CN110986188B - Variable rigidity callus on sole, compressor and air conditioner - Google Patents
Variable rigidity callus on sole, compressor and air conditioner Download PDFInfo
- Publication number
- CN110986188B CN110986188B CN201911103585.9A CN201911103585A CN110986188B CN 110986188 B CN110986188 B CN 110986188B CN 201911103585 A CN201911103585 A CN 201911103585A CN 110986188 B CN110986188 B CN 110986188B
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- support body
- permanent magnet
- variable stiffness
- compressor
- footpad
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
Abstract
The invention provides a variable-rigidity foot pad, a compressor and an air conditioner, and relates to the technical field of air conditioners; the variable-rigidity foot pad comprises a support body, a permanent magnet and a magnetorheological elastomer; the permanent magnet is arranged on the support body, the magnetorheological elastomer is arranged on the outer wall of the support body and corresponds to the permanent magnet, and the support body is provided with a demagnetizing device which can be used for eliminating the magnetism of the permanent magnet. The invention meets the requirements of the compressor under various working conditions, provides high-rigidity support during transportation, installation and drop test, can provide low-rigidity buffering vibration-damping support during normal operation, effectively reduces vibration and noise, is convenient to adjust the posture of the compressor after assembly, and improves the stability of the compressor.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a variable-rigidity foot pad, a compressor and an air conditioner.
Background
The compressor is one of the core components of the air conditioner and is also an important source of vibration noise of an external unit of the air conditioner. When the compressor works, vibration noise with certain frequency is necessarily generated due to the periodic motion of the eccentric rotor inside the compressor. In the vibration reduction mode of the compressor in the prior art, vibration energy generated in the working process of the compressor is mainly attenuated by the vibration reduction foot pads and transmitted to the base plate, so that vibration is reduced, and noise is reduced.
The foot pad is usually made of rubber, but the foot pad is usually high in rigidity due to the influence of the material, and when the air conditioner runs, the vibration isolation effect is general, and large vibration still exists, so that the noise is large. In addition, the specifications of all foot pads are uniform, and the eccentricity of the compressor can cause the compressor to actually incline after being assembled, so that the vibration reduction and the noise reduction are not facilitated.
The utility model with the publication number of CN205446534U discloses a vibration damping foot pad and an air conditioner outdoor unit, wherein the vibration damping foot pad is specifically disclosed; it is through being equipped with the spring at the callus on the sole overcoat to set up the callus on the sole into looks alternate segregation elasticity footstock and elastic base, thereby improve the damping effect. However, such a foot pad is too soft, and the rigidity of the spring sleeved outside the foot pad is too low, so that a stable support cannot be provided, the requirements of the air conditioner compressor in transportation and drop tests cannot be met, and the foot pad is difficult to use in practical application.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the variable-rigidity foot pad which can meet the requirements of a compressor under various working conditions, is convenient for adjusting the posture of the compressor after assembly and improves the stability of the compressor.
Another object of the present invention is to provide a compressor.
Another object of the present invention is to provide an air conditioner.
The purpose of the invention is realized by the following technical scheme:
a variable-rigidity foot pad comprises a support body, a permanent magnet and a magnetorheological elastomer; the permanent magnet is arranged on the support body, the magnetorheological elastomer is arranged on the outer wall of the support body and corresponds to the permanent magnet, and the support body is provided with a demagnetizing device which can be used for eliminating the magnetism of the permanent magnet.
In a preferred embodiment of the present invention, the support body has a mounting through hole in the middle.
Preferably, the permanent magnet is disposed on an inner wall of the mounting through-hole.
Preferably, the demagnetizing device is arranged on the outer wall of the supporting body and is arranged corresponding to the permanent magnet.
In a preferred embodiment of the present invention, the magnetorheological elastomer is a spring, and the spring is sleeved on the outer wall of the support body; the spring is arranged in a hollow mode, and magnetorheological fluid is arranged at the hollow position of the spring.
In one aspect of the present invention, the demagnetizing device is formed by a current conducting wire which is arranged around the outer wall of the supporting body.
