CN201206924Y

CN201206924Y - Refrigerator

Info

Publication number: CN201206924Y
Application number: CNU2008200356285U
Authority: CN
Inventors: 若普·亚历山大; 柏玉发; 陶锋
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd
Priority date: 2008-04-29
Filing date: 2008-04-29
Publication date: 2009-03-11
Anticipated expiration: 2018-04-29
Also published as: WO2009132940A3; EP2283288A2; WO2009132940A2; RU2010145775A

Abstract

A refrigerator comprises a box body with an internal storage room, and a movable door body arranged on the box body and used for opening or closing the internal storage space; a drainage pipe is arranged inside the box body to guide the defrosted water formed in the internal storage room out of the box body; a pressure balance device is arranged on the drainage pipe to balance the air pressure inside and outside the box body; the pressure balance device comprises a drainage device arranged at the tail end of the drainage pipe and an air intake device arranged near the tail end of the drainage pipe; and the drainage device does not store the defrosted water and prevents the external air entering into the drainage pipe.

Description

Refrigerator

[technical field]

The utility model relates to a kind of household electrical appliance, relates in particular to a kind of household electric refrigerator.

[background technology]

The drawback of conventional refrigerator is: owing to have pressure differential between the inside storeroom air of refrigerator and the external environment air, cause the very big strength of door needs of refrigerator to open.U.S. Pat 5,499, No. 514 and U.S. Pat 5,557, all disclosed the method that solves this drawback No. 942: the by-pass line with unidirectional air inlet function is installed, and it is curved at the end of drainage pipeline the water storage of a U type to be set on the defrost water drainage pipeline of storeroom.When the user opened body, extraneous air entered into inner storeroom by by-pass line, thus the unlatching of the convenient door of balance external and internal pressure difference; The curved design of U type water storage has sealed the end of drainage pipeline on the other hand, makes that when door is in closed condition hot outside can't enter into inner storeroom by this drainage pipeline end.The drawback of improving design in this is: because U type water storage always has water to store in bending, open in the process of door the user, the suction that the external and internal pressure difference produces can be guided the defrost water of U type water storage in curved and be moved upward in drainage pipeline, the water that moves upward can fall back to again after the door body is opened during U type water storage bends, the water that moves upward and the water of falling all can produce the noise that gurgles in motion process, the designer that this noise drawback is a refrigerator does not wish to see.

[summary of the invention]

The purpose of this utility model is to provide a kind of refrigerator that can balance storeroom external and internal pressure difference can eliminate the noise of defrost water again.

For realizing above-mentioned utility model purpose, the refrigerator of a kind of embodiment of the present utility model comprises the casing with inner storeroom, and be installed in the movable door body that is used to open and close this internal storage space on the casing, the defrost water that forms in should the inside storeroom is installed in this casing is exported to the outer drainage pipeline of casing, the pressure equaliser of balance box inner air and outer air pressure is set on this drainage pipeline, this pressure equaliser comprises the drainage arrangement that is arranged on the drainage pipeline end and is arranged on the inlet duct of close drainage pipeline end, this drainage arrangement does not store defrost water, and stops extraneous air to enter drainage pipeline.

As further improvement of the utility model, described drainage arrangement comprises the single slope drainage valve that is installed in the drainage pipeline end; Described single slope drainage valve comprises connecting portion that is connected to the drainage pipeline end and the sealing that extends from connecting portion; Described sealing comprises the soft plastic body with seal, and the sealing mouth is expansible under the gravity effect of defrost water.

As further improvement of the utility model, described inlet duct comprises the by-pass line that is connected with drainage pipeline and is arranged on the breather cheek valve of by-pass line end; Described breather cheek valve comprises valve seat that is fixed on the by-pass line end and the spool that is installed in the valve seat; Described spool comprises " V " type shell fragment that is resisted against on the valve seat inlet channel inwall, and this shell fragment bends distortion under the effect of casing external and internal pressure difference.

The beneficial effects of the utility model are: it is poor that being provided with of the inlet duct on the drainage pipeline can be when door is opened be poured into extraneous air in the storeroom balance external and internal pressure, the design of the drainage arrangement on the drainage pipeline makes the drainage channel end neither store defrost water, can stop extraneous air to enter drainage pipeline again.

[Brief Description Of Drawings]

Fig. 1 is the schematic perspective view of refrigerator of the present utility model;

Fig. 2 is the schematic diagram of the drainage pipeline with inlet duct and drainage arrangement of a kind of embodiment of the present utility model;

Fig. 3 is the cutaway view of the drainage pipeline among Fig. 2.

