CN202254579U

CN202254579U - Anti-blocking defrosting freezer

Info

Publication number: CN202254579U
Application number: CN2011203431684U
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: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-05-30
Anticipated expiration: 2021-09-14

Abstract

The utility model relates to an anti-blocking defrosting freezer, which is provided with a cabinet body and an upper cover. An insulation partition layer installed in the cabinet body divides the cabinet body into an upper part and a lower part. An inner container is arranged on the upper part of the cabinet body, and a space reserved between the inner container and the insulation partition layer forms a cold air duct. A fan, a main evaporator A and a main evaporator B are installed in the cold air duct, the main evaporator A and the main evaporator B are mutually communicated, and a drainage pipe is arranged on a base plate of the insulation partition layer. A compressor, a condenser, a throttling device and a solenoid valve A are arranged on the lower part of the cabinet body, and a controller respectively controls and is connected with the compressor, the solenoid valve A and the fan. The anti-blocking defrosting freezer is characterized in that auxiliary evaporators are installed on two sides of the drainage pipe in the insulation partition layer, inlets of the auxiliary evaporators are in series connection with the solenoid valve A through a solenoid valve B, outlets of the auxiliary evaporators are connected with an air return pipeline, and the solenoid valve B is controlled by and connected with the controller. The anti-blocking defrosting freezer solves the problem that the drainage pipe of the existing freezer is easily frozen and blocked, and freezing effects are influenced, and is mainly suitable for food refrigerated storage, food fresh keeping and the like in catering and commercial retail industries.

Description

A kind of defrosting block-resistant type refrigerator

The (1) technical field: the utility model relates to the household electrical appliances refrigerating equipment, especially a kind of defrosting block-resistant type refrigerator.

(2) background technology: in existing air-cooled refrigerator; Usually be provided with automatic defrosting system, whenever at a distance from several hours system's automatic defrostings once, defrosting time generally is a few minutes; Back press time-delay a few minutes (be generally and dripped the time in 3 minutes) that defrosted starts the refrigeration system operate as normal.Back and forth work long hours, make the interior food of case remain in the 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, refrigeration was recovered by system, water just build-up ice on the inwall, after operation a period of time (being generally 2 days); Make the inwall drainpipe seal; Ice sheet is long-pending more thick more, stops up the air channel, causes refrigeration worse and worse.

The (3) summary of the invention: the purpose of the utility model is exactly the icing easily shutoff of drainpipe that will solve existing refrigerator, influences the problem of refrigeration, and a kind of defrosting block-resistant type refrigerator is provided.

The concrete scheme of the utility model is to improve to common refrigerator, and it has cabinet and loam cake, insulating interlayer is installed in cabinet cabinet is divided into two parts up and down; Inner bag is equipped with on top at cabinet; There is spacing to constitute cold air duct between inner bag and the insulating interlayer, 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 the bottom; Main evaporator B is installed on sidepiece, and 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 through return line; The loop exit of compressor connects the import of main evaporator A through refrigeration pipe, in refrigeration pipe, is serially connected with condenser and throttling arrangement, with refrigeration pipe and be connected to defroster duct; Magnetic valve A is housed in the defroster duct, is furnished with controller control connection compressor, magnetic valve A, blower fan respectively; It is characterized in that: in insulating interlayer, be positioned at the drainpipe both sides secondary evaporimeter is installed, the import of secondary evaporimeter is connected with magnetic valve A through magnetic valve B, and the outlet of secondary evaporimeter connects return line; The controlled connection controller of magnetic valve B.

The utility model has been owing to set up secondary evaporimeter at the drainpipe periphery, when main evaporator A, B defrosting, and the work that defrosts simultaneously 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 has guaranteed the unimpeded of cold air duct, makes refrigerator under the situation that guarantees temperature; For a long time operation, thus the operating efficiency of former machine improved.

The utility model improves simple in structure, practical, can effectively prevent icing obstruction of drainpipe of refrigerator, reliable operation, and efficient improves.

(4) description of drawings: Fig. 1 is the structural representation of the utility model.

Among the 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-loam cake, 18-cabinet, 19-refrigeration pipe, 20-defroster duct.

The (5) specific embodiment:

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

The operation principle of the utility model (seeing Fig. 1 for details): during refrigeration, controller 16 is opened, and makes compressor 1 get; The gas of the HTHP of discharging is through after condenser 2 condensations; Get into throttling arrangement 3 (directive expansion valve) step-down, low-temperature low-pressure refrigerant arrives main steaming device A8 and main steaming device B9 and evaporates, the heat around absorbing and lowering the temperature; Get back to compressor 1 acting then, reciprocation cycle work.Simultaneously, blower fan 15 absorbs the cold around the main evaporator A8, through the surface of cold air duct 14 entering refrigeration things 12, gets back to main evaporator A8 through the passage between main evaporator B9 fin then, and so reciprocation cycle is air-cooled, makes the temperature that refrigerates thing 12 reduce.Since magnetic valve A4 and magnetic valve B5 not electric, make secondary evaporimeter 7 can not form path, assurance is freezed to main evaporator A8 and main evaporator B9.

During defrosting, controller 16 conversion makes normally closed solenoid valve A4 and normally closed solenoid valve B5 simultaneously; The gas of the HTHP that compressor 1 is discharged directly passes through main evaporator A8 and secondary evaporimeter 7 respectively simultaneously, and the gas of HTHP flows into and makes that frost is dissolved into water droplet rapidly on the evaporator fin behind main evaporator A8 and the main evaporator B9, meanwhile; The gas of HTHP also passes through secondary evaporimeter 7 (the copper pipe soldering is below cabinet wall); Make the frosting inwall heat up and dissolving rapidly, because insulating interlayer 10 inwalls are the slope, so; The water of frosting flow into drainpipe 6 along the slope, discharges casing.During defrosting; Also can flow throttling device 3 next doors 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 high temperature and high pressure gas inflow evaporator A8 and evaporimeter B9 and defrost.

Claims

1. a defrosting block-resistant type refrigerator has cabinet and loam cake, insulating interlayer is installed in cabinet cabinet is divided into two parts up and down; Inner bag is equipped with on top at cabinet; There is spacing to constitute cold air duct between inner bag and the insulating interlayer, 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 the bottom; Main evaporator B is installed on sidepiece, and 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 through return line; The loop exit of compressor connects the import of main evaporator A through refrigeration pipe, in refrigeration pipe, is serially connected with condenser and throttling arrangement, with refrigeration pipe and be connected to defroster duct; Magnetic valve A is housed in the defroster duct, is furnished with controller control connection compressor, magnetic valve A, blower fan respectively; It is characterized in that: in insulating interlayer, be positioned at the drainpipe both sides secondary evaporimeter is installed, the import of secondary evaporimeter is connected with magnetic valve A through magnetic valve B, and the outlet of secondary evaporimeter connects return line; The controlled connection controller of magnetic valve B.