CN103477169B

CN103477169B - Refrigerator

Info

Publication number: CN103477169B
Application number: CN201280015694.5A
Authority: CN
Inventors: H·伊勒; T·比朔夫贝尔格; C·迪尔盖尔; P·福蒂亚迪斯
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2011-03-28
Filing date: 2012-03-09
Publication date: 2016-03-02
Anticipated expiration: 2032-03-09
Also published as: EP2691713B1; RU2013143743A; WO2012130584A2; PL2691713T3; US20140053593A1; CN103477169A; DE102011006260A1; ES2544837T3; RU2553251C2; EP2691713A2; WO2012130584A3

Abstract

There is heat insulation housing (2,3) and in the refrigerator of refrigerant loop, described housing crosses apotheca (4), described refrigerant loop comprises compressor (9), condenser (10), current limiter (12,17) and cooling apotheca (4) evaporimeter (18), wherein, current limiter (12,17) is arranged on the sidewall of housing (2) at least partly.

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator, particularly domestic refrigerator, have heat insulation shell and refrigerant loop, described heat insulation shell crosses the apotheca for article to be cooled, and described refrigerant loop comprises the evaporimeter of compressor, condenser, current limiter and cooling apotheca.The operation of this existing refrigerator is based on the following fact: compressor sucks cold-producing medium from evaporimeter in vapour form, and cold-producing medium due to compression insulated heat time cold-producing medium is supplied to condenser, at condenser place, the releasing heat while of condensation of refrigerant.The liquid refrigerant of acquisition like this along with it by current limiter and turn back to evaporimeter insulated cool and compressed by releasing.

Background technology

The degree of adiabatic cooling is the function of the pressure differential between condenser and evaporimeter.Hotter at the cold-producing medium in the exit of condenser, when reaching evaporimeter after compression removed by cold-producing medium, it is also hotter.Theoretically, the temperature of the cold-producing medium in the exit of condenser can be made close to the environment temperature at any place, condenser is to its heat of described environmental radiation, but the required size of condenser must be larger, and this temperature difference must be less.The cooling effect that can realize at condenser place also limits by the parasitic heat transmission between the upstream region of the heat of condenser and colder downstream area.When the downstream area ambient dynamic of the air heated in the upstream region at condenser at condenser, described downstream area can no longer by refrigerant cools to the temperature lower than described air.

Following refrigerator is known, and wherein, framework heater is provided for and prevents from being positioned condensation appears in the housing near the seal between the skeleton of housing and door.This framework heater comprises pipe, and described pipe is embedded in the refrigerant loop between compressor and condenser or is embedded into the downstream of condenser, to utilize the compression heat of cold-producing medium by the surface heating subjecting to condensation of housing more than dew point.Sensitiveness due to condensation derives from the thermal coupling of described surface and cooled apotheca, and therefore, the heat discharged by framework heater finally also flows in apotheca in obvious degree, thus produces adverse effect to the efficiency of refrigerator.

US2515212A discloses a kind of refrigerator, and wherein, current limiter is arranged between evaporimeter, to realize different temperature in the evaporimeter of the series connection of standard refrigerating chamber and refrigerating chamber.In order to overcome the insulation material layer of the dividing wall between encirclement standard refrigerating chamber and refrigerating chamber, current limiter extends along the rear wall of utensil contiguously with the condenser pipe of locating along rear wall.

Summary of the invention

The object of the invention is the efficiency improving refrigerator, particularly home appliances.

Above-mentioned purpose is by following realization: limit in the refrigerator of type in preamble, and current limiter is arranged on sidewall at least partially between the crust of the sidewall of housing and thermal insulation layer.Because it has little free cross section compared with other regions of refrigerant loop, therefore, current limiter contributes to the volume of refrigerant loop rarely, so there is no the amount increasing the cold-producing medium of operation needed for refrigerant loop in any obvious degree.Owing to being arranged on sidewall, therefore, current limiter is from the used heat discharged by the condenser be usually arranged on the rear portion of utensil.Therefore, sidewall is the relatively cold region of refrigerator shell, and makes can add the cold-producing medium of cool cycles by current limiter efficiently.

