阅读说明：本技术 一种冰箱 (A kind of refrigerator ) 是由 刘磊 陈忠峻 冯衬 于 2019-11-22 设计创作，主要内容包括：本发明提供了一种冰箱,包括箱体、排水管道、气压传感器、进气管以及电磁开关。排水管道设置于箱体内制冷室的下部,用于排出制冷室的水。气压传感器用于检测箱体内部的气压。进气管一端连通至排水管内,另一端连通至箱体外部。电磁开关设置于进气管上,电磁开关在箱体内部的气压小于设定阈值的情况下打开,以使进气管导通,从而导致箱体内部通过进气管与箱体外部连通,并且在不影响冰箱的外观的情况下,可以平衡冰箱内部和外部的气压,降低了用户开门的难度。(The invention provides a refrigerator which comprises a refrigerator body, a drainage pipeline, an air pressure sensor, an air inlet pipe and an electromagnetic switch. The drainage pipeline is arranged at the lower part of the refrigeration chamber in the box body and used for discharging water in the refrigeration chamber. The air pressure sensor is used for detecting the air pressure in the box body. One end of the air inlet pipe is communicated to the inside of the drain pipe, and the other end of the air inlet pipe is communicated to the outside of the box body. Electromagnetic switch sets up in the intake pipe, and electromagnetic switch opens under the inside atmospheric pressure of box is less than the condition of setting for the threshold value to make the intake pipe switch on, thereby lead to inside intake pipe and the outside intercommunication of box of passing through of box, and under the condition that does not influence the outward appearance of refrigerator, can balance the inside and outside atmospheric pressure of refrigerator, reduced the degree of difficulty that the user opened the door.)

1. A refrigerator, comprising:

a box body;

the drainage pipeline is arranged at the lower part of the refrigeration chamber in the box body and is used for draining water in the refrigeration chamber;

the air pressure sensor is used for detecting the air pressure in the box body;

one end of the air inlet pipe is communicated to the inside of the drainage pipeline, and the other end of the air inlet pipe is communicated to the outside of the box body;

and the electromagnetic switch is arranged on the air inlet pipe and is configured to be opened under the condition that the air pressure in the box body is smaller than a set threshold value, so that the air inlet pipe is conducted, and the box body is communicated with the outside of the box body through the air inlet pipe.

2. The refrigerator according to claim 1,

one end of the air inlet pipe, which is communicated with the drainage pipeline, extends into the drainage pipeline and is attached to the inner wall of the drainage pipeline to extend downwards, so that the pipe opening of the air inlet pipe is consistent with the drainage direction; and/or

The height of the other end of the air inlet pipe communicated to the outside of the box body is higher than that of one end of the air inlet pipe communicated to the inside of the drainage pipeline, and the electromagnetic switch is close to the other end of the air inlet pipe communicated to the outside of the box body.

3. The refrigerator according to claim 1,

and one end of the air inlet pipe communicated to the outside of the refrigerator is provided with an air filtering device.

4. The refrigerator according to claim 1, further comprising:

and the electric control board is in signal connection with the air pressure sensor and the electromagnetic switch respectively, and is configured to open and close the electromagnetic switch according to the air pressure in the box body.

5. The refrigerator of claim 4, further comprising:

and the operation sensing device is configured to sense the operation of the refrigerator by a user and trigger the electric control board to start after the operation is determined to be acquired.

6. The refrigerator according to claim 1, further comprising:

and the defrosting device is arranged in the refrigerating chamber and used for removing the frost in the refrigerating chamber through heating so as to discharge the generated defrosting water through the drainage pipeline.

7. The refrigerator according to claim 6,

the defrosting device is also configured to suspend heating until the air pressure inside the box body is recovered to be larger than or equal to the set threshold value if the air pressure inside the box body is smaller than the set threshold value after heating is started.

8. The refrigerator according to any one of claims 1 to 7, further comprising:

the water receiving box is arranged at the lower end of the drainage pipeline and is used for receiving water drained by the drainage pipeline;

the valve is arranged on the drainage pipeline and positioned below one end, communicated with the drainage pipeline, of the air inlet pipe, and the valve is configured to be closed when the air pressure inside the box body is smaller than the set threshold value.

