CN115111867A

CN115111867A - Refrigerator and air extractor thereof

Info

Publication number: CN115111867A
Application number: CN202110303035.2A
Authority: CN
Inventors: 赵弇锋; 万彦斌; 王文椿; 刘宏晖; 陈建全
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2022-09-27
Anticipated expiration: 2041-03-22
Also published as: CN115111867B

Abstract

The invention provides a refrigerator and an air extractor thereof. Be provided with at least one crisper on the base, inject the installation cavity in the base, the vacuum pump sets up in the installation cavity, the import of vacuum pump links to each other with the crisper, the main part in the vacuum pump outside is located including the cover to the damping cover, and the interval is formed with many first damping ribs on the outer peripheral face of main part, the mounting sets up around the main part, the internal surface interval of mounting is formed with many second damping ribs different with first damping rib extending direction, through first damping rib and second damping rib cross contact, reduce the vibration of vacuum pump and outwards conduct. The main body part of the vibration damping sleeve is not in integral contact with the fixing piece, but the first vibration damping rib is in contact with the second vibration damping rib, and the contact area of the fixing piece and the vibration damping sleeve can be reduced in a point contact mode, so that the vibration of the vacuum pump can be greatly reduced.

Description

Refrigerator and air extractor thereof

Technical Field

The invention relates to the technical field of refrigeration and freezing, in particular to a refrigerator and an air extractor thereof.

Background

Along with the improvement of the living standard of people, the demand of consumers on the refrigerator is higher and higher, and in order to improve the preservation performance of the refrigerator, the refrigerator with the vacuumizing function appears in the prior art and is favored by the consumers. The refrigerator is realized by the principle that a certain chamber of the refrigerator is vacuumized by using a vacuum pump, but the vacuum pump usually vibrates greatly when in work, so that the noise of the refrigerator is increased.

In order to solve the above-mentioned drawbacks, a vibration damping treatment for a vacuum pump has been performed in the prior art, specifically, a vibration damping member is disposed around the vacuum pump. However, this method has certain disadvantages, and the vibration damping effect of the vibration damping member is limited, and the vibration of the vacuum pump cannot be effectively reduced.

Therefore, how to reduce the transmission of the vibration of the vacuum pump to the outside becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a refrigerator and an air exhausting apparatus thereof.

A further object of the present invention is to reduce the vibration of the vacuum pump.

It is another further object of the present invention to absorb the vibration of the vacuum pump to dampen the vibration generated by the vacuum pump and transmitted to the base.

In particular, the present invention provides an air extraction device for a refrigerator, comprising:

the base is provided with at least one preservation box, and an installation cavity is defined in the base;

the vacuum pump is arranged in the installation cavity, and an inlet of the vacuum pump is connected with the preservation box and used for pumping out part or all of gas in the preservation box;

the damping sleeve comprises a main body part sleeved outside the vacuum pump, and a plurality of first damping ribs are formed on the outer peripheral surface of the main body part at intervals; and

the mounting sets up around the main part for be fixed in the installation cavity with the vacuum pump, and the internal surface interval of mounting is formed with many second damping ribs different with first damping rib extending direction, through first damping rib and the contact of second damping rib cross, reduces the vibration of vacuum pump and outwards conducts.

Further, the main body part is cylindrical, and the plurality of first vibration reduction ribs respectively extend along the axial direction of the main body part;

the plurality of second vibration reduction ribs are arranged along the circumferential direction of the main body part respectively, and the outline formed by the protruding end parts of the plurality of second vibration reduction ribs is matched with the appearance of the main body part.

Further, the main body portion is provided at a top wall of the mounting chamber; and is

The fixing piece further comprises a first fixing piece, the first fixing piece is arranged on one side, away from the top wall of the installation cavity, of the main body part, and the vacuum pump is directly or indirectly fixed to the top wall of the installation cavity through the first fixing piece through a fastening piece.

Further, the damping sleeve still includes:

the supporting part is connected with the peripheral surface of the main body part, is positioned between the top wall of the mounting chamber and the main body part, is flat and abuts against the top wall of the mounting chamber; and is

A plurality of vibration reduction gaps are arranged between the main body part and the supporting part at intervals so as to reduce the vibration generated by the vacuum pump and transmitted to the base.