Current limiter is preferably arranged in the sidewall, current limiter is protected and externally loses.In order to can absorb and from current limiter transfer of heat rapidly, the crust of sidewall is preferably metal.

Current limiter is preferably coupled to crust, with guarantee it thermal insulation layer assemble refrigerator process in apply time and crust keep heat conductive contact.Thermal insulation layer produces in the mode of technical standard preferably by expanding in the hollow space making synthetic resin foam in the housing by crust gauge.

Current limiter and crust fast and simply combine and can realize by means of adhesive tape.

In order to prevent heat via current limiter conducts in evaporimeter, preferably only the upstream zone of current limiter is arranged on sidewall.

And the downstream section of current limiter can be positioned in known manner and leads to the suction line of compressor from evaporimeter.

Little in order at least make the pressure drop of cold-producing medium remain in the upstream zone of current limiter, this upstream zone preferably has larger cross section than downstream section.Because this upstream zone obviously should not increase the volume of refrigerant loop, upstream zone is preferably made to have the cavity diameter being less than 1 millimeter.

Enter cooling refrigeration agent efficiently between evaporimeter to come out to from condenser at cold-producing medium, upstream zone preferably has the length of at least 1 meter.In reality, the length of upstream zone will reach 2 meters in standard-sized domestic refrigerator.

In order to assemble refrigerator, advantageously, the downstream section of condenser and upstream zone are engaged with each other outside the thermal insulation layer of sidewall.

Refrigerant loop preferably has drying machine, and the cold-producing medium feeding pipe of drying machine is connected to the upstream extremity of the current limiter on sidewall, for flowing object.

Accompanying drawing explanation

Below, by describing exemplary embodiment referring to accompanying drawing, can obvious further feature and advantage of the present invention, accompanying drawing comprises:

Fig. 1 shows the perspective view that domestic refrigerator of the present invention is watched from front;

Fig. 2 shows the perspective view that refrigerator is watched from rear;

Fig. 3 shows the top view of a part for the plate of the crust of the sidewall forming refrigerator, and wherein current limiter section is fixed on described plate;

Fig. 4 shows the figure of the refrigerant loop of refrigerator.

Detailed description of the invention

Fig. 1 and 2 shows the perspective view of sales counter height formula domestic refrigerator 1.The heat insulation shell of this utensil is made up of the skeleton 2 of substantially rectangular shape and door 3, and described skeleton 2 and door 3 limit out apotheca 4 jointly.Skeleton 2 has known structure itself, and described structure has the polyurethane foam thermal insulation layer by shaping inner bag 5, the crust be bonded together by multiple element and the intermediate space between filling inner bag 5 and crust of plastics deep-drawing.The element of crust comprises two plate parts 6, and described two plate parts extend respectively on the sidewall of skeleton 2, and is connected to inner bag 5 at front baffle 7 place towards door 3 of skeleton 2.

Machinery compartment 8 is cut out at the rear portion place close to bottom of skeleton 2, and keeps coolant compressor 9.Condenser 10 is connected to the compression fittings of compressor 9.Condenser 10 is illustrated as the line tubing heat exchanger on the rear wall of the skeleton 2 of the top being arranged on machinery compartment 8 in fig. 2, but also can be condenser 10, the particularly compact tubing heat exchanger with fin of the other types being also contained in machinery compartment 8 and being cooled by fan pressure.The downstream tap of condenser 10 is connected to flow restrictor duct 12 by means of sleeve pipe 11, described flow restrictor duct 12 the extending in an annular manner on the inner side of thermal insulation layer of a plate part 6 wherein.

Sleeve pipe 11,16 makes it possible to assemble utensil 1, wherein, before plate part 6 joins inner bag to, current limiter 12 is fixed in one of them plate part 6, skeleton 2 is joined together, the end of current limiter 12 is exposed in machinery compartment 8, and then skeleton is foamed, last current limiter 12 embeds in refrigerant loop by means of sleeve pipe 11,16.