In a preferred embodiment of the present invention, the support body is made of a rubber material.
According to a preferable scheme of the invention, along the height direction of the support body, the top and the bottom of the support body are respectively provided with a top limiting ring and a bottom limiting ring, an installation space is formed between the top limiting ring and the bottom limiting ring, and the outer diameter of the installation space is smaller than the outer diameters of the top limiting ring and the bottom limiting ring; the magnetorheological elastomer and the demagnetizing device are both arranged on the installation space.
Preferably, a first auxiliary limiting ring is arranged below the top limiting ring, and a second auxiliary limiting ring is arranged above the bottom limiting ring.
In a preferred embodiment of the present invention, an outwardly extending fixing ring is disposed at an edge of a top surface of the supporting body, and a mounting groove is formed between the fixing ring and the top limiting ring.
Preferably, the top edge of the fixing ring is provided with a round angle.
In a preferred embodiment of the present invention, the support body has a cylindrical outer shape.
In a preferred embodiment of the present invention, the permanent magnet is disposed on an outer wall of the support, the demagnetizing device is disposed on the permanent magnet, and the magnetorheological elastic member is disposed on the demagnetizing device in a surrounding manner.
A compressor comprising the variable stiffness foot pad described above.
An air conditioner comprises the variable-rigidity foot pad.
The invention has the beneficial effects that:
1. through the arrangement of the permanent magnet, the magnetorheological elastic part is kept in a high-rigidity form (solid state), so that the support body supports the compressor with good rigidity, a good vibration damping effect is obtained in the air conditioner transportation, installation and drop test processes, the problems of vibration, bumping, pipeline stress and the like of the compressor are effectively prevented, and the pipeline meets the stress permission requirement; aiming at the non-operation state of the compressor in the transportation, installation and drop test, the rigidity requirement of the magnetorheological elastic part can be ensured through the arrangement of the permanent magnet, the work of a demagnetizing device is not needed, the cost is saved, the control is simplified, the structure is simple, and the design is ingenious.
2. When the air conditioner is normally used by a user, the compressor vibrates, and according to the vibration isolation principle, a foot pad with lower rigidity is needed, so that a better vibration isolation effect can be achieved on the vibration of the compressor in a larger working frequency range. Therefore, at the moment, the magnetism of the permanent magnet is eliminated or weakened by controlling the operation of the demagnetizing device, so that the size of a magnetic field of the magnetorheological elastic part is reduced, the form (liquid state) of the magnetorheological elastic part is changed, the rigidity of the magnetorheological elastic part is reduced, a support body with lower rigidity is formed, the foot pad obtains a good vibration isolation effect, and finally the vibration reduction and the noise reduction of the compressor are realized.
3. In order to solve the problem of compressor inclination after installation caused by the eccentricity of the compressor, the shape of the magnetorheological elastic part on each foot pad can be changed by adjusting the degaussing capability of the degaussing device, so that the rigidity of the foot pads on the compressor is different (the rigidity of the foot pad close to the gravity center of the compressor is increased), the eccentricity problem of the compressor is solved, and the compressor is stably placed after installation.
4. The invention adopts the magnetorheological elastic element, and can realize the change of rigidity by changing the shape of the magnetorheological elastic element, thereby realizing the stepless regulation of the foot pad.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1-3 are schematic structural views of a first embodiment of a variable stiffness footpad of the present invention, in which fig. 1 is a sectional elevation view of the structure, fig. 2 is a sectional elevation view of the structure of a support body, and fig. 3 is a schematic elevation view of the structure after installation with a compressor base plate.
FIG. 4 is a front structural cross-sectional view of a second embodiment of a variable stiffness footpad in accordance with the present invention.
FIG. 5 is a front cross-sectional view of a fifth embodiment of a variable stiffness footpad of the present invention
Detailed Description
The invention is further described with reference to the following examples.
