CN109416212A

CN109416212A - Refrigerating appliance

Info

Publication number: CN109416212A
Application number: CN201780039516.9A
Authority: CN
Inventors: C·迪尔盖尔; J·哈伦; A·斯柏林
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2016-06-27
Filing date: 2017-06-14
Publication date: 2019-03-01
Anticipated expiration: 2037-06-14
Also published as: CN109416212B; DE102016211438A1; WO2018001732A1

Abstract

A kind of refrigerating appliance, it has at least one first storage chamber (2), evaporator room (5) and ventilation device (11), first storage chamber can be closed by door (8), the evaporator room is arranged in evaporator (6) that is more lower than first storage chamber (2) horizontal upper and including intermittent operation, and the evaporator room is connected to by the pressure channel (12) of suction passage (10) and the entrance (14) for rising to storage chamber (2) with the storage chamber (2), the ventilation device is used to drive the air circulation between the storage chamber (2) and evaporator room (5).Ventilation device is functionally coupled on door (8), so as in the downtime that evaporator (6) is not run, in the open position state of door (8) with following Power operation: the power is enough to inhibit the slave storage chamber in pressure channel (12) to point to the air stream of evaporator room.

Description

Refrigerating appliance

Technical field

The present invention relates to a kind of refrigerating appliance, which has at least one first storage chamber, evaporator room and leads to Wind apparatus, first storage chamber can be by door terminations, which drives storage chamber for cooled and stored room and steam Send out the air circulation between device room.In order to realize uniform Temperature Distribution in storage chamber, in this refrigerating appliance, the two Room passes through two channel connections, wherein access road is arranged in level more higher than exit passageway, and fresh cold air passes through The access road enters in storage chamber, and heated air is back to evaporator room by the exit passageway.

Background technique

If evaporator room is arranged in level more lower than the first storage chamber, pressure channel must be provided with, the pressure Channel bridges the difference in height between evaporator room and entrance.This pressure channel is usually in the wall of apparatus body, in storage chamber Extend between the heat insulation layer of storage chamber.During the runing time of evaporator, pressure channel is colder than storage chamber, and During the downtime (Standzeit) of evaporator, temperature gradually becomes equal.

However, being deposited if the door of storage chamber is opened and warm ambient air enters in storage chamber It puts and is likely to occur apparent temperature difference between room and pressure channel, this causes cold air to sink in pressure channel and by storing Hot-air in room is substituted, and the deposit of moisture of hot-air is on the wall of pressure channel.In general, when air is in evaporator and ventilation When being recycled in an exhaust gas again in next runing time of device, although a part of the moisture is evaporated again.However, Unevaporated residue may accumulate in as time goes by pressure channel and keep the pressure channel more and more narrow, to deposit Cell compartment is put only deficiently to be cooled down.

Although baffle can be arranged in pressure channel, to be closed the baffle during the downtime of evaporator, and And damp and hot air is therefore inhibited to invade pressure channel.However find herein, if baffle does not seal closely, this baffle It can aggravate problem rather than alleviate problem, because the moisture condensed tends to accumulate at the narrow portion position around baffle (at that In be also mostly wind sheltering and hardly re-evaporation), however, these moisture limit the movement of baffle in the case of freezing Freedom degree, and more flowing maskings position can be only generated in this way: it is flowed at these and has condensation at masking position Object accumulation.

Summary of the invention

The object of the present invention is to provide a kind of refrigerating appliances and a kind of method for running refrigerating appliance, by this Refrigerating appliance and this method can be to avoid the icings of pressure channel.

" refrigerating appliance " is particular it is understood that for Domestic refrigerator --- i.e. following refrigerating appliance: the refrigerating appliance is in (or may also be in catering field) be for household management and particularly in determining at a temperature of storage family's dosage in business Food and/or beverage, the refrigerating appliance is, for example, that refrigerating box, household freezer, refrigerating combination, reach in freezer or grape wine are deposited Container.

On the one hand the task solves in the following way: in a kind of refrigerating appliance, which has at least one First storage chamber, evaporator room and ventilation device, first storage chamber can be by door terminations, which is arranged in than The lower evaporator that is horizontal upper and including intermittent (intermittierend) operation of one storage chamber, and the evaporator Room is connected to by the pressure channel of suction passage and the entrance for rising to storage chamber with storage chamber, which deposits for driving The air circulation between room and evaporator room is put, which is functionally coupled on door, not run in evaporator Downtime in, in the open position state of door, with following Power operation in pressure channel: the power is enough to inhibit from storage Room points to the air stream of evaporator room.

Moisture penetrates into order to prevent, and in principle, it is exactly enough that ventilation device, which only generates required following back pressure: the back It presses and state is remain stationary to flowing pressure for resisting the air in pressure channel.In fact, for safety, ventilation can be filled Set power selection obtain it is more slightly higher, so that the air stream for pointing to the first storage chamber from evaporator room be made to keep in pressure channel It flows (in Gang halten).

