Relay

Abstract

A relay disclosed by the present invention comprises a relay body and an accommodating member, the relay body comprises a magnetic circuit part and a contact part, the magnetic circuit part comprises a coil, the contact part comprises at least one contact group, and the coil and the contact group are accommodated in the accommodating member. At least one condensation channel used for condensing passing air flow is arranged in at least one air flow channel leading to the contact set. According to the invention, the freezing of the contact can be inhibited before the contact is contacted.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to a relay. Background Art

[0002] The relay includes a fixed part and a moving part. The fixed part includes a static spring assembly, which is provided with a static contact. The moving part includes an armature and a moving contact assembly fixed to the armature. The moving contact assembly is provided with a moving contact corresponding to the static contact. When the coil is not energized, the moving part remains in a position where the moving contact and the static contact are disconnected. After the coil is energized, the armature is attracted by the iron core and drives the moving contact assembly to move, so that the moving contact and the static contact are closed.

[0003] Existing relays generally have the problem of contact failure caused by condensation and ice on the contact surface in low temperature environments (such as ambient temperature ≤ -10℃), and there is an urgent need to achieve humidity control and phase change suppression through structural innovation. Summary of the Invention

[0004] The object of the present invention is to overcome the above-mentioned defects or problems in the background art and to provide a relay which can suppress contact icing before the contacts make contact.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Technical solution 1 provides a relay, including a relay body and a housing, the relay body including a magnetic circuit part and a contact part, the magnetic circuit part including a coil, the contact part including at least one contact group, the coil and the contact group are both accommodated in the housing, and at least one air flow path leading to the contact group is provided with at least one condensation channel for condensing the passing air flow.

[0007] Technical solution 2 based on technical solution 1: the relay is provided with a cooling member, the cooling member is provided with a condensation interface, and the condensation interface forms a channel wall of the condensation channel.

[0008] Technical solution three based on technical solution two: the cooling member is a cooling coating provided on the inner surface of the accommodating member.

[0009] Technical solution 4 based on technical solution 3: the condensation interface of the cooling member is at least partially spaced apart from and opposite to the outer surface of the relay body to cooperate with each other to form a condensation channel.

[0010] Technical solution five based on technical solution four: the magnetic circuit part also includes an armature and a yoke, the contact part includes a movable spring, and the condensation interface of the cooling part is at least partially spaced relative to the outer surface of at least one of the movable spring, the armature and the yoke.

[0011] Technical solution six based on technical solution five: the magnetic circuit part includes a coil frame, the coil is wound on the coil frame and the axis extends along the first direction, the contact group is located at the first end of the coil frame along the first direction and close to the first side of the coil frame along the third direction, the contact group includes correspondingly arranged moving contacts and static contacts, the moving contact swings relative to the static contact on a plane perpendicular to the second direction and is closed or disconnected with the static contact through the motion component along the first direction; the condensation channel extends at least partially along the first direction and is located on the second side of the coil frame along the third direction, and the condensation channel also extends at least partially along the third direction and is located at the first end of the coil frame along the first direction; the first direction, the second direction, and the third direction are orthogonal to each other.

[0012] Technical Solution 7 based on Technical Solution 6: The accommodating member is provided with a first wall opposite to the first end of the coil frame; an airflow reversing structure is protruded on the first wall and is close to the second side of the coil frame along the third direction, and the airflow reversing structure is used to increase the contact area between the airflow and the first wall.

[0013] Technical solution eight based on technical solution seven: the magnetic circuit part also includes an iron core; the movable spring is provided with a contact portion and a connecting portion; the iron core penetrates the coil frame along a first direction, the armature is located at the first end of the coil frame along the first direction and is fixed to the contact portion, and the contact portion is fixed to the moving contact; the yoke is provided with a first arm extending along the first direction and a second arm extending along the third direction, the first arm is fixed to the connecting portion at the second side of the coil frame along the third direction, and the second arm is fixed to the iron core at the second end of the coil frame along the first direction; the condensation interface of the cooling member avoids the contact group and is spaced relative to the movable spring, the first arm and the armature.

[0014] Technical solution nine based on technical solution one: an airflow reversing structure is protruding from the channel wall of the condensation channel, and the airflow reversing structure is used to increase the contact area between the airflow and the accommodating component; the airflow reversing structure is at least partially spaced relative to the outer surface of the relay body to cooperate therewith to form a condensation channel.

[0015] Technical solution ten based on technical solution nine: the magnetic circuit part is also provided with a coil frame, the coil is wound on the coil frame and the axis extends along the first direction, the contact group is located at the first end of the coil frame along the first direction and close to the first side of the coil frame along the third direction, the contact group includes a moving contact and a static contact arranged corresponding to each other, the moving contact swings relative to the static contact on a plane perpendicular to the second direction and is closed or disconnected with the static contact through the motion component along the first direction; the first direction, the second direction and the third direction are orthogonal; the accommodating member is provided with a first wall opposite to the first end of the coil frame, and the airflow reversing structure is protruding on the first wall.

[0016] Technical solution eleven based on any one of technical solutions seven, eight or ten: the airflow reversing structure (70) includes at least two condensation sub-channels arranged at intervals along the third direction and extending along the second direction.

[0017] Technical Solution 12 of Technical Solution 11: The airflow reversing structure includes a plurality of first protrusions protruding from the first wall along the first direction and arranged at intervals along the third direction and extending along the second direction, the condensation sub-channels are formed between the first protrusions opposite to each other, and the projections of adjacent first protrusions along the third direction on the projection surface perpendicular to the third direction at least partially overlap and are at least partially staggered by 50%.

[0018] Technical solution thirteen of technical solution ten: the magnetic circuit part is provided with an iron core, an armature and a yoke, the contact part is provided with a dynamic spring, and the dynamic spring is provided with a contact portion and a connecting portion; the iron core passes through the coil frame along the first direction, the armature is located at the first end of the coil frame along the first direction and is fixed to the contact portion, and the contact portion is fixed to the moving contact; the yoke is provided with a first arm extending along the first direction and a second arm extending along the third direction, the first arm is fixed to the connecting portion at the second side of the coil frame along the third direction, and the second arm is fixed to the iron core at the second end of the coil frame along the first direction; the armature is suitable for driving the contact portion to swing so that the moving contact and the static contact are closed or disconnected along the first direction; the channel wall of the condensation channel is also formed on the part of the contact portion that avoids the contact group and on the surface of the armature facing the first wall; the airflow reversing structure is close to the first arm of the yoke along the third direction.

[0019] Technical solution fourteen of any one of technical solutions six to eight, ten or twelve: the contact portion further includes a static spring assembly, the static spring assembly being located on a first side of the coil frame along the third direction, the static spring assembly being fixed to the static contact and cooperating with the coil frame or simultaneously cooperating with the coil frame and the accommodating member to form a blocking structure, and the projection of the static spring assembly and the coil on a projection plane perpendicular to the third direction at least partially overlap.