Example 1
Referring to fig. 1-3, the variable stiffness foot pad of the present embodiment includes a support body 1, a permanent magnet 5, a demagnetizing device 4, and a magnetorheological elastomer 3; the magnetorheological elastomer 3 is a spring, and the spring is sleeved on the outer wall of the support body 1; the spring is arranged in a hollow mode, and magnetorheological fluid 6 is arranged at the hollow position of the spring; the demagnetizing device 4 is composed of an electrified lead which is arranged on the outer wall of the supporting body 1 in a surrounding way and is positioned at the gap of the spring to form a conductive coil; the middle part of the support body 1 is provided with a mounting through hole 2, the permanent magnet 5 is arranged on the inner wall of the mounting through hole 2, and the permanent magnet 5 is arranged at a position corresponding to the position of the magnetorheological elastomer 3.
Through setting up installation through-hole 2 at the middle part of supporter 1, the mode of being convenient for adopt rag bolt is fixed with whole callus on the sole to the setting of the permanent magnet 5 of being convenient for sets up permanent magnet 5 on installation through-hole 2's inner wall, saves space, need not to establish in addition that the part carries out permanent magnet 5 and fixes, and can avoid external magnetic influence to permanent magnet 5. Since the demagnetizing device 4 generally needs to be connected with a circuit or other components, the demagnetizing device 4 is disposed on the outer wall of the supporting body 1, which facilitates connection, maintenance, and disassembly. The demagnetizing device 4 of the embodiment adopts an electrified lead, has simple structure and low cost, and is convenient to realize; and through the circuit intercommunication with circular telegram wire and compressor, through setting up parts such as corresponding control switch, can realize circular telegram at any time, be convenient for control to the magnetism condition of eliminating of permanent magnet 5. In addition to the spring, the magnetorheological elastic member in this embodiment may be further provided with other flexible elements or elastic elements as a carrier, and loaded with the magnetorheological fluid 6 or magnetorheological grease.
In the present embodiment, the support body 1 is made of a rubber material. The supporting body 1 made of rubber materials is adopted, so that the whole foot pad in an initial state also has a certain flexible effect, a slight damping effect can be achieved on the compressor, the overhigh rigidity of the whole foot pad is avoided, the compressor cannot obtain buffering in the transportation and drop test, and the compressor is easy to damage.
Referring to fig. 1-2, a top limit ring 8 and a bottom limit ring 11 are respectively arranged at the top and the bottom of the support body 1 along the height direction of the support body 1, a mounting space 12 is formed between the top limit ring 8 and the bottom limit ring 11, and the outer diameter of the mounting space 12 is smaller than the outer diameters of the top limit ring 8 and the bottom limit ring 11; the magnetorheological elastomer 3 and the demagnetizing device 4 are both arranged on the installation space 12. Through setting up such support column, through the position of top spacing ring 8 and the fixed magnetic current becomes elastomer 3 of bottom spacing ring 11, avoid shifting to when the deformation of high change takes place for supporter 1, can receive the effect of magnetic current becomes elastomer 3 more firmly. Meanwhile, the thickness of the supporting body 1 arranged in the way is reduced at the installation space 12, the influence of the permanent magnet 5 on the magnetorheological elastomer 3 is improved, and the rigidity change effect is enhanced.
Referring to fig. 1-2, a first auxiliary limiting ring 9 is arranged below the top limiting ring 8, and a second auxiliary limiting ring 10 is arranged above the bottom limiting ring 11. Therefore, the magnetorheological elastomer 3 can be clamped and fixed well, and the effect influence on the support body 1 is improved.
Referring to fig. 1-2, the edge of the top surface of the supporting body 1 is provided with a fixing ring 7 extending outwards, and a mounting groove 15 is formed between the fixing ring 7 and the top limit ring 8. The mounting groove 15 is formed by the arrangement of the fixing ring 7, so as to be fixed with the bottom plate 13 of the compressor.
Referring to fig. 1-2, the top edge of the fixing ring 7 is provided with a rounded corner. This facilitates the mounting of the support body 1 into the corresponding mounting hole of the bottom plate 13.
In this embodiment, the support body 1 has a cylindrical outer shape. This facilitates the circumferential fixing of the magnetorheological elastomer 3 and the current supply conductors.