9. The refrigerator according to claim 8,

the valve comprises at least one metal suction point;

the refrigerator also comprises electromagnetic relays, wherein the number of the electromagnetic relays is the same as that of the metal attraction points, and the electromagnetic relays are configured to open and close the valve through the metal attraction points according to the air pressure in the refrigerator body.

10. The refrigerator of claim 9, wherein the valve comprises:

the center of the sealing cover is provided with a through notch, and the metal suction point is arranged on the sealing cover;

the hinge shaft is internally provided with a spring return device, divides the sealing cover into two symmetrical parts and is in adaptive connection with the two parts of the sealing cover;

and the rubber pad is in adaptive connection with the hinge shaft and is positioned on the sealing cover so as to cover the notch of the sealing cover.

Technical Field

The invention relates to the technical field of household appliances, in particular to a refrigerator.

Background

After the refrigerator is opened, cold air in the refrigerator overflows, and hot air outside the refrigerator enters the refrigerator. Due to the principle of expansion with heat and contraction with cold, the volume of hot air is reduced along with the reduction of temperature after the hot air enters the refrigerator, the air pressure inside the refrigerator is lower than the external atmospheric pressure, and the difficulty of opening the door of a user is increased. In view of the above problems, a conventional solution is to provide a power-assisted handle outside the refrigerator to increase the external door opening force, but the handle structure is prone to safety problems of hands being caught and affecting the appearance of the refrigerator.

Disclosure of Invention

The invention aims to provide a refrigerator, which enables a door body of the refrigerator to be easily opened and improves user experience by automatically balancing air pressure inside and outside the refrigerator.

A further object of the present invention is to improve the cleanliness of gas introduced into the interior of a refrigerator during the process of balancing the pressure of the interior and exterior of the refrigerator, thereby making the interior of the refrigerator more sanitary.

In particular, the present invention provides a refrigerator comprising:

a box body;

the drainage pipeline is arranged at the lower part of the refrigeration chamber in the box body and is used for draining water in the refrigeration chamber;

the air pressure sensor is used for detecting the air pressure in the box body;

one end of the air inlet pipe is communicated to the inside of the drainage pipeline, and the other end of the air inlet pipe is communicated to the outside of the box body;

and the electromagnetic switch is arranged on the air inlet pipe and is configured to be opened under the condition that the air pressure in the box body is smaller than a set threshold value, so that the air inlet pipe is conducted, and the box body is communicated with the outside of the box body through the air inlet pipe.

Optionally, one end of the air inlet pipe, which is communicated with the drainage pipeline, extends into the drainage pipeline and is attached to the inner wall of the drainage pipeline to extend downwards, so that the pipe opening of the air inlet pipe is consistent with the drainage direction; and/or

The height of the other end of the air inlet pipe communicated to the outside of the box body is higher than that of one end of the air inlet pipe communicated to the inside of the drainage pipeline, and the electromagnetic switch is close to the other end of the air inlet pipe communicated to the outside of the box body.

Optionally, an air filtering device is arranged at one end of the air inlet pipe communicated to the outside of the refrigerator.

Optionally, the refrigerator further includes:

an electric control board which is respectively connected with the air pressure sensor and the electromagnetic switch by signals and is configured to open and close the electromagnetic switch according to the air pressure in the box body

Optionally, the refrigerator further includes:

and the operation sensing device is configured to sense the operation of the refrigerator by a user and trigger the electric control board to start after the operation is determined to be acquired.

Optionally, the refrigerator further includes:

and the defrosting device is arranged in the refrigerating chamber and used for removing the frost in the refrigerating chamber through heating so as to discharge the generated defrosting water through the drainage pipeline.

Optionally, the defrosting device is further configured to, after heating is started, suspend heating until the air pressure inside the tank recovers to be greater than or equal to the set threshold if the air pressure inside the tank is smaller than the set threshold.

Optionally, the refrigerator further includes:

the water receiving box is arranged at the lower end of the drainage pipeline and is used for receiving water drained by the drainage pipeline;

the valve is arranged on the drainage pipeline and positioned below one end, communicated with the drainage pipeline, of the air inlet pipe, and the valve is configured to be closed when the air pressure inside the box body is smaller than the set threshold value.