[0020] Technical solution 15 of technical solution 1: the magnetic circuit part includes a coil frame, the coil is wound on the coil frame and the axis extends along the first direction, and the contact group is located at the first end of the coil frame along the first direction; the relay is provided with a cooling member, the cooling member is located radially outside the coil and contacts with both ends of the coil frame along the first direction; the cooling member is provided with a plurality of condensation channels arranged at intervals and passing through.

[0021] Technical Solution 16 of Technical Solution 15: The contact group includes correspondingly arranged moving contacts and static contacts, and the moving contact swings relative to the static contact on a plane perpendicular to the second direction and closes or opens with the static contact along the first direction; the projections of the cooling member and the coil on the projection plane perpendicular to the third direction at least partially overlap; each condensation channel is arranged at intervals along the first direction and penetrates along the third direction; the first direction, the second direction, and the third direction are orthogonal to each other.

[0022] Technical solution 17 of technical solution 16: the magnetic circuit part is provided with an iron core, a yoke and an armature, the contact part is provided with a dynamic spring, and the dynamic spring is provided with a contact portion and a connecting portion; the contact group is close to the first side of the coil frame along the third direction; the iron core passes through the coil frame along the first direction, the armature is located at the first end of the coil frame along the first direction and is fixed to the contact portion, and the contact portion is fixed to the moving contact; the yoke is provided with a first arm extending along the first direction and a second arm extending along the third direction, the first arm is fixed to the connecting portion at the second side of the coil frame along the third direction, and the second arm is fixed to the iron core at the second end of the coil frame along the first direction; the cooling part is located on the first side of the coil frame along the third direction; the lead-out terminal of the contact part and the coil terminal of the magnetic circuit part are both provided at the first end of the coil frame along the first direction; the contact part is provided with a static spring assembly, and the static spring assembly is fixed to the static contact and is located on at least one side of the contact group along the second direction.

[0023] Technical solution 18 based on technical solution 1: the magnetic circuit part is provided with a coil frame, an iron core, a yoke and an armature, the contact part is provided with a dynamic spring, and the dynamic spring is provided with a contact portion and a connecting portion; the contact group includes a dynamic contact and a static contact arranged corresponding to each other; the coil is wound on the coil frame and the axis extends along the first direction; the armature and the contact group are both located at the first end of the coil frame along the first direction, and the contact group is also located on the first side of the coil frame along the third direction, the armature is fixedly connected to the contact portion, and the contact portion is fixedly connected to the dynamic contact; the yoke is provided with a first arm extending along the first direction and a first arm extending along the third direction The second arm of the coil frame, the first arm is fixedly connected to the connecting portion at the second side of the coil frame along the third direction, and the second arm is fixedly connected to the iron core at the second end of the coil frame along the first direction; the armature is suitable for driving the contact portion to swing so that the moving contact swings relative to the static contact on a plane perpendicular to the second direction and closes or opens with the static contact along the first direction; the two sides of the coil frame along the second direction respectively cooperate with the accommodating parts to form a blocking structure, and the first direction, the second direction and the third direction are orthogonal to each other; the condensation channel is provided at the first end of the coil frame along the first direction and / or the first side or the second side along the third direction.

[0024] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0025] After continuous observation, experimentation, and research, the applicant has learned that the reason why the technical problem of "contact failure caused by condensation and ice on the contact surface in low-temperature environments (such as ambient temperature ≤ -10°C) commonly found in existing technical solutions is that the enameled wire of the coil of the existing relay is wound on the coil frame, and the gaps between the enameled wires will retain or accumulate trace amounts of moisture; during the low-temperature startup phase, the heat generated by the coil after it is energized causes the air in the adjacent cavity to heat up rapidly, forming a large temperature gradient with the contact cavity at ambient temperature. The thermal effect generated by the coil during the energization and excitation process will cause the air temperature in the adjacent area to rise significantly. This temperature rise process causes the gas in the coil cavity to expand due to heat, forming a dynamic pressure gradient between the gas in the coil cavity and the contact cavity at a low temperature and without contact conduction. Driven by this pressure, the air medium containing gaseous moisture will produce directional convection along the internal channel of the relay, causing the water vapor to undergo phase change and condense on the contact surface with a lower temperature. As the relay continues to operate, this cycle of water vapor migration and condensation will cause the liquid water film on the contact surface to continue to thicken. The liquid water in the contact gap will undergo a solidification phase change, forming an ice crystal layer with insulating properties, causing the contacts to be unable to contact and conduct due to the ice layer, ultimately causing relay contact failure.

[0026] In Technical Solution 1, the condensation channel refers to a specifically structured channel provided within the airflow path leading to the contact group within the relay. This channel can utilize its own structure (e.g., increasing the contact area with the airflow), material properties, and / or heat exchange with the environment to reduce the temperature of the airflow passing through the channel to below the dew point, thereby causing the water vapor contained in the airflow to condense and precipitate. The condensation channel can thus condense water vapor in the airflow in advance, reducing the humidity of the air entering the contact area and preventing condensation and ice from forming directly on the contact surfaces before contact, thus ensuring contact continuity. Furthermore, it can avoid problems such as reduced insulation between contacts, short circuits, oxidative corrosion, and arcing anomalies caused by condensation, thereby improving the reliability and lifespan of the relay.

[0027] In technical solution two, the airflow is condensed by a cooling element. In actual applications, materials with better thermal conductivity or components with better heat exchange with the environment can be selected as cooling elements, which is more conducive to maintaining the cooling element at a lower temperature to promote condensation of the airflow in the condensation channel and improve condensation efficiency.

[0028] In technical solution three, since the container is easy to exchange heat with the outside world, the container has a lower temperature, and the airflow is easy to condense on the inner wall of the container, and the cooling part is a cooling coating provided on the inner surface of the container, which is more conducive to the cooling coating and the container to form a "heat dissipation-condensation" composite interface, improve the consistency of heat exchange, reduce the risk of local high humidity, and is more conducive to keeping the cooling part at a lower temperature to promote the condensation of the airflow on the condensation interface of the cooling part. In addition, the cooling coating can be integrated with the container without the need for an additional cooling part, which is more conducive to reducing the volume of the relay and the cost of modifying the relay is low.

[0029] In technical solution four, the structure of the relay body (such as the yoke and armature) is fully utilized to cooperate with the condensation interface of the cooling part to form a condensation channel, which can guide the airflow to condense on the condensation interface. When the condensation channel formed on the outer surface of the relay body is made of metal, it can also promote the condensation of the airflow on the outer surface of the relay.

[0030] In technical solution five, the armature, yoke and movable spring are all made of metal, and the condensation interface of the cooling part is at least partially spaced apart from the outer surface of at least one of the movable spring, armature and yoke, which can promote the condensation of airflow on at least one of the movable spring, armature and yoke, increase the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensed airflow, and reducing the air humidity in the contact area.