Referring to fig. 1-2, the permanent magnet 5 has an N pole facing upward and an S pole facing downward. The permanent magnet 5 may be arranged with the S pole upward and the N pole downward.
Referring to fig. 1-3, the working principle of the variable stiffness footpad of the present embodiment is:
according to the principle of the magnetorheological fluid 6, when the magnetorheological fluid 6 exists in a magnetic field-free environment, the magnetorheological fluid 6 mainly exists in a liquid state, and the magnetorheological fluid 6 is reduced in fluidity in a magnetic field environment and mainly appears in a solid state, and the characteristics can be shown as continuous changes along with the change of the strength of an external magnetic field.
When the air conditioner is in transportation and installation, in order to prevent the vibration and jolt of the compressor and the pipeline stress and other problems, the foot pad with higher rigidity is needed to ensure that the compressor vibrates less, the displacement of the compressor in the transportation jolt process is reduced, and meanwhile, the pipeline is needed to meet the stress permission requirement. At the moment, due to the existence of the permanent magnet 5 on the inner wall of the support body 1, the magnetorheological fluid 6 inside the spring is always in a solid state, so that the rigidity of the spring is higher, the whole foot pad has good rigidity, the compressor is stably supported, and the vibration of the compressor is reduced. Aiming at the non-operation state of the compressor in the transportation, installation and drop test, the rigidity requirement of the spring can be ensured through the arrangement of the permanent magnet 5, the work of the demagnetizing device 4 is not needed, the cost is saved, the control is simplified, the structure is simple, and the design is ingenious.
When the air conditioner is normally used in a user home, the compressor generates vibration when running, and according to the vibration isolation principle, a foot pad with lower rigidity is needed at the moment, so that a better vibration isolation effect on the vibration of the compressor in a larger working frequency range can be achieved, and at the moment, the power is supplied to the power supply lead, so that a magnetic field with the magnetism opposite to the axial direction of the permanent magnet 5 is formed, the magnetic field is offset with the magnetic field of the permanent magnet 5, and the spring is positioned in an occasion with the magnetic field being zero. At the moment, the magnetorheological fluid 6 in the spring exists in a liquid state, and the rigidity of the spring is low, so that the whole foot pad has a good buffering and vibration isolating effect. The rigidity of the foot pad is changed by adopting a power-on degaussing mode, so that the foot pad is convenient to control and good in effect.
In order to solve the phenomenon of inclination of the compressor caused by the eccentricity problem of the compressor after installation, the phenomenon can be eliminated by adjusting the rigidity of the spring on the three foot pads of the compressor, namely increasing the rigidity of the spring on the foot pad close to the gravity center. The state of the magnetorheological fluid 6 of each foot pad is controlled through the power-on condition, so that the rigidity stepless adjustment of each foot pad is realized, and the stable placement of the compressor is realized.
The compressor of this embodiment includes the variable stiffness foot pad described above.
The air conditioner of the embodiment comprises the variable-rigidity foot pad.
Example 2
Referring to fig. 4, the present embodiment is different from embodiment 1 in that the demagnetizing device 4 is composed of a heating block 14, and the heating block 14 is disposed on the outer wall of the supporting body 1, and when demagnetization is required, the temperature of the heating block 14 is appropriately increased by applying current to the heating block 14, so that heat is transferred to the inner wall of the supporting body 1, and further, the magnetism of the permanent magnet 5 is weakened by high-temperature demagnetization, thereby realizing the rigidity change of the magnetorheological elastic member. Compared with the mode of coil demagnetization in the embodiment 1, the structure is simpler by arranging the heating block 14, and the heating block 14 is fixed on the outer wall of the support body 1; in addition, the heat generated during the operation of the compressor can be transmitted to the heating block 14, so that the heat can be recycled, the cost is saved, and the heat generated during the operation of the compressor is changed into valuable.
Example 3
The present embodiment is different from embodiment 1 in that the support body 1 of the present embodiment is a polygonal prism, for example, a quadrangular prism. The support body 1 is arranged to be a prism with different polygons, which is beneficial to adapt to the fixation of different compressor bottom plates 13.