Further, the mounting still includes:

the second fixing piece is arranged between the top wall of the installation cavity and the main body part, the outer surface of the second fixing piece is abutted against the top wall of the installation cavity, and the first fixing piece and the second fixing piece clamp the vacuum pump through fasteners and are fixed on the top wall of the installation cavity.

Furthermore, the fixing piece is provided with a stopping part along the two axial ends of the main body part respectively so as to restrict the vibration damping sleeve to move along the axial direction.

Furthermore, two axial ends of the main body part are respectively provided with a limiting part so as to limit the vacuum pump to move along the axial direction of the damping sleeve.

Further, the air exhaust device further comprises:

the muffler sets up in the installation cavity, and the import of muffler links to each other with the export of vacuum pump to reduce the produced noise of vacuum pump exhaust.

Further, the damping sleeve is made of rubber or silica gel materials.

Particularly, the invention further provides a refrigerator which comprises a door body and the air extracting device, wherein the air extracting device is arranged on the inner side of the door body.

In the air extractor, the base is internally provided with the mounting cavity, the vacuum pump is arranged in the mounting cavity and is used for vacuumizing the preservation box arranged on the base, the main body part of the vibration reduction sleeve is sleeved outside the vacuum pump, a plurality of first vibration reduction ribs are formed on the outer peripheral surface of the main body part at intervals, the fixing part is arranged around the main body part, and a plurality of second vibration reduction ribs different from the first vibration reduction ribs in the extending direction are formed on the inner surface of the fixing part at intervals. Therefore, when the vacuum pump is fixed by the fixing piece, the first vibration reduction rib and the second vibration reduction rib form point contact. That is, the main part of the damping sleeve is not in contact with the fixing piece integrally, but the first damping rib is in contact with the second damping rib, and the contact area between the fixing piece and the damping sleeve can be reduced in a point contact mode, so that the vibration conduction of the vacuum pump can be greatly reduced.

Furthermore, in the air extractor of the invention, because the main body part is arranged at the top wall of the installation cavity, the first fixing part is arranged at one side of the main body part, which is far away from the top wall of the installation cavity, and the supporting part is positioned between the top wall of the installation cavity and the main body part, the fastening part can pass through the first connecting hole of the first fixing part and the second connecting hole on the supporting part to be connected with the top wall of the installation cavity, so as to indirectly fix the vacuum pump on the top wall of the installation cavity. And a plurality of vibration reduction gaps which are arranged at intervals are arranged between the main body part and the supporting part to form a base similar to an air spring type, so that the vibration of the vacuum pump is further absorbed, and the vibration generated by the vacuum pump and transmitted to the base is reduced.

Furthermore, in the air extractor of the invention, the first fixing piece is arranged on one side of the main body part, which is far away from the top wall of the installation cavity, the second fixing piece is arranged between the top wall of the installation cavity and the main body part, the outer surface of the second fixing piece is abutted against the top wall of the installation cavity, namely the inner surface of the first fixing piece is opposite to the inner surface of the second fixing piece, the first fixing piece and the second fixing piece clamp the vacuum pump and the damping sleeve, the vacuum pump and the damping sleeve can be fixedly suspended on the top wall of the installation cavity by using the fastening piece, and the vacuum pump and the preservation box can be conveniently connected on the basis of realizing damping.

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 view of a refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic view of the installation relationship between a refrigerator door and an air extractor according to an embodiment of the present invention;

FIG. 3 is a schematic view of a suction device in a refrigerator according to one embodiment of the present invention;

FIG. 4 is a bottom view of the suction device in the refrigerator according to one embodiment of the present invention, hiding the bottom cover;

FIG. 5 is an exploded view of the air extractor device according to the first embodiment of the present invention, concealing the crisper;

FIG. 6 is a schematic view of the mounting relationship of the damping sleeve and the first fixing member in the air extractor device according to the first embodiment of the invention;

FIG. 7 is a schematic view of a damping sleeve in an air extraction device according to one embodiment of the present invention;

FIG. 8 is an exploded view of the air extractor device according to the second embodiment of the present invention, concealing the crisper;

FIG. 9 is an exploded view of the air extractor device according to the third embodiment of the present invention, concealing the crisper;

figure 10 is a schematic view of a damping sleeve in an air extraction device according to a third embodiment of the present invention.