[0031] In technical solution six, the condensation channel extends at least partially along the first direction and is located on the second side of the coil frame along the third direction. The condensation channel also extends at least partially along the third direction and is located at the first end of the coil frame along the first direction. The path of the condensation channel is longer, and the structural setting of the condensation channel allows the airflow to first move away from the contact group in the first direction section of the condensation channel and achieve initial cooling and condensation, and then undergo secondary cooling and condensation in the third direction section. Secondary dehumidification is performed before the airflow finally enters the contact area to intercept residual water vapor, which is more conducive to promoting the condensation of the airflow before migrating to the contact group, thereby reducing the water vapor content around the contact group.

[0032] In Technical Solution 7, the airflow is intercepted by the airflow reversing structure as it flows from the coil bobbin along the second side of the third direction toward the contact assembly, condensing on the first wall of the accommodating member. This arrangement further facilitates condensation of the airflow before it reaches the contact assembly. This arrangement also fully utilizes the space between the first wall of the accommodating member and the first end of the relay body in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure were located on the side wall of the accommodating member, the space between the side wall of the accommodating member and the relay body would be narrow, which would require an increase in the volume of the relay. Therefore, protruding the airflow reversing structure from the first wall fully utilizes the operating space of the dynamic spring and armature, further reducing the volume of the relay. Because the condensation channel also extends at least partially along the third direction and is located at the first end of the coil bobbin in the first direction, a cooling element is provided on the first wall. That is, as the airflow flows along the condensation channel toward the contact assembly, the airflow reversing structure forces the airflow to slow down and approach the cooling element. The cooling element then drives a phase change due to the temperature difference. The combined effect of these two factors greatly increases the water vapor interception efficiency, achieving rapid water vapor interception and achieving higher condensation efficiency in the condensation channel.

[0033] In technical solution eight, the condensation interface of the cooling part avoids the contact group and is spaced relative to the movable spring, the first arm and the armature, so that the condensation channel is located on the second side of the coil frame along the third direction and the first end along the first direction, ensuring that the airflow is fully condensed in the condensation channel before reaching the contact group.

[0034] In Technical Solution 9, because the container easily exchanges heat with the outside world and maintains a relatively low temperature, an airflow reversing structure protrudes from the channel wall of the condensation channel. The airflow reversing structure is used to increase the contact area between the airflow and the container, which can promote the condensation of water vapor on the inner wall of the container. The airflow reversing structure is at least partially spaced from the outer surface of the relay body to form a condensation channel. This fully utilizes the structure of the relay body (such as the yoke and armature) to guide the airflow through the airflow reversing structure, thereby promoting the condensation of water vapor on the inner wall of the container. When the outer surface of the relay body forming the condensation channel is made of metal, it can also promote the condensation of airflow on the outer surface of the relay.

[0035] In Technical Solution 10, the first wall avoids the contact group and is spaced relative to the outer surface of the relay to cooperate with it to form a condensation channel. The airflow reversing structure is protruding from the first wall. This arrangement allows the airflow to be intercepted by the airflow reversing structure as it flows toward the contact group, condensing on the first wall of the container, which is more conducive to promoting condensation of the airflow before migrating to the contact group. This arrangement also fully utilizes the space between the first wall of the container and the first end of the relay body in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure is provided on the side wall of the container, due to the narrow space between the side wall of the container and the relay body, the installation of the airflow reversing structure would require an increase in the volume of the relay. Therefore, the airflow reversing structure protruding from the first wall can fully utilize the operating space of the dynamic spring and the armature, which is more conducive to reducing the volume of the relay.

[0036] In technical solution eleven, the airflow reversing structure includes at least two condensation sub-channels arranged at intervals along the third direction and extending along the second direction, which can increase the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensation airflow, and reducing the air humidity in the contact area.

[0037] In Technical Solution 12, the airflow reversing structure forms a labyrinthine, staggered flow path, forcing the airflow to make multiple turns, extending the airflow path, and thereby increasing the contact area between the airflow and the first wall of the accommodating component. The projections of adjacent first protrusions along the third direction on a projection plane perpendicular to the third direction are staggered by at least 50%. A greater staggering of adjacent first protrusions, compared to a greater overlap, further helps prevent excessive resistance in the airflow reversing structure, which would cause the airflow to flow primarily along the gaps between the free ends of the first protrusions and the dynamic spring, rather than through the gaps between adjacent first protrusions. This, in turn, facilitates airflow through the airflow reversing structure, increasing the contact area between the airflow and the first wall. Furthermore, the airflow reversing structure also increases the structural strength of the first wall.

[0038] In technical solution thirteen, the channel wall of the condensation channel is also formed on the part of the contact portion avoiding the contact group and on the surface of the armature facing the first wall. The armature and the movable spring are both made of metal, which can promote the condensation of the airflow on the contact portion of the armature and the movable spring, thereby intercepting more water vapor.

[0039] In Technical Solution 14, the static spring assembly, a metal component, forms a physical barrier between the contact assembly and the coil by cooperating with the coil bobbin, or with both the coil bobbin and the housing. This forces hot, humid air to detour through a pre-defined condensation channel, thereby promoting condensation. The static spring assembly's metal surface, due to its low heat conduction temperature, cools the air flowing around it, causing water vapor to condense on the surface of the static spring assembly. This allows the static spring assembly to condense water vapor before it reaches the contact assembly, reducing humidity in the contact area.

[0040] In Technical Solution 15, the cooling element is located radially outward from the coil and contacts both ends of the coil former along the first direction. This element intercepts water vapor diffusing in the radial direction of the coil and promotes condensation on the cooling element. Furthermore, a separate cooling element is easier to process and maintain at a lower temperature, resulting in better airflow condensation. The cooling element is provided with a number of condensation channels spaced apart and extending therethrough. The presence of multiple condensation channels increases the condensation area, intercepting more water vapor generated by the coil heat.

[0041] In technical solution sixteen, the projections of the cooling element and the coil on the projection plane perpendicular to the third direction at least partially overlap, which is more conducive to the cooling element to intercept the airflow. Combined with the fact that the condensation channels are arranged at intervals along the first direction and pass through along the third direction, the contact area between the airflow and the cooling element can be increased, thereby promoting the condensation of the airflow on the cooling element.

[0042] In Technical Solution 17, the cooling element is located on the first side of the coil bobbin along the third direction, allowing the cooling element and the yoke to respectively block the airflow from the coil from migrating to the contact group. The metal structure of the yoke also promotes condensation. The contact lead terminals and the coil terminals of the magnetic circuit are both located at the first end of the coil bobbin along the first direction. This arrangement facilitates the installation of the cooling element and allows the relay to be mounted in an inverted manner. When the first direction is vertical, the hot air flows upward, making it less likely to migrate to the contact group at the bottom.