Fig. 3 shows the perspective view of the inner side of the plate part 6 with flow restrictor duct 12.Part 6 comprises smooth central plate 13, and described central plate is provided for the crust of the sidewall forming skeleton 2, and flow restrictor duct 12 is fixed to described central plate 13 by means of adhesive strip 14.The utensil 1 completed, extend to front baffle 7 or its rear portion of utensil 1 from the lug 15 of central plate 13 bending, and be connected to inner bag 5 or squab panel (not shown) at this in the impervious mode of foam.

Again referring to Fig. 1, flow restrictor duct 12 is connected to the second thinner flow restrictor duct 17 by the second sleeve pipe 16 be arranged in machinery compartment 8, and described flow restrictor duct 17 crosses the thermal insulation layer in skeleton 2, to arrange with guaranteeing evaporimeter 18 and apotheca 4 close thermal contact.As schematically shown in fig. 4, flow restrictor duct 17 directly extends along the surface of suction line 19 or in described suction line 19, and described suction line 19 leads to compressor 9 from evaporimeter 18.

Because the pipe with little internal diameter (usually approximate 0.8 millimeter) is used for flow restrictor duct 12, therefore, compared with the conventional refrigerants loop of the refrigerator of same size, the capacity of refrigerant loop changes very little generally, although it is long that flow restrictor duct 12 is generally 1-2 rice, thus the amount of the circulating refrigerant needed for efficient operation also changes very little.Because flow restrictor duct 12 extends at interval along central plate 13 and the lug 15 being connected to inner bag 5, therefore, can ignore from flow restrictor duct 12 via the hot-fluid of the connecting portion between plate part 6 and inner bag 5 to apotheca 4.Flow restrictor duct 12 is due to the spaced apart and heat that can not be subject to from condenser 10 radiation of itself and condenser 10.Therefore, the cooling of more efficient cold-producing medium can be realized compared with utilizing flow restrictor duct 12 and condenser 10 being expanded the volume of flow restrictor duct 12.

Utensil 1 is preferably oriented to: the sidewall comprising flow restrictor duct 12 exposes, and makes can pass to environment rapidly from the heat of flow restrictor duct 12 radiation.But the present invention also can be used for, and (if only with very little scope) has in the refrigerator of hiding sidewall, such as built-in utensil or the sales counter height formula utensil that connects with other objects in side.Plate part 6 is in this as thermmal storage unit operations, and described thermmal storage unit operates at compressor 9 and drives during refrigerant circulation and absorbs heat from flow restrictor duct 12.For this refrigerator, at the stop phase subsequently of compressor, the heat of plate part 6 also can be distributed in environment.

Claims

1. a refrigerator, there is heat insulation housing (2,3) and refrigerant loop, described housing crosses apotheca (4), described refrigerant loop comprises compressor (9), condenser (10), current limiter (12,17) and cooling apotheca (4) evaporimeter (18), it is characterized in that, current limiter (12,17) at least partially in being arranged on sidewall between the crust (6) of the sidewall of housing (2) and thermal insulation layer, with cool cycles by cold-producing medium herein.

2. refrigerator as claimed in claim 1, it is characterized in that, current limiter (12,17) is attached to crust (6).

3., as the refrigerator as described in arbitrary in foregoing Claims, it is characterized in that, current limiter (12,17) comprises upstream zone and downstream section, and the part be arranged on sidewall of current limiter is upstream zone.

4. refrigerator as claimed in claim 3, it is characterized in that, the downstream section of current limiter (12,17) is positioned at and leads to the suction line (19) of compressor (9) from evaporimeter (18).

5. refrigerator as claimed in claim 3, it is characterized in that, downstream section has less cross section compared with upstream zone.

6. refrigerator as claimed in claim 3, it is characterized in that, upstream zone has the cavity diameter being less than 1mm.

7. refrigerator as claimed in claim 3, it is characterized in that, upstream zone has the length of at least 1 meter.

8. refrigerator as claimed in claim 3, is characterized in that, downstream section and upstream zone are incorporated into each other the thermal insulation layer of sidewall is external.

9. the refrigerator according to any one of claim 1-2,4-8, is characterized in that, described refrigerator is domestic refrigerator

10. refrigerator as claimed in claim 2, it is characterized in that, described current limiter (12,17) is attached to described crust (6) and is realized by adhesive tape (14).