Detailed Description

In the description of the present embodiment, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", and the like indicate orientations or positional relationships that are based on the orientation in the normal use state of the refrigerator 1 as a reference, and can be determined with reference to the orientations or positional relationships shown in the drawings, for example, "front" indicating the orientation refers to the side of the refrigerator 1 toward the user. This is merely to facilitate description of the invention and to simplify the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be taken as limiting the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. When a feature "comprises or comprises" a or some of its intended features, this indicates that other features are not excluded and that other features may be further included, unless expressly stated otherwise.

Referring to fig. 1, fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention. The invention provides a refrigerator 1 which generally comprises a refrigerator body 10 and a door body 20.

The housing 10 defines therein at least one, and typically a plurality of, storage compartments, open at the front side, such as a refrigerating compartment, a freezing compartment, a temperature-changing compartment, and the like. The number and the functions of the specific storage compartments can be configured according to the preset requirements, and in some embodiments, the preservation temperature of the refrigerating compartment can be 2-9 ℃, or 4-7 ℃; the preservation temperature of the freezing chamber can be-22 to-14 ℃, or can be-20 to 16 ℃. The freezing chamber may be disposed below the refrigerating chamber, and the variable temperature chamber may be disposed between the freezing chamber and the refrigerating chamber. The temperature in the freezer compartment is typically in the range of-14 ℃ to-22 ℃. The temperature-changing chamber can be adjusted according to the requirement to store proper food or be used as a fresh-keeping storage chamber.

Referring to fig. 1, in the present embodiment, the refrigerator 1 may further include a plurality of door bodies 20, and the door bodies 20 may be disposed at the front side of the refrigerator body 10 and used for opening and closing the storage compartments. For example, the door 20 may be hinged to one side of the front portion of the body 10, and the storage compartments may be opened and closed in a pivoting manner, so that the number of the door 20 may be matched with the number of the storage compartments, and the storage compartments may be individually opened one by one. For example, a refrigerating chamber door body, a freezing chamber door body and a temperature changing chamber door body can be respectively arranged for the refrigerating chamber, the freezing chamber and the temperature changing chamber. In some alternative embodiments, the door 20 may also be in the form of a side hung door, a side sliding door, a sliding door, or the like.

The storage chamber can be provided with cold energy by a refrigerating system so as to realize the storage environment with refrigeration, freezing and temperature changing. The refrigeration system may be a refrigeration cycle system constituted by a compressor, a condenser, a throttle device, an evaporator, and the like. The evaporator is configured to provide cooling directly or indirectly to the storage compartment. For example, in a compression type direct cooling refrigerator, the evaporator can be arranged on the outer side or the inner side of the rear wall surface of the inner container of the refrigerator; in the compression type air-cooled refrigerator, an evaporator chamber is further arranged in the refrigerator body 10, the evaporator chamber is communicated with the storage compartment through an air path system, an evaporator is arranged in the evaporator chamber, and a fan is arranged at an outlet of the evaporator chamber so as to perform circulating refrigeration on the storage compartment.

Since the above-mentioned cabinet 10, door 20 and refrigeration system themselves are well known and easily implemented by those skilled in the art, the detailed description of the cabinet 10, door 20 and refrigeration system itself is omitted herein for the sake of not obscuring and obscuring the inventive points of the present application.

Referring to fig. 2, fig. 2 is a schematic view of an installation relationship between a refrigerator door and an air extractor according to an embodiment of the present invention. In some embodiments, the refrigerator 1 may further include one or more air extracting devices 30, where the air extracting device 30 is disposed inside any one of the door bodies 20, and has a vacuum-pumping function, so as to provide a sealed space for precious food materials (such as ginseng, sea cucumber, medlar, tonic materials, seasonings, etc.) stored in the air extracting device 30, and perform a vacuum-pumping process in the sealed space, so as to reduce oxidation deterioration and prevent taint of the food materials. And because air exhaust device 30 sets up the inboard at door body 20, can convenience of customers take at any time, need not to go the box 10 depths again and get and put the edible material.

Referring to fig. 3 to 7, fig. 3 is a schematic view of an air extractor in a refrigerator according to an embodiment of the present invention; FIG. 4 is a bottom view of the suction device in a refrigerator according to one embodiment of the present invention, with the bottom cover hidden; FIG. 5 is an exploded view of the air extractor device 30 according to the first embodiment of the present invention, which conceals the crisper; FIG. 6 is a schematic view of the mounting relationship of the damping sleeve to the first mount in an air extractor device according to an embodiment of the invention; FIG. 7 is a schematic view of a damping sleeve in an air extractor device according to one embodiment of the invention.

