Heat pump water heater variable frequency compressor initial frequency control method and control device

A technology of variable frequency compressor and heat pump water heater, which is applied to fluid heaters, lighting and heating equipment, etc., can solve the problem that the unit is stable for a long time, slowly increasing the frequency, and is not conducive to low-temperature water production of domestic direct heating air source heat pump water heaters, etc. problem, to achieve the effect of increasing water production

Active Publication Date: 2017-11-28
GREE ELECTRIC APPLIANCES INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For DC variable frequency compressors, the current common practice is to slowly increase the frequency when starting up. Compared with fixed frequency compressors, the unit’s stable time is longer, which is not conducive to the low temperature production of household direct heating air source heat pump water heaters. amount of water

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat pump water heater variable frequency compressor initial frequency control method and control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] Such as figure 1 As shown, according to the method for controlling the initial frequency of the variable frequency compressor of the heat pump water heater of the present invention, the method includes: Step S1: Obtain the water temperature Tw of the water tank, the set temperature Ts of the water tank, and the outdoor ambient temperature Te; Step S2: Determine the variable frequency according to the outdoor ambient temperature Te The upper limit frequency Fu of compressor operation; Step S3: Determine the proportional coefficient K of the initial frequency F0 of the variable frequency compressor and the upper limit frequency Fu according to the difference Ts-Tw between the set temperature Ts of the water tank and the water temperature Tw of the water tank and the outdoor ambient temperature Te, and Calculate the initial frequency F0 according to F0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method and a control device for controlling the initial frequency of a frequency conversion compressor of a heat pump water heater. According to the method for controlling the initial frequency of the variable frequency compressor of the heat pump water heater of the present invention, the method includes: step S1: obtaining the water temperature Tw of the water tank, the set temperature Ts of the water tank, and the outdoor ambient temperature Te; step S2: determining the operation of the variable frequency compressor according to the outdoor ambient temperature Te upper limit frequency Fu; step S3: determine the initial frequency F0 of the inverter compressor and the proportional coefficient K of the upper limit frequency Fu according to the difference Ts-Tw of the set temperature Ts of the water tank and the water temperature Tw of the water tank and the outdoor ambient temperature Te, and according to F0= K Fu determines the initial frequency F0. The invention makes the initial frequency close to the stable operating frequency, so that the frequency conversion compressor of the heat pump water heater can quickly reach a stable state, timely and stably replenish hot water, and increase the water production of the unit.

Description

technical field [0001] The invention relates to the field of heat pump water heater control, in particular to a method for controlling the initial frequency of a variable frequency compressor of a heat pump water heater. Background technique [0002] Household direct heating air source water heater adopts the system type of "large heating capacity outdoor unit + small capacity water tank". Hot water is provided during the initial unstable stage of the outdoor unit to act as a buffer. The main source of hot water is still the heating of the outdoor unit. [0003] Due to the characteristics of the heat pump unit, it takes a certain amount of time from start-up to stable operation, and the speed of the stabilization time has a great impact on the water production of the unit: the shorter the time from start-up to stabilization of the unit, the more timely the supplementary heat will be, and the heat consumed by the buffer water tank will be more timely. The less water, the gre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
Inventor 曹浩史帆寇颖举李绍斌袁明征刘合心
Owner GREE ELECTRIC APPLIANCES INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products