On the other hand, this air stream should not be too strong, so as not to make the hot-air invaded by open door in large quantities It is inhaled into evaporator room and is accelerated on an evaporator there frosting, rather than is entered in pressure channel.Therefore, with it is logical Power of the wind apparatus when door is closed in the runing time of evaporator is compared, and ventilation device is being steamed when door is opened The power sent out in the downtime of device is preferably lower.

During the runing time of evaporator, the power of ventilation device can be unrelated with the position state of door；However, it is preferred that logical The power of wind apparatus is lower than when the door is closed when door is opened, to prevent unnecessary frosting on an evaporator.

Because making moisture far from pressure channel by ventilation device operation, it is possible to which arrangement can be adjusted there The risk for freezing (Festfrieren) may be not present in baffle.

Because not needing closely closed guard --- to prevent the frosting around baffle, it is possible to will remain in first Thermomechanical element in the temperature of storage chamber is used as the driving device for baffle.

In the refrigerating appliance with multiple storage chambers, this baffle that can be adjusted is particularly useful for control cold air Distribution from evaporator room to storage chamber.

If the door of the second storage chamber is opened, it would be possible that significantly, do not run ventilation device, so as not to from second Storage chamber sucks hot-air.

If the second storage chamber is arranged in level more lower than evaporator room, this point is especially suitable.

Evaporator room should have Defrost heater.

However, when the door of the first storage chamber is opened, ventilation should be kept to fill in the time of this Defrost heater operation Set and do not run, so as to there not additionally by damp-heat air be blown into storage chamber or by from storage chamber convey cold air and Postpone defrosting process.

The task is also solved by a kind of for running the method for refrigerating appliance, the refrigerating appliance have at least one the One storage chamber, evaporator room and ventilation device, first storage chamber can be by door terminations, which is arranged in than first Storage chamber is lower horizontal upper and includes the intermittent evaporator run, and the evaporator room passes through suction passage and rising Pressure channel to the entrance of storage chamber is connected to storage chamber, and the ventilation device is for driving between storage chamber and evaporator room Air circulation, in the method, the position of monitoring door in the downtime of evaporator, and detect open when raising The power of ventilation device, to inhibit to point to the air stream of evaporator room from storage chamber.

Detailed description of the invention

Other features and advantages of the present invention are obtained by being described below for the embodiment referring to attached drawing.

Fig. 1 shows the vertical sectional view of the ontology of refrigerating appliance according to the present invention.

Specific embodiment

Domestic refrigerator shown in Fig. 1 is a kind of combined utensil, which has common on the top of ontology 1 Compartment 2 and lower part have freezing cell compartment 3.It is mounted with evaporator room 5 in horizontal subdivision wall 4 between cell compartment 2,3, The evaporator room has (usual lamellar structure form) evaporator 6 and Defrost heater 7.

--- door 8 of neighbouring closing common refrigeration cell compartment 2 --- is configured with air and goes out on the bottom of common refrigeration cell compartment 2 Mouthfuls 9, short suction passage 10 from the air outlet slit partition wall 4 internal stretch to evaporator room 5 leading edge.It is steaming It sends out and is mounted with ventilation device 11 in the back edge of device room 5；Pressure channel 12 from the back edge along ontology 1 rear wall 13 to On extend up to the air intake 14 of common refrigeration cell compartment 2 in the rear corner of the ontology.Pressure channel 12 passes through rear wall 13 Porous heat insulation layer 15 and ambient enviroment thermal insulation；The pressure channel is isolated with common refrigeration cell compartment 5 in cover plate 16, with heat insulation layer 15 compare, and the thickness and insulating effect of the cover plate are smaller.

The air outlet slit 17 of freezing cell compartment 3 is located on the ceiling near door 18；The suction passage 19 to set out from here exists It crosses at the leading edge of evaporator room 5 with suction passage 10.From the second pressure channel 20 of ventilation device 11s --- with it is cold Freeze cell compartment to be isolated by cover plate 21 --- it is extended downward on rear wall 13 in the height of ladder 22, with known below the ladder Mode be mounted with machine chamber 26, the machine chamber have supply evaporator 6 compressor 27.In the height of ladder 22, pressure Channel 20 horizontally extends forwardly into air intake 23 of the freezing cell compartment 3 at the leading edge of ladder 22.In general, freezing cell compartment 3 One upper edge comprising multiple drawer elements, and in these drawer elements in the height of the horizontal section of cover plate 21, from And make the cold air entered in freezing cell compartment 3 by air intake 23 at least partly downward bias at the rear side of drawer element Turn.By the way that all drawer elements are surround arrangement (umsp ü len) in the upper side and lower side of cold air, freezing cell compartment 3 may be implemented In uniform Temperature Distribution.

