CN113963993A - Mute electromagnetic relay and refrigerator - Google Patents
Mute electromagnetic relay and refrigerator Download PDFInfo
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- CN113963993A CN113963993A CN202010727585.2A CN202010727585A CN113963993A CN 113963993 A CN113963993 A CN 113963993A CN 202010727585 A CN202010727585 A CN 202010727585A CN 113963993 A CN113963993 A CN 113963993A
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- 239000000872 buffer Substances 0.000 claims abstract description 61
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 230000005389 magnetism Effects 0.000 description 8
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
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- 238000010257 thawing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005307 ferromagnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnets (AREA)
Abstract
The invention relates to the technical field of relays and refrigerators, and discloses a mute electromagnetic relay and a refrigerator, wherein the mute electromagnetic relay comprises: a base is arranged in the shell; the elastic sheet base is connected to the base; the electromagnet base is connected to the base, and the electromagnet base is connected with the elastic sheet base; the fixed elastic sheet is connected with the elastic sheet base and is provided with a static contact; the armature plate is rotatably arranged between the elastic sheet base and the electromagnet base; the movable spring plate is connected to the armature plate, a movable contact is arranged on the movable spring plate, and a static contact are correspondingly arranged; the electromagnet is connected with the electromagnet base, and a yoke is connected to the electromagnet; the first buffer layer is attached to the yoke; the second buffer layer is attached to one end of the electromagnet. According to the refrigerator, the first buffer layer and the second buffer layer are arranged, so that the vibration noise of the electromagnetic relay and the refrigerator is reduced, and the user experience is greatly improved; the overall size of the electromagnetic relay is reduced by the arrangement of the action cavity and the armature plate.
Description
Technical Field
The invention relates to the technical field of relays and refrigerators, in particular to a mute electromagnetic relay and a refrigerator.
Background
The electromagnetic relay is used as an important control component in refrigeration equipment and is mainly responsible for starting and stopping control of high-voltage and high-current components such as a compressor, a defrosting heating wire, an ice crushing motor and the like. The operating principle of the electromagnetic relay is that when the electromagnet is electrified, the armature is attracted down to close the working circuits of the two contacts, when the electromagnet is powered off, the armature is pulled up by the spring to cut off the working circuits. It is usually applied in automatic control circuit, it is an automatic switch which uses small current to control large current, so it plays the role of automatic regulation, safety protection, switching circuit, etc. As shown in fig. 1, the working circuit of the electromagnetic relay is composed of a low-voltage control circuit and a high-voltage working circuit. The low-voltage control circuit consists of an electromagnet, an armature, a tension spring and a low-voltage power supply E1; the high-voltage working circuit is composed of load, power supply E2, and the fixed and movable contacts equivalent to switches. In a normal state, the spring is in a stretching state, and the armature is not in contact with the electromagnet. When the low-voltage control circuit is disconnected, no current flows in a coil of the electromagnet, the iron core has no ferromagnetism, the armature cannot be attracted down, the movable contact and the static contact are in a disconnected state, and the working circuit is disconnected; when the control circuit is closed, the coil of the electromagnet has current, the iron core has ferromagnetism, and the armature can overcome the pulling force of the tension spring to move towards the electromagnet under the attraction of the magnet and is contacted with the iron core, so that the movable contact and the static contact are in a switch-on state, and the working circuit is switched on; when the control circuit is disconnected, no current passes through the coil of the electromagnet, the iron core is demagnetized, and the armature returns to the initial position under the action of the tension spring, so that the movable contact and the static contact are in a disconnected state; therefore, the purpose of controlling the on-off of the high-voltage working circuit is achieved by changing the existence (or the magnitude) of the current in the low-voltage control circuit.