[0043] In Technical Solution 18, the coil cooperates with the accommodating parts on both sides along the second direction to form a blocking structure, which constrains the airflow in the second direction and forces the airflow to migrate along the first and third directions. Combined with the condensation channel provided at the first end of the coil frame along the first direction and / or the first side or second side along the third direction, the setting of the blocking structure can force the airflow to migrate toward the condensation channel, thereby inhibiting the migration of water vapor in different directions to the contact group at multiple positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 Schematic diagram of the relay in Example 1 of the present invention;

[0046] Figure 2 is a schematic diagram of a container according to embodiment 1 of the present invention;

[0047] Figure 3 A top view of the relay according to embodiment 1 of the present invention;

[0048] Figure 4 for Figure 3 Cross-sectional view in the AA direction;

[0049] Figure 5 4 is a cross-sectional view of a relay according to embodiment 2 of the present invention;

[0050] Figure 6 A bottom view of a receiving element according to embodiment 2 of the present invention;

[0051] Figure 7 4 is a cross-sectional view of a relay according to embodiment 3 of the present invention;

[0052] Figure 8 Schematic diagram of a hidden housing of a relay according to embodiment 4 of the present invention;

[0053] Figure 9 2 is a cross-sectional view of an embodiment of the present invention.

[0054] Description of main reference numerals:

[0055] Container 10; first wall 11; second connecting block 12; bottom plate 13; relay body 100; magnetic circuit portion 20; coil frame 21; first retaining wall 211; second retaining wall 212; winding shaft 213; accommodating chamber 214; first connecting block 215; coil 22; coil terminal 23; iron core 24; yoke 25; first arm 251; second arm 252; armature 26; movable spring 30; connecting portion 31; movable lead terminal 311; contact portion 32; bending portion 33; static spring assembly 40; static spring 41; static lead terminal 42; contact group 50; movable contact 51; static contact 52; cooling member 60; condensation interface 61; condensation channel 01; condensation sub-channel 011; airflow reversing structure 70; first protrusion 71. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0057] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0058] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0059] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0060] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0061] In the claims and the specification, except in the embodiments, the terms "first direction," "second direction," and "third direction" simply refer to the fact that a feature having one of these directions is perpendicular to a feature having another direction, and do not require that the features be implemented in accordance with the "first direction," "second direction," and "third direction" described in the embodiments. In this embodiment, the first direction is perpendicular to both the second direction and the third direction, and the first, second, and third directions are orthogonal. For example, the first direction can be divided into up and down, the second direction can be divided into left and right, and the third direction can be divided into front and back.

[0062] Example 1

[0063] See also Figure 1-4 , Figure 1-4 A relay is shown, comprising an accommodating member 10 , a relay body 100 and a cooling member 60 . The relay body 100 comprises a magnetic circuit portion 20 and a contact portion.

[0064] See also Figure 1-2 The container 10 is a box-shaped structure as a whole, and the second end of the container 10 along the first direction ( Figure 1The accommodating member 10 is fixedly connected to the second retaining wall 212 of the coil frame 21 below to form a cavity for accommodating the coil 22 and the contact group 50. The accommodating member 10 is provided with a first wall 11 opposite to the first end of the coil frame 21 below, and the first wall 11 is provided with a second connecting block 12 suitable for overlapping with the first connecting block 215 below on both sides along the second direction.

[0065] See also Figure 1 and Figure 4 The magnetic circuit portion 20 includes a coil frame 21, a coil 22, a coil terminal 23, an iron core 24, a yoke 25 and an armature 26. The coil frame 21 includes a first retaining wall 211, a second retaining wall 212 and a winding shaft 213 located between the first retaining wall 211 and the second retaining wall 212. The first retaining wall 211 is arranged toward the first wall 11 of the accommodating member 10. Figure 1 A first retaining wall 211 protrudes from a first side of the coil bobbin 21 along the third direction to form an accommodating cavity 214 for accommodating the contact assembly 50 described below. Step-shaped first connecting blocks 215 are formed on either side of the first retaining wall 211 along the second direction. The first connecting blocks 215 form steps along the third direction. The two first connecting blocks 215 overlap the two second connecting blocks 12, respectively, so that the two sides of the coil bobbin 21 along the second direction cooperate with the accommodating member 10 to form a blocking structure.

[0066] Still see Figure 4 The coil 22 is wound on the winding shaft 213 of the coil frame 21 and its axis extends along the first direction. The coil terminal 23 is electrically connected to the coil 22 and extends out of the lower end of the coil frame 21. The iron core 24 passes through the coil frame 21 along the first direction. The yoke 25 is L-shaped and has a first arm 251 extending along the first direction and a second arm 252 extending along the third direction. The first arm 251 is on the second side of the coil frame 21 along the third direction ( Figure 4 The second arm 252 is fixed to the connecting portion 31 of the movable spring 30 below, and the second arm 252 is fixed to the second end of the coil frame 21 along the first direction ( Figure 4 The armature 26 is located at the first end ( Figure 4 The right end of the armature 26 abuts against the upper end of the first arm 251. The armature 26 swings on a plane perpendicular to the second direction to attract or move away from the upper end of the iron core 24.

[0067] The contact portion includes a dynamic spring 30, a static spring assembly 40 and at least one contact group 50, see Figure 4 The dynamic spring 30 includes a connecting portion 31, a contact portion 32, and a bending portion 33 that are connected to each other as a whole. The connecting portion 31 extends along the first direction, the contact portion 32 extends along the third direction, and the connecting portion 31 is located on the second side of the coil frame 21 along the third direction ( Figure 4The connecting portion 31 extends from the first end of the coil bobbin 21 along the first direction and is fixedly connected to the armature 26 and abuts against the upper surface of the armature 26. The contact portion 32 also extends into the accommodating cavity 214 and is fixedly connected to the movable contact 51 described below. The bent portion 33 connects the upper end of the connecting portion 31 and the right end of the contact portion 32 and bends upward. The armature 26 is adapted to drive the contact portion 32 to swing, thereby closing or opening the movable contact 51 and the static contact 52 described below along the first direction.

[0068] See also Figure 1 and Figure 4 , the static spring assembly 40 is located on the first side of the coil frame 21 along the third direction, the static spring assembly 40 is fixedly connected to the static contact 52 and cooperates with the coil frame 21 to form a blocking structure. In this embodiment, the static spring assembly 40 contacts the two ends of the coil frame 21 along the first direction, that is, it contacts the first blocking wall 211 and the second blocking wall 212. The projections of the static spring assembly 40 and the coil 22 on the projection plane perpendicular to the third direction at least partially overlap. However, it should be understood that in other embodiments, the static spring assembly 40 can also cooperate with the coil frame 21 and the accommodating part 10 to form a blocking structure at the same time. At this time, the side wall of the accommodating part 10 close to the first side of the coil frame 21 along the third direction may protrude and be provided with a protrusion that abuts against the static spring assembly 40. In this embodiment, see Figure 1 The static spring assembly 40 includes two static springs 41 spaced apart along the second direction. The bottom ends of the static springs 41 extend beyond the second retaining wall 212 to form static lead terminals 42. The upper ends of the static springs 41 extend into the accommodating cavity 214 and are fixedly connected to the static contact 52. The dynamic lead terminals 311 of the dynamic spring 30 and the static lead terminals 42 of the static spring 41 form the lead terminals of the contact portion. It should be understood that the static spring assembly 40 may alternatively include only one static spring.

