CN201145456Y

CN201145456Y - Refrigerator defrost heater

Info

Publication number: CN201145456Y
Application number: CNU2007201316878U
Authority: CN
Inventors: 陶同盛; 金文俊; 刘宜宁
Original assignee: Midea Group Refrigerator Manufacturing Hefei Co Ltd
Current assignee: Midea Group Refrigerator Manufacturing Hefei Co Ltd
Priority date: 2007-12-25
Filing date: 2007-12-25
Publication date: 2008-11-05
Anticipated expiration: 2017-12-25

Abstract

The utility model discloses a defrosting heater for a refrigerator, and is characterized in that: a primary heater and an auxiliary heater which are independently controllable are arranged in group, the primary heater is a defrosting heater for an evaporator, and the auxiliary heater is a defrosting heater for a defrosting tray and a water drain pipe. The defrosting heater has the following control mode that: when the defrosting begins, the primary heater and the auxiliary heater are synchronously started to carry out defrosting; when the defrosting of the evaporator is finished, the primary heater stops working, and the auxiliary heater continues working; when the defrosting of the defrosting tray and the water drain pipe is finished, the auxiliary heater stops working, and the defrosting process is finished. The defrosting heater is particularly suitable for being applied to an air-cooled refrigerator, and can effectively achieve the aims of ice blockage of the water drain pipe and energy consumption reduction.

Description

The refrigerator Defrost heater

Technical field

The utility model relates to the refrigerator Defrost heater.

Background technology

One deck frost can be tied in refrigerator operation a period of time finisher surface, and the existence of this frost layer can influence the cold exchange of evaporimeter, seriously reduces the refrigerating efficiency of refrigerator, so require refrigerator must possess periodic defrost function.

General defroster comprises: parts such as evaporimeter, Defrost heater, defrost controller, high-temperature protector, drip tray, drainpipe are formed.When the refrigerator continuous operation behind certain hour, defrost controller is connected power supply, Defrost heater is started working, controller cuts off the Defrost heater power supply when evaporator surface frost dissolves after, defrost water is discharged from drip tray and drainpipe, the defrost process end.

Owing in defrost process, there being the part trash ice to be deposited in around drip tray and the drainpipe, complete defrost, solve the stifled problem of drainpipe ice, can only pass through to prolong the heat time heating time of whole defrosting heater, but the obvious like this increase that brings energy consumption.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology problem, a kind of refrigerator Defrost heater that especially is applied in the wind cooling refrigerator is provided, solving the purpose that drainpipe ice is stifled and cut down the consumption of energy to reach.

The technical scheme that the utility model technical solution problem is adopted is:

The design feature of the utility model refrigerator Defrost heater is that grouping is provided with independent controlled primary heater and auxilliary heater, and primary heater is the evaporator defrost heater, and auxilliary heater is the Defrost heater of drip tray and drainpipe.

The design feature of the utility model refrigerator Defrost heater is that also primary heater adopts embedded mode to be fixed on the fin of evaporimeter, and auxilliary heater adopts laminating type to be fixed on the surface of drip tray and discharge outlet.

Primary heater and auxilliary heater started the input defrosting synchronously when the control mode of the utility model refrigerator Defrost heater was the defrosting beginning; Primary heater quit work when the evaporimeter defrost was finished, and auxilliary heater continues maintenance work; When the equal defrost of drip tray and drainpipe was finished, auxilliary heater quit work, and defrost process finishes.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, primary heater promptly stops heating in the utility model after finishing the defrosting of evaporimeter top layer, and that continues is heated on drip tray and drainpipe position by auxilliary heater, makes the trash ice fusing and keeps the unimpeded of drainpipe 7, directly causes draining and finishes.This version can shorten the working time of primary heater effectively, because the power of auxilliary heater is much smaller than the power of primary heater, so power savings is remarkable.

2, the utility model can thoroughly solve the stifled phenomenon of drainpipe ice that wind cooling refrigerator occurs easily by the heat time heating time of the auxilliary heater of proper extension.

3, the utility model heater adopts main and auxiliary two heater design, and its surface area is big, and specific load is low, and hot face temperature can effectively guarantee the functional reliability and the security of refrigeration system well below R600a cold-producing medium burning-point.

Description of drawings

Fig. 1 is the utility model master TV structure schematic diagram.

Fig. 2 is the utility model side-looking structural representation.

Number in the figure: 1 primary heater, 2 auxilliary heaters, 3 evaporimeters, 4 temperature sensors, 5 high temperature protection fuses, 6 drip trays, 7 drainpipes.

The specific embodiment

With reference to figure 1, Fig. 2, the present embodiment grouping is provided with independent controlled primary heater 1 and auxilliary heater 2, and primary heater 1 is the evaporator defrost heater, and auxilliary heater 2 is the Defrost heater of drip tray 6 and drainpipe 7.

Primary heater 1 adopts embedded mode to be fixed on the fin of evaporimeter 3, and auxilliary heater 2 adopts laminating type to be fixed on the surface of drip tray 6 and discharge outlet 7.

The control mode of Defrost heater:

When the refrigerator of being controlled operation by computer entered defrost process, during the defrosting beginning, primary heater 1 all started the input defrosting with auxilliary heater 2;

Rise when reaching setting value by the surface temperature of temperature sensor 4 detected evaporimeters 3, being evaporimeter 3 defrosts finishes, primary heater 1 quits work, continue maintenance work by auxilliary heater 2, the trash ice that will be deposited in the drip tray 6 by auxilliary heater 2 carries out heat fused, and keeps the unimpeded of drainpipe 7;

When defrost water drains in drip tray 6 and the drainpipe 7, be defrost and finish, auxilliary heater 2 also quits work thereupon, and whole defrost process finishes, and refrigerator drops into refrigerating state again.

In concrete the enforcement, primary heater 1 adopts the embedded aluminum pipe heater of fiber tube, and primary heater 1 surface area of this form is big, and specific load is low, hot face temperature can effectively guarantee the functional reliability and the security of refrigeration system well below R600a cold-producing medium burning-point.

Correspondingly, the control of high temperature power-off protection can be set in control circuit, high temperature protection fuse 5 grades be set at the two ends of primary heater 1 implement the maltilevel security protection.

Claims

1, refrigerator Defrost heater, it is characterized in that dividing into groups to be provided with independent controlled primary heater (1) and auxilliary heater (2), described primary heater (1) is the evaporator defrost heater, and described auxilliary heater (2) is the Defrost heater of drip tray (6) and drainpipe (7).

2, refrigerator Defrost heater according to claim 1, it is characterized in that described primary heater (1) adopts embedded mode to be fixed on the fin of evaporimeter (3), described auxilliary heater (2) adopts laminating type to be fixed on the surface of drip tray (6) and discharge outlet (7).