CN100357680C

CN100357680C - Defrost condenser of heat exchanger outdoor machine and its defrost control method

Info

Publication number: CN100357680C
Application number: CNB200610049684XA
Authority: CN
Inventors: 刘银龙
Original assignee: 刘银龙
Current assignee: Huangshan Longcheng Energy Technology Co., Ltd.
Priority date: 2006-03-02
Filing date: 2006-03-02
Publication date: 2007-12-26
Anticipated expiration: 2026-03-02
Also published as: CN1821689A

Abstract

The present invention relates to a defrosting condenser of a heat exchanger and a defrosting control method. A carbon fiber heating band is wound around the bare part of a copper pipe of the condenser and heat radiating fins and is connected with a control instrument of an outer electric source. The control instrument is respectively and electrically connected with the condenser, a water storing tank or each corresponding temperature sensor of an indoor machine of an air conditioning. The control instrument is electrically connected with a compressor. The defrosting control method comprises the following steps: step 1, when the temperature t1 of the condenser is less than or equal to 8 DEG C, the control instrument makes the heating band heat, and the control instrument makes the heating band stop heating when the temperature t1 is larger than or equal to 15 DEG C; step 2, when the temperature t1 is less than or equal to 8 DEG C, and the heating band continuously heats for 40 minutes, the control instrument delivers an instruction to make the compressor stop working for 3 minutes, and then the compressor is started continuously heat; thus, the heating band always heats to wok at the moment; step 3, when the temperature is larger than 8 DEG C and is less than 15 DEG C, the heating band always works; step 4, when the temperature of water in the water storing tank reaches 55 DEG C, the compressor and the heating band both stop working, and the compressor and the heating band are started to work when the temperature of the water decreases to 52 DEG C. The condenser is suitable for water heaters and heating air conditioners, obviously enhances heat efficiency, and reduces energy consumption.

Description

A kind of defrosting condenser and defrosting control method thereof of heat exchanger outdoor machine

Technical field

The invention belongs to the accessory device in the liquid heater that thermal source is arranged, and is specifically related to the defrosting improvement technology of condenser in the heat exchanger outdoor machine.

Background technology

Heat exchanger comprises Teat pump boiler and heating air conditioner, all is provided with off-premises station, and wherein condenser and compressor are its critical piece.Condenser mainly is made up of radiating fin and copper pipe, dress heat transfer medium in the copper pipe, the compressor work that links to each other with copper pipe is compressed into high pressure high temperature vapor with medium, make with the water heater that links to each other in water storage box in the air heat of evaporimeter or cooling/heating air conditioner air conditioner indoor machine heat up.It is the heating equipment that family and hotel, restaurant extensively adopt.But when outdoor temperature was low to winter, particularly frosting easily on the radiating fin of condenser reduced the thermal efficiency, increases energy consumption.Generally to be four-way change-over valve defrost with the heat of medium existing Defrost technology, have in the other dress of condenser heating rod energising heating, these two kinds of Defrost technologies, energy consumption is still bigger, at the bottom of the efficient. just can not defrost below spending subzero 5, can't normally heat.

Summary of the invention

The invention purpose is the shortcoming that will overcome prior art, and the defroster that design and installation can be controlled automatically on condenser can fully guarantee to heat the needs of heating, can cut down the consumption of energy energy savings again.Can both defrost at subzero 15 degree, normally heat.

Take technical scheme for achieving the above object: a kind of heat exchanger comprises the condenser of water heater and heating air conditioner off-premises station, its design feature is to twine heating tape in the exposed part of condenser copper tube and radiating fin upper part, this heating tape is electrically connected with controller, the controller external power supply; On controller and the condenser, all temperature sensors of installing of in the water heater water storage box or cooling/heating air conditioner air conditioner indoor machine hot-air mouth place are electrically connected; Controller also is electrically connected with compressor; The copper pipe of the interior dress heat transfer medium on the condenser connects the heating element of compressor and interior hot vaporizer of water heater water storage box or cooling/heating air conditioner air conditioner indoor machine.