In order to can satisfy common refrigeration cell compartment 2 and freeze the different refrigeration demands of cell compartment 3, arranged in pressure channel 11 There is baffle 24.Baffle 22 can be controlled by the control unit 25 of electronics, and the electronic control unit is also according to common refrigeration cell compartment 2 The operation of compressor 27 and ventilation device 11 is controlled with the measuring signal of the temperature sensor in freezing cell compartment 3.In freezer When the refrigeration demand of room 3, substantially remain turned-off baffle 24 by control unit 25, the cold air recycled by ventilation device 11 Specially it is conveyed to freezing cell compartment 3.On the contrary, staying open baffle 22 in the refrigeration demand of common refrigeration cell compartment 2；At this In the case of kind, cold air is assigned in two cell compartments 2,3.

According to a kind of variant schemes of simplification, baffle 24 thermomechanically is controlled particularly by pressure gauge 31, in the pressure In meter, the medium of tight closure expansion or shrinkage under the influence of the temperature of common refrigeration cell compartment 2, wherein pressure caused by thus 31 deformation of meter is regulated baffle 24.In this case, baffle 24 can not completely open position state with completely close Binary system switching is carried out between the state of position.Alternatively, when compressor 27 is run, usually two cell compartments 2,3 are cooled down simultaneously, And when the temperature of common refrigeration cell compartment 2 is from top close to preferred temperature, the opening degree of baffle 24 continuously reduces, until Reach such as the next state: in this state, the cold air stream for being conveyed to normal compartment 2 is just sufficiently strong, is passed through with compensation exhausted Heat stream of the thermosphere 15 from ambient enviromentBecause baffle 24 is herein in the conveying of no external energy In the case of run, so the baffle does not need to be wired, the electricity temperature sensor in normal compartment 2 can also be saved, This can be realized simple and cost-effective installation.Here, control unit 25 is based only upon the temperature sensor 28 in freezing cell compartment 6 Measuring signal control the operation of compressor 27 and ventilation device 11.

If the refrigeration demand in two cell compartments 2,3 is temporarily all satisfied, that is to say, that in the first case described above, If two temperature sensors all indicate corresponding cell compartment lower than shutdown temperature, in the latter case, if freezing cell compartment 3 Temperature sensor 28 indicates that corresponding cell compartment lower than shutdown temperature, then turns off compressor 27 and ventilation device 11, and evaporator room 5 Air stream between cell compartment 2,3 stagnates (Erliegen).If opening door 28 at this time and ambient air entering commonly In compartment 2, then the temperature in pressure channel 12 is lower than the temperature in common refrigeration cell compartment 5.If baffle at the same time 24 are not hermetically sealed, then the cold air in pressure channel 12 tends to flow downward to evaporator room 5, have height as a result, The hot-air (its in pressure channel 12 at a temperature of tend to frosting) of moisture content will be inhaled into pressure channel 12.

In order to prevent this situation, control unit 25 connect with the open door sensor 29 on door 8 and is arranged for opening Door sensor 29 is shown at least so runs ventilation device 11 for a long time when door 8 is opened, and (if necessary) is preferred Ventilation device 11 is so continued to run for a long time after the closing of door 8, so that the outside air of intrusion has normal refrigeration lattice The temperature of room 2.

Door 8 open when operation ventilation device 11 should not result in: by air exchange unavoidable when door is opened into The surrounding air entered is inhaled into evaporator room 5 and is heated by suction passage 10.Therefore, in the opening of door 8 and compressor In the case where 27 shutdowns, the power ratio of ventilation device 11 is much smaller when compressor 27 is run (typically at least less than the power Half), and the power is preferably just enough to overcome tieing up in pressure channel 12 to flowing pressure and with alap speed Hold the air stream in the direction in pressure channel 12.For this purpose, the revolving speed of ventilation device 11 can be adjusted；But it controls It is also to meet the requirements that unit 25 processed, which in this time pulse applies service voltage, operation of the control unit in compressor 27 The service voltage is continually applied on ventilation device 11 by period.

Control unit 25 also controls the operation of Defrost heater 7.A kind of expansion scheme according to the present invention, if defrosting adds Hot device 7 is when door 8 is opened in operation, then control unit 25 can turn off ventilation device 11, because in this case, leading to The operation of wind apparatus 11, which may cause the damp-heat air in evaporator room 5 and deposit in pressure channel 12, to be frosted, and is defrosted The heat of journey enters in common refrigeration cell compartment 5.

According to another expansion scheme, control unit 25 also connect with the open door sensor 30 of freezing cell compartment 3 and use is arranged While Yu Men 18 is opened, prevent from running ventilation device 11 in the case where door 8 is opened, because in this case, passing through The cold air that air intake 23 enters household freezer 6 mainly passes through door 18 and leaves and will be substituted by the outside air of heat, The outside air is entered in evaporator room 5 by suction passage 19.

