CN212179335U - Refrigerator with a door - Google Patents

Refrigerator with a door Download PDF

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Publication number
CN212179335U
CN212179335U CN202020770790.2U CN202020770790U CN212179335U CN 212179335 U CN212179335 U CN 212179335U CN 202020770790 U CN202020770790 U CN 202020770790U CN 212179335 U CN212179335 U CN 212179335U
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CN
China
Prior art keywords
pipe
vacuum pump
low
refrigerator
exhaust pipe
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Active
Application number
CN202020770790.2U
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Chinese (zh)
Inventor
张秋菊
潘毅广
许锦潮
张树栋
申乃雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Shandong Refrigerator Co Ltd
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Hisense Shandong Refrigerator Co Ltd
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Application filed by Hisense Shandong Refrigerator Co Ltd filed Critical Hisense Shandong Refrigerator Co Ltd
Priority to CN202020770790.2U priority Critical patent/CN212179335U/en
Priority to PCT/CN2020/129903 priority patent/WO2021227420A1/en
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Publication of CN212179335U publication Critical patent/CN212179335U/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The utility model provides a refrigerator, which comprises a low-temperature storage chamber surrounded by an inner container, a low-pressure storage unit positioned in the low-temperature storage chamber and a vacuum pump; the vacuum pump is communicated with the low-pressure storage unit and is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit; the exhaust pipe is connected with a second pipeline, the second pipeline comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated, and the first pipe section is connected with the exhaust pipe; lengths of the first, second and third tube segmentsAre sequentially marked as L1、L2、L3The pipe diameter is marked as D1、D2、D3(ii) a Wherein L is1＜L2，L1＜L3；D1＜D2，D3＜D2(ii) a The utility model discloses in length and the pipe diameter through first pipeline section, second pipeline section and third pipeline section set up the pipeline cross-section that makes the air current flow through and enlarge suddenly earlier, and then shrink suddenly again makes the sound wave propagation direction change, takes place phenomenons such as reflection, interference in the second pipeline to reach the purpose of noise elimination.

Description

Refrigerator with a door
Technical Field
The utility model belongs to the technical field of the refrigerator, especially, relate to a refrigerator.
Background
With the pursuit of people for higher quality of life, more and more people pay attention to health preservation and pay attention to the health and nutrition of diet. Good fresh-keeping, quick refrigeration and other factors, so that the refrigerator becomes an indispensable member of each family.
However, the industry generally faces a root cause problem in the field of refrigerator preservation, and even in a low-temperature environment, part of enzymes in food materials still keep high activity, so that oxidative decay of the food materials is accelerated, and nutritional ingredients are lost. Aiming at the problem of nutrition maintenance which needs to be solved urgently in the industry, a vacuum preservation technology is introduced in the industry.
In order to better store the food, it has been developed to provide a vacuum chamber in the refrigerator, and the vacuum chamber is vacuumized by a vacuuming device. The main function of the vacuum is to remove oxygen from the vacuum chamber to prevent food from deteriorating. When the vacuumizing device works, vibration noise is generated and transmitted to the refrigerator body, the overall performance of the refrigerator is influenced, and the use experience of a user is seriously influenced.
In view of this, the present invention is proposed.
Disclosure of Invention
The utility model provides a to foretell technical problem, provide a refrigerator.
In order to achieve the above object, the utility model discloses a technical scheme be:
a refrigerator, comprising:
the low-temperature storage compartment is surrounded by the inner container;
the low-pressure storage unit is positioned in the low-temperature storage room and can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to be beneficial to the fresh keeping of food;
the vacuum pump is communicated with the low-pressure storage unit and is used for pumping out air in the low-pressure storage unit; the low-pressure storage unit is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit;
a second pipeline communicated with the exhaust pipe; the second pipeline comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated, and the first pipe section is connected with the exhaust pipe;
the lengths of the first pipe section, the second pipe section and the third pipe section are sequentially marked as L1、L2、L3The pipe diameter is marked as D1、D2、D3(ii) a Wherein L is1＜L2，L1＜L3；D1＜D2，D3＜D2。
Preferably, L2：L1∈[7，12]，L3：L1∈[7，14]；D1＝D3，D2：D1∈[1.5，5]。
Preferably, the outer side of the vacuum pump is sleeved with an elastic body, and the elastic body comprises:
the main body part is provided with a mounting cavity for accommodating the vacuum pump;
and the bulge is arranged around the periphery of the main body part.