[specific embodiment]

With reference to figure 1, the refrigerator of a kind of embodiment of the present utility model comprises casing 1, has the storeroom that is divided into refrigerating chamber and refrigerating chamber in the casing 1, and this storeroom can be sealed by door body 2.Following rear portion at casing 1 is provided with pressure equaliser 3.In the present embodiment, pressure equaliser 3 is used for the refrigerating chamber external and internal pressure of the storeroom of balance box.

With reference to figure 2 and Fig. 3, pressure equaliser 3 comprises the drainage pipeline 30 of defrost water, is arranged on the drainage arrangement and the inlet duct that is arranged near the drainage pipeline end of drainage pipeline end.In the present embodiment, the last end of drainage pipeline 30 passes in the refrigerating chamber that the adiabatic foaming layer 10 of casing extends and have the defrost of collection water opening in refrigerating chamber, and the lower end of drainage pipeline 30 extends downwardly in the water receiving water pond 5.

Drainage arrangement comprises the single slope drainage valve 31 of the lower end that is connected to drainage pipeline 30.In the present embodiment, single slope drainage valve 31 comprises connecting portion 32 that is connected to the drainage pipeline end and the sealing 32 that extends from connecting portion downwards.Sealing 32 is made by the plastic material of softness, and draws close the formation seal that is close together its terminal contraction mutually.When not having defrost water to flow through, sealing mouth sealing individual event draining valve 31 stops extraneous air to enter into refrigerating chamber by the lower end of drainage channel 30.When having defrost water to flow to the sealing mouth, the sealing mouth can open under the gravity effect of defrost water.She Ji benefit is like this: as long as there is defrost water to flow to the sealing mouth, defrost water can be discharged in the drip tray 5 at any time, can not store defrost water at sealing 32 places.

Inlet duct comprises by-pass line 34 that is connected with drainage pipeline 30 and the breather cheek valve 35 that is arranged on by-pass line 34 ends.In the present embodiment, breather cheek valve 35 comprises valve seat 36 that is fixed on the by-pass line end and the spool 37 that is installed in the valve seat 36, and wherein spool 37 comprises " V " type shell fragment 38 that is resisted against on the valve seat 35 inlet channel inwalls.When door body 2 is closed and during the refrigerating chamber internal and external pressure balance of casing 1, these shell fragment 38 these bypass passageways 34 of sealing stop extraneous air to enter into refrigerating chamber by drainage channel 30.In door body 2 opening processes, this shell fragment 38 bends distortion under casing 1 external and internal pressure difference effect, thereby opens bypass passageways 34, extraneous air is imported in the refrigerating chamber air pressure of equilibrium freezing indoor and outdoor by drainage channel 30.

Claims

1. refrigerator, it comprises the casing with inner storeroom, and be installed in the movable door body that is used to open and close this internal storage space on the casing, the defrost water that forms in should the inside storeroom is installed in this casing is exported to the outer drainage pipeline of casing, the pressure equaliser of balance box inner air and outer air pressure is set on this drainage pipeline, this pressure equaliser comprises the drainage arrangement that is arranged on the drainage pipeline end and is arranged on the inlet duct of close drainage pipeline end, it is characterized in that, this drainage arrangement does not store defrost water, and stops extraneous air to enter drainage pipeline.

2. refrigerator as claimed in claim 1 is characterized in that, described drainage arrangement comprises the single slope drainage valve that is installed in the drainage pipeline end.

3. refrigerator as claimed in claim 2 is characterized in that, described single slope drainage valve comprises connecting portion that is connected to the drainage pipeline end and the sealing that extends from connecting portion.

4. refrigerator as claimed in claim 3 is characterized in that, described sealing comprises the soft plastic body with seal, and the sealing mouth is expansible under the gravity effect of defrost water.

5. as one of above any claim described refrigerator, it is characterized in that described inlet duct comprises the by-pass line that is connected with drainage pipeline and is arranged on the breather cheek valve of by-pass line end.

6. refrigerator as claimed in claim 5 is characterized in that, described breather cheek valve comprises valve seat that is fixed on the by-pass line end and the spool that is installed in the valve seat.

7. refrigerator as claimed in claim 6 is characterized in that, described spool comprises " V " type shell fragment that is resisted against on the valve seat inlet channel inwall, and this shell fragment bends distortion under the effect of casing external and internal pressure difference.