water pump unit. The invention has a beneficial effect that a temperature reference signal controlled by the control transducer of circulating water pump unit is adjusted through detecting the temperature difference between the water inlet and the water outlet according to the transducer controller of central air conditioner and method of the invention. The invention uses a simple comparing control mode for obtaining the analogue signal of temperature difference of temperature sensor of water inlet temperature sensor and water outlet temperature sensor of central air conditioner. A large amount of investment cost can be saved in the central transformation project of central air conditioner.

Description

technical field [0001] The invention relates to a frequency converter control device and method, in particular to a central air-conditioning frequency converter control device and method. Background technique [0002] In the general frequency conversion transformation of central air conditioners, temperature sensors are usually used to collect the water outlet temperature and water inlet temperature of the refrigeration main engine circulation system, and then the difference between the two is calculated by PLC, and then the standard difference between the frequency converter and the entire system is obtained. Make a comparison, and compare the results to determine the speed of the central air conditioning circulating water pump. figure 1 It is the control device of the central air-conditioning frequency converter in the prior art; figure 1 As shown, the central air-conditioning water inlet temperature sensor 11 and the water outlet temperature sensor 12 are respectively co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02
Inventor 郑镇朋
Owner TIANJIN BODA YUANTONG TECH