Preferably, the exhaust pipe and the exhaust pipe are arranged at one end of the vacuum pump, and a positioning block is arranged at the other end of the vacuum pump; and one end of the mounting cavity is provided with a through hole for the exhaust pipe and the exhaust pipe to penetrate out, the other end of the mounting cavity is provided with an end cover matched with the end part of the vacuum pump, and the end cover is provided with a positioning hole matched with the positioning block.
Preferably, the protrusions include a first protrusion, a second protrusion and a third protrusion which are sequentially arranged along a central axis direction of the main body part and have the same size; wherein the third protrusion is located at an end of the main body portion near the through hole;
a plurality of fourth bulges are arranged in the area between the first bulge and the second bulge and the area between the second bulge and the third bulge; and the outer diameter of the fourth protrusion is smaller than the outer diameter of the first protrusion.
Preferably, a limiting notch is arranged on the third bulge;
a pump shell is sleeved on the outer side of the elastic body and fixedly connected to the inner container; the pump shell is characterized in that a raised line is arranged on the inner wall of the pump shell and is installed in the limiting notch.
Preferably, the pump shell is provided with a connecting plate fixed with the inner container, and a vibration damping part is arranged between the connecting plate and the inner container.
Preferably, the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;
the vibration damping piece comprises a fixed column arranged in an installation notch on the pump shell and fixed cushions arranged at two end parts of the fixed column; and an installation groove for accommodating the pump shell upper connecting plate is formed between the fixing cushions arranged at the two end parts of the fixing column.
Preferably, an accommodating cavity which is recessed backwards is formed on the inner container; the accommodating cavity accommodates at least part of the pump shell, and a separation space is formed between the cavity wall of the accommodating cavity and the pump shell.
Preferably, a drain pipe is arranged on the refrigerator;
the second pipeline is communicated with the exhaust pipe and the drain pipe;
when the vacuum pump works, air in the low-pressure storage unit is conveyed to the drain pipe through the air suction pipe, the vacuum pump, the exhaust pipe and the second pipeline in sequence, and finally is discharged out of the refrigerator through the drain pipe.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model provides a refrigerator, which comprises a low-temperature storage chamber surrounded by an inner container, a low-pressure storage unit positioned in the low-temperature storage chamber and a vacuum pump; the vacuum pump is communicated with the low-pressure storage unit, whichThe air exhaust pipe is communicated with the low-pressure storage unit; the exhaust pipe is connected with a second pipeline, the second pipeline comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated, and the first pipe section is connected with the exhaust pipe; the lengths of the first pipe section, the second pipe section and the third pipe section are sequentially marked as L1、L2、L3The pipe diameter is marked as D1、D2、D3(ii) a Wherein L is1＜L2，L1＜L3；D1＜D2，D3＜D2(ii) a The utility model discloses in length and the pipe diameter through first pipeline section, second pipeline section and third pipeline section set up the pipeline cross-section that makes the air current flow through and enlarge suddenly earlier, and then shrink suddenly again makes the sound wave propagation direction change, takes place phenomenons such as reflection, interference in the second pipeline to reach the purpose of noise elimination.
Drawings
Fig. 1 is a schematic view of the overall structure of the refrigerator of the present invention;
FIG. 2 is a schematic view of a portion of the refrigerator of the present invention;
FIG. 3 is a schematic diagram of the relative position structure of the drain pipe and the inner container of the refrigerator of the present invention;
FIG. 4 is a schematic diagram of the relative positions of the vacuum pump assembly, the low pressure storage unit and the drain pipe of the refrigerator according to the present invention;
FIG. 5 is a schematic view of the refrigerator with the vacuum pump assembly, the low pressure storage unit and the drain pipe at another angle;
FIG. 6 is a schematic connection diagram of a second pipeline of the vacuum pump assembly of the refrigerator of the present invention;
FIG. 7 is a schematic view of the structure of the vacuum pump assembly and the vibration damping member of the refrigerator according to the present invention;
FIG. 8 is a cross-sectional view of FIG. 7;
fig. 9 is a sectional view of a vacuum pump assembly of the refrigerator of the present invention;
fig. 10 is a first schematic structural diagram of an elastic body of the refrigerator of the present invention;
fig. 11 is a second schematic structural view of the elastic body of the refrigerator of the present invention;
fig. 12 is a sectional view of an elastic body of the refrigerator of the present invention;
fig. 13 is an exploded schematic view of the pump case of the refrigerator of the present invention.