During compressor 25 is run and supplies fresh refrigerant to evaporator 6, the opening of any door 8 or 18 all may Leading to the power of ventilation device 11 reduces, and is blown from utensil also for preventing cold air from passing through the door 8 or 18 opened Being drawn into ambient air in evaporator room 5, (this will will lead to the serious knot on evaporator 6 Frost).Therefore, the frequency that evaporator 6 must defrost can be reduced, which improve the energy efficiencies of utensil.

Reference signs list

1 ontology

2 common refrigeration cell compartments

3 freezing cell compartments

4 partition walls

5 evaporator room

6 evaporators

7 Defrost heaters

8

9 air outlet slits

10 suction passages

11 ventilation devices

12 pressure channels

13 rear walls

14 air intakes

15 heat insulation layers

16 cover plates

17 air outlet slits

18

19 suction passages

20 pressure channels

21 cover plates

22 ladders

23 air intakes

24 baffles

25 control units

26 machine chambers

27 compressors

28 temperature sensors

29 open door sensors

30 open door sensors

31 pressure gauges

Claims

1. a kind of refrigerating appliance, the refrigerating appliance has at least one first storage chamber (2), evaporator room (5) and ventilation dress It sets (11), first storage chamber can be closed by door (8), and the evaporator room is arranged in than first storage chamber (2) Evaporator (6) that is lower horizontal upper and including intermittent operation, and the evaporator room by suction passage (10) and The pressure channel (12) for the entrance (14) for rising to the storage chamber (2) is connected to the storage chamber (2), and the ventilation device is used Air circulation between driving storage chamber (2) and evaporator room (5), which is characterized in that the ventilation device (11) is in function On be coupled on the door (8), so as in the downtime that the evaporator (6) is not run, the open position in the door (8) With following Power operation in state: the power is enough to inhibit pointing in the pressure channel (12) from the storage chamber (2) The air stream of the evaporator room (5).

2. refrigerating appliance according to claim 1, which is characterized in that determine the power of the ventilation device (11), so as to The air stream for pointing to first storage chamber (2) from the evaporator room (5) is set to keep stream in the pressure channel (12) It is dynamic.

3. refrigerating appliance according to claim 1 or 2, which is characterized in that with the ventilation device (11) in the door (8) Power in the case of closing in the runing time of the evaporator (6) is compared, and the ventilation device (11) is beaten in the door (8) Power in the case of opening in the downtime of the evaporator (6) is lower.

4. refrigerating appliance according to any one of the preceding claims, which is characterized in that the control of the ventilation device (11) Unit (25) processed is arranged for beating the ventilation device (11) in the door (8) in the runing time of the evaporator (6) Power regulation in the case of opening must be than lower when the door (8) are closed.

5. refrigerating appliance according to any one of the preceding claims, which is characterized in that baffle (24) cloth that can be adjusted It sets in the pressure channel (12).

6. refrigerating appliance according to claim 5, which is characterized in that according to the temperature heat engine of first storage chamber (2) Drive to tool the baffle (24).

7. refrigerating appliance according to claim 5, which is characterized in that the baffle (24) is driven by pressure gauge (31) It is dynamic.

8. refrigerating appliance according to any one of the preceding claims, which is characterized in that can be closed by door (18) Second storage chamber (3) is connected to the evaporator room (5).

9. refrigerating appliance according to claim 8, which is characterized in that described control unit (25) setting is for described the The door (18) of two storage chambers (3) runs the ventilation device (11) not when opening.

10. refrigerating appliance according to claim 8 or claim 9, which is characterized in that second storage chamber (3) is arranged in than institute It states in the lower level of evaporator room (5).

11. refrigerating appliance according to any one of the preceding claims, which is characterized in that the evaporator room (5) has Defrost heater (7).

12. refrigerating appliance according to claim 11, which is characterized in that described control unit (25) is arranged for described Defrost heater (7) runs the ventilation device (11) not when running.

13. a kind of method for running refrigerating appliance, the refrigerating appliance has at least one first storage chamber (2), evaporation Device room (5) and ventilation device (11), first storage chamber can be closed by door (8), and the evaporator room is arranged in than institute The lower evaporator (6) that is horizontal upper and including intermittence operation of the first storage chamber (2) is stated, and the evaporator room passes through Suction passage (10) and the pressure channel (12) of entrance (14) for rising to the storage chamber (2) are connected to the storage chamber (2), The ventilation device is used to drive the air circulation between storage chamber (2) and evaporator room (5), in the method, described The position state of the door (8) is monitored in the downtime of evaporator (6), and when detecting that the door (8) are opened described in raising The power of ventilation device (11), to inhibit to point to the air stream of the evaporator room (5) from the storage chamber (2).