CN113915102A - Vacuum pump mounting assembly, manufacturing method thereof and refrigerator - Google Patents
Vacuum pump mounting assembly, manufacturing method thereof and refrigerator Download PDFInfo
- Publication number
- CN113915102A CN113915102A CN202110658426.6A CN202110658426A CN113915102A CN 113915102 A CN113915102 A CN 113915102A CN 202110658426 A CN202110658426 A CN 202110658426A CN 113915102 A CN113915102 A CN 113915102A
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- Prior art keywords
- vacuum pump
- foaming
- mounting assembly
- connecting piece
- pump mounting
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000005187 foaming Methods 0.000 claims abstract description 64
- 239000002994 raw material Substances 0.000 claims description 29
- 239000004814 polyurethane Substances 0.000 claims description 22
- 239000006260 foam Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 19
- 229920002635 polyurethane Polymers 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 239000006261 foam material Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 16
- 239000000306 component Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000010097 foam moulding Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1228—Joining preformed parts by the expanding material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
-
- 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
- F25D17/042—Air treating means within refrigerated spaces
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressor (AREA)
Abstract
The invention relates to the technical field of household appliances and discloses a vacuum pump mounting assembly, a manufacturing method thereof and a refrigerator, wherein the vacuum pump mounting assembly comprises a vacuum pump body and a rigid connecting piece, the connecting piece is arranged on the outer side of the vacuum pump body, and a connecting hole for a screw to pass through is formed in the connecting piece; the vacuum pump body and the connecting piece are connected through a foaming body in a primary foaming mode, and the periphery of the vacuum pump body and the connecting piece are wrapped with the foaming body. By adopting the vacuum pump mounting assembly, the manufacturing method thereof and the refrigerator, the manufacturing cost is reduced, the vibration and noise level is reduced, the vibration transmission caused by the connection of all the assembly parts is reduced, the parts and the components are reduced, the cost is reduced, and the abnormal noise of the vacuum pump body is avoided.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a vacuum pump mounting assembly, a manufacturing method thereof and a refrigerator.
Background
At present, in a micro vacuum system applied to the inside of a refrigerator, air in a closed container is pumped to the outside by a vacuum pump to realize negative pressure in the closed container. The main principle is that a micro vacuum pump is used for pumping a part of gas in a closed food storage space (drawer/box), partial vacuum is realized in the storage space, the oxygen concentration and content of internal gas are reduced, and the purpose of prolonging the storage period of food is further achieved. Wherein, the micro vacuum pump and the sealed drawer are the core components of the system. Vacuum pumps usually use an electric motor (motor) to drive a pump body (usually a piston pump, a diaphragm pump, etc.) to move, and the process of suction-exhaust-suction-exhaust is repeated continuously. Due to the inherent design of the vacuum pump, the diaphragm inside the vacuum pump is driven by the motor to do reciprocating motion, and vibration and noise are inevitably generated in the running process of the system. In order to reduce the noise and vibration of the micro diaphragm vacuum pump during use, corresponding noise reduction measures need to be taken. The common noise reduction measures comprise the steps of carrying out frequency reduction operation on a vacuum pump and reducing load; a specially designed damping and noise-reducing component (made of rubber or silica gel) is used for wrapping the vacuum pump; and the vacuum pump is completely wrapped by adopting a sealing component.
But at present, the vibration and noise reduction assembly usually comprises a plurality of components, including a noise reduction rubber sleeve wrapped outside a vacuum pump, an installation shell outside the noise reduction rubber sleeve, a vibration reduction gasket between the installation shell and an installation column, an installation column and the like, and the vibration and noise reduction assembly has the advantages of more components, low installation efficiency and higher cost.
Meanwhile, due to the different materials of the components, when the assembly and the vacuum pump are assembled and operated, vibration is transmitted by the shell and the like, and secondary shock absorption and noise reduction of a rubber sleeve, a rubber pad and the like are needed.