Optionally, the valve comprises at least one metal pull-in point;

the refrigerator also comprises electromagnetic relays, wherein the number of the electromagnetic relays is the same as that of the metal attraction points, and the electromagnetic relays are configured to open and close the valve through the metal attraction points according to the air pressure in the refrigerator body.

Optionally, the valve comprises:

the center of the sealing cover is provided with a through notch, and the metal suction point is arranged on the sealing cover;

the hinge shaft is internally provided with a spring return device, divides the sealing cover into two symmetrical parts and is in adaptive connection with the two parts of the sealing cover;

and the rubber pad is in adaptive connection with the hinge shaft and is positioned on the sealing cover so as to cover the notch of the sealing cover.

The electromagnetic switch of the refrigerator is opened under the condition that the air pressure in the refrigerator body is smaller than the set threshold value, so that the air inlet pipe is conducted, the interior of the refrigerator body is communicated with the exterior of the refrigerator body through the air inlet pipe, the air pressure in the interior and the exterior of the refrigerator can be balanced, the difficulty of opening the door by a user is reduced, and the appearance of the refrigerator is not influenced.

Furthermore, the other end of the air inlet pipe communicated to the outside of the refrigerator is provided with the air filtering device, so that outside air enters the refrigerator after being filtered by the air filtering device, the cleanliness of air entering the refrigerator is improved, and the interior of the refrigerator is cleaner and more sanitary.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a refrigerator having an air pressure balancing function according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a drain and intake duct part of the refrigerator having an air pressure balancing function shown in FIG. 1;

fig. 3 is a schematic view of an operation sensing device of a refrigerator having an air pressure balancing function according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a valve part of the refrigerator having an air pressure balancing function shown in fig. 1.

Detailed Description

Fig. 1 is a schematic configuration view of a refrigerator having an air pressure balancing function according to one embodiment of the present invention. The refrigerator may generally include a cabinet 1, a drain duct 2, an air pressure sensor 5, an intake duct 3, and an electromagnetic switch 4. The water discharge pipe 2 is disposed at the lower part of the refrigerating chamber in the cabinet 1, and discharges water of the refrigerating chamber. The air pressure sensor 5 detects air pressure inside the case 1. One end of the air inlet pipe 3 is communicated to the inside of the drainage pipeline 2, and the other end is communicated to the outside of the box body 1. Electromagnetic switch 4 sets up on intake pipe 3, and electromagnetic switch 4 opens under the condition that the atmospheric pressure of box 1 inside is less than the settlement threshold value to make intake pipe 3 switch on, thereby lead to box 1 inside to communicate with box 1 outside through intake pipe 3.

In this embodiment, the electromagnetic switch 4 is opened when the air pressure inside the refrigerator body 1 is smaller than the set threshold, so that the air pressure inside and outside the refrigerator can be balanced, the difficulty of opening the door by a user is reduced without affecting the appearance of the refrigerator, and the user experience is improved.

Referring to fig. 1 and 2, in an embodiment of the present invention, one end of the air inlet pipe 3, which is communicated with the drainage pipeline 2, extends into the drainage pipeline 2 and abuts against the inner wall of the drainage pipeline 2 to extend downward, so that the pipe opening of the air inlet pipe is consistent with the drainage direction, water in the drainage pipeline 2 can be prevented from entering the air inlet pipe 3 along the pipe opening of the air inlet pipe 3, corrosion of water to the electromagnetic switch 4 is reduced, the service life of the electromagnetic switch 4 is prolonged, and the cost of the refrigerator is saved. Of course, in this embodiment, it is also possible to make the height of the other end of the air intake pipe 3 communicated to the outside of the box body 1 higher than the height of the one end of the air intake pipe 3 communicated to the inside of the water discharge pipe 2, and to make the position of the electromagnetic switch 4 close to the other end of the air intake pipe 3 communicated to the outside of the box body 1, thereby further preventing the water from corroding the electromagnetic switch 4.

In one embodiment of the present invention, the other end of the intake duct 3 communicating to the outside of the refrigerator is provided with an air filtering device 7. In this embodiment, the outside air is filtered by the air filter 7 and then enters the refrigerator, which improves the cleanliness of the air entering the refrigerator, thereby making the interior of the refrigerator cleaner and more sanitary, and also prevents impurities in the air from remaining in the air inlet pipe 3 and adhering to the electromagnetic switch 4, which could block the air inlet pipe 3 and affect the performance of the electromagnetic switch 4.