When the control circuit is closed, the attraction force of the electromagnet on the armature can enable the armature to approach the electromagnet at a certain acceleration until the armature is completely attracted, the impact of the armature on the iron core of the electromagnet can bring great vibration noise, and meanwhile, the impact of a movable contact on a fixed contact can also generate great vibration noise; when the control circuit is disconnected, the armature returns to the initial position under the action of the elastic force, and impacts the yoke iron to generate noise; because the electromagnetic relay used on the refrigerator electric control board requires a smaller size, most of the original pieces providing elastic force are spring pieces, and the spring pieces can easily generate large vibration noise due to the cantilever structure when returning to the original shape.
With the pursuit of high-quality life, the refrigerator with low noise and stable operation becomes the most basic requirement of users for the refrigerator, and is a basic factor for measuring the quality of the refrigerator. Whether the sound signal is stable in the running process of the refrigerator is also a decisive factor of a user for sound perception, and sudden changes and burrs of the sound signal in the running process of the refrigerator serve as jitter and roughness evaluation contents in sound quality basic parameters, so that the experience of the user on the refrigerator is influenced to a great extent; the electromagnetic relay is one of the noise sources that affect the stability of the sound signal.
The urban population is increased, and the use environment of the refrigerator is changed from the previous kitchen to a living room, a dining room, a balcony and even a bedroom. The NPS data in 2019 show that complaints of transient noise suddenly appearing on the refrigerator by users are obviously increased (for example, the users feed back the sound that the refrigerator can drop things or ice blocks); the electromagnetic relay is used as a control component of an electric device of the refrigerator, the circuit switching noise is high, the occurrence frequency is high, and certain users are dissatisfied; through experimental tests, the noise is generally 45-60dB, the noise difference between the refrigerator and the stable operation noise is 35-40dB, and the noise difference between the refrigerator and the stable operation noise is large, so that the relay can have obvious sound mutation during switching, and the relay is easy to perceive by a user to cause complaints.
Disclosure of Invention
In some embodiments of the present application, a silence electromagnetic relay and refrigerator are provided, silence electromagnetic relay includes first buffer layer and second buffer layer, through with first buffer layer is attached to on the yoke with the second buffer layer is attached to the absorption end of electro-magnet, buffered the armature plate with between the yoke and the armature plate with impact between the electro-magnet to reduce the noise of the electromagnetic relay and refrigerator of this application.
In some embodiments of the present application, the first buffer layer is added, and the first buffer layer is attached to the yoke to buffer the impact between the armature plate and the yoke, and the impact speed of the armature plate on the yoke is reduced, so that the electromagnetic relay of the present application reduces impact noise.
In some embodiments of this application, add the second buffer layer, attached the second buffer layer to the absorption end of electro-magnet, in order to cushion armature plate with impact between the electro-magnet has slowed down armature plate strikes impact velocity on the electro-magnet for the electromagnetic relay of this application has reduced impulsive noise.
In some embodiments of the present application, the yoke is modified in that a first buffer layer is provided at a contact portion of the yoke and the armature plate, and the movable spring plate is connected to the second connecting plate of the armature plate through a spring plate connecting plate, and when the armature plate impacts the yoke, the first buffer layer buffers vibration of the movable spring plate, and vibration noise of the electromagnetic relay is reduced.
In some embodiments of the application, the electromagnet is improved, the adsorption end of the electromagnet is attached to the second buffer layer, the movable elastic sheet is connected to the second connecting plate of the armature plate through the elastic sheet connecting plate, after the first connecting plate contacts the second buffer layer, the second connecting plate slows down the speed of the fixed elastic sheet in order to enable the second buffer layer to slow down the moving contact and the impact speed between the static contacts, and the impact noise of the electromagnetic relay is reduced.
In some embodiments of this application, improved the electro-magnet base the inside action chamber that is provided with of electro-magnet base will the shared space of contact or the separation action of first connecting plate and electro-magnet sets up the action intracavity to reduce electromagnetic relay's in this application volume.
In some embodiments of this application, improved the mode of action of armature plate, will first connecting plate is in the action of third direction is turned into the second connecting plate is at the perpendicular to the action of third direction has improved the utilization ratio of armature plate space in the third direction has reduced the armature plate is at the perpendicular to shared space volume in the third direction, and then has reduced electromagnetic relay's volume in this application.