Specifically, the gas exhaust apparatus 30 may include a base 100, a vacuum pump 200, a damping sleeve 300, and a fixing member 400.

The base 100 is provided with at least one crisper 500, the base 100 defines therein a mounting chamber, the mounting chamber may have a mounting opening opened downward, and the mounting opening is provided with a bottom cover 140 for closing the mounting chamber.

The vacuum pump 200 is arranged in the installation chamber, and an inlet of the vacuum pump 200 is connected with the preservation box 500 and used for pumping out part or all of gas in the preservation box 500.

The damping sleeve 300 includes a main body 310 sleeved outside the vacuum pump 200, and a plurality of first damping ribs 312 are formed on an outer circumferential surface of the main body 310 at intervals.

The fixing member 400 is disposed around the main body 310 to fix the vacuum pump 200 to the installation chamber, and a plurality of second vibration damping ribs 402 having different extending directions from the first vibration damping ribs 312 are formed on an inner surface of the fixing member 400 at intervals, so that the first vibration damping ribs 312 and the second vibration damping ribs 402 are in cross contact with each other to reduce the outward conduction of the vibration of the vacuum pump 200.

Referring to fig. 3, the base 100 is provided with a plurality of recesses 120 for fixing the crispers 500, the crispers 500 can be correspondingly clamped in the recesses 120 one by one, and the bottoms of the recesses 120 are further provided with air inlets 130 communicated with the crispers 500.

Referring to fig. 3, the vacuum pump 200 is disposed in the installation chamber, an inlet of the vacuum pump 200 is connected to the air inlet 130 through the air inlet pipe 610, an outlet of the vacuum pump 200 is connected to the air outlet pipe 620, and when the vacuum pump 200 operates, air in the preservation box 500 is pumped out, so that a vacuum environment is formed in the preservation box 500, and the requirement of a user on vacuum preservation is met.

Since the vacuum pump 200 has large vibration during operation, which is easy to affect the structure of the refrigerator 1 and generate noise, in order to reduce the outward conduction of the vibration of the vacuum pump 200, the vibration damping sleeve 300 is further sleeved on the outer side of the vacuum pump 200 in this embodiment, and the vibration damping sleeve 300 may be made of an elastic material, such as rubber or silica gel. The fixing member 400 is disposed around the main body 310 for fixing the vacuum pump 200 in the installation chamber, that is, after the fixing member 400 fixes the vacuum pump 200, the damping sleeve 300 is located between the vacuum pump 200 and the fixing member 400, so that the damping sleeve 300 can absorb part of the vibration of the vacuum pump 200, and can reduce the transmission of the vibration generated by the vacuum pump 200 to the outside.

As described in the background section, there has been a vibration damping process for a vacuum pump in the prior art, which utilizes a vibration damping member provided around the vacuum pump. However, this method has certain disadvantages, and the vibration damping effect of the vibration damping member is limited, and the vibration conduction of the vacuum pump cannot be effectively reduced.

Referring to fig. 5 to 7, in order to more effectively suppress the transmission of the vibration of the vacuum pump 200 to the outside, a plurality of first vibration damping ribs 312 are formed at intervals on the outer circumferential surface of the main body portion 310 of the vibration damping sleeve 300 of the present embodiment, a plurality of second vibration damping ribs 402 having a direction different from the extending direction of the first vibration damping ribs 312 are formed at intervals on the inner surface of the mount 400, and after the vacuum pump 200 is fixed by the mount 400, the first vibration damping ribs 312 and the second vibration damping ribs 402 form point contact. That is, when the mount 400 fixes the vacuum pump 200, the body portion 310 of the damping sleeve 300 does not come into surface contact with the mount 400, but the first damping ribs 312 and the second damping ribs 402 come into point contact. Compared with the prior art, the point contact mode can reduce the contact area between the fixing member 400 and the damping sleeve 300, which is beneficial to greatly reducing the vibration conduction of the vacuum pump 200.

