CN1254652C

CN1254652C - Refrigerating device

Info

Publication number: CN1254652C
Application number: CN01816973.2A
Authority: CN
Inventors: M·纽曼; H·克劳斯
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2000-10-06
Filing date: 2001-10-01
Publication date: 2006-05-03
Anticipated expiration: 2021-10-01
Also published as: EP1327112B1; ATE348989T1; CN1468359A; DE10049574A1; BR0114243A; DE50111705D1; EP1327112A1; WO2002029339A1; ES2276846T3

Abstract

The invention relates to a refrigerating device comprising a refrigerated inner chamber (3) which is enclosed by a heat-insulating housing (1) and which can be closed by a door (2) at the front side thereof, and an air circulation device for sucking in air from the inner chamber (3), guiding the air over a cooling surface and re-ejecting the air cooled in this way into the inner chamber (3) by means of a plurality of ejection openings formed on the inner surface of the housing. At least one air ejection opening (7, 8, 9) releasing an air flow (P2, P3) which is oriented from the inner surface towards the centre of the refrigerating chamber is provided below the plurality of air ejection openings.

Description

Refrigerating plant

Technical field

The present invention relates to a kind of refrigerating plant, its interior space is at least in part by air circulation device cooling, and air extracts from interior space, by a cooling surface conduction and follow by a plurality of taps that are formed on the shell inner surface and be discharged to again in this space.

Background technology

This refrigerating plant is for example known by EP0 532 870 B1.

Cooling or in the door zone during heating, close relatively cold air flows downward in interior space on the evaporimeter of air at rear wall in space in the refrigerating plant at no this air circulation device, and hot-air accumulates in top.Consequent thermograde especially will cause on large-sized refrigerating plant: in the upper area of interior space, can not reach the cold degree that is suitable for best storage, if on the contrary in lower area-when being lower than 0 °-danger that exists chilled goods to damage.By air circulation device this thermograde will be reduced.

The problem that overcomes thermograde in new-type refrigerating plant uses what is called " 0 ° of refrigeration lattice " to deal with largely, and food only can be fresh-keeping chronically on the temperature of freezing point more than a little in 0 ° of refrigeration lattice.More near the freezing point of water, thermograde should be littler, so that avoid chilled goods to be damaged by frost at this refrigeration lattice lower area for this temperature.But this function can not reach by the air throughput that improves EGR simply.Flowing velocity in the raising EGR not only causes the increase of refrigerating plant power consumption; And as by known among the GB 950 091, but the high flowing velocity in the EGR is impelled the evaporation of the food of storage wherein significantly and has been damaged its keeping quality thus.A substantive issue in the structure of the refrigerating plant with EGR is, reaches enough low thermograde with the flowing velocity in the space in alap.

In this respect, be proved to be improve to be worth by the known structure of EP 0 532 870 B1, because fall the sub-cooled that also additionally causes a upper edge region for the temperature that occurs with natural way from top to bottom in the interior space, this zone is generally so-called " butter lattice ".

Summary of the invention

Therefore task of the present invention is, the known refrigerating plant of EP 0 532 870 B1 is being continued to reduce to make further improvement on the direction of thermograde, wherein can not increase the power attenuation of air circulation device, and the work of refrigerating plant on low chilling temperature does not have because of undesirable freezing danger that causes that chilled goods damages.

This task will solve like this according to the present invention, promptly have an air tap in a plurality of air taps at least, the air stream that its output middle part from the inner surface to the cooling space is directed.

By just can on refrigerating plant, reach the reduction of a regional cooling load in the uniform distribution of shelf regional temperature to the additional simply a kind of like this air tap of air tap that proposes by EP 0 532 870 B1.

Decide on the position that the air tap is arranged on the inwall, can realize various required effect or by its combination.

By the top in interior space the hole being set can reach: the cold air of discharge flows the unsuitable chilled goods that can not distributed on the shelf to be stopped.In addition, the cold air stream that flows down like this can be with very little flowing velocity output, and it will be because its high relatively density will and flow through all sides that are placed on it chilled goods on the shelf that is assigned on all directions below being positioned at.

Select or additionally as another kind, air tap can be arranged on and be used to produce one in the zone of door and leave door and to the air stream of cooling space inner inclination orientation.Preferably this air tap extends on the whole width in interior space.

Directed in this manner air stream has especially impelled on the interior space mixing of air in the lattice zone.

Select as another kind, preferably additionally, also can design an air tap and be used for producing an air stream that is parallel to door.Air exchange between each lattice in the space in this air stream will impel, especially the leading edge of a shelf in space and the top that is installed in the slit between the leading edge of a shelf on the door in this air tap is set at are so that when producing air by this slit and flowing.And this air tap also preferably extends on the whole width in interior space.

Advantageously, on the passing away in the air tap is set at and extends below the top in space.

Description of drawings

Further feature of the present invention and advantage can be from below with reference to obtaining the description of accompanying drawing to embodiment.

Fig. 1 represents the cross section going up the zone according to the housing of refrigerating plant of the present invention and door.