In some embodiments of the present application, the third direction is a direction perpendicular to the top surface of the base.
In some embodiments of the present application, a movable contact and a fixed contact are modified, the fixed contact and the movable contact are respectively disposed on the fixed spring plate and the movable spring plate to buffer the impact of the fixed contact and the movable contact, and the fixed spring plate is connected to a spring plate base to transmit the vibration generated by the impact of the fixed contact and the movable contact to the spring plate base.
In some embodiments of the application, a yoke is modified to extend one end of the yoke to the bent portion, and the yoke is connected to the electromagnet adjacent to the first connecting plate to restrict rotation of the armature plate.
In some embodiments of the present application, there is provided a mute electromagnetic relay, comprising: the device comprises a shell, a base and a connecting piece, wherein the base is arranged in the shell; a dome base connected to the base; the electromagnet base is connected to the base and is connected with the elastic sheet base; the fixed elastic sheet is connected with the elastic sheet base and is provided with a static contact; the armature plate is rotatably arranged between the elastic sheet base and the electromagnet base; the movable elastic sheet is connected to the armature plate, a movable contact is arranged on the movable elastic sheet, and the movable contact is arranged corresponding to the static contact; the electromagnet is connected to the electromagnet base, and a yoke is connected to the electromagnet; a first buffer layer attached to the yoke to buffer an impact between the armature plate and the yoke; and the second buffer layer is attached to the adsorption end of the electromagnet so as to buffer the impact between the armature plate and the electromagnet.
In some embodiments of the present application, an actuating chamber is formed in the electromagnet base, and an iron core of the electromagnet extends into the actuating chamber.
In some embodiments of the present application, the armature plate includes: the first connecting plate is inserted into the action cavity and is arranged corresponding to the electromagnet; and a second connecting plate connected to the first connecting plate, wherein a bent portion is formed at a connection portion of the first connecting plate and the second connecting plate.
In some embodiments of the present application, the movable elastic piece is connected to an elastic piece connecting plate, and the elastic piece connecting plate is connected to the second connecting plate, so that the first buffer layer buffers the vibration of the movable elastic piece.
In some embodiments of the present application, the first connecting plate has a length that is less than a length of the second connecting plate.
In some embodiments of the present application, one end of the yoke extends to the bent portion, and the yoke is connected to the electromagnet adjacent to the first connection plate to restrict rotation of the armature plate.
In some embodiments of the present application, when the electromagnet obtains magnetism, the first connecting plate moves toward the electromagnet, and the second connecting plate moves toward the fixed spring piece, so that the movable contact and the fixed contact are closed.
In some embodiments of the present application, when the electromagnet loses magnetism, the first connecting plate moves away from the electromagnet, and the second connecting plate moves toward the yoke, so that the movable contact is disconnected from the stationary contact.
In some embodiments of the present application, after the first connecting plate contacts the second buffer layer, the speed of the second connecting plate moving towards the fixed spring piece is reduced, so that the second buffer layer reduces the impact speed between the movable contact and the fixed contact.
In some embodiments of the present application, a refrigerator is further provided, which includes the mute electromagnetic relay described above, where the mute electromagnetic relay is used for controlling the start and stop of a high-voltage high-current component in the refrigerator.
Drawings
Fig. 1 is a schematic structural view of an electromagnetic relay in the prior art;
fig. 2 is a schematic structural diagram of a mute electromagnetic relay according to an embodiment of the present invention;
fig. 3 is a sectional view of a mute electromagnetic relay according to an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
100. a base; 110. a spring plate base; 111. a mounting cavity; 120. an electromagnet base; 121. an action cavity;
200. fixing the elastic sheet; 210. a stationary contact;
300. an armature plate; 310. a first connecting plate; 320. a second connecting plate;
400. a movable spring plate; 410. a movable contact; 420. the elastic sheet connecting plate;
500. an electromagnet; 510. a yoke;
610. a first buffer layer; 620. a second buffer layer.