In an embodiment of the present invention, the refrigerator further includes an electric control board 6, the electric control board 6 is in signal connection with the air pressure sensor 5 and the electromagnetic switch 4, respectively, and the electric control board 6 opens and closes the electromagnetic switch 4 according to the air pressure inside the refrigerator body 1.

In this embodiment, the air pressure sensor 5 transmits the detected air pressure value inside the refrigerator to the electronic control board 6, the electronic control board 6 compares the received air pressure value with a preset threshold value, when the internal air pressure value is smaller than the preset threshold value, the electronic control board 6 turns on the electromagnetic switch 4, when the internal air pressure value is equal to the set threshold value, the electronic control board 6 turns off the electromagnetic switch 4, and the set threshold value may be equal to the external air pressure value. Certainly, under the condition that the door opening experience of the user is not influenced, the set threshold value can also be smaller than the external air pressure value, so that the opening times of the electromagnetic switch 4 can be reduced, the service life of the electromagnetic switch 4 is prolonged, and the electric energy is saved. The size of the set threshold may be set by a person skilled in the art according to a user usage situation, and this is not specifically limited in the embodiment of the present invention.

Of course, in the process of installing the refrigerator, the electromagnetic switch 4 may be turned on to make the air pressure inside the refrigerator body 1 equal to the air pressure outside, the air pressure sensor 5 detects the air pressure inside the refrigerator body 1 to obtain the air pressure value outside, and the air pressure value is used as a set threshold value to adapt to different external air pressures in different environments.

Referring to fig. 3, in one embodiment of the present invention, the refrigerator further includes an operation sensing device 17, and the operation sensing device 17 senses an operation of the refrigerator by a user and triggers the electric control board 6 to start after determining that the operation is acquired.

In this embodiment, the operation sensing device 17 may be a touch sensing device, and when the touch operation of the user is sensed, the operation sensing device 17 may trigger the electronic control board 6 to start. The operation sensing device 17 may be disposed on the refrigerator door 16, preferably on a side of the refrigerator door 16 that is easily touched by a user when the user opens the refrigerator door 16, which is convenient for the user to trigger the operation sensing device 17 and does not affect the appearance of the refrigerator.

Of course, the operation sensing device 17 may also be an infrared human body sensing device, and as the user approaches the refrigerator, when the infrared human body sensing device senses the user, the electronic control board 6 is triggered to start. Thus, before the user opens the refrigerator door 16, the air pressure inside the refrigerator body 1 is balanced, and the use experience of the user is further improved.

Referring to fig. 1, in one embodiment of the present invention, the refrigerator further includes a defrosting device 18, and the defrosting device 18 is disposed in the refrigerating chamber and is used for defrosting the ice in the refrigerating chamber by heating, so that the generated defrosting water is discharged through the water discharge pipe 2. The defrosting device 18 can reduce the power consumption of the refrigerator by defrosting.

In an embodiment of the present invention, after the heating is started, if the air pressure inside the box 1 is smaller than the set threshold, the heating is suspended until the air pressure inside the box 1 is recovered to be greater than or equal to the set threshold. During the air pressure balancing process inside the refrigerator, the defrosting device 18 stops heating, and water in the drain pipe 2 can be reduced.

In the embodiment, the defrosting device 18 is in signal connection with the air pressure sensor 5, the defrosting device 18 receives the air pressure value detected by the air pressure sensor 5, compares the received air pressure value with the set threshold value of the defrosting device 18, and suspends or starts the defrosting cycle according to the comparison result. The set threshold of the defrosting device 18 and the set threshold for controlling the on and off of the electromagnetic switch may be the same threshold.

In one embodiment of the invention, the refrigerator further comprises a water receiving box 9 and a valve 8. The water receiving box 9 is arranged at the lower end of the drainage pipeline 2 to receive water drained by the drainage pipeline 2. The valve 8 is arranged on the drainage pipeline 2 and is positioned below one end of the air inlet pipe 3 communicated with the drainage pipeline 2, and the valve 8 is closed under the condition that the air pressure in the box body 1 is smaller than a set threshold value.