In the above figures:
a refrigerator 1; a box body 2; a housing 2 a; an inner container 2 b; a refrigerating chamber 10; a freshness retaining container 11; a low-pressure storage unit 12; a housing 4; a door body 5; a drain pipe 13; a vacuum pump 3; a positioning block 3 a; a first pipe 14; a check valve 18; a second pipe 15; a first tube segment 15 a; a second tube section 15 b; a third tube section 15 c; a suction pipe 16; an exhaust pipe 17; a pump housing 6; a connecting plate 61; the mounting notches 61 a; a first housing 6 b; a second housing 6 a; a rib 62; an elastic body 7; a vibration damping member 8; the fixing pad 81 a; a fixing through hole 81 c; a mounting groove 82; a main body portion 74; mounting cavity 74 a; a perforation 75; an end cap 76; the positioning holes 76 a; a projection 77; the first projection 77 a; the second projection 77 b; the third projection 77 c; the fourth projection 77 d; a retention notch 70.
Detailed Description
The present invention is further described below in conjunction with specific embodiments so that those skilled in the art may better understand the present invention and can implement the present invention, but the scope of the present invention is not limited to the scope described in the detailed description. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-13, a refrigerator 1, the refrigerator 1 includes a heat-insulating box 2, the box 2 includes a casing 2a, an inner container 2b and a heat-insulating layer (not shown) therebetween. The cabinet 2 defines a plurality of insulated low-temperature storage compartments to store food and the like. In the present embodiment, these low-temperature storage compartments are a refrigerating compartment 10 located at the upper portion and a freezing compartment located at the bottom portion, respectively. The low-temperature storage compartments may be closed by respective corresponding door. The utility model discloses well freezer 10 sets up cold-stored door that runs from opposite directions, and the freezer sets up the freezing door that runs from opposite directions.
It should be understood that the present invention should not be limited to the specific distribution of the storage compartments of the refrigerator 1, but that the present invention can also be applied to other forms of refrigerators 1, such as a refrigerator 1 with a drawer-type door, etc.
The refrigerator 1 has an evaporative refrigeration system forming a closed loop. The refrigeration system includes at least a compressor (not shown), a condenser (not shown), a throttle device (not shown), and an evaporator (not shown). Since such a refrigeration system is well known in the art, further description thereof is omitted. Of course, other types of refrigeration systems (e.g., absorption refrigeration systems, thermoelectric refrigeration systems) may be used with the refrigerator 1.
The refrigerator 1 is provided with a low pressure storage unit 12 which can be maintained in a low pressure state and a vacuum pump assembly for pumping gas from the inside of the low pressure storage unit 12. The vacuum pump assembly may include a vacuum pump 3 and a pipe connected between the vacuum pump 3 and the low pressure storage unit 12.
In the present embodiment, the low pressure storage unit 12 is provided inside the refrigerating compartment 10. It should be understood that in other embodiments, the low pressure storage unit 12 may be disposed in other low temperature storage compartments, such as a temperature-changing compartment having a temperature range that is switchable between a refrigerated temperature zone and a frozen temperature zone.
The low pressure storage unit 12 is located at the bottom of the refrigerating compartment 10 and supported on the bottom wall of the refrigerating compartment 10. A fresh-keeping container 11 with high humidity and suitable for keeping foods such as vegetables and the like can be arranged at the adjacent position of the low-pressure storage unit 12; the low pressure storage unit 12 is provided at the bottom of the refrigerating compartment 10 in parallel with the fresh food container 11.