The specific embodiment

The structure of this refrigerating plant is to a great extent corresponding to by the known device of EP 0 532 870 B1, thus for only needing brief description by the known device feature of the document at this.

The refrigerating plant of representing with part section 1 has a heat insulation housing 1 in the figure, and this housing can be closed with door 2 in its front side.Space 3 is divided into a plurality of lattice by the shelf 4 that is contained on the housing wall in the housing.Air-cooling apparatus comprises cold air channel 5, and this passage has covered interior space 3 whole rear walls basically, and a wall in this passage is made of the evaporator plate that is connected with the cold-producing medium circulating path of this refrigerating plant.Driving by a hair-dryer also arrives passing away 6 at last by the inswept evaporator plate of suction hole inhaled air that is located in cold air channel 5 lower areas, below the roof in this passing away space 3 in extending on the direction of door 2.First group of air tap 7 is arranged on roughly half place of passing away 6 length; It produces directed cooling air stream downwards in the lattice on interior space 3, shown in arrow P 1.Second group of air tap 8 extends on the whole width in interior space 3 substantially, second group of air tap 8 is formed in the wall that tilts to extend of passing away 6 in this embodiment, and they produce an air stream P2 who is tilted to down and leaves an orientation in interior space 3 thus.This air stream produces by means of the thin plate that is located at tap medium dip orientation in a unshowned scheme, and these taps are formed in the downside of basic horizontal of cold air channel.

Being positioned near the 3rd group of tap 9 of door also extends on the whole width in space 3.The 3rd group of tap 9 produces the cold air stream of a layer curtain form, and it flows downward between end edge that is loaded on shelf on the door 2 or container 11 and end edge that the opposite is loaded on the shelf 4 on the housing along the inboard of door 2.The major function that this air stream P3 has is, cooling door 2 and be stored in article on the shelf 11 of door 2.

The distribution of the free cross section of passing away 6 can be selected in this wise for hole 7,8,9 and when needing, and promptly the major part of cold air stream is discharged by hole 7,8.These holes can have appreciable cross-sectional area, and they may surpass the cross-sectional area of passage 6 and have flow resistance as pulvinus is housed, so that make air stream P1, the velocity of discharge of P2 reaches the air velocity that is lower than in the passing away 6.

The heat that edge by door 2 enters is with unshowned in the drawings middle part and especially carried by air stream P3 on the lower area in interior space 3, and the air of heating will be sucked by the suction hole of cold air channel 5 and be cooled again there.

Find out easily, by its in interior space in the top-down path air of heating stream P3 can prevent the formation of thermograde.Because flow in the intermediate space of this air-flow between the shelf 11 of the shelf 4 in interior space and door, it will never directly appear on the chilled goods.Therefore it can have the high speed of other air stream than interior space, and can not cause the undesirable drying of chilled goods.

Also can configuration difference to that indicated in the drawings, passing away 6 distributes to be similar to by the sidewall of the known mode of EP 0 532 870 B1 along last lattice 10.In the case, extend near the passing aways of door 2 always and have: with second group of tap group that tap 8 functions are identical, they respectively produce the air stream that an approximate horizontal and phase opposite house 2 are the 45 orientation from the inside of two side direction lattice 10; And one with the identical tap group of the 3rd tap group 9 functions, they are positioned on the both sides in space with facing with each other and each generation is tilted to down towards the air of the intermediate space orientation between the plate 4,11 and flows.An air tap group that is similar to group 7 is extended by the zone line of passing away diagonally from top to bottom.The orientation at this diagonal angle can be avoided: each the higher article such as the beverage carton of placing have on the shelf fully stopped this tap group.

Claims

1. refrigerating plant, having one is surrounded and space (3) in the refrigeration that its front side is closed by a door (2) by a heat insulation housing (1), and has an air circulation device, be used for from interior space (3) suction air, guiding this air to reach the air that then will cool off like this by a plurality of taps that are formed on the shell inner surface by a cooling surface is discharged to again in the space in this (3), wherein in a plurality of air taps, has an air tap (7 at least, 8,9), air stream (the P2 of its output orientation at middle part from the inner surface to the cooling space, P3), it is characterized in that: at least one air tap (7,8,9) be arranged on the top of housing (1) and export a downward air stream.

2. according to the refrigerating plant of claim 1, it is characterized in that: at least one air tap (8) is designed to produce the air stream (P2) of the inclined orientation of an inside of leaving door (2) and inside space (3).

3. according to the refrigerating plant of claim 1 or 2, it is characterized in that: at least one air tap is designed to produce an air stream (P3) that is parallel to the orientation of door (2).

4. according to the refrigerating plant of claim 3, it is characterized in that: described air tap extends on the whole width in interior space (3).

5. according to the refrigerating plant of claim 3, it is characterized in that: described air tap is set at the top, slit between the leading edge of a shelf (11) of the leading edge of a shelf (4) in interior space (3) and door (2).

6. according to the refrigerating plant of claim 1 or 2, it is characterized in that: air tap (7,8,9) is set on the passing away (6) below the top that extends interior space (3).