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.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 2, according to some embodiments of the present application, the mute electromagnetic relay includes a housing, the housing is wrapped outside the entire mute electromagnetic relay, and a base 100 is disposed in the housing.
The shell provides an isolated working environment for the whole mute electromagnetic relay.
Referring to fig. 3, a mounting cavity 111 is disposed inside the spring base 110, and the mounting cavity 111 is used for fixing the fixed spring 200.
The spring base 110 is used for fixing the fixed spring 200.
The dome base 110 is connected to the base 100.
Referring to fig. 3, an actuating cavity 121 is formed in the electromagnet base 120, the electromagnet base 120 is flush with the striking flake base 110, and an extending hole for extending the second connecting plate 320 to the actuating cavity 121 is formed at a connection position of the electromagnet base 120 and the striking flake base 110.
The adsorption end of the electromagnet 500 is connected to the electromagnet base 120 to fix the electromagnet 500, and the iron core of the electromagnet 500 extends to the action cavity 121; the action cavity 121 provides an isolation environment for the action process of the armature plate 300 of the mute relay, so that the action fault of the electromagnetic relay caused by the internal environment of the shell is avoided, the space inside the shell is reduced, and the volume of the mute electromagnetic relay is reduced.
The electromagnet base 120 is connected to the base 100, and the electromagnet base is connected to the dome base 110.
Referring to fig. 2 and 3, the fixed elastic sheet 200 is an elastic sheet structure, one end of the fixed elastic sheet 200 is bent to form a rectangular frame, the rectangular frame is disposed in the installation cavity 111, the rectangular frame is connected to the inner wall of the installation cavity 111, the other end of the fixed elastic sheet 200 extends to the outside of the installation cavity 111, and the other end of the fixed elastic sheet 200 is provided with a stationary contact 210.
The elastic structure of the fixed spring plate 200 can buffer the impact between the fixed contact 210 and the movable contact 410, so as to reduce the vibration generated by the impact between the fixed contact 210 and the movable contact 410, and improve the user experience.
The fixed spring plate 200 is connected to the spring plate base 110 through the matching of the rectangular frame and the mounting cavity 111, so that the vibration generated by the fixed contact point is transmitted to the spring plate base 110.
Referring to fig. 3, the armature plate 300 includes a first connection plate 310 and a second connection plate 320, the first connection plate 310 is inserted into the extension hole and extends into the actuating chamber 121, the first connection plate 310 is disposed corresponding to the suction end of the electromagnet 500, and the first connection plate 310 is used to contact or separate the armature plate 300 and the electromagnet 500; a through hole is formed in the second connecting plate 320, and the second connecting plate 320 is connected to the first connecting plate 310 to form an L-shaped armature plate 300, and a bent portion is formed at the connection of the first connecting plate 310 and the second connecting plate 320.
The length of the first connecting plate 310 is less than that of the second connecting plate 320, so that when the electromagnet 500 attracts the armature plate 300, the second connecting plate 320 can generate larger displacement by a small stroke of the first connecting plate 310, and the closing of the movable contact 210 and the stationary contact 210 is completed; the armature plate 300 is an action part of the mute electromagnetic relay, and the L-shaped armature plate 300 converts longitudinal displacement into transverse displacement, which is more beneficial to saving space.
The armature plate 300 is rotatably disposed between the dome base 110 and the electromagnet base 120.
Referring to fig. 2 and 3, the movable spring plate 400 is an elastic plate structure, and the movable spring plate 400 is provided with a movable contact 410, and the movable contact 410 is arranged corresponding to the stationary contact 210, so as to ensure the connection reliability between the movable contact 410 and the stationary contact 210.