The low pressure storage unit 12 may be assembled in the cabinet 2 after being constructed independently of the cabinet 2. Referring to fig. 2, in the present embodiment, the low pressure storage unit 12 has a substantially flat rectangular parallelepiped shape, and the sum of the width of the low pressure storage unit 12 and the width of the fresh food container 11 is slightly smaller than the width of the refrigerating compartment 10, so that the bottom space of the refrigerating compartment 10 is effectively allocated, and both the fresh food container 11 and the low pressure storage unit 12 can be inserted into the refrigerating compartment 10 or pulled out of the refrigerating compartment 10.
The low pressure storage unit 12 includes a case 4 fixed in the refrigerating chamber 10 and a door 5 connected to the case 4 and movable into and out of the refrigerating chamber 10.
Referring to fig. 2, the housing 4 has a box-shaped structure defining a flat low-pressure storage compartment having a food access opening. In this embodiment, the access opening is located at the front end of the housing 4 facing the user. The latticed reinforcing ribs are arranged on the outer side of the box wall of the shell 4 to increase the strength of the box wall of the shell 4 and avoid deformation of the shell 4 caused by the difference between the internal pressure and the external pressure after vacuumizing.
Door 5 may be provided with an annular sealing member to form an airtight joint between housing 4 and door 5 when door 5 is in the closed position, preventing gas from entering the low-pressure storage chamber from the joint between housing 4 and door 5. The sealing element may also be arranged at the front end of the housing 4.
When the low pressure storage chamber is closed by the door 5 and the vacuum pump assembly is started, the gas in the low pressure storage chamber is extracted and the low pressure storage chamber is in a low pressure state. According to a preferred embodiment of the present invention, at the end of the evacuation sequence, the pressure in the low pressure storage chamber is between one standard atmosphere and absolute vacuum. The skilled person also colloquially refers to the "vacuum chamber" as the pressure in the low pressure storage chamber is lower than the standard atmospheric pressure.
The door body 5 is a drawer type door, and the door body 5 may be pushed toward the case 4 to close the access port of the low pressure storage chamber or pulled out to open the low pressure storage chamber. The rear side of the door body 5 is connected with a tray-shaped article container for placing articles. The user obtains items located in the low pressure storage unit 12 or stores items in the low pressure storage unit 12 by pushing or pulling the storage container into or out of the low pressure storage compartment. The door 5 and the storage container together constitute a drawer unit that can be pushed into and pulled out of the housing 4.
As shown in fig. 3 to 5, the refrigerator 1 has a drain pipe 13 for draining condensed water inside the refrigerator 1. One end of the vacuum pump assembly is communicated with the low pressure storage unit 12, and the other end is communicated with a drain pipe 13 of the refrigerator 1. The vacuum pump assembly operates to pump out the air in the low pressure storage unit 12 and transfer it to the drain pipe 13, and finally, it is discharged out of the refrigerator 1 through the drain pipe 13. So as to avoid the air pumped out from the low-pressure storage unit 12 directly discharging into the refrigerator 1 to make the foods in other areas in the refrigerating chamber 10 taint with each other and affect the fresh-keeping effect of the foods.
The vacuum pump assembly includes a vacuum pump 3, a first pipe 14 connecting the vacuum pump 3 and the low pressure storage unit 12, and a second pipe 15 connecting the vacuum pump 3 and the drain pipe 13.
The vacuum pump assembly is provided on the inner container 2b of the refrigerating chamber 10 near the bottom of the low pressure storage unit 12. The upper part of the rear wall of the inner container 2b of the refrigerating chamber 10 is recessed backwards to form an accommodating cavity for accommodating a vacuum pump assembly; the area of the inner container 2b close to the containing cavity is provided with a mounting hole for fixing the vacuum pump assembly. In this embodiment, the vacuum pump assembly is located the holding chamber, and is formed with the separation space between the chamber wall in holding chamber to reduce vacuum pump assembly and inner bag 2 b's direct contact, reduce the transmission of vibration, effectively fall the noise.
As shown in fig. 6-13, the vacuum pump assembly includes a vacuum pump 3, a pump housing 6, and an elastic body 7 sleeved between the vacuum pump 3 and the pump housing 6. The vacuum pump 3 is provided with an air suction pipe 16 communicated with the first pipeline 14 and an exhaust pipe 17 communicated with the second pipeline 15. The exhaust pipe 16 is arranged in parallel with the exhaust pipe 17 and is located at the same end of the vacuum pump 3. In this embodiment, the first pipeline 14 is provided with a check valve 18, and the check valve 18 is opened when the vacuum pump 3 performs pumping and closed after the pumping of the vacuum pump 3 is completed, so as to effectively prevent the gas from flowing back into the low-pressure storage unit 12 through the vacuum pump 3, thereby improving the pumping effect and prolonging the pressure maintaining time of the low-pressure storage unit 12.
