Technical Field

[0001] The present application relates to an electrical control cabinet, and more to an electric cabinet and a reflow oven.

Background

[0002] An electric control cabinet of an existing reflow oven is disposed in the reflow oven. The electrical control cabinet is not sealed and water resistant.

Summary

[0003] The present application provides an electrical control cabinet capable of at least partially addressing the above-mentioned technical issues. The present application provides an electrical control cabinet, including a housing and a door assembly. The housing defines a cavity and an opening in communication with the cavity. The door assembly can be locked to or unlocked from the housing to close or open the opening. Upon unlocking the door assembly from the housing, the door assembly is capable of separating from the housing.

[0004] According to the described electrical control cabinet, the door assembly includes a door frame, a door plate, a sealing assembly, and a connecting piece, the sealing assembly and the door frame are disposed on two opposite sides of the door plate, the sealing assembly is disposed between the housing and the door plate and is configured to seal the door plate and the housing, and the connecting piece passes through the door frame and the door plate, so as to connect the door frame and the door plate together.

[0005] According to the described electrical control cabinet, the door plate is made of a transparent material; and/or the seating assembly is made of a flexible material.

[0006] According to the described electrical control cabinet, the connecting piece is configured to be capable of locking or unlocking the door frame and the door plate to or from the housing. [0007] According to the described electrical control cabinet, the sealing assembly includes a first seal and a second seal, where the first seal and the second seal are made of different materials.

[0008] According to the described electrical control cabinet, a lower portion of the housing is provided with a cantilever lever, and the cantilever lever is formed by extending outwards from the housing.

[0009] According to the described electrical control cabinet, a wire opening is provided on the housing. The electric control cabinet further includes a barrier disposed in the cavity and capable of closing the wire opening.

[0010] According to the described electrical control cabinet, a communication port is provided on the barrier, and the communication port is capable of communicating with the wire opening. The barrier is made of a flexible material.

[0011] According to the described electrical control cabinet, the electrical control cabinet also includes a support disposed in the cavity and in connection with the housing for supporting the barrier.

[0012] The present application also provides a reflow oven, including the described electrical control cabinet and a reflow oven housing, where the electrical control cabinet is disposed in the reflow oven housing.

[0013] The electrical control cabinet is well sealed to be effectively dust-proof and waterproof. When an inspector opens the door assembly, the door assembly separated from the housing does not obstruct the inspector and does not obstruct passage space.

[0014] The concepts, specific structures, and technical effects of the present application will be further explained below in conjunction with the appended drawings to fully understand the purpose, features, and effects of the present application.

Brief Description of the Drawings

[0015] The present application will become easier to understand when the following detailed description is read in conjunction with the accompanying drawings, in which like reference numerals represent like parts throughout the drawings, where:

[0016] FIG. 1 A is a stereoscopic view of a reflow oven according to the present application; [0017] FIG. 1 B is a stereoscopic view of a rack and an electrical control cabinet of the reflow oven shown in FIG. 1A;

[0018] FIG. 2A is a stereoscopic view of the electrical control cabinet shown in FIG. IB viewed from the front to the rear;

[0019] FIG. 2B is a partial exploded view of the electrical control cabinet shown in FIG. 2A; [0020] FIG. 2C is a cross-sectional view of the electrical control cabinet shown in FIG. 2A along line A-A;

[0021] FIG. 3A is a stereoscopic view of the electrical control cabinet shown in FIG. IB viewed from the rear to the front; and

[0022] FIG. 3B is a cross-sectional view of the electrical control cabinet shown in FIG. 2A along line B-B.

Detailed Description

[0023] Various specific embodiments of the present application will be described below with reference to the attached drawings that form a part of the present specification. It should be understood that while terms denoting orientation, such as “upper,” “lower,” “left,” “right,” etc., are used in the present application to describe various exemplar}' structural parts and elements of the present application, these terms are used herein for convenience of illustration only, and these terms are determined based on the exemplary orientations shown in the attached drawings. Since the examples disclosed in the present application may be disposed in different orientations, these terms denoting orientation are for illustrative purposes only and should not be considered as limiting.

[0024] FIG. 1 A is a stereoscopic view of a reflow oven of the present application, and FIG. IB is a stereoscopic view of a rack and an electrical control cabinet of the reflow oven shown in FIG. 1A. As shown in FIGS. 1A-1B, the reflow oven includes a reflow oven housing 101 and an electrical control cabinet 102. The reflow oven housing 101 defines a reflow oven cavity (not shown). The front of the reflow oven cavity is used to house the electrical control cabinet 102, and the rear of the reflow oven cavity is used to house a oven chamber and a heating component of the reflow oven, etc. (not shown). Various electronic elements (not shown) are housed in the electrical control cabinet to control operation of the heating component of the reflow oven. [0025] FIG. 2A is a stereoscopic view of the electrical control cabinet 102 shown in FIG. IB viewed from the front to the rear, and FIG. 2B is a partial exploded view of the electrical control cabinet 102 shown in FIG. 2A. As shown in FIGS. 2A-2B, the electrical control cabinet 102 includes a housing 202 and a door assembly 204. The housing 202 defines a cavity