Therefore, a vacuum pump installation method of the vibration and noise reduction technology with high efficiency, low cost and good effect is urgently needed.
Disclosure of Invention
The purpose of the invention is: the vacuum pump mounting assembly, the manufacturing method thereof and the refrigerator improve the manufacturing and mounting efficiency of the vacuum pump mounting assembly, reduce the manufacturing cost, reduce the vibration and noise level, reduce the vibration transmission caused by the connection of all assembly parts, reduce parts through the material characteristics and the integrated design, reduce the cost and further realize good physical control of the abnormal noise of the vacuum pump body.
In order to achieve the purpose, the invention provides a vacuum pump mounting assembly which comprises a vacuum pump body and a rigid connecting piece, wherein the connecting piece is arranged on the outer side of the vacuum pump body and is provided with a connecting hole for a screw to pass through; the vacuum pump body and the connecting piece are connected through a foaming body in a primary foaming mode, and the periphery of the vacuum pump body and the connecting piece are wrapped with the foaming body.
In some embodiments, the foam body comprises a mounting part and a connecting part, the mounting part is cylindrical, and the mounting part wraps the periphery of the vacuum pump body; connecting portion connect the left and right sides of installation department, connecting portion follow the radial extension setting of installation department, the connecting piece is worn to establish in the connecting portion, connecting portion parcel the periphery of connecting piece.
In some embodiments, the material of the foam is polyurethane, and the compression ratio of the foam is in the range of: 10 to 50 percent.
In some embodiments, the connecting piece is provided with a positioning surface, the connecting part is provided with a limiting surface which is matched and abutted with the positioning surface, and the height of the connecting piece is 50% -90% of that of the connecting part.
In some embodiments, the foam has a thickness of 5mm to 20 mm.
In some embodiments, the connecting member is made of metal or hard plastic.
Based on the same purpose, the invention also provides a refrigerator which comprises a refrigerator body and the vacuum pump mounting assembly, wherein the vacuum pump mounting assembly is mounted on the inner wall of the refrigerator body through screws.
With the same object in mind, the present invention also provides a method of manufacturing a vacuum pump mounting assembly, comprising the steps of:
installing a vacuum pump body and a connecting piece in a foaming mould;
after a foaming mold is closed, injecting a polyurethane raw material into the foaming mold;
foaming, forming a foaming body after foaming and curing through preset curing time, and connecting the vacuum pump body and the connecting piece through the foaming body to form an integrally-formed vacuum pump mounting assembly.
In some embodiments, during foaming after closing the mold:
the temperature of the foaming mold is maintained as follows: 60 ℃ to 70 ℃;
the temperature of the injected raw material is maintained as follows: 15 ℃ to 35 ℃;
the pressure at which the feedstock was injected was maintained as: 2MPa to 5 MPa;
the time for keeping injecting the raw material is 3 seconds to 10 seconds.
In some embodiments, the raw materials are injected simultaneously with the injection of an amount of blowing agent that is between 1% and 10% by weight of the polyurethane raw materials.