Referring to fig. 5 to 7, in some embodiments, the main body part 310 of the damping sleeve 300 is cylindrical, a space for installing the vacuum pump 200 and the motor thereof is defined inside, and an outlet of the vacuum pump 200 may protrude from one end of the main body part 310. The first vibration reduction ribs 312 may extend axially along the main body portion 310, the second vibration reduction ribs 402 may be disposed along the circumferential direction of the main body portion 310, and the protruding end portions of the second vibration reduction ribs 402 may have a contour that matches the outer shape of the main body portion 310. When the mount 400 fixes the vacuum pump 200, the second vibration reduction rib 402 and the second vibration reduction rib 402 may be in perpendicular cross contact, and since the second vibration reduction rib 402 is disposed along the circumferential direction of the main body portion 310 and the contour of the protruding end portion thereof is matched with the outer shape of the main body portion 310, the second vibration reduction rib 402 may also function to restrict the vacuum pump 200 from moving in the radial direction.

Referring to fig. 4 to 7, in some embodiments, the main body portion 310 is disposed at the top wall 110 of the mounting chamber. The fixing member 400 may further include a first fixing member 410, the first fixing member 410 is disposed on a side of the main body portion 310 facing away from the top wall 110 of the installation chamber, and the first fixing member 410 directly or indirectly fixes the vacuum pump 200 to the top wall 110 of the installation chamber through a fastening member (not shown in the figure). That is, the first fixing member 410 of the present embodiment may realize the fixed suspension of the vacuum pump 200 at the top wall 110 of the installation chamber. Since the crisper 500 is disposed on the base 100, the mounting chamber is formed inside the base 100, and thus suspending the vacuum pump 200 at the top wall 110 of the mounting chamber may facilitate the connection of the vacuum pump 200 with the crisper 500.

Referring to fig. 6, in the present embodiment, the first fixing member 410 is disposed on a side of the main body portion 310 away from the top wall 110 of the installation chamber, a plurality of first connecting portions 412 may be disposed at two ends of the main body portion, and a first connecting hole 414 is formed on each first connecting portion 412, and a fastener may pass through the first connecting hole 414 to be directly connected to the top wall 110 of the installation chamber.

Referring to FIG. 8, FIG. 8 is an exploded view of a suction device according to a second embodiment of the present invention, concealing a crisper. In other embodiments, the fixture 400 may further include a second fixture 420, the second fixture 420 may be the same as the first fixture 410, the second fixture 420 is disposed between the top wall 110 of the installation chamber and the main body 310, and an outer surface of the second fixture 420 abuts against the top wall 110 of the installation chamber, such that an inner surface of the first fixture 410 is opposite to an inner surface of the second fixture 420 to clamp the vacuum pump 200 and the damping sleeve 300 between the first fixture 410 and the second fixture 420, and the fastener may pass through the first connection hole 414 on the first fixture 410 and the second fixture 420 to be connected with the top wall 110 of the installation chamber, so as to indirectly fix the vacuum pump 200 on the top wall 110 of the installation chamber.

Referring to fig. 9 and 10, fig. 9 is an exploded view of a suction device according to a third embodiment of the present invention, which conceals the crisper; figure 10 is a schematic view of a damping sleeve in an air extraction device according to a third embodiment of the present invention.

The present invention also provides another solution in which the first fixing member 410 indirectly fixes the vacuum pump 200 to the ceiling wall 110 of the installation chamber. Specifically, the damping sleeve 300 may further include a support portion 320, the support portion 320 is connected to the outer peripheral surface of the main body portion 310, and the support portion 320 is located between the top wall 110 of the mounting chamber and the main body portion 310, is in a flat plate shape, and abuts against the top wall 110 of the mounting chamber. The support portion 320 may further include a second connection portion 322 disposed at two sides thereof opposite to the first connection portion 412, the second connection portion 322 is provided with a second connection hole 324, and a fastener may pass through the first connection hole 414 of the first fixing member 410 and the second connection hole 324 of the support portion 320 to be connected with the top wall 110 of the installation chamber, so as to indirectly fix the vacuum pump 200 on the top wall 110 of the installation chamber.

In the present embodiment, a plurality of vibration reduction gaps 330 are disposed between the main body 310 and the supporting portion 320 to reduce vibration generated by the vacuum pump 200 and transmitted to the base 100.

Specifically, the main body 310 and the support 320 are disposed opposite to each other with a certain gap therebetween, two opposite ends of the main body 310 and the support 320 may be connected by a support column 340, and a plurality of separation columns 350 may be disposed between the two support columns 340 at intervals to separate the gap between the main body 310 and the support 320 into a plurality of damping gaps 330.