[0069] Still see Figure 1 and Figure 4 The contact group 50 is located at the first end of the coil frame 21 along the first direction and close to the first side of the coil frame 21 along the third direction. The contact group 50 includes corresponding movable contacts 51 and static contacts 52. The contact group 50 is located in the accommodating cavity 214. In this embodiment, there are two contact groups 50, and the two contact groups 50 are arranged at intervals along the second direction. The movable contact 51 swings relative to the static contact 52 on a plane perpendicular to the second direction and is closed or disconnected with the static contact 52 through the motion component along the first direction.

[0070] In this embodiment, at least one condensation channel 01 for condensing the passing airflow is provided in at least one airflow passage leading to the contact group 50. The condensation channel 01 refers to a specific structural channel provided in the airflow passage leading to the contact group 50 in the relay, which can utilize the channel's own structure (such as increasing the contact area with the airflow), material properties and / or heat exchange with the environment to reduce the temperature of the airflow flowing through the channel to below the dew point, thereby promoting the condensation and precipitation of water vapor contained in the airflow. In this embodiment, the condensation channel 01 is provided at the first end of the coil frame 21 along the first direction and / or the first side or second side along the third direction. In this embodiment, the cooling member 60 is provided with a condensation interface 61, and the condensation interface 61 forms the channel wall of the condensation channel 01. In this embodiment, see Figure 4 The cooling member 60 is a cooling coating provided on the inner surface of the receiving member 10. The condensation interface 61 of the cooling member 60 is at least partially spaced apart from and opposed to the outer surface of the relay body 100 to cooperate therewith to form the condensation channel 01. For example, the condensation interface 61 of the cooling member 60 is at least partially spaced apart from and opposed to the outer surface of at least one of the movable spring 30, the armature 26, and the yoke 25. In this embodiment, the condensation channel 01 is located at the first end of the coil bobbin 21 along the first direction and on the second side along the third direction. The condensation channel 01 extends at least partially along the first direction and is located on the second side of the coil bobbin 21 along the third direction. The condensation channel 01 also extends at least partially along the third direction and is located at the first end of the coil bobbin 21 along the first direction. The condensation interface 61 of the cooling member 60 avoids the contact group 50 and is spaced apart from and opposed to the movable spring 30, the first arm 251, and the armature 26.

[0071] In this embodiment, the condensation channel 01 can condense water vapor in the air flow in advance, reduce the air humidity entering the contact area, avoid direct condensation and ice on the contact surface before the contacts make contact, ensure contact conduction, and avoid problems such as insulation degradation between contacts, short circuit, oxidation corrosion, and arc abnormality caused by condensation, thereby improving the reliability and life of the relay.

[0072] In this embodiment, the airflow is condensed by the cooling member 60. In actual applications, a material with better thermal conductivity or a component with better heat exchange with the environment can be selected as the cooling member 60, which is more conducive to maintaining the cooling member 60 at a lower temperature to promote condensation of the airflow in the condensation channel 01 and improve the condensation efficiency.

[0073] In this embodiment, since the container 10 is easy to exchange heat with the outside world, the container 10 has a lower temperature, and the airflow is easy to condense on the inner wall of the container 10, and the cooling member 60 is a cooling coating provided on the inner surface of the container 10, which is more conducive to the cooling coating and the container 10 to form a "heat dissipation-condensation" composite interface, improve the consistency of heat exchange, reduce the risk of local high humidity, and is more conducive to keeping the cooling member 60 at a lower temperature to promote the condensation of the airflow on the condensation interface 61 of the cooling member 60. In addition, the cooling coating can be integrated with the container 10 without the need to additionally set up the cooling member 60, which is more conducive to reducing the volume of the relay and the cost of modifying the relay is low.

[0074] In this embodiment, the structure of the relay body 100 (such as the yoke 25 and the armature 26) is fully utilized to cooperate with the condensation interface 61 of the cooling member 60 to form a condensation channel 01, which can guide the airflow to condense on the condensation interface 61. When the outer surface of the relay body 100 forming the condensation channel 01 is made of metal, it can also promote the condensation of the airflow on the outer surface of the relay.

[0075] In this embodiment, the armature 26, the yoke 25 and the movable spring 30 are all made of metal, and the condensation interface 61 of the cooling member 60 is at least partially spaced relative to the outer surface of at least one of the movable spring 30, the armature 26 and the yoke 25, which can promote the condensation of the airflow on at least one of the movable spring 30, the armature 26 and the yoke 25, thereby increasing the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensed airflow, and reducing the air humidity in the contact area.

[0076] In this embodiment, the condensation channel 01 extends at least partially along the first direction and is located on the second side of the coil frame 21 along the third direction. The condensation channel 01 also extends at least partially along the third direction and is located at the first end of the coil frame 21 along the first direction. The path of the condensation channel 01 is longer, and the structural setting of the condensation channel 01 allows the airflow to first move away from the contact group 50 in the first direction section of the condensation channel 01 and achieve initial cooling and condensation, and then undergo secondary cooling and condensation in the third direction section. Secondary dehumidification is performed before the airflow finally enters the contact area to intercept residual water vapor, which is more conducive to promoting the condensation of the airflow before migrating to the contact group 50, thereby reducing the water vapor content around the contact group 50.

[0077] In this embodiment, the condensation interface 61 of the cooling member 60 avoids the contact group 50 and is spaced relative to the movable spring 30, the first arm 251 and the armature 26, so that the condensation channel 01 is located on the second side of the coil frame 21 along the third direction and the first end along the first direction, ensuring that the airflow is fully condensed in the condensation channel 01 before reaching the contact group 50.

[0078] In this embodiment, the static spring assembly 40, a metal component, cooperates with the coil bobbin 21 or with both the coil bobbin 21 and the accommodating member 10 to form a physical barrier between the contact assembly 50 and the coil 22. This forces the hot, humid air to detour through the pre-defined condensation channel 01, thereby promoting condensation. Due to the low heat conduction temperature of the metal surface of the static spring assembly 40, the air flowing around it is cooled, causing water vapor to condense and precipitate on the surface of the static spring assembly 40.

[0079] In this embodiment, the coil 22 forms a blocking structure with the accommodating part 10 on both sides along the second direction, constraining the airflow in the second direction and forcing the airflow to migrate along the first and third directions. Combined with the condensation channel 01 provided at the first end of the coil frame 21 along the first direction and / or the first side or second side along the third direction, the setting of the blocking structure can force the airflow to migrate toward the condensation channel 01, thereby inhibiting the migration of water vapor in different directions to the contact group 50 at multiple positions.

