CN103477169A

CN103477169A - Refrigerator

Info

Publication number: CN103477169A
Application number: CN2012800156945A
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: 2013-12-25
Anticipated expiration: 2032-03-09
Also published as: ES2544837T3; WO2012130584A2; WO2012130584A3; PL2691713T3; CN103477169B; DE102011006260A1; RU2013143743A; EP2691713A2; RU2553251C2; US20140053593A1; EP2691713B1

Abstract

In a refrigerator having a thermally insulating housing (2, 3) which surrounds a storage chamber (4) and having a refrigerant circuit which comprises a compressor (9), a condenser (10), a restrictor (12, 17) and an evaporator (18) which cools the storage chamber (4), the restrictor (12, 17) is arranged at least partially on a side wall of the housing (2).

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator, domestic refrigerator particularly, 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 with vapor form from evaporimeter, and when cold-producing medium heats due to compression with being adiabatic, cold-producing medium is supplied to condenser, and at the condenser place, condensation of refrigerant is releasing heat simultaneously.The liquid refrigerant so obtained along with it by current limiter and turn back to evaporimeter insulated coolingly be disengaged compression.

Background technology

Adiabatic cooling degree is the function of the pressure differential between condenser and evaporimeter.Cold-producing medium in the exit of condenser is warmmer, and while after cold-producing medium is removed compression, reaching evaporimeter, it is also hotter.Theoretically, can make the temperature of cold-producing medium in the exit of condenser approach 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 the condenser place is limited by the upstream region of heat of condenser and the parasitic heat transmission between colder downstream area also.The air heated in the upstream region at condenser when flowing around the downstream area of condenser, described downstream area can be no longer by refrigerant cools to the temperature lower than described air.

Following refrigerator is known, and wherein, the framework heater is provided for and prevents from condensation occurring near the housing seal between the skeleton that is positioned 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, so as the compression heat of utilizing cold-producing medium by the surface heating that subjects to condensation of housing to more than dew point.Because the sensitiveness of condensation derives from the thermal coupling of described surface and the apotheca be cooled, therefore, during the heat discharged by the framework heater finally also flows into apotheca on obvious degree, thereby the efficiency of refrigerator is produced to adverse effect.

Summary of the invention

The objective of the invention is to improve the efficiency of refrigerator, particularly home appliances.

Above-mentioned purpose is by following realization: in preamble, limit in the refrigerator of type, current limiter is arranged on the sidewall of housing at least partly.Because it is compared and have little free cross section with other zones of refrigerant loop, therefore, current limiter contributes to the volume of refrigerant loop rarely, therefore on any obvious degree, does not increase the amount of the required cold-producing medium of operation refrigerant loop.Owing to being arranged on sidewall, therefore, current limiter is avoided the used heat discharged by the condenser on the rear portion that usually is arranged on utensil.Therefore, sidewall is the relatively cold zone of refrigerator shell, and makes and can add efficiently cool cycles by the cold-producing medium of current limiter.

Current limiter makes current limiter be protected and cannot see from outside in preferably between the crust of sidewall and thermal insulation layer, being arranged on sidewall.In order can to absorb and from current limiter transfer of heat rapidly, the crust of sidewall is preferably metal.

The current limiter preferred combination, to crust, keeps heat conduction to contact with crust to guarantee it when thermal insulation layer applies in the process of assembling refrigerator.Preferably by making in the hollow space of synthetic resin foam in the housing by the crust gauge to expand, the mode with technical standard produces thermal insulation layer.

Can realizing by means of adhesive tape with simple combination fast of current limiter and crust.

In order to prevent that heat is transmitted in evaporimeter via current limiter, 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 from evaporimeter and leads to the suction line of compressor.

For the pressure drop that can at least in the upstream zone of current limiter, make cold-producing medium remains littlely, this upstream zone preferably has larger cross section than downstream section.Because this upstream zone should obviously not increase the volume of refrigerant loop, preferably make upstream zone there is the cavity diameter that is less than 1 millimeter.