Since the supporting portion 320 has a flat plate shape and abuts against the top wall 110 of the installation chamber, when the first fixing member 410 fixes the vacuum pump 200 to the top wall 110 of the installation chamber, the supporting portion 320 may form a base similar to an air spring type by using the damping gap 330, and further absorb the vibration of the vacuum pump 200.

Referring to fig. 6, in some embodiments, the fixing member 400 is provided with a stopping portion 430 at each of two ends of the main body 310 in the axial direction, so as to restrict the damping sleeve 300 from moving in the axial direction.

When the fixing member 400 includes only the first fixing member 410, the stopping portions 430 may be disposed at two ends of the first fixing member 410. As shown in fig. 5, the stopping portions 430 and the second vibration reduction ribs 402 may be arranged in parallel, and have an arc shape, an inner ring of each stopping portion 430 may be slightly higher than the second vibration reduction rib 402, a distance between the two stopping portions 430 may also be configured to be equal to an axial length of the main body portion 310, and after the vacuum pump 200 is fixed by the first fixing member 410, the two stopping portions 430 may clamp the damping sleeve 300 in the axial direction of the main body portion 310, so as to prevent the damping sleeve 300 from moving in the axial direction of the vacuum pump 200 due to vibration of the vacuum pump 200.

Similarly, when the fixing member 400 includes the first fixing member 410 and the second fixing member 420, the stopping portions 430 may be respectively disposed at two ends of the first fixing member 410 and the second fixing member 420, so that the constraining effect is better and will not be described again.

Referring to fig. 7 and 10, in some embodiments, the main body 310 has two axial ends respectively provided with a limiting portion 314 to limit the axial movement of the vacuum pump 200 along the damping sleeve 300. An opening 316 may also be provided in the stop 314 opposite the outlet or inlet end of the vacuum pump 200 to facilitate passage of the outlet or inlet of the vacuum pump 200 through the opening 316.

Referring to fig. 4, in some embodiments, the air extracting apparatus 30 may further include a silencer 600, the silencer 600 is disposed in the installation chamber, and an inlet of the silencer 600 is connected to an outlet of the vacuum pump 200 to reduce noise generated by exhausting air from the vacuum pump 200.

In this embodiment, the vacuum pump 200 is disposed in the installation chamber, an inlet of the vacuum pump 200 is connected to the air inlet 130 of the base 100 through the air inlet pipe 610, an outlet of the vacuum pump 200 is connected to the air outlet pipe 620, and the air outlet pipe 620 is connected to the silencer 600, so as to reduce noise generated by exhausting air from the vacuum pump 200.

Muffler 600 may also be preferably a reactive muffler. The reactive muffler is a muffler which reduces the sound energy radiated outwards by the muffler through the reflection and interference of the sound energy caused by the impedance change in the sound transmission process of the abrupt change position or the bypass resonant cavity of the pipeline section, so as to achieve the purpose of muffling, is relatively suitable for eliminating low and medium frequency noise, has poor muffling effect on high frequency noise, and is suitable for the use environment of the vacuum pump 200. Of course, those skilled in the art can also adopt other forms of the silencer 600 after knowing the technical solution of the present invention, such as an impedance hybrid silencer, etc., which are not listed here.

Further, the housing of the muffler 600 can be made of a material with certain elasticity, such as rubber or silicon, which not only solves the damping problem of the reactive muffler, but also greatly improves the noise when the pulsating gas flow reaches the muffler 600 and the fluid damps the chamber.

In the air extractor 30 of the present invention, since the base 100 defines an installation chamber, the vacuum pump 200 is disposed in the installation chamber for evacuating the crisper 500 disposed on the base 100, the main body 310 of the damping sleeve 300 is sleeved outside the vacuum pump 200, a plurality of first damping ribs 312 are formed at intervals on the outer circumferential surface of the main body 310, the fixing member 400 is disposed around the main body 310, and a plurality of second damping ribs 402 having a different extending direction from the first damping ribs 312 are formed at intervals on the inner surface of the fixing member 400. Therefore, when the mount 400 fixes the vacuum pump 200, the first vibration reduction rib 312 and the second vibration reduction rib 402 form point contact. That is, the main body portion 310 of the damping sleeve 300 is not in contact with the entire stator 400, but the first damping ribs 312 and the second damping ribs 402 are in contact with each other, so that the contact area between the stator 400 and the damping sleeve 300 can be reduced by the point contact method, which is advantageous in greatly reducing the vibration of the vacuum pump 200.