In this embodiment, as shown in fig. 6, the second pipeline 15 includes a first pipe section 15a, a second pipe section 15b and a third pipe section 15c which are sequentially communicated; the first section 15a is connected to the exhaust line 17 of the vacuum pump 3, and the third section 15c is connected to the drain line 13. The lengths of the first, second and third pipe sections 15a, 15b, 15c are denoted L in this order1、L2、L3The pipe diameter of each pipe section is marked as D1、D2、D3(ii) a Wherein L is1＜L2，L1＜L3；D1＜D2，D3＜D2. In this example, L2：L1∈[7，12]，L3：L1∈[7，14]； D1＝D3，D2：D1∈[1.5，5]. The lengths and the pipe diameters of the first pipe section 15a, the second pipe section 15b and the third pipe section 15c enable the section of a pipeline through which airflow flows to be suddenly enlarged and then suddenly contracted, so that the sound wave propagation direction is changed, and phenomena such as reflection, interference and the like are generated in the second pipeline 15, and the purpose of noise elimination is achieved.
When the vacuum pump works, the air in the low-pressure storage unit 12 is sequentially conveyed to the drain pipe 13 through the first pipeline 14, the one-way valve 18 arranged on the first pipeline 14, the air suction pipe 16, the vacuum pump 3, the exhaust pipe 17 and the second pipeline 15, and finally is discharged out of the box body 2 through the drain pipe 13. In this embodiment, the outer side of the vacuum pump 3 is sleeved with the elastic body 7, and the elastic body 7 can absorb the vibration on the vacuum pump 3 so as to reduce the noise generated when the vacuum pump 3 works; in addition, set up to the different pipeline sections of a plurality of lengths and pipe diameters at the second pipeline to further noise absorption, with the wholeness ability of optimizing the refrigerator, improve user experience.
As shown in fig. 7 to 12, the elastic body 7 has a main body portion 74 to which the vacuum pump 3 is attached, and the main body portion 74 is provided with an attachment cavity 74a conforming to the shape of the vacuum pump 3; the radial dimension of the mounting cavity 74a of the main body portion 74 is smaller than the radial dimension of the corresponding position of the vacuum pump 3, so that the elastic body 7 is tightly attached to the vacuum pump 3, and the vibration on the vacuum pump 3 is absorbed.
A positioning block 3a is arranged at one end of the vacuum pump 3 opposite to the end provided with the air exhaust pipe 16 and the exhaust pipe 17; one end of the mounting cavity 74a of the main body 74 is provided with a through hole 75 for the exhaust pipe 16 and the exhaust pipe 17 to penetrate through, the other end is provided with an end cover 76 matched with the end part of the vacuum pump 3, and the end cover 76 is provided with a positioning hole 76a matched with the positioning block 3 a; to protect the end of the vacuum pump 3.
The outer periphery of the body portion 74 is provided with a plurality of protrusions 77 arranged side by side along the central axis of the body portion 74 and surrounding the body portion 74. The projection 77 includes a first projection 77a, a second projection 77b, and a third projection 77c which are arranged in order in the central axis direction of the main body portion 74 and have the same size; wherein the third protrusion 77c is located at an end of the body portion 74 near the through hole 75. A plurality of fourth protrusions 77d are provided in the region between the first protrusion 77a and the second protrusion 77b and the region between the second protrusion 77b and the third protrusion 77 c; wherein the outer diameter of the fourth projection 77d is smaller than the outer diameter of the first projection 77 b. The third protrusion 77c is provided with a limit notch 70.
The provision of the elastic body 7 can effectively reduce the transmission of the vibration of the vacuum pump 3 to the pump housing 6.