In order to come out to and to enter cooling refrigeration agent efficiently between evaporimeter 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, with for flowing purpose.

The accompanying drawing explanation

Below, by referring to accompanying drawing, describing exemplary embodiment, 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 the place ahead;

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

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

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

The specific embodiment

Fig. 1 and 2 shows the perspective view of sales counter height formula domestic refrigerator 1.The heat insulation shell of this utensil is comprised of skeleton 2 and the door 3 of essentially rectangular shape, 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 the intermediate space between the inner bag 5 of plastics deep-drawing moulding, the crust be bonded together by a plurality of elements and filling inner bag 5 and crust.The element of crust comprises two plate parts 6, and described two plates part is extended respectively on the sidewall of skeleton 2, and is connected to inner bag 5 at 7 places of the front baffle towards door 3 of skeleton 2.

Machinery compartment 8 is cut out at the place, rear portion that approaches bottom of skeleton 2, and keeps coolant compressor 9.Condenser 10 is connected to the compression fittings of compressor 9.Condenser 10 in Fig. 2, be illustrated as being arranged on machinery compartment 8 above the rear wall of skeleton 2 on spool formula heat exchanger, but can be also also be contained in machinery compartment 8 and force the condenser 10 of cooling other types, the particularly compact tubing heat exchanger with fin by fan.The downstream joint of condenser 10 is connected to flow restrictor duct 12 by means of sleeve pipe 11, and described flow restrictor duct 12 is extending with circular pattern of a plate part 6 therein on the inboard of thermal insulation layer.

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

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

Referring to Fig. 1, the second sleeve pipe 16 be arranged in machinery compartment 8 is connected to the second thinner flow restrictor duct 17 by flow restrictor duct 12 again, and described flow restrictor duct 17 is crossed in the thermal insulation layer of skeleton 2, to guarantee evaporimeter 18 and apotheca 4 close thermal, arranges contiguously.As Fig. 4 is schematically shown, flow restrictor duct 17 is directly along the surface of suction line 19 or, in the interior extension of described suction line 19, described suction line 19 leads to compressor 9 from evaporimeter 18.

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

Utensil 1 preferably is oriented to: the sidewall that comprises flow restrictor duct 12 exposes, and makes from the heat of flow restrictor duct 12 radiation and can pass to environment rapidly.Yet the present invention also can be used for (if only with very little scope) to have in the refrigerator of hiding sidewall, for example built-in utensil or the sales counter height formula utensil that joins at side and other objects.Plate part 6 is in this as the thermmal storage unit operations, and described thermmal storage unit absorbs heats from flow restrictor duct 12 when compressor 9 operations and driving refrigerant circulation.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, domestic refrigerator particularly, there is heat insulation housing (2,3) and refrigerant loop, described housing crosses apotheca (4), and described refrigerant loop comprises compressor (9), condenser (10), current limiter (12,17) and the evaporimeter (18) of cooling apotheca (4), it is characterized in that, current limiter (12,17) is arranged on the sidewall of housing (2) at least partly.

2. refrigerator as claimed in claim 1, is characterized in that, current limiter (12,17) is arranged on sidewall between the crust (6) of sidewall and thermal insulation layer.

3. refrigerator as claimed in claim 2, is characterized in that, current limiter (12,17) particularly is attached to crust (6) by adhesive tape (14).

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

5. refrigerator as claimed in claim 4, is characterized in that, the downstream section of current limiter (12,17) is positioned at from evaporimeter (18) and leads to the suction line (19) of compressor (8).

6. refrigerator as described as claim 4 or 5, is characterized in that, downstream section (17) is compared and had less cross section with upstream zone (12).

7. as arbitrary described refrigerator in claim 4-6, it is characterized in that, upstream zone (12) has the cavity diameter that is less than 1mm.

8. as arbitrary described refrigerator in claim 4-7, it is characterized in that, upstream zone (12) has the length of at least 1 meter.

9. as arbitrary described refrigerator in claim 4-8, it is characterized in that, downstream section (17) and upstream zone (12) are incorporated into each other the thermal insulation layer of sidewall is external.