Compared with the prior art, the vacuum pump mounting assembly, the manufacturing method thereof and the refrigerator comprising the vacuum pump mounting assembly have the advantages that:
the vacuum pump mounting assembly, the manufacturing method thereof and the refrigerator comprising the vacuum pump mounting assembly of the embodiment of the invention, the vacuum pump and the connecting piece are fixed together by foaming molding, the vacuum pump body and the connecting piece after foaming become a part, thereby facilitating the installation and fixation of the vacuum pump, forming a foaming body at the periphery of the vacuum pump body and the connecting piece through foaming, when the vacuum pump body works, the foaming body can play a certain role in shock absorption, furthermore, the connecting piece is provided with a connecting hole for a screw to pass through, thereby being convenient for fixing and connecting the vacuum pump body, because the connecting piece and the vacuum pump body are integrally formed, the vacuum pump body is fixed without using a plurality of screws, the installation steps are simplified, and the problem that vibration and noise are generated when the vacuum pump body works due to the fact that too many screws are used is avoided.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention showing the construction of one of the angles of the vacuum pump mounting assembly;
FIG. 2 is a schematic view of an embodiment of the present invention showing the vacuum pump mounting assembly at one of its angles;
FIG. 3 is an exploded view of a vacuum pump mounting assembly in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a vacuum pump mounting assembly in accordance with an embodiment of the present invention;
in the figure, 1, a foaming body, 2, a vacuum pump body, 3, a connecting part, 3a, a limiting surface, 3b, a mounting hole, 4, a connecting piece, 4a, a connecting hole, 4b, a positioning surface, 5 and a mounting part.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be further explained and explained with reference to the drawings and the embodiments in the description. The step numbers in the embodiments of the present invention are set for convenience of illustration only, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.
As shown in fig. 1 to 4, a vacuum pump mounting assembly according to a preferred embodiment of the present invention includes a vacuum pump body 2 and a rigid connecting member 4, and the rigid connecting member 4 in this embodiment refers to a part made of hard polymer material such as general plastic ABS/PS/PP or engineering plastic or metal material by stamping or the like and having a certain hardness. The connecting piece 4 is arranged on the outer side of the vacuum pump body 2, and a connecting hole 4a for a screw to pass through is formed in the connecting piece 4; wherein, the vacuum pump body 2 and the connecting piece 4 are connected through the foaming body 1 by one-time foaming, and the periphery of the vacuum pump body 2 and the connecting piece 4 are wrapped by the foaming body 1.
Based on above technical scheme, be in the same place vacuum pump and connecting piece 4 are fixed through the foaming shaping, vacuum pump body 2 and connecting piece 4 after the foaming become a part, thereby be convenient for the installation and the fixing of vacuum pump, foaming body 1 has been formed at vacuum pump body 2 and connecting piece 4's periphery through the foaming, vacuum pump body 2 during operation, foaming body 1 can play certain absorbing effect, furthermore, be equipped with the connecting hole 4a that supplies the screw to pass on the connecting piece 4, thereby be convenient for the fixed and the connection of vacuum pump body 2, because connecting piece 4 and vacuum pump body 2 are integrated into one piece, thereby need not use a lot of screws to realize vacuum pump body 2's fixed, simplify the installation step, and avoid using too much screws probably to appear the problem that vibrations take place the noise when vacuum pump body 2 during operation.
In some embodiments, the foam body 1 comprises a mounting portion 5 and a connecting portion 3, the mounting portion 5 is cylindrical, and the mounting portion 5 wraps the periphery of the vacuum pump body 2, so that the mounting portion 5 forms an annular protection for the vacuum pump body 2, and the shock-resistant and noise-reducing effects are achieved; connecting portion 3 is connected in the left and right sides of installation department 5, and connecting portion 3 sets up along the radial extension of installation department 5, and connecting piece 4 wears to establish in connecting portion 3's mounting hole 3b, and connecting portion 3 wraps up the periphery of connecting piece 4. In some embodiments, the connecting portion 3 is disposed in the middle of the mounting portion 5, so that the mounting portion 5 is stressed in a balanced manner, and further, the foam body 1 has a symmetrical shape, which facilitates the foam molding of the foam body 1 and ensures good mechanical properties thereof.
In some embodiments, the material of the foam body 1 is polyurethane PU, so that the foam body 1 has a certain compression amount, which can ensure the mechanical performance of shock absorption; the compression ratio range of the foam 1 is: 10-50%, preferably about 20%, whereby the compression ratio can be adjusted according to the volume and weight of the vacuum pump body 2 to meet the damping requirements of the vacuum pump mounting assembly.