[0080] Example 2

[0081] The structure of the embodiment is basically the same as that of embodiment 1, except that Figure 5 The first wall 11 is provided with an airflow reversing structure 70 protruding from the second side of the coil frame 21 along the third direction. The airflow reversing structure 70 is used to increase the contact area between the airflow and the first wall 11. Figure 6 The airflow reversing structure 70 includes at least two condensation sub-channels 011 arranged at intervals along the third direction and extending along the second direction. The condensation sub-channels 011 are formed between first protrusions 71 opposite to each other. The airflow reversing structure 70 includes a plurality of first protrusions 71 protruding from the first wall 11 along the first direction and arranged at intervals along the third direction and extending along the second direction. The projections of adjacent first protrusions 71 along the third direction on the projection surface perpendicular to the third direction at least partially overlap and are at least partially staggered by 50%.

[0082] In this embodiment, the airflow is intercepted by the airflow reversing structure 70 in the process of flowing from the outside of the first arm 251 of the yoke 25 to the contact group 50, and condenses on the first wall 11 of the container 10, which is more conducive to promoting the condensation of the airflow before migrating to the contact group 50; this arrangement also makes full use of the space between the first wall 11 of the container 10 and the first end of the relay body 100 in the first direction without increasing the height of the relay in the first direction. If the airflow reversing structure 70 is set on the side wall of the container 10, due to the narrow space between the side wall of the container 10 and the relay body 100, setting the airflow reversing structure 70 requires increasing the volume of the relay. Therefore, the airflow reversing structure 70 is protruded on the first wall 11, which can make full use of the action space of the dynamic spring 30 and the armature 26, which is more conducive to reducing the volume of the relay. Since the condensation interface 61 of the cooling member 60 avoids the contact group 50 and is spaced apart from the movable spring 30, the first arm 251 and the armature 26, a cooling member 60 is provided on the first wall 11. That is to say, when the airflow is passing along the condensation channel 01 to the contact group 50, the airflow reversing structure 70 forces the airflow to slow down and approach the cooling member 60, and the cooling member 60 drives the phase change through the temperature difference. The superposition of the two greatly increases the water vapor interception efficiency, and together realizes the rapid interception of water vapor, so that the airflow has a higher condensation efficiency in the condensation channel 01.

[0083] In this embodiment, the airflow reversing structure includes at least two condensation sub-channels 011 arranged at intervals along the third direction and extending along the second direction, which can increase the condensation area, thereby increasing the condensation efficiency and the amount of water vapor in the condensation airflow, and reducing the air humidity in the contact area.

[0084] In this embodiment, the airflow reversing structure 70 forms a labyrinthine, staggered flow path, forcing the airflow to make multiple turns, extending the airflow path, and thereby increasing the contact area between the airflow and the first wall 11 of the accommodating member 10. The projections of adjacent first protrusions 71 along the third direction on a projection plane perpendicular to the third direction are staggered by at least 50%. A greater staggering of adjacent first protrusions 71, compared to a greater overlap, further helps prevent excessive resistance from the airflow reversing structure 70, which would cause the airflow to flow primarily along the gaps between the free ends of the first protrusions 71 and the dynamic spring 30, rather than through the gaps between adjacent first protrusions 71. This, in turn, facilitates airflow through the airflow reversing structure 70, increasing the contact area between the airflow and the first wall 11. Furthermore, the provision of the airflow reversing structure 70 can also enhance the structural strength of the first wall 11.

[0085] Example 3

[0086] The structure of Example 3 is basically the same as that of Example 2, except that Figure 7In this embodiment, the relay does not include the cooling member 60, and the condensation channel 01 is only provided at the first end of the coil frame 21 along the first direction. An airflow reversing structure 70 is protruded from the channel wall of the condensation channel 01. The airflow reversing structure 70 is used to increase the contact area between the airflow and the accommodating member 10; the airflow reversing structure 70 is at least partially spaced apart from the outer surface of the relay body 100 to cooperate with it to form the condensation channel 01. The airflow reversing structure 70 is protruded from the first wall 11. The channel wall of the condensation channel 01 is also formed on the portion of the contact portion 32 that avoids the contact group 50 and the surface of the armature 26 facing the first wall 11; the airflow reversing structure 70 is close to the first arm 251 of the yoke 25 along the third direction.

[0087] In this embodiment, because the accommodating member 10 easily exchanges heat with the outside world and maintains a relatively low temperature, an airflow reversing structure 70 protrudes from the channel wall of the condensation channel 01. The airflow reversing structure 70 is used to increase the contact area between the airflow and the accommodating member 10, thereby promoting the condensation of water vapor on the inner wall of the accommodating member 10. The airflow reversing structure 70 is at least partially spaced from and opposed to the outer surface of the relay body 100 to cooperate with it to form the condensation channel 01. This fully utilizes the structure of the relay body 100 (such as the yoke 25 and the armature 26) to guide the airflow through the airflow reversing structure 70, thereby promoting the condensation of water vapor on the inner wall of the accommodating member 10. When the portion of the outer surface of the relay body 100 that forms the condensation channel 01 is made of metal, it can also promote the condensation of airflow on the outer surface of the relay.

[0088] In this embodiment, the first wall 11 avoids the contact assembly 50 and is spaced relative to the outer surface of the relay to cooperate with it to form a condensation channel 01. The airflow reversing structure 70 is protruding from the first wall 11. This arrangement allows the airflow to be intercepted by the airflow reversing structure 70 as it flows toward the contact assembly 50, condensing on the first wall 11 of the accommodating member 10, further promoting condensation of the airflow before it migrates to the contact assembly 50. This arrangement also fully utilizes the space between the first wall 11 of the accommodating member 10 and the first end of the relay body 100 in the first direction, without increasing the height of the relay in the first direction. If the airflow reversing structure 70 were disposed on the side wall of the accommodating member 10, the space between the side wall of the accommodating member 10 and the relay body 100 would be narrow, and the airflow reversing structure 70 would increase the size of the relay. Therefore, protruding the airflow reversing structure 70 on the first wall 11 can fully utilize the operating space of the dynamic spring 30 and the armature 26, further reducing the size of the relay.

[0089] In this embodiment, the channel wall of the condensation channel 01 is also formed on the part of the contact portion 32 that avoids the contact group 50 and on the surface of the armature 26 facing the first wall 11. The armature 26 and the movable spring 30 are both made of metal, which can promote the condensation of airflow on the contact portion 32 of the armature 26 and the movable spring 30, thereby intercepting more water vapor.