222 and an opening 221. The cavity 222 is generally a cuboid. The opening 221 is provided on a front side plate of the housing 202 and is in communication with the cavity 222. The opening 221 is slightly smaller in size than the front side plate, such that the periphery of the opening 221 has a housing flange 241 for mating with the door assembly 204. The door assembly 204 can be locked to or unlocked from the housing 202. When the door assembly 204 is locked to the housing 202, the door assembly 204 closes the opening 221. When the door assembly 204 is unlocked from the housing 202, the door assembly 204 is separated from the housing 202 to open the opening 221. In other words, when the door assembly 204 is unlocked from the housing 202, the door assembly 204 can be removed from the housing 202 instead of rotating or sliding, so as to move relative to the opening 221 to open the opening 221. Therefore, when the inspector needs to inspect an electronic element in the housing 202, the inspector may reach into the cavity 222 through the opening 221.

[0026] In the present application, the housing 202 also includes three poles 223. The poles

223 are disposed in the up-down direction at the opening 221 of the housing 202. In the leftright direction, the three poles 223 are spaced apart from each other by a distance, separating the opening 221 into four small openings. The electrical control cabinet 102 includes four door assemblies 204. The four door assemblies 204 are disposed corresponding to the four small openings to open or close the corresponding small openings. The poles 223 are capable of increasing the load bearing performance of the housing 202 in the vertical direction (i.e., the up-down direction).

[0027] As shown in FIGS. 2A-2B, the door assembly 204 includes a door frame 212, a door plate 214, a sealing assembly, and a connecting piece 216. The door frame 212 is generally rectangular. The size of the outer edge thereof matches the size of the small opening. The middle of the door frame 212 is a hollow structure. As one example, the door frame 212 is made of a stainless steel material. The door plate 214 is generally a rectangular plate. As one example, the door plate 214 is made of a transparent material, for example, an acrylic plate. Therefore, the inspector can observe the state of the electronic element (e.g., an indicator light) in the cavity 222 through the door plate 214. The sealing assembly is disposed between the door plate 214 and the housing 202 for sealing the door plate 214 and the housing 202. In particular, the sealing assembly is generally rectangular so as to be able to seal the door plate 214 and the housing 202 circumferentially. As one example, the sealing assembly of the present application includes a first seal 218 and a second seal 219. The first seal 218 and the second seal 219 are made of different materials to achieve better sealing performance (i.e., water-proof and dust-proof). The connecting piece 216 is capable of passing through the door frame 212 and the door plate 214, thereby connecting the door frame 212 and the door plate 214 together. In the present application, the connecting piece 216 is further configured to be capable of locking or unlocking the door frame 212 and the door plate 214 to or from the housing 202. As one example, the connecting piece 216 is a lock. The specific structure with respect to the sealing assembly and the connecting piece 216 will be described in detail with reference to FIG. 2C.

[0028] Further, the lower portion of the housing 202 also has four cantilever levers 231 for supporting the door assemblies 204 when the four support door assemblies 204 are unlocked from the housing 202. More specifically, the cantilever lever 231 is formed by extending outwards from the bottom of the housing 202 (i.e., away from the opening 221) by a distance. When the support door assembly 204 is unlocked from the housing 202, the inspector is able to rest the door assembly 204 first on the cantilever lever 231 and then adjust the hand position to better hold the door assembly 204 and place the door assembly 204 at another position. [0029] Further, as show n in FIG. 2A, the top of the housing 202 is further provided with a housing connecting lever 252. A door assembly connecting lever 254 is also provided on the door assembly 204. In particular, the door assembly connecting lever 254 is connected to the door frame 212. When the door assembly 204 is connected to the housing 202, the inspector is able to connect the housing connecting lever 252 and the door assembly connecting lever 254 via electrical wires (not shown), thereby being effectively grounded. The inspector may remove the electncal wires (not shown) before the unlocking the door assembly 204.

[0030] FIG. 2C is a cross-sectional view of the electrical control cabinet 102 show n in FIG. 2A along line A-A to show the first seal 218 and the second seal 219 in the sealing assembly, as well as the specific structure of the connecting piece 216. As shown in FIG. 2C, the door frame 212 has a flange 220 at the periphery. The flange 220 extends from the periphery of the door frame 212 towards the housing 202. The sealing assembly includes the first seal 218 and the second seal 219. The first seal 218 is approximately a square ring. The cross-section thereof is generally U-shaped and has a forward opening. The flange 220 is received in the forward opening, thereby enabling the first seal 218 to be positioned relative to the door frame 212. The first seal 218 is a compressible edge protection, and can perform a sealing function while preventing the flange 220 from scratching the hand of the inspector. The rear end of the first seal 218 opposite the forward opening is used to abut against the housing flange 241 of the housing 202, thereby forming sealing. As one example, the first seal 218 is formed by foam EPDM (trimeric ethylene propylene rubber). The second seal 219 is approximately a square ring (FIG. 2B shows only the upper portion of the second seal 219). The annular size of the second seal 219 is smaller than the annular size of the first seal 218, thereby enabling the second seal 219 to be disposed inside the first seal 218. The cross-section of the second seal 219 is roughly in the shape of a “ |_L| ” rotated counterclockwise by 90 degrees. In particular, the rear side of the second seal 219 has three protrusions for abutting against the housing flange 241. As one example, the second seal 219 is formed from silicone foam or closed-cell rubber or synthetic rubber. The rear portion of the first seal 218 and the rear portion of the second seal 219 are aligned in the up-down direction so that when the door assembly 204 closes the opening 221, the first seal 218 and the second seal 219 can collectively abut against the housing flange 241 to form sealing.