In some embodiments, the connecting member 4 has a positioning surface 4b, the connecting portion 3 is provided with a limiting surface 3a which is in fit abutment with the positioning surface 4b, and the height of the connecting member 4 is 50% -90% of that of the connecting portion 3. In some embodiments, the top surface of the connecting element 4 is flush with the top surface of the connecting part 3, the height of the connecting element 4 is not consistent with the height of the through hole on the connecting part 3 for installing the connecting element 4, and the height of the connecting element 4 is about 10-50% lower than the height of the PU after molding. That is, the connecting member 4 is buried in polyurethane, and has a height smaller than that of the connecting portion 3 formed of polyurethane PU. When the device is installed, the connecting part 3 is compressed through locking of the screw, and after the volume of the polyurethane PU is compressed, rigid buffering is formed, so that a damping effect is formed.
In some embodiments, the foam 1 has a thickness of 5mm to 20 mm. The thickness of the foam body 1 is determined according to the size of the vacuum pump body 2. In a general micro vacuum pump with air flow of 1-3L/min, the thickness of the foaming body 1 is generally between 5 mm-20 mm, and if the thickness of the foaming body 1 is too small, the damping effect will be reduced, and if the thickness of the foaming body 1 is too thick, the material will be wasted. If the foam body is a component for fitting a vacuum pump body 2 with large volume or heavy weight, such as a vacuum pump with 10L and larger flow and volume, the thickness of the foam body 1 is correspondingly enlarged.
In some embodiments, the material of the connecting member 4 is metal or hard plastic, so that the connecting member 4 can play a supporting role.
Based on the same purpose, the invention also provides a refrigerator which comprises a refrigerator body and the vacuum pump mounting assembly, wherein the vacuum pump mounting assembly is mounted on the inner wall of the refrigerator body through screws.
With the same object in mind, the present invention also provides a method of manufacturing a vacuum pump mounting assembly, comprising the steps of:
installing the vacuum pump body 2 and the connecting piece 4 in a foaming mould;
after the foaming mold is closed, injecting a polyurethane raw material into the foaming mold;
foaming, forming a foaming body 1 after foaming and curing through preset curing time, and connecting the vacuum pump body 2 and the connecting piece 4 by the foaming body 1 to form the integrally formed vacuum pump mounting assembly.
In some embodiments, during foaming after closing the mold:
the temperature of the foaming mold is maintained as follows: the temperature is 60-70 ℃, so that the temperature of the die is not too low, the flowability of the raw materials is prevented from being influenced, and the formed vacuum pump mounting assembly has good mechanical property;
the temperature of the injected raw material is maintained as follows: 15 ℃ to 35 ℃ to avoid reducing the fluidity of the raw material;
the pressure at which the feedstock was injected was maintained as: 2MPa to 5 MPa;
the time for keeping injecting the raw materials is as follows: 3 seconds to 10 seconds;
the curing time is as follows: 3 to 8 minutes.
In some embodiments, a certain amount of foaming agent is injected at the same time of injecting the raw materials, and the weight of the foaming agent is 1% -10% of that of the polyurethane raw materials, so that the foamed polyurethane raw materials are filled with fine micropores formed by air in the process of injecting the raw materials and then react and cure to form the bonded body.
The working process of the invention is as follows: the vacuum pump mounting assembly is characterized in that a metal or plastic rigid connecting piece 4 and a vacuum pump body 2 are placed in a foaming mold, a microporous elastic polyurethane elastomer (LGTPU) raw material is injected after the mold is closed, and the vacuum pump mounting assembly is formed after foaming and curing are carried out during preset curing. After the die is closed, keeping the temperature of the die at 60-70 ℃, keeping the temperature of the raw materials at 15-35 ℃, keeping the pressure of the injected raw materials at 2-5 Mpa, and keeping the time of injecting the raw materials at 3-10 seconds; and the preset curing time period is 3 to 8 minutes. The injection raw material is made of elastic polyurethane material, and the proportion of injecting a certain amount of foaming agent raw material is usually 1-10 wt% while injecting the raw material, so that in the process of injecting the shell raw material, the foamed polyurethane raw material is filled with fine micropores formed by air, and further reacts and solidifies to form an adhesive body.