The movable spring plate 400 is connected to the armature plate 300 through the spring plate connecting plate 420, so that the motion of the armature plate 300 is transmitted to the movable spring plate 400 to complete the closing of the movable contact 410 and the stationary contact 210; on the contrary, when the moving contact 410 is disconnected from the stationary contact, the moving spring plate 400 is restored to convert the elastic potential energy into the kinetic energy of the spring plate connecting plate 420 and the armature plate 300, and the spring plate connecting plate 420 is provided with a plurality of through holes, so that the quality of the spring plate connecting plate 420 is reduced, the rapid closing and opening of the moving contact 410 and the stationary contact 210 are ensured, the impact force between the moving contact and the stationary contact is reduced, the noise is reduced, and the user experience is improved.
In addition, the free end of the movable spring plate 400 and the fixed end of the fixed spring plate 200 are arranged in a staggered manner.
When the electromagnet 500 acquires magnetism, the movable spring plate 400 is in contact with the fixed spring plate 200, and the movable spring plate 400 deforms; when the electromagnet 500 loses magnetism, the movable spring plate 400 is restored to drive the armature plate 300 to rotate.
Referring to fig. 2 and 3, the electromagnet 500 includes an iron core, an electromagnetic coil wrapped around the iron core, and a yoke 510.
When the electromagnetic coil is electrified, the electromagnet 500 obtains magnetism, and when the electromagnetic coil is not electrified, the electromagnet 500 loses magnetism; the yoke 510 is connected to the electromagnet 500, the yoke 510 can enhance the attraction force of the electromagnetic coil, and the magnetic force lines generated by the electromagnetic coil are sealed in the electromagnet, so that the efficiency of the electromagnet 500 is improved; the other end of the yoke 510 extends to the bent portion, and the yoke 510 is disposed adjacent to the first connection plate 310 to restrict the rotation of the armature plate 300.
The electromagnet 500 is connected to the electromagnet base 120, and the iron core is inserted into the electromagnet base 120 and extends to the actuating chamber 121.
Referring to fig. 2 and 3, when the electromagnet 500 obtains magnetism, the electromagnet 500 attracts the first connecting plate 310 to move towards the electromagnet 500, the armature plate 300 rotates around the bending portion as a rotation center, and then the second connecting plate 320 is driven to move towards the fixed spring plate 200, so that the movable contact 410 and the fixed contact 210 are closed, and meanwhile, the movable spring plate 400 deforms and stores elastic potential energy; when the electromagnet 500 loses magnetism, the movable spring piece 400 recovers to release elastic potential energy, and then the first connecting plate 310 is driven to move away from the electromagnet 500, and the armature plate 300 realizes reverse rotation with the bending part as a rotation center, and then the second connecting plate 320 is driven to move towards the yoke 510, so that the movable contact 410 is disconnected from the stationary contact 210.
It should be noted that the armature plate 300 performs a rotation motion with the bent portion as a rotation center by the yoke 510 and the inner wall of the extension hole, and the extension hole has an inclined configuration for allowing the second connection plate 320 to move.
Referring to fig. 2 and 3, the first buffer layer 610 has a strip-shaped structure, and the first buffer layer 610 is made of damping materials such as rubber and silica gel.
A first buffer layer 610 is attached to the yoke 510 to buffer an impact between the armature plate 300 and the yoke 510;
when the control circuit is disconnected, the electromagnet 500 releases the attracted first connecting plate 310, the armature returns to the initial position under the action of the elastic force of the movable spring piece 400, the elastic potential energy of the spring piece is converted into the kinetic energy of the L-shaped armature plate 300 and the spring piece connecting plate 420, the armature plate 300 contacts the first buffer layer 610, the kinetic energy of the armature plate 300 is converted into the thermal energy and the elastic potential energy of the material of the first buffer layer 610, so that the speed of the second connecting plate 320 impacting the yoke 510 is reduced, and the generated noise is also reduced; meanwhile, as the armature is connected with the moving spring plate 400 through the spring plate connecting plate 420, the vibration of the armature is buffered by the first buffer layer 610, the vibration of the corresponding moving spring plate 400 is also reduced, and the noise is further reduced.
The second buffer layer 620 is a circular ring structure and made of damping materials such as rubber and silica gel.
