CN103123200A

CN103123200A - Defrosting anti-blocking refrigerator

Info

Publication number: CN103123200A
Application number: CN 201110368181
Authority: CN
Inventors: 李小明; 张振华; 张永刚; 黄昊; 纪红
Original assignee: HUANGSHI DONPER REFRIGERATION CO Ltd
Current assignee: HUANGSHI DONPER REFRIGERATION CO Ltd
Priority date: 2011-11-19
Filing date: 2011-11-19
Publication date: 2013-05-29

Abstract

The invention provides a defrosting anti-blocking refrigerator which is provided with a refrigerator body and an upper cover. A heat preservation interlayer is installed inside the refrigerator body to enable the refrigerator body to be divided into an upper part and a lower part, a liner is arranged on the upper portion of the refrigerator body, an interval is arranged between the liner and the heat preservation interlayer to form a cold air duct, a fan, a main evaporator A and a main evaporator B are installed inside the cold air duct, wherein the main evaporator A and the main evaporator B are mutually communicated, a drain pipe is arranged on a baseplate of the heat preservation interlayer, a compressor, a condenser, a throttling device and a magnetic valve A are installed on the lower portion of the refrigerator body, and a controller is adopted to control connection of the compressor, the magnetic valve A and the fan. The defrosting anti-blocking refrigerator is characterized in that auxiliary evaporators are installed on two sides of the drain pipe inside the heat preservation interlayer, inlets of the auxiliary evaporators are in series connection with the magnetic valve A through a magnetic valve B, outlets of the auxiliary evaporators are connected with an air return pipeline, the magnetic valve B is controlled to be connected with the controller. The defrosting anti-blocking refrigerator resolves the problems that the drain pipe of an existing refrigerator is easy to freeze and block, refrigeration effect is affected. The defrosting anti-blocking refrigerator is mainly used for food cold storage and preservation and the like in catering and commercial retail industry.

Description

A kind of Anti-blocking defrosting freezer

(i) technical field: the present invention relates to the household electrical appliances refrigerating equipment, especially a kind of Anti-blocking defrosting freezer.

(ii) background technology: in existing air-cooled refrigerator, usually be provided with automatic defrosting system, every several hours system automatic defrostings once, defrosting time is generally a few minutes, rear press time delay a few minutes (being generally 3 minutes drips the time) that defrosted starts, the refrigeration system normal operation.Back and forth work long hours, make food in case remain in certain temperature range.In defrost process, because the inwall of casing is colder, the water droplet of defrosting is difficult for flowing at inwall, when a few minutes, system was recovered refrigeration, on inwall, water just build-ups ice, after operation a period of time (being generally 2 days), make the inwall drainpipe seal, ice sheet is more long-pending thicker, stops up air channel, causes refrigeration worse and worse.

(iii) summary of the invention: purpose of the present invention is exactly the drainpipe that will the solve existing refrigerator shutoff of easily freezing, and affects the problem of refrigeration, and a kind of Anti-blocking defrosting freezer is provided.

Concrete scheme of the present invention is improved for common refrigerator, it has cabinet and upper cover, insulating interlayer is installed in cabinet cabinet is divided into to upper and lower two parts, inner bag is equipped with on top at cabinet, between inner bag and insulating interlayer, there is spacing to form cold air duct, the main evaporator A and the main evaporator B that blower fan are installed in cold air duct and are interconnected, wherein main evaporator A is installed on bottom, main evaporator B is installed on sidepiece, on the base plate of insulating interlayer, is provided with drainpipe; Compressor is equipped with in bottom at cabinet, the circulation import of compressor connects the outlet of main evaporator B by return line, the loop exit of compressor connects the import of main evaporator A by refrigeration pipe, be serially connected with condenser and throttling arrangement in refrigeration pipe, with refrigeration pipe and be connected to defroster duct, magnetic valve A is housed in defroster duct, is furnished with controller control connection compressor, magnetic valve A, blower fan respectively; It is characterized in that: be positioned at the drainpipe both sides in insulating interlayer secondary evaporimeter is installed, the import of secondary evaporimeter is connected with magnetic valve A by magnetic valve B, and the outlet of secondary evaporimeter connects return line; The controlled connection controller of magnetic valve B.

The present invention is owing at the drainpipe periphery, having set up secondary evaporimeter, when main evaporator A, B defrost, the work that simultaneously defrosts of secondary evaporimeter, make the water droplet of main evaporator A, B defrosting along the smooth and easy inflow drainage pipeline of insulating interlayer inwall, the shutoff drainpipe that can not freeze, guaranteed the unimpeded of cold air duct, makes refrigerator in the situation that guarantee temperature, for a long time operation, thus the operating efficiency of former machine improved.

It is simple in structure, practical that the present invention improves, and can effectively prevent icing obstruction of drainpipe of refrigerator, reliable operation, and efficiency improves.

(iv) accompanying drawing explanation: Fig. 1 is structural representation of the present invention.