In a preferred embodiment, the raw material is a two-component polyurethane which may be soft elastic.
In some embodiments, the foaming mold is provided with an injection port and a controllable exhaust port, one side of the foaming mold is charged with the material, the other side of the foaming mold is exhausted with the material, and when the amount of the material charged by injection reaches the exhaust port, the exhaust port is closed. The vent hole is not simply selected at the uppermost end of the product, but is selected at a position where the material flows last before solidification according to the state of the material. The model is known. It is contemplated that portions of the article form separate enclosed spaces before the material foams to fill the entire mold cavity to provide uniform flow of material through the mold. After the foaming process, the rigid connecting piece 4 and the vacuum pump are bonded into a whole by the elastic foaming polyurethane material due to the self-bonding property of the polyurethane foaming material, so that an integrated, seamless and complete vacuum pump mounting assembly is formed. The manufacturing method of the vacuum pump installation assembly can effectively simplify the production process, reduce labor force in the production process, reduce the number of parts, reduce cost, improve production efficiency and further improve product performance.
In summary, the embodiment of the present invention provides a vacuum pump mounting assembly, a method of manufacturing the same, and a refrigerator, in which a vacuum pump and a connecting member 4 are fixed together by foam molding, a vacuum pump body 2 and the connecting member 4 after foaming become one part, thereby facilitating the installation and fixation of the vacuum pump, forming the foam body 1 on the outer periphery of the vacuum pump body 2 and the connecting piece 4 by foaming, when the vacuum pump body 2 works, the foaming body 1 can play a certain role in shock absorption, furthermore, the connecting piece 4 is provided with a connecting hole 4a for a screw to pass through, thereby being convenient for the fixing and the connection of the vacuum pump body 2, because the connecting piece 4 and the vacuum pump body 2 are integrally formed, the fixing of the vacuum pump body 2 is realized without using a plurality of screws, the installation steps are simplified, and the problem that vibration and noise can occur when the vacuum pump body 2 works due to the use of too many screws is avoided.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Moreover, some of the above terms may be used to indicate other meanings besides orientation or position, for example, the term "on" may also be used to indicate some kind of dependency or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A vacuum pump mounting assembly, comprising:
a vacuum pump body; and
the rigid connecting piece is arranged on the outer side of the vacuum pump body, and a connecting hole for a screw to pass through is formed in the connecting piece;
the vacuum pump body and the connecting piece are connected through a foaming body in a primary foaming mode, and the periphery of the vacuum pump body and the connecting piece are wrapped with the foaming body.
2. A vacuum pump mounting assembly as claimed in claim 1, wherein the foam body comprises:
the mounting part is cylindrical and wraps the periphery of the vacuum pump body; and
connecting portion, it is connected the left and right sides of installation department, connecting portion follow the radial extension of installation department sets up, the connecting piece wears to establish in the connecting portion, connecting portion parcel the periphery of connecting piece.
3. A vacuum pump mounting assembly as claimed in claim 1, wherein the foam material is polyurethane, the foam having a compression ratio in the range: 10 to 50 percent.
4. A vacuum pump mounting assembly according to claim 2, wherein the connecting member has a locating surface, the connecting portion is provided with a limiting surface which is in fit abutment with the locating surface, and the height of the connecting member is 50-90% of the height of the connecting portion.
5. A vacuum pump mounting assembly according to claim 1, wherein the foam body has a thickness of 5mm to 20 mm.
6. A vacuum pump mounting assembly as claimed in claim 1, wherein the connector is made of metal or rigid plastic.
7. A refrigerator, characterized by comprising:
a box body;
a vacuum pump mounting assembly as claimed in any of claims 1 to 6, which is mounted on an internal wall of the casing by screws.