In the present embodiment, as shown in fig. 13, referring to fig. 7 to 8, the pump housing 6 includes a first housing 6b and a second housing 6a, and the first housing 6b is engaged with the second housing 6a to be mounted outside the elastic body 7. Specifically, a bump is arranged on the first shell 6b, and a clamping hole matched with the bump on the first shell 6b is arranged on the second shell 6 a; the pump shell 6 is arranged in a split mode, and is convenient to disassemble and assemble.
The inner wall of the second housing 6a is provided with a convex strip 62, and the convex strip 62 is installed in the limit notch 70 of the third protrusion 77c on the elastic body 7, so that the elastic body 7 can be prevented from rotating along the circumferential direction of the central shaft of the pump housing 6. The protrusion 62 is half the length of the pump housing 6 and is mounted between the second projection 77b and the third projection 77c of the elastic body 7, so that the elastic body 7 can be effectively prevented from moving in the central axis direction of the pump housing 6. The arrangement of the upper limiting notch 70 of the elastic body 7 and the arrangement of the convex strip 62 on the inner wall of the pump shell 6 can effectively avoid the relative displacement between the elastic body 7 and the pump shell 6, so as to ensure the effective vibration reduction of the elastic body 7.
The pump shell 6 is provided with a connecting plate 61 fixed with the inner container 2 b; specifically, in the present embodiment, the connection plate 61 is provided on the second housing 6 a. The end of the connecting plate 61 remote from the central axis of the pump housing 6 is provided with a mounting notch 61 a. Along the direction of keeping away from pump case 6 center pin, the region that installation breach 61a is close to connecting plate 61 border is the shrink form, and above setting up can ensure that installation breach 61a has sufficient accommodation space to can effectively fix the installation component in it, avoid droing. In this embodiment, the projection shape of the mounting notch 61a on the connecting plate 61 is a major arc. In the present embodiment, the connection plate 61 is provided on the outer periphery of the first housing 6 b; wherein, the two edges of the first shell 6b and the second shell 6a which are butted are both provided with connecting plates 61.
A connecting plate 61 of the pump shell 6 is provided with a vibration damping part 8; the vibration damper 8 is mounted on the inner wall of the inner container 2 b; the screws pass through the damper 8 and engage with the mounting holes to fix the damper 8 to the inner container 2b, i.e., to fix the vacuum pump assembly to the inner container 2 b. The arrangement of the vibration damper 8 avoids the rigid connection between the pump shell 3 and the inner container 2b, and the transmission of the vibration of the vacuum pump assembly to the inner container 2b can be effectively reduced.
The arrangement of the vibration damping piece 8 on the connecting plate 61 of the pump shell 6 and the arrangement of the elastic body 7 sleeved outside the vacuum pump 3 can realize two-stage vibration damping, reduce the transmission of the noise generated by the vacuum pump 3 to the inner container 2b, and further reduce the whole noise of the refrigerator.
The vibration damper 8 comprises a fixed column, fixed pads 81a arranged at two end parts of the fixed column and a fixed through hole 81c penetrating through the fixed column and the fixed pads 81 a; an annular mounting groove 82 is formed between the fixing pads 81a provided at both end portions of the fixing post. The fixed column of the vibration damper 8 is mounted in the mounting notch 61a on the pump shell 6, and the connecting plate 61 on the pump shell 6 is mounted in the mounting groove 82 of the vibration damper 8. Wherein, the size of the fixing pad 81a is larger than the size of the mounting hole on the inner container 2 b. In this embodiment, the end surface of the fixing pad 81a away from the fixing column is provided with a protrusion for reducing the contact area between the fixing pad 81a and the inner container 2b and improving the contact stability.
When the vacuum pump is installed, the vacuum pump 3, the pump shell 6 and the elastic body 7 are assembled into a whole; the fixed column of the vibration damper 8 is arranged in the mounting notch 61a of the connecting plate 61 on the pump shell 6; the screws pass through the fixing through holes 81c on the vibration damping piece 8 arranged on the pump shell 6 and are matched with the mounting holes on the inner container 2b so as to realize the fixation of the screws and the inner container 2b, namely, the fixation of the vacuum pump assembly and the inner container 2b is completed.
