Control method of variable-frequency heat pump water heater

A technology of a heat pump water heater and a control method, which is applied to fluid heaters, lighting and heating equipment, etc., and can solve problems such as insufficient energy saving of heat pump water heaters

Inactive Publication Date: 2017-10-20
GUANGDONG ORIENTAL SUNRISE AIR ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with fixed-frequency heat pump water heaters, variable-frequency heat pump water heaters are more environmentally friendly and energy-saving, making them bound to become mainstream products in the market; but the heat pump water heaters currently in use are not energy-efficient enough

Method used

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  • Control method of variable-frequency heat pump water heater
  • Control method of variable-frequency heat pump water heater

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Embodiment Construction

[0016] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0017] like figure 1 and figure 2 As shown, it is a control method of a frequency conversion heat pump water heater. The control system of the frequency conversion heat pump water heater includes a heat pump water heater 1, a water storage tank 2, a temperature sensor 3 of the water storage tank, a controller 4 and an ambient temperature sensor 5; Set the ambient temperature T1 in the heater 4, set the temperature T2 of the water storage tank, set the set operating fr...

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Abstract

The invention relates to a control method of a variable-frequency heat pump water heater. The control method is characterized in that the set environment temperature T1, the set water storage tank temperature T2, the set operation frequency f, the set energy efficiency ratio reference value COPref and the set power reference value Pref are set in a controller; when the heat pump water heater is started, the controller determines the operation frequency f1 of a current heat pump water heater compressor according to the set environment temperature T1, the set water storage tank temperature T2 and the set operation frequency f; the real-time water storage tank temperature Tw1 is recorded, the controller starts timing, and the average power consumption P begins to be calculated; after the heat pump water heater operates for the time t, the controller records the current water storage tank temperature Tw2, and the water tank temperature difference delta T=Tw2-Tw1; the controller calculates the real-time heating capacity of the heat pump water heater, wherein the real-time heating capacity Q=CMdeltaT; the power consumption of the heat pump water heater during the time t is calculated, wherein the power consumption W=Pt, and the real-time energy efficiency ratio COP=Q / W; and the real-time energy efficiency ratio COP is compared with the set energy efficiency ratio reference value COPref to adjust the operation frequency of the compressor. The control method has the advantages that the heat pump water heater can operate in the most energy-saving manner all the time.

Description

technical field [0001] The invention relates to a control method of a frequency conversion heat pump water heater. Background technique [0002] Heat pump water heaters have broad development space in the home appliance market. With the change of people's consumption concept and the enhancement of environmental awareness, heat pump water heaters will quickly seize the market. Compared with fixed-frequency heat pump water heaters, variable-frequency heat pump water heaters are more environmentally friendly and energy-saving, making them bound to become mainstream products in the market; but the heat pump water heaters currently in use are not energy-efficient enough. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a control method for a frequency conversion heat pump water heater, which can calculate the energy efficiency ratio of the heat pump water heater in real time, compare it with th...

Claims

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Application Information

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IPC IPC(8): F24H9/20
CPCF24H9/2007
Inventor 关海生林巧龙何柳全
Owner GUANGDONG ORIENTAL SUNRISE AIR ENERGY
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