8. A method of manufacturing a vacuum pump mounting assembly, comprising the steps of:
installing a vacuum pump body and a connecting piece in a foaming mould;
after a foaming mold is closed, injecting a polyurethane raw material into the foaming mold;
foaming, forming a foaming body after foaming and curing through preset curing time, and connecting the vacuum pump body and the connecting piece through the foaming body to form an integrally-formed vacuum pump mounting assembly.
9. A method of manufacturing a vacuum pump mounting assembly according to claim 8, wherein during foaming after clamping:
the temperature of the foaming mold is maintained as follows: 60 ℃ to 70 ℃;
the temperature of the injected raw material is maintained as follows: 15 ℃ to 35 ℃;
the pressure at which the feedstock was injected was maintained as: 2MPa to 5 MPa;
the time for keeping injecting the raw material is 3 seconds to 10 seconds.
10. A method of manufacturing a vacuum pump mounting assembly according to claim 8, wherein the raw material is injected simultaneously with an amount of blowing agent which is 1-10% by weight of the polyurethane raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110658426.6A CN113915102B (en) | 2021-06-11 | 2021-06-11 | Vacuum pump mounting assembly, manufacturing method thereof and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110658426.6A CN113915102B (en) | 2021-06-11 | 2021-06-11 | Vacuum pump mounting assembly, manufacturing method thereof and refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915102A true CN113915102A (en) | 2022-01-11 |
| CN113915102B CN113915102B (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110658426.6A Active CN113915102B (en) | 2021-06-11 | 2021-06-11 | Vacuum pump mounting assembly, manufacturing method thereof and refrigerator |
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| CN (1) | CN113915102B (en) |
Citations (6)
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|---|---|---|---|---|
| US6085643A (en) * | 1997-01-31 | 2000-07-11 | Schott Glaswerke | Mounting arrangement for a cooking plate and related method |
| CN201302346Y (en) * | 2008-11-07 | 2009-09-02 | 上海芙蓉实业有限公司 | Assembled refrigerator |
| CN107925809A (en) * | 2015-07-31 | 2018-04-17 | Tdk株式会社 | The microphone of advance sound formula and the method for manufacture |
| CN108915203A (en) * | 2018-06-22 | 2018-11-30 | 杭州晨基住工科技有限公司 | A kind of composite floor board and floor and its manufacturing process |
| CN111473577A (en) * | 2020-04-17 | 2020-07-31 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN111947376A (en) * | 2020-08-14 | 2020-11-17 | 海信容声（扬州）冰箱有限公司 | A kind of refrigerator |
-
2021
- 2021-06-11 CN CN202110658426.6A patent/CN113915102B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6085643A (en) * | 1997-01-31 | 2000-07-11 | Schott Glaswerke | Mounting arrangement for a cooking plate and related method |
| CN201302346Y (en) * | 2008-11-07 | 2009-09-02 | 上海芙蓉实业有限公司 | Assembled refrigerator |
| CN107925809A (en) * | 2015-07-31 | 2018-04-17 | Tdk株式会社 | The microphone of advance sound formula and the method for manufacture |
| CN108915203A (en) * | 2018-06-22 | 2018-11-30 | 杭州晨基住工科技有限公司 | A kind of composite floor board and floor and its manufacturing process |
| CN111473577A (en) * | 2020-04-17 | 2020-07-31 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN111947376A (en) * | 2020-08-14 | 2020-11-17 | 海信容声（扬州）冰箱有限公司 | A kind of refrigerator |
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| CN113915102B (en) | 2023-10-27 |
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Address after: 266000 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant after: Hisense refrigerator Co.,Ltd. Address before: 266100 Songling Road, Laoshan District, Qingdao, Shandong Province, No. 399 Applicant before: HISENSE (SHANDONG) REFRIGERATOR Co.,Ltd. |
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