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Control circuit and control system of a heat pump water heater

A heat pump water heater and control circuit technology, applied in fluid heaters, lighting and heating equipment, etc., can solve problems such as MCU control chip electromagnetic interference, and achieve the effect of avoiding electromagnetic interference

Active Publication Date: 2017-08-04
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a control circuit and control system of a heat pump water heater to overcome the problem that the MCU control chip in the control system of the electric pump water heater in the prior art is prone to electromagnetic interference

Method used

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  • Control circuit and control system of a heat pump water heater
  • Control circuit and control system of a heat pump water heater
  • Control circuit and control system of a heat pump water heater

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Please refer to the attached figure 1 , is a functional block diagram of a control circuit of a heat pump water heater provided by the present invention, including: a water pump control circuit 101 , a compressor control circuit 102 , a detection circuit 103 and an alarm circuit 104 . Wherein, the water pump control circuit includes a first start button, and the compressor control circuit includes a second start button.

[0037] Specifically, the water...

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Abstract

The present invention provides a control circuit for a heat pump water heater, including: a water pump control circuit, a compressor control circuit, a detection circuit and an alarm circuit, and controls the water pump to start when it is judged that the first start button conforms to the first preset state . When it is judged that the second start button conforms to the second preset state, the compressor is controlled to start. When it is detected that the water pump or the compressor fails, an alarm is given. It can be seen that the control circuit of the heat pump water heater provided by the present invention does not use an MCU control chip, and at the same time realizes the control and protection functions of the water pump water heater, avoiding the MCU control in the control system of the electric pump water heater in the prior art. The problem of electromagnetic interference generated by the chip.

Description

technical field [0001] The invention relates to the technical field of electromechanical control, and more specifically, relates to a control circuit and a control system of a heat pump water heater. Background technique [0002] At present, the control system of the electric pump water heater is usually implemented through a control board with an MCU control chip. And combined with the temperature sensor, pressure sensor, relay and other devices outside the control board to realize the detection, control and protection of the electric pump water heater. [0003] However, the inventor found that the frequency of the switching power supply or other power conversion circuits on the control board is usually high, which is prone to electromagnetic interference, especially in military industrial sites with relatively high requirements for electromagnetic compatibility. In addition, the MCU control chip is easily affected by the external environment, such as: electromagnetic inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20F24H4/02
Inventor 褚川川邹金龙
Owner GREE ELECTRIC APPLIANCES INC