A second buffer layer 620 is attached to the adsorption end of the electromagnet 500 to buffer the impact between the armature plate 300 and the electromagnet 500.
When the control circuit is closed, the first connecting plate 310 is close to the iron core of the electromagnet 500 at a certain speed under the action of the attractive force of the electromagnetic coil, before the first connecting plate 310 collides with the iron core, the first connecting plate 310 firstly contacts the second buffer layer 620, the kinetic energy of the armature is converted into the heat energy and the elastic potential energy of the material of the second buffer layer 620, the impact energy when the first connecting plate 310 collides with the iron core is reduced, and the impact noise is reduced; meanwhile, the second connecting plate 320 rotates to the fixed spring plate 200 by a certain angle in the rotation center of the bending part, the movable spring plate 400 deforms under the action of the spring plate connecting plate 420, the movable spring plate 400 stores elastic potential energy, the speed of the armature plate 300 is buffered along with the action of the second buffer layer 620, the impact speed of the movable contact 410 on the stationary contact 210 is reduced, and the impact noise of the movable contact 210 and the stationary contact 210 is reduced.
In addition, the damping materials such as rubber, silica gel and the like have unique viscoelastic properties due to the curled long-chain molecular structures and weak secondary force among molecules, so that the damping materials such as rubber, silica gel and the like have good vibration damping, sound insulation and buffering properties.
In the embodiment of the application, when the mute electromagnetic relay is used, the electromagnetic coil is connected to the low-voltage control circuit, the movable contact 410 and the fixed contact 210 are connected to the high-voltage working circuit, and the high-voltage working circuit is controlled by controlling the power loss of the electromagnetic coil.
According to some embodiments of the present application, the refrigerator includes the mute electromagnetic relay described above, and further includes high-voltage high-current components such as a compressor, a defrosting heating wire, and an ice crushing motor, and the mute relay is used for start-stop control of the high-voltage high-current components such as the compressor, the defrosting heating wire, and the ice crushing motor.
According to the first invention concept of the present application, since the first buffer layer is additionally provided to attach the first buffer layer to the yoke, the impact between the armature plate and the yoke is buffered, and the impact speed of the armature plate on the yoke is slowed down to reduce the impact noise of the electromagnetic relay of the present application.
According to the second invention concept of the present application, the second buffer layer is additionally arranged and attached to the adsorption end of the electromagnet, so that the impact between the armature plate and the electromagnet is buffered, the impact speed of the armature plate on the electromagnet is slowed, and the electromagnetic relay of the present application reduces impact noise.
According to the third inventive concept of the present application, since the yoke is modified, the first buffer layer is provided at the contact portion of the yoke and the armature plate, and the movable dome is connected to the second connection plate of the armature plate through the dome connection plate, when the armature plate impacts the yoke, the first buffer layer buffers the vibration of the movable dome, so that the vibration noise of the electromagnetic relay is reduced.
According to the fourth inventive concept of the present application, since the electromagnet is improved, the second buffer layer is attached to the adsorption end of the electromagnet, the movable spring plate is connected to the second connecting plate of the armature plate through the spring plate connecting plate, and when the first connecting plate contacts the second buffer layer, the moving speed of the second connecting plate towards the fixed spring plate is slowed down, so that the second buffer layer slows down the impact speed between the movable contact and the stationary contact, and further, the impact noise of the electromagnetic relay is reduced.
According to the fifth invention concept of the present application, since the electromagnet base is improved, the action cavity is provided inside the electromagnet base, and the space occupied by the contact or separation action of the first connecting plate and the electromagnet is provided in the action cavity, the volume of the electromagnetic relay in the present application is reduced, and further the production cost of the electromagnetic relay is reduced.
According to the sixth inventive concept of the present application, since the movement manner of the armature plate is improved, and the movement of the first connecting plate in the third direction is converted into the movement of the second connecting plate in the direction perpendicular to the third direction, the utilization rate of the space of the armature plate in the third direction is improved, the space volume occupied by the armature plate in the direction perpendicular to the third direction is reduced, and further, the volume of the electromagnetic relay in the present application is reduced.