In figure: 1-compressor, 2-condenser, 3-throttling arrangement, 4-magnetic valve A, 5-magnetic valve B, 6-drainpipe, 7-secondary evaporimeter, 8-main evaporator A, 9-main evaporator B, 10-insulating interlayer, 11-return line, 12-refrigeration thing, 13-inner bag, 14-cold air duct, 15-blower fan, 16-controller, 17-upper cover, 18-cabinet, 19-refrigeration pipe, 20-defroster duct.

(v) the specific embodiment:

Referring to Fig. 1, the present invention has cabinet 18 and upper cover 17, insulating interlayer 10 is installed in cabinet 18 cabinet 18 is divided into to upper and lower two parts, on the top of cabinet 18, inner bag 13 is housed, between inner bag 13 and insulating interlayer 10, spacing is arranged, form cold air duct 14, the main evaporator A8 that blower fan 15 is installed in cold air duct 14 and is interconnected and main evaporator B9, wherein main evaporator A8 is installed on bottom, and main evaporator B9 is installed on sidepiece, is provided with drainpipe 6 on the base plate of insulating interlayer 10; In the bottom of cabinet 18, compressor 1 is housed, the circulation import of compressor 1 connects the outlet of main evaporator B9 by return line 11, the loop exit of compressor 1 connects the import of main evaporator A8 by refrigeration pipe 19, be serially connected with condenser 2 and throttling arrangement 3 in refrigeration pipe 19, with refrigeration pipe 19 and be serially connected with defroster duct 20, magnetic valve A4 is housed in defroster duct 20, is furnished with controller control connection compressor 1, magnetic valve A4, blower fan 15 respectively.Particularly: be positioned at drainpipe 6 both sides in insulating interlayer 10 secondary evaporimeter 7 is installed, the import of secondary evaporimeter 7 is connected with magnetic valve A4 by magnetic valve B5, and the outlet of secondary evaporimeter 7 connects return line 11; The controlled connection controller 16 of magnetic valve B5.Form the present invention.

Operation principle of the present invention (referring to Fig. 1): during refrigeration, controller 16 is opened, make compressor 1 obtain electric, the gas of the HTHP of discharging is by after condenser 2 condensations, enter the directive expansion valve of throttling arrangement 3() step-down, low-temperature low-pressure refrigerant arrives main steaming device A8 and main steaming device B9 and is evaporated, the heat around absorbing and lowering the temperature, then get back to compressor 1 acting, reciprocation cycle work.Simultaneously, blower fan 15 absorbs the cold around main evaporator A8, enters the surface of refrigeration thing 12 through cold air duct 14, then through the passage between main evaporator B9 fin, gets back to main evaporator A8, and circulation is air-cooled and so forth, makes the temperature of refrigeration thing 12 reduce.Due to magnetic valve A4 and magnetic valve B5 not electric, make secondary evaporimeter 7 can not form path, guarantee main evaporator A8 and main evaporator B9 refrigeration.

During defrosting, controller 16 conversions, make normally closed solenoid valve A4 and normally closed solenoid valve B5 simultaneously electric, the gas of the HTHP that compressor 1 is discharged directly passes through respectively main evaporator A8 and secondary evaporimeter 7 simultaneously, the gas flow of HTHP makes frost on evaporator fin be dissolved into rapidly water droplet after entering main evaporator A8 and main evaporator B9, meanwhile, the gas of HTHP also passes through the soldering of secondary evaporimeter 7(copper pipe below cabinet wall), make the frosting inwall heat up and dissolve rapidly, because insulating interlayer 10 inwalls are slope, so, the water of frosting flow into drainpipe 6 along slope, discharge casing.During defrosting, also can flow throttling device 3 sides through the high temperature and high pressure gas of magnetic valve A4, because throttling arrangement 3 has directionality, reverse can not circulate and flow too little, can not form path, guarantee that high temperature and high pressure gas flows into evaporimeter A8 and evaporimeter B9 and defrosts.

Claims

1. an Anti-blocking defrosting freezer, there is cabinet and upper cover, insulating interlayer is installed in cabinet cabinet is divided into to upper and lower two parts, inner bag is equipped with on top at cabinet, between inner bag and insulating interlayer, there is spacing to form cold air duct, the main evaporator A and the main evaporator B that blower fan are installed in cold air duct and are interconnected, wherein main evaporator A is installed on bottom, main evaporator B is installed on sidepiece, on the base plate of insulating interlayer, is provided with drainpipe; Compressor is equipped with in bottom at cabinet, the circulation import of compressor connects the outlet of main evaporator B by return line, the loop exit of compressor connects the import of main evaporator A by refrigeration pipe, be serially connected with condenser and throttling arrangement in refrigeration pipe, with refrigeration pipe and be connected to defroster duct, magnetic valve A is housed in defroster duct, is furnished with controller control connection compressor, magnetic valve A, blower fan respectively; It is characterized in that: be positioned at the drainpipe both sides in insulating interlayer secondary evaporimeter is installed, the import of secondary evaporimeter is connected with magnetic valve A by magnetic valve B, and the outlet of secondary evaporimeter connects return line; The controlled connection controller of magnetic valve B.