In this embodiment, when the air pressure inside the box body 1 is smaller than the set threshold, the valve 8 is controlled by the electric control board 6 to close, so that the water in the water receiving box 9 can be prevented from flowing backwards. In addition, the heating of the defrosting device 18 is suspended, so that the generated defrosting water can be reduced, the valve 8 can be prevented from being opened under the action of the gravity of the water drained from the drainage pipeline 2, and the water in the water receiving box 9 is further prevented from flowing backwards along the drainage pipeline 2.

Referring to fig. 4, in one embodiment of the present invention, the valve 8 includes at least one metal pull-in point 13. The refrigerator also comprises electromagnetic relays 14, the number of the electromagnetic relays 14 is the same as that of the metal attraction points 13, and the electromagnetic relays 14 open and close the valve through the metal attraction points 13 according to the air pressure in the refrigerator body.

In this embodiment, the electromagnetic relay 14 is connected to the electronic control board 6 by a connecting line 15, and the valve 8 is in a normally closed state. If the refrigerator is in a non-defrosting period (namely the defrosting device 18 is not started to heat), the valve 8 is closed, the box body 1 is in a closed state, if the air pressure value of the box body 1 detected by the air pressure sensor 5 is smaller than a set threshold value at the moment, the electric control board 6 controls the electromagnetic switch 4 to be opened, air enters the drainage pipeline 2 from the air inlet pipe 3, the effect of balancing the air pressure inside and outside the box body 1 is achieved, and in the process of balancing the air pressure inside and outside the box body 1 in the non-defrosting period, the electromagnetic relay 14 does not attract the metal attraction point 13, so that electric energy is.

If the refrigerator is in a defrosting period (namely the defrosting device 18 is started to heat), the metal attraction point 13 is not attracted by the electromagnetic relay 14, the valve 8 is opened under the action of gravity of water, when the air pressure sensor 5 detects that the air pressure of the refrigerator body 1 is lower than a set threshold value, the electromagnetic relay 14 receives the control of the electric control board 6 and attracts the metal attraction point 13, the valve 8 is closed after receiving an upward acting force, the valve 8 is prevented from being opened in the air pressure balancing process of the refrigerator, and the water of the water receiving box 9 is prevented from flowing backwards. And the defrosting device 18 stops heating, the defrosting period stops, and the electric control board 6 controls the electromagnetic switch 4 to be turned on. When the air pressure is balanced, the defrosting device 18 continues to heat, the refrigerator recovers the defrosting period, the electromagnetic relay 14 stops attracting the metal attraction point 13, and the valve 8 can be opened under the action of the gravity of the water. The suspension of the defrosting period can reduce the generated defrosting water, so that the water in the drainage pipeline 2 is reduced, the gravity of the water borne by the valve 8 is reduced, the valve 8 can be prevented from being opened in the air pressure balance process of the refrigerator, and the water in the water receiving box 9 is prevented from flowing backwards along the drainage pipeline 2.

With continued reference to fig. 4, in one embodiment of the present invention, the valve 8 includes a sealing cap 10, a hinge shaft 12, and a rubber gasket 11. The center of the sealing cover 10 is provided with a through gap, and a metal suction point 13 is arranged on the sealing cover 10. The hinge shaft 12 is provided with a spring return device, and the hinge shaft 12 divides the sealing cover 10 into two parts which are symmetrical to each other and are connected with the two parts of the sealing cover 10 in a matching way. The rubber pad 11 is connected with the hinge shaft 12 in a fitting manner, is positioned on the sealing cover 10 and covers the gap of the sealing cover 10.

In this embodiment, if a part of the sealing cover 10 has water thereon, the part of the sealing cover 10 will be opened after receiving the gravity of the water, so as to increase the draining speed of the sealing cover 10. The spring return device arranged in the hinge shaft 12 can return the drained sealing cover 10, and the metal attraction point 13 on the sealing cover 10 is attracted upwards by the electromagnetic relay 14, so that the tightness of the sealing cover 10 and the rubber pad 11 can be improved, and water is prevented from flowing backwards along the drainage pipeline 2.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.