According to the seventh invention concept of the present application, since the movable contact and the stationary contact are improved and the stationary contact and the movable contact are respectively disposed on the stationary spring plate and the movable spring plate, the impact of the stationary contact and the movable contact is buffered, the noise is reduced, the user experience is improved, and the stationary spring plate is connected to the spring plate base to transmit the vibration generated by the impact of the stationary contact and the movable contact to the spring plate base.
According to the sixth inventive concept of the present application, since the yoke is modified such that one end of the yoke is extended to the bent portion and the yoke is connected to the electromagnet adjacent to the first connection plate to limit the rotation of the armature plate, the operation failure occurring when the operation of the armature plate exceeds the stroke is prevented.
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 mute electromagnetic relay, comprising:
the device comprises a shell, a base and a connecting piece, wherein the base is arranged in the shell;
a dome base connected to the base;
the electromagnet base is connected to the base and is connected with the elastic sheet base;
the fixed elastic sheet is connected with the elastic sheet base and is provided with a static contact;
the armature plate is rotatably arranged between the elastic sheet base and the electromagnet base;
the movable elastic sheet is connected to the armature plate, a movable contact is arranged on the movable elastic sheet, and the static contact is arranged corresponding to the static contact;
the electromagnet is connected to the electromagnet base, and a yoke is connected to the electromagnet;
a first buffer layer attached to the yoke to buffer an impact between the armature plate and the yoke;
and the second buffer layer is attached to the adsorption end of the electromagnet so as to buffer the impact between the armature plate and the electromagnet.
2. The silent electromagnetic relay according to claim 1, wherein an actuation cavity is formed in said electromagnet base, and wherein the core of said electromagnet extends into said actuation cavity.
3. A mute electromagnetic relay according to claim 2, wherein said armature plate comprises:
the first connecting plate is inserted into the action cavity and is arranged corresponding to the electromagnet;
and a second connecting plate connected to the first connecting plate, wherein a bent portion is formed at a connection portion of the first connecting plate and the second connecting plate.
4. The mute electromagnetic relay according to claim 3, wherein the moving dome is connected with a dome connecting plate, and the dome connecting plate is connected to the second connecting plate, so that the first buffer layer buffers the vibration of the moving dome.
5. A silent electromagnetic relay according to claim 3, wherein the length of said first connecting plate is smaller than the length of said second connecting plate.
6. A silent electromagnetic relay according to claim 3, wherein one end of said yoke extends to said bent portion, and said yoke is connected to said electromagnet adjacent to said first connecting plate to restrict rotation of said armature plate.
7. A silent electromagnetic relay according to claim 4, wherein when said electromagnet is magnetized, said first connecting plate moves toward said electromagnet, and said second connecting plate moves toward said fixed spring piece, so that said movable contact and said stationary contact are closed.
8. A silent electromagnetic relay according to claim 4, wherein when said electromagnet loses its magnetic properties, said first connecting plate moves away from said electromagnet, and said second connecting plate moves toward said yoke, so that said movable contact is disconnected from said stationary contact.
9. The silent electromagnetic relay according to claim 7, wherein after the first connecting plate contacts the second buffer layer, the second connecting plate moves toward the fixed spring plate at a reduced speed, so that the second buffer layer reduces the impact speed between the movable contact and the fixed contact.
10. A refrigerator, characterized by comprising the mute electromagnetic relay of any one of claims 1 to 9, wherein the mute relay is used for controlling the on and off of high-voltage high-current components in the refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727585.2A CN113963993A (en) | 2020-07-21 | 2020-07-21 | Mute electromagnetic relay and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727585.2A CN113963993A (en) | 2020-07-21 | 2020-07-21 | Mute electromagnetic relay and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113963993A true CN113963993A (en) | 2022-01-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010727585.2A Pending CN113963993A (en) | 2020-07-21 | 2020-07-21 | Mute electromagnetic relay and refrigerator |
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| CN (1) | CN113963993A (en) |
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