The Defrost method of the condenser of this heat exchanger is controlled automatically by the temperature parameter requirement, can follow these steps to carry out:

1, temperature t on condenser ₁In the time of≤8 ℃, controller just starts the heating tape on (energising) condenser, and to condenser heat temperature raising defrosting, when condenser temperature 〉=15 ℃, controller cuts off the power supply to heating tape, stops heating;

2, as condenser temperature t ₁In the time of≤8 ℃, and the heating tape continuous operation is after 40 minutes, and controller sends instructions and made compressor shutdown 3 minutes, then continues to start compressor and heats, and this moment, heating tape was cheated whole heating work;

3, when condenser temperature＞8 ℃ and＜15 ℃, heating tape is worked always;

4, as water heater water storage box water temperature (t ₂) reach 55 ℃ or cooling/heating air conditioner indoor air temperature (t ₂) when reaching 18 ℃, controller all quits work compressor and heating tape, when this temperature dropped to 52 ℃ (15 ℃), then the two started work again.

The outstanding advantage and the remarkable result of the invention:

1, this condenser defroster is simple in structure, can start automatically as required or turn-offs heating tape or compressor operating, and easy to use, energy-saving effect is obvious;

2, the heat of heating tape by the compressed machine acting of the heat transfer of medium in the copper pipe, plays the secondary heat utilization, significantly improves the thermal efficiency, energy savings.

Description of drawings

Accompanying drawing is the structure annexation schematic diagram of the invention.

The specific embodiment

Specify the embodiment of the invention with reference to accompanying drawing:

Twining high-temperature silica gel carbon fiber heating band 5 on the exposed copper pipe in condenser two ends in a kind of water heater off-premises station 1 and the radiating fin 3 is connected with controller 11 through electric wire 10; The temperature sensor of adorning on the condenser 8 is connected with controller 11, experiences condenser temperature t ₁Reach controller; In the copper pipe of dress medium connect compressor 2 and be connected with hot vaporizer 7 in the water storage box 4; Temperature sensor is experienced the temperature t of hot water in the water storage box ₂Be connected with controller through electric wire 6; Controller 11 links to each other with supply socket 12, and electric wire 9 connects compressor 2 and controller 11.Controller adopts the complete intelligent Automatic Detection and Control of single-chip microcomputer.

If be used for heating air conditioner structure annexation and above-mentioned water heater roughly the same; The water storage box that just indoor set of cooling/heating air conditioner is replaced water heater.

Claims

1, a kind of defrosting condenser that is used for heat exchanger outdoor machine comprises the copper pipe of radiating fin and interior dress heat transfer medium, it is characterized in that the exposed part of copper pipe and radiating fin (3) twine heating tape (5); Heating tape is electrically connected with the controller of external power supply; Controller is electrically connected the temperature sensor of each corresponding position installation of indoor set of condenser, water heater water storage box or heating air conditioner; Controller is electrically connected compressor (2); Condenser copper tube connects compressor (2) and the hot vaporizer of water heater water storage box or the heating element of cooling/heating air conditioner air conditioner indoor machine.

2, by the described defrosting condenser of claim 1, it is characterized in that heating tape (5) adopts high-temperature silica gel carbon fiber heating lead, controller adopts single-chip microcomputer.

3, the method for control defrosting that is used for the condenser of claim 1, wherein condenser connects the hot vaporizer of compressor and water heater water storage box, it is characterized in that making the condenser defrosting by automatic control electric heating heating tape (5), the temperature of experiencing according to temperature sensor, the work of control heating tape (5) and compressor (2), specifically control by the requirement of following temperature parameter:

(1) as condenser temperature t ₁In the time of≤8 ℃, controller (11) starts heating tape (5) the energising heating defrosting on the condenser, works as t ₁In the time of 〉=15 ℃, controller (11) makes heating tape (5) outage, stops heating;

(2) work as temperature t ₁In the time of≤8 ℃, and heating tape (5) generates heat 40 minutes the time continuously, and controller (11) can send instructions compressor (2) was shut down 3 minutes, then continues to start compressor (2) and heats, and heating tape this moment (5) is cheated whole heating work;

(3) work as temperature t ₁In the time of＞8 ℃ and t ₁In the time of＜15 ℃, heating tape (5) can be worked always;

(4) as water storage box water temperature t ₂When reaching 55 ℃, controller all quits work compressor (2) and heating tape (5), and when water temperature dropped to 52 ℃, then the two started work again.