[0090] Example 4

[0091] The structure of Example 4 is basically the same as that of Example 1, except that Figure 8-9 :

[0092] First, the cooling member 60 is located radially outward from the coil 22 and contacts the first retaining wall 211 and the second retaining wall 212 at both ends of the coil frame 21 along the first direction. The cooling member 60 is located on the first side of the coil frame 21 along the third direction. The cooling member 60 is provided with a condensation channel 01. The cooling member 60 is a grid plate structure and is provided with a plurality of condensation channels 01 spaced apart and extending through the cooling member 60 along the first direction. The projections of the cooling member 60 and the coil 22 on a projection plane perpendicular to the third direction at least partially overlap. In this embodiment, the condensation channels 01 extend along the third direction.

[0093] Second, the accommodating member 10 includes a base plate 13 and a housing (not shown). The base plate 13 is located at a first end of the coil frame 21 along the first direction and, together with the first retaining wall 211, forms a space for the contact portion 32 of the movable spring 30 to move. The housing is open at a first end (upper end) along the first direction. The housing is fixedly connected to the base plate 13 and forms a cavity for accommodating the coil 22 and the contact assembly 50.

[0094] Third, the lead terminal of the contact portion and the coil terminal 23 of the magnetic circuit portion 20 are both provided at the first end of the coil frame 21 along the first direction and extend through the bottom plate 13;

[0095] Fourth, the static spring assembly is fixedly connected to the static contact 52 and is located on at least one side of the contact group 50 along the second direction. In this embodiment, preferably, the two static springs 41 of the static spring assembly are respectively located on both sides of the contact group 50 along the second direction.

[0096] In this embodiment, the condensation channel 01 is located on a first side of the coil frame 21 along the third direction.

[0097] In this embodiment, the cooling element 60 is located radially outward from the coil 22 and contacts both ends of the coil frame 21 along the first direction. The cooling element 60 intercepts water vapor diffused in the radial direction of the coil 22 and promotes condensation of the water vapor on the cooling element 60. Furthermore, the separate cooling element 60 is easier to manufacture and maintain at a lower temperature, thereby achieving a better airflow condensation effect.

[0098] In this embodiment, the cooling member 60 is provided with a plurality of condensation channels 01 spaced apart and penetrating along the first direction. The provision of a plurality of condensation channels 01 can increase the condensation area and intercept more water vapor generated by the heat of the coil 22 .

[0099] In this embodiment, the projections of the cooling member 60 and the coil 22 on the projection plane perpendicular to the third direction at least partially overlap, which is more conducive to the cooling member 60 intercepting the airflow. Combined with the condensation channel 01 running through the third direction, the contact area between the airflow and the cooling member 60 can be increased, thereby promoting the condensation of the airflow on the cooling member 60.

[0100] In this embodiment, the cooling element 60 is located on the first side of the coil bobbin 21 along the third direction. This allows the cooling element 60 and the yoke 25 to respectively block the airflow from the coil 22 from migrating to the contact assembly 50. The metal structure of the yoke 25 also promotes condensation of the airflow. The lead terminals of the contact portion and the coil terminals 23 of the magnetic circuit portion 20 are both located at the first end of the coil bobbin 21 along the first direction. This arrangement facilitates the installation of the cooling element 60 and allows the relay to be mounted in an inverted manner. When the first direction is vertical, the hot air flows upward, making it less likely to migrate to the contact assembly 50 at the bottom.

[0101] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. A relay comprising a relay body (100) and a housing (10), wherein the relay body (100) comprises a magnetic circuit portion (20) and a contact portion, wherein the magnetic circuit portion (20) comprises a coil (22), and the contact portion comprises at least one contact group (50), wherein both the coil (22) and the contact group (50) are housed in the housing (10), wherein: At least one air flow passage leading to the contact group (50) is provided with at least one condensation channel (01) for condensing the air flow passing therethrough.

2. A relay as claimed in claim 1, characterized in that: The relay is provided with a cooling member (60), the cooling member (60) is provided with a condensation interface (61), and the condensation interface (61) forms a channel wall of the condensation channel (01).

3. A relay as claimed in claim 2, characterized in that: The cooling member (60) is a cooling coating provided on the inner surface of the accommodating member (10).

4. A relay as claimed in claim 3, characterized in that: The condensation interface (61) of the cooling element (60) is at least partially spaced apart from the outer surface of the relay body (100) to form a condensation channel (01) therewith.

5. A relay as claimed in claim 4, characterized in that: The magnetic circuit portion (20) further includes an armature (26) and a yoke (25), the contact portion includes a movable spring (30), and the condensation interface (61) of the cooling member (60) is at least partially spaced from and opposed to the outer surface of at least one of the movable spring (30), the armature (26) and the yoke (25).

6. A relay as claimed in claim 5, characterized in that: The magnetic circuit portion (20) includes a coil frame (21), the coil (22) is wound on the coil frame (21) and the axis extends along the first direction, the contact group (50) is located at the first end of the coil frame (21) along the first direction and close to the first side of the coil frame (21) along the third direction, the contact group (50) includes correspondingly arranged movable contacts (51) and static contacts (52), the movable contacts (51) swing relative to the static contacts (52) on a plane perpendicular to the second direction and are closed or disconnected with the static contacts (52) through a motion component along the first direction; the condensation channel (01) at least partially extends along the first direction and is located on the second side of the coil frame (21) along the third direction, and the condensation channel (01) also at least partially extends along the third direction and is located at the first end of the coil frame (21) along the first direction; the first direction, the second direction, and the third direction are orthogonal to each other.

7. A relay as claimed in claim 6, characterized in that: The accommodating member (10) is provided with a first wall (11) opposite to the first end of the coil frame (21); an airflow reversing structure (70) is protruded from the first wall (11) and is close to the second side of the coil frame (21) along the third direction, and the airflow reversing structure (70) is used to increase the contact area between the airflow and the first wall (11).

8. A relay as claimed in claim 7, characterized in that: The magnetic circuit portion (20) further includes an iron core (24); the movable spring (30) is provided with a contact portion (32) and a connecting portion (31); the iron core (24) penetrates the coil frame (21) along a first direction; the armature (26) is located at a first end of the coil frame (21) along the first direction and is fixedly connected to the contact portion (32); and the contact portion (32) is fixedly connected to the movable contact (51); The yoke (25) is provided with a first arm (251) extending along a first direction and a second arm (252) extending along a third direction, the first arm (251) is fixedly connected to the connecting portion (31) at the second side of the coil frame (21) along the third direction, and the second arm (252) is fixedly connected to the iron core (24) at the second end of the coil frame (21) along the first direction; the condensation interface (61) of the cooling member (60) avoids the contact group (50) and is spaced relative to the movable spring (30), the first arm (251) and the armature (26).

9. A relay as claimed in claim 1, characterized in that: An airflow reversing structure (70) is protruding from a channel wall of the condensation channel (01), and the airflow reversing structure (70) is used to increase the contact area between the airflow and the accommodating component (10); the airflow reversing structure (70) is at least partially spaced from the outer surface of the relay body (100) to cooperate with it to form the condensation channel (01).