Example 4
The present embodiment is different from embodiment 1 in that the mounting through-hole 2 of the present embodiment is a square hole. The mounting through hole 2 is arranged to be a square hole, so that the inner wall of the support body 1 is a plane, and the permanent magnet 5 is convenient to fix.
Example 5
Referring to fig. 5, the present embodiment is different from the embodiment in that the permanent magnet 5 is disposed on the outer wall of the support body 1, the demagnetizing device 4 is disposed on the permanent magnet 5, and the magnetorheological elastic member 3 is disposed around the demagnetizing device 4. The demagnetizing device 4 is an electrified lead, the electrified guide is wound on the permanent magnet 5, the magnetorheological elastic part 3 is a spring, and the magnetorheological elastic part 3 is wound on the electrified lead. Therefore, the permanent magnet 5, the demagnetizing device 4 and the magnetorheological elastic part 3 can be arranged on the outer wall of the support body 1, through holes do not need to be formed in the support body 1, the manufacturing difficulty of the support body 1 is reduced, and the cost is reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (14)
1. A variable stiffness footpad, comprising: the magnetorheological damper comprises a support body, a permanent magnet and a magnetorheological elastomer; wherein the permanent magnet is arranged on the support body, the magnetorheological elastomer is arranged on the outer wall of the support body and corresponds to the permanent magnet, the support body is provided with a demagnetizing device which can be used for eliminating the magnetism of the permanent magnet,
the magnetorheological elastomer is a spring which is sleeved on the outer wall of the support body; the spring is arranged in a hollow mode, and magnetorheological fluid is arranged at the hollow position of the spring.
2. The variable stiffness footpad of claim 1, wherein: and the middle part of the support body is provided with a mounting through hole.
3. The variable stiffness footpad of claim 2, wherein: the permanent magnet is arranged on the inner wall of the mounting through hole.
4. The variable stiffness footpad of claim 3, wherein: the demagnetizing device is arranged on the outer wall of the supporting body and corresponds to the permanent magnet.
5. The variable stiffness footpad of claim 1, wherein: the demagnetizing device is composed of an electrified lead which is arranged on the outer wall of the supporting body in a surrounding mode.
6. The variable stiffness footpad of claim 1, wherein: the support body is made of a rubber material.
7. A variable stiffness footpad in accordance with claim 1 or 6, wherein: along the height direction of the support body, the top and the bottom of the support body are respectively provided with a top limiting ring and a bottom limiting ring.
8. The variable stiffness footpad of claim 7, wherein: a first auxiliary limiting ring is arranged below the top limiting ring, and a second auxiliary limiting ring is arranged above the bottom limiting ring.
9. The variable stiffness footpad of claim 8, wherein: the top surface edge of supporter is equipped with the solid fixed ring of outside extension, gu fixed ring with form a mounting groove between the top spacing ring.
10. The variable stiffness footpad of claim 9, wherein: the top edge of the fixing ring is provided with a round angle.
11. The variable stiffness footpad of claim 1, wherein: the outer shape of the support body is a cylinder.
12. The variable stiffness foot pad of claim 1, wherein the permanent magnet is disposed on an outer wall of a support body, the degaussing device is disposed on the permanent magnet, and the magnetorheological elastomer is disposed around the degaussing device.
13. A compressor, characterized by: a variable stiffness foot pad comprising the variable stiffness foot pad of claims 1-12.
14. An air conditioner, characterized in that: a variable stiffness foot pad comprising the variable stiffness foot pad of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103585.9A CN110986188B (en) | 2019-11-13 | 2019-11-13 | Variable rigidity callus on sole, compressor and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103585.9A CN110986188B (en) | 2019-11-13 | 2019-11-13 | Variable rigidity callus on sole, compressor and air conditioner |
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| CN110986188A CN110986188A (en) | 2020-04-10 |
| CN110986188B true CN110986188B (en) | 2020-11-24 |
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| CN110986188A (en) | 2020-04-10 |
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