In this embodiment, the vibration damper 8 is disposed between the vacuum pump assembly and the inner container 2b to effectively absorb vibration and reduce the transmission of vibration. Make vacuum pump subassembly and the indirect rigid contact of inner bag through above setting up, can effectively avoid the transmission of the produced noise of vacuum pump during operation, optimize the wholeness ability of refrigerator, improve user experience.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. The refrigerator is characterized in that: it includes:
the low-temperature storage compartment is surrounded by the inner container;
the low-pressure storage unit is positioned in the low-temperature storage room and can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to be beneficial to the fresh keeping of food;
the vacuum pump is communicated with the low-pressure storage unit and is used for pumping out air in the low-pressure storage unit; the low-pressure storage unit is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit;
a second pipeline communicated with the exhaust pipe; the second pipeline comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated, and the first pipe section is connected with the exhaust pipe;
the first mentionedThe lengths of the first pipe section, the second pipe section and the third pipe section are sequentially marked as L1、L2、L3The pipe diameter is marked as D1、D2、D3(ii) a Wherein L is1＜L2，L1＜L3；D1＜D2，D3＜D2。
2. The refrigerator according to claim 1, wherein: l is2：L1∈[7，12]，L3：L1∈[7，14]；D1＝D3，D2：D1∈[1.5，5]。
3. The refrigerator according to claim 1, wherein:
the outside cover of vacuum pump is equipped with the elastomer, the elastomer includes:
the main body part is provided with a mounting cavity for accommodating the vacuum pump;
and the bulge is arranged around the periphery of the main body part.
4. The refrigerator according to claim 3, wherein: the exhaust pipe and the exhaust pipe are arranged at one end of the vacuum pump, and a positioning block is arranged at the other end of the vacuum pump; and one end of the mounting cavity is provided with a through hole for the exhaust pipe and the exhaust pipe to penetrate out, the other end of the mounting cavity is provided with an end cover matched with the end part of the vacuum pump, and the end cover is provided with a positioning hole matched with the positioning block.
5. The refrigerator of claim 4, wherein:
the bulges comprise a first bulge, a second bulge and a third bulge which are sequentially arranged along the central axis direction of the main body part and have the same size; wherein the third protrusion is located at an end of the main body portion near the through hole;
a plurality of fourth bulges are arranged in the area between the first bulge and the second bulge and the area between the second bulge and the third bulge; and the outer diameter of the fourth protrusion is smaller than the outer diameter of the first protrusion.
6. The refrigerator according to claim 5, wherein:
a limiting notch is formed in the third bulge;
a pump shell is sleeved on the outer side of the elastic body and fixedly connected to the inner container; the pump shell is characterized in that a raised line is arranged on the inner wall of the pump shell and is installed in the limiting notch.
7. The refrigerator according to claim 6, wherein:
the pump shell is provided with a connecting plate fixed with the inner container, and a vibration damping part is arranged between the connecting plate and the inner container.
8. The refrigerator according to claim 7, wherein:
the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;
the vibration damping piece comprises a fixed column arranged in an installation notch on the pump shell and fixed cushions arranged at two end parts of the fixed column; and an installation groove for accommodating the pump shell upper connecting plate is formed between the fixing cushions arranged at the two end parts of the fixing column.
9. The refrigerator according to claim 6, wherein: an accommodating cavity which is sunken backwards is formed on the inner container; the accommodating cavity accommodates at least part of the pump shell, and a separation space is formed between the cavity wall of the accommodating cavity and the pump shell.
10. The refrigerator according to any one of claims 1 to 6, wherein:
a drain pipe is arranged on the refrigerator;
the second pipeline is communicated with the exhaust pipe and the drain pipe;
when the vacuum pump works, air in the low-pressure storage unit is conveyed to the drain pipe through the air suction pipe, the vacuum pump, the exhaust pipe and the second pipeline in sequence, and finally is discharged out of the refrigerator through the drain pipe.
CN202020770790.2U 2020-05-11 2020-05-11 Refrigerator with a door Active CN212179335U (en)

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PCT/CN2020/129903 WO2021227420A1 (en) 2020-05-11 2020-11-18 Refrigerator

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JP2005055031A (en) * 2003-08-01 2005-03-03 Mitsubishi Electric Corp Refrigerator-freezer and food storage method for refrigerator
CN106593822B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN207261253U (en) * 2017-10-18 2018-04-20 佛山市顺德区美诺电器科技有限公司 A kind of damping and silencing device of breast pump
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