10. A relay as claimed in claim 9, characterized in that: The magnetic circuit portion (20) is further provided with a coil frame (21), the coil (22) is wound on the coil frame (21) and the axis thereof extends along a first direction, the contact group (50) is located at a first end of the coil frame (21) along the first direction and close to a first side of the coil frame (21) along a third direction, the contact group (50) comprises a movable contact (51) and a stationary contact (52) arranged corresponding to each other, the movable contact (51) swings relative to the stationary contact (52) on a plane perpendicular to the second direction and is closed or disconnected with the stationary contact (52) by a motion component along the first direction; the first direction, the second direction and the third direction are orthogonal; the accommodating member (10) is provided with a first wall (11) opposite to the first end of the coil frame (21), and the airflow reversing structure (70) is protruding from the first wall (11).

11. A relay according to any one of claims 7 to 8 or 10, characterized in that: The airflow reversing structure (70) comprises at least two condensation sub-channels (011) arranged at intervals along the third direction and extending along the second direction.

12. A relay as claimed in claim 11, characterized in that: The airflow reversing structure (70) comprises a plurality of first protrusions (71) protruding from the first wall (11) along the first direction and spaced apart along the third direction and extending along the second direction; the condensation sub-channel (011) is formed between the first protrusions (71) opposite to each other; and the projections of the adjacent first protrusions (71) along the third direction on a projection plane perpendicular to the third direction at least partially overlap and are at least partially staggered by 50%.

13. A relay as claimed in claim 10, characterized in that: The magnetic circuit portion (20) is provided with an iron core (24), an armature (26) and a yoke (25); the contact portion is provided with a movable spring (30); the movable spring (30) is provided with a contact portion (32) and a connecting portion (31); the iron core (24) passes through the coil frame (21) along a first direction; the armature (26) is located at a first end of the coil frame (21) along the first direction and is fixedly connected to the contact portion (32); the contact portion (32) is fixedly connected to the movable contact (51); the yoke (25) is provided with a first arm (251) extending along the first direction and a second arm (252) extending along a third direction; the first arm (251) is provided at a position adjacent to the coil frame (21); The coil frame (21) is fixedly connected to the connecting portion (31) at a second side along the third direction, and the second arm (252) is fixedly connected to the iron core (24) at a second end of the coil frame (21) along the first direction; the armature (26) is suitable for driving the contact portion (32) to swing so that the moving contact (51) and the static contact (52) are closed or disconnected along the first direction; the channel wall of the condensation channel (01) is also formed on the portion of the contact portion (32) that avoids the contact group (50) and on the surface of the armature (26) facing the first wall (11); the airflow reversing structure (70) is close to the first arm (251) of the yoke (25) along the third direction.

14. A relay according to any one of claims 6 to 8, 10 or 12, characterized in that: The contact portion further comprises a static spring assembly (40), wherein the static spring assembly (40) is located on a first side of the coil frame (21) along a third direction, the static spring assembly (40) is fixedly connected to the static contact (52) and cooperates with the coil frame (21) or simultaneously cooperates with the coil frame (21) and the accommodating member (10) to form a blocking structure, and the projections of the static spring assembly (40) and the coil (22) on a projection plane perpendicular to the third direction at least partially overlap.

15. A relay as claimed in claim 1, characterized in that: The magnetic circuit portion (20) includes a coil frame (21), the coil (22) is wound on the coil frame (21) and the axis extends along a first direction, and the contact group (50) is located at a first end of the coil frame (21) along the first direction; the relay is provided with a cooling member (60), the cooling member (60) is located radially outside the coil (22) and contacts with both ends of the coil frame (21) along the first direction; the cooling member (60) is provided with a plurality of condensation channels (01) arranged at intervals and passing through.

16. A relay as claimed in claim 15, characterized in that: The contact group (50) includes correspondingly arranged movable contacts (51) and stationary contacts (52), wherein the movable contacts (51) swing relative to the stationary contacts (52) on a plane perpendicular to a second direction and close or open with the stationary contacts (52) along a first direction; the projections of the cooling element (60) and the coil (22) on a projection plane perpendicular to a third direction at least partially overlap; the condensation channels (01) are arranged at intervals along the first direction and penetrate along the third direction; the first direction, the second direction, and the third direction are orthogonal to each other.

17. A relay as claimed in claim 16, characterized in that: The magnetic circuit portion (20) is provided with an iron core (24), a yoke (25) and an armature (26); the contact portion is provided with a movable spring (30); the movable spring (30) is provided with a contact portion (32) and a connecting portion (31); the contact group (50) is close to a first side of the coil frame (21) along a third direction; The iron core (24) passes through the coil frame (21) along a first direction, the armature (26) is located at a first end of the coil frame (21) along the first direction and is fixedly connected to the contact portion (32), and the contact portion (32) is fixedly connected to the moving contact (51); the yoke (25) is provided with a first arm (251) extending along the first direction and a second arm (252) extending along a third direction, the first arm (251) is fixedly connected to the connecting portion (31) at a second side of the coil frame (21) along the third direction, and the second arm (252) is fixedly connected to the iron core (24) at a second end of the coil frame (21) along the first direction; the cooling member (60) is located at a first side of the coil frame (21) along the third direction; The lead-out terminal of the contact portion and the coil terminal (23) of the magnetic circuit portion (20) are both arranged at a first end of the coil frame (21) along a first direction; the contact portion is provided with a static spring assembly (40), and the static spring assembly (40) is fixedly connected to the static contact (52) and is located on at least one side of the contact group (50) along a second direction.

18. The relay according to claim 1, wherein: The magnetic circuit portion (20) is provided with a coil frame (21), an iron core (24), a yoke (25) and an armature (26); the contact portion is provided with a movable spring (30), and the movable spring (30) is provided with a contact portion (32) and a connecting portion (31); the contact group (50) includes a movable contact (51) and a static contact (52) arranged corresponding to each other; the coil (22) is wound on the coil frame (21) and the axis extends along the first direction; the armature (26) and the contact group (50) are both located at the first end of the coil frame (21) along the first direction, and the contact group (50) is also located at the first side of the coil frame (21) along the third direction; the armature (26) is fixedly connected to the contact portion (32), and the contact portion (32) is fixedly connected to the movable contact (51); the The yoke (25) is provided with a first arm (251) extending along a first direction and a second arm (252) extending along a third direction, the first arm (251) being fixedly connected to the connecting portion (31) at a second side of the coil frame (21) along the third direction, and the second arm (252) being fixedly connected to the iron core (24) at a second end of the coil frame (21) along the first direction; the armature (26) is suitable for driving the contact portion (32) to swing so that the movable contact (51) swings relative to the static contact (52) on a plane perpendicular to the second direction and closes or opens with the static contact (52) along the first direction; the two sides of the coil frame (21) along the second direction respectively cooperate with the accommodating member (10) to form a blocking structure, and the first direction, the second direction and the third direction are orthogonal to each other; The condensation channel (01) is provided at a first end of the coil frame (21) along a first direction and / or a first side or a second side along a third direction.

Images