[0031] As can also be seen from FIG. 2C, in the present application, the connecting piece 216 is a lock having a rotating lever 251. When the door assembly 204 is assembled in place, the inspector is able to rotate the rotating lever 251 of the connecting piece 216 such that the rotating lever 251 catches the housing flange 241 such that the door assembly 204 closes the opening 221 and is held in place. When the inspector wants to open the door assembly 204, the inspector rotates the rotating lever 251 of the connecting piece 216 such that the rotating lever 251 does not abut against the housing flange 241 (i.e., the rotating lever 251 is separated from the housing flange 241) such that the door assembly 204 is unlocked from the housing 202. In the present application, the door assembly 204 is provided with eight connecting pieces 216 that are arranged evenly circumferentially to mate with the housing flange 241. [0032] FIG. 3A is a stereoscopic view of the electrical control cabinet 102 shown in FIG. IB viewed from the rear to the front, and FIG. 3B is a cross-sectional view of the electrical control cabinet 102 shown in FIG. 2A along line B-B. As shown in FIG. 3A, a wire opening 322 is present at the comer of the rear side of the housing 202. The wire opening 322 is in communication with the cavity 222 to allow the electrical wire to enter the cavity 222 through the wire opening 322. In particular, the housing 202 includes a rear plate 332 and a right plate 334. The rear plate 332 and the right plate 334 are generally arranged vertically. The wire opening 322 is disposed on the rear plate 332 and is disposed proximate the right plate 334. In the present application, the rear plate 332 is provided with several wire openings 322 arranged in the up-down direction.

[0033] As shown in FIG. 3B, the electrical control cabinet 102 also includes a barrier 324 and a support 326 disposed in the cavity 222. The support 326 extends in the up-down direction. The support 326 is arranged vertically with and connected to the rear plate 332 and is arranged parallel with the right plate 334 and distant from the right plate 334 such that the support 326, the rear plate 332, and the right plate 334 enclose to form the forwardly opened “concave” shape for receiving and supporting the barrier 324. The barrier 324 is configured to be capable of blocking the wire opening 322, preventing dirt, etc., from entenng the cavity 222 from the wire opening 322. The barrier 324 is made of a flexible material such that the barrier 324 is capable of being deformed. As one example, the barrier 324 is made of a sponge. A communication port 341 is provided on the barrier 324. The communication port 341 is capable of communicating with the wire opening 322. When the inspector leads the electrical wire (not shown) from the wire opening 322, the electrical wire can pass through the wire opening 322 and the communication port 341 on the barrier 324 to enter the cavity 222. However, because the barrier 324 is a flexible material, the barrier 324 can prevent dust and the like from entering the cavity 222 through the wire opening 322 while clamping the electrical wire.

[0034] In an existing reflow oven, the electrical control cabinet is disposed in the reflow oven housing and does not have a door assembly. This arrangement makes the electrical control cabinet not sealed and waterproof.

[0035] However, the electrical control cabinet of the reflow oven of the present application includes the housing and the door assembly. The door assembly can be locked to or unlocked from the housing to close or open the opening of the housing. This arrangement makes the electrical control cabinet well sealed to be effectively dust-proof and waterproof. In addition, when the reflow oven is disposed in the factory, only a channel space of about 0.5 m is generally left on the side of the operating surface, which is relatively narrow. The door assembly of the reflow oven of the present application is able to be separated from the housing, so that when an inspector opens the door assembly, the door assembly separated from the housing does not obstruct the inspector and does not obstruct passage space.

[0036] Although the present disclosure has been described in connection with examples outlined above, various alternatives, modifications, variations, improvements, and/or substantial equivalents, whether known or foreseeable now or in the near future, may be apparent to those having at least ordinary skill in the art. In addition, the technical effects and/or technical problems described in the present specification are exemplary and not limiting; therefore, the disclosure in the present specification may be used to solve other technical problems and have other technical effects and/or may solve other technical problems. Therefore, examples of the present disclosure as set forth above are intended to be illustrative and not limiting. Various changes may be made without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to include all known or earlier developed alternatives, modifications, variations, improvements and/or substantial equivalents.