Further, in the gas exhaust apparatus 30 of the present invention, since the main body 310 is disposed at the top wall 110 of the installation chamber, the first fixing member 410 is disposed at a side of the main body 310 away from the top wall 110 of the installation chamber, and the supporting portion 320 is disposed between the top wall 110 of the installation chamber and the main body 310, the fastening member can pass through the first connection hole 414 of the first fixing member 410 and the second connection hole 324 of the supporting portion 320 to be connected with the top wall 110 of the installation chamber, so as to indirectly fix the vacuum pump 200 on the top wall 110 of the installation chamber. And a plurality of vibration reduction gaps 330 are arranged between the main body part 310 and the supporting part 320 at intervals to form a base similar to an air spring type, so that the vibration of the vacuum pump 200 is further absorbed, and the vibration generated by the vacuum pump 200 and transmitted to the base 100 is reduced.

Further, in the air extractor 30 of the present invention, the first fixing element 410 is disposed on a side of the main body 310 away from the top wall 110 of the installation chamber, the second fixing element 420 is disposed between the top wall 110 of the installation chamber and the main body 310, an outer surface of the second fixing element 420 abuts against the top wall 110 of the installation chamber, that is, an inner surface of the first fixing element 410 is opposite to an inner surface of the second fixing element 420, the first fixing element 410 and the second fixing element 420 clamp the vacuum pump 200 and the damping sleeve 300, and the vacuum pump 200 and the damping sleeve 300 can be fixedly suspended on the top wall 110 of the installation chamber by using a fastener, so that the vacuum pump 200 is closer to the crisper 500 on the basis of damping, and the vacuum pump 200 is conveniently connected to the crisper 500.

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.

Claims

1. An air extractor for a refrigerator, comprising:

the fresh-keeping box comprises a base, wherein at least one fresh-keeping box is arranged on the base, and an installation cavity is defined in the base;

the mounting, set up in around the main part, be used for with the vacuum pump is fixed in installation cavity, and the internal surface interval of mounting be formed with many with the different second damping rib of first damping rib extending direction, through first damping rib with second damping rib cross contact reduces the vibration of vacuum pump outwards conducts.

2. The gas evacuation device of claim 1,

the main body part is cylindrical, and the first vibration reduction ribs respectively extend along the axial direction of the main body part;

the plurality of second vibration reduction ribs are arranged along the circumferential direction of the main body part respectively, and the contour formed by the protruding end parts of the plurality of second vibration reduction ribs is matched with the shape of the main body part.

3. The gas evacuation device of claim 2,

the main body portion is disposed at a top wall of the mounting chamber; and is

The fixing piece further comprises a first fixing piece, the first fixing piece is arranged on one side, away from the top wall of the installation chamber, of the main body part, and the first fixing piece directly or indirectly fixes the vacuum pump on the top wall of the installation chamber through a fastening piece.

4. The air extraction apparatus according to claim 3 wherein the damping sleeve further comprises:

the supporting part is connected with the peripheral surface of the main body part, is positioned between the top wall of the mounting chamber and the main body part, is in a flat plate shape and is abutted against the top wall of the mounting chamber; and is

The main body part with still have the damping clearance of a plurality of intervals settings between the supporting part to slow down the vacuum pump produces and to the vibration of base transmission.

5. The suction device of claim 3, wherein the fixture further comprises:

the second fixing piece is arranged between the top wall of the installation cavity and the main body part, the outer surface of the second fixing piece is abutted against the top wall of the installation cavity, and the first fixing piece and the second fixing piece clamp the vacuum pump and fix the vacuum pump on the top wall of the installation cavity through the fastening piece.

6. The gas evacuation device of claim 2,

the fixing piece is provided with stopping parts at two axial ends of the main body part respectively so as to restrict the vibration damping sleeve to move along the axial direction.

7. The gas evacuation device of claim 2,

the two axial ends of the main body part are respectively provided with a limiting part so as to limit the vacuum pump to move along the axial direction of the damping sleeve.

8. The suction device of claim 1, further comprising:

the silencer is arranged in the installation cavity, and an inlet of the silencer is connected with an outlet of the vacuum pump so as to reduce noise generated by exhaust of the vacuum pump.

9. The gas evacuation device of claim 1,

the damping sleeve is made of rubber or silica gel materials.

10. A refrigerator, characterized by comprising:

a door body; and

an air extractor according to any of claims 1 to 9, disposed on an inner side of the door body.