Junction box and heat pump water heater

Abstract

The utility model discloses a junction box and a heat pump water heater. The junction box comprises a box body, the peripheral wall of the box body comprises an upper side wall, and the bottom wall of the box body is provided with a wire passing hole; the wire passing sleeve is arranged in the wire passing hole in a sealed and penetrating mode, a wire passing channel is formed in the wire passing sleeve, and the wire passing channel obliquely extends towards the upper side wall from the end, away from the opening of the box body, of the wire passing channel to the end, close to the opening of the box body, of the wire passing channel. According to the scheme, a connecting line does not need to be bound in the shell, and condensate water cannot enter the box body along the connecting line from the outside of the box body.

Description

Technical Field

[0001] The utility model relates to the field of household electrical appliances, and more specifically, to a junction box and a heat pump water heater. Background Art

[0002] The existing heat pump water heater includes a shell and a junction box. The peripheral wall of the shell is provided with an installation opening. The junction box includes a box body and a box cover. The box body is fixed at the installation opening. The bottom of the box body extends into the shell. The opening of the box body faces the radial outside of the shell. The box cover is installed at the opening of the box body. Among them, the bottom wall of the box body is provided with a wire hole. The wire hole is sleeved with a wire coil. The connecting wire is inserted into the wire coil. The part of the connecting wire located inside the shell is prone to form condensed water. This part of condensed water will enter the box body through the coil along the connecting wire under the action of gravity, and it is easy to damage the wiring parts inside the box body. The existing solution is to tie down the part of the connecting wire located inside the shell with a binding tape, but this solution is complicated to operate and relatively time-consuming and labor-intensive. Utility Model Content

[0003] The embodiment of the utility model provides a junction box, which does not need to bundle connecting wires, and condensed water will not enter the inside of the box along the connecting wires.

[0004] The embodiment of the utility model also provides a heat pump water heater.

[0005] The junction box provided by the embodiment of the utility model includes: a box body, the peripheral wall of the box body includes an upper side wall, and the bottom wall of the box body is provided with a wire passing hole; a wire passing sleeve, which is sealed and penetrated in the wire passing hole, and the interior of the wire passing sleeve forms a wire passing channel, and the wire passing channel extends obliquely toward the upper side wall from an end away from the box body opening to an end adjacent to the box body opening; and a box cover, which is sealed and installed at the opening of the box body.

[0006] In some exemplary embodiments, the bottom wall of the box body is provided with a first boss protruding toward the interior of the box body, the surface of the first boss is inclined toward the upper side wall, the wire passing hole is located on the surface of the first boss, and a first groove is formed on the side of the first boss facing away from the box body opening, and the wire passing sleeve extends from its end away from the box body opening through the wire passing hole to its end adjacent to the box body opening and inclined toward the upper side wall.

[0007] In some exemplary embodiments, a first sealing ring and a second sealing ring are convexly provided on the outer circumferential surface of the wire sleeve, and the first sealing ring and the second sealing ring are located on both sides of the wire hole and abut against two outer end surfaces of the wire hole.

[0008] In some exemplary embodiments, the diameter of the first sealing ring is greater than the diameter of the second sealing ring and greater than the diameter of the wire-passing hole.

[0009] In some exemplary embodiments, a guide surface is provided on a side of the second sealing ring facing away from the first sealing ring, and the guide surface is configured to guide the second sealing ring to pass through the wire hole.

[0010] In some exemplary embodiments, at least one end of the wire passing sleeve is provided with an end wall, the end wall is provided with a wire passing opening, and the wire passing channel is communicated with the wire passing opening.

[0011] In some exemplary embodiments, the opening of the box body is provided with a mounting edge folded outward, and a side of the mounting edge facing the box cover is provided with a first countersunk hole for accommodating a nut.

[0012] In some exemplary embodiments, the junction box further includes: a sealing member, the opening of the box body is provided with an outwardly folded mounting edge, the sealing member is located between the mounting edge and the periphery of the box cover, the lower portion of the box cover is provided with a wire crimping groove and a plurality of through holes, the plurality of through holes are located on both sides of the wire crimping groove, the mounting edge is provided with a plurality of screw holes, and the plurality of through holes and the plurality of screw holes correspond one to one.

[0013] In some exemplary embodiments, the box cover is provided with a second boss protruding away from the box body, and a second recess is formed on a side of the second boss facing the opening of the box body.

[0014] In some exemplary embodiments, the peripheral wall of the box body further includes a lower side wall, and the lower side wall is provided with a drainage hole.

[0015] The heat pump water heater provided in the embodiment of the utility model comprises a shell and a junction box as described in any one of the above embodiments, the peripheral wall of the shell is provided with an installation opening, and the junction box is arranged at the installation opening.

[0016] In some exemplary embodiments, the peripheral wall of the shell is provided with a third groove recessed toward the interior of the shell, the bottom wall of the third groove is provided with a second countersunk hole and the installation port, the bottom of the box body extends into the shell from the installation port, the opening of the box body is provided with an outwardly folded installation edge, the installation edge is located in the third groove and is placed on the inner bottom surface of the third groove outside the installation port, the side of the installation edge facing the box cover is provided with a first countersunk hole, the bottom of the first countersunk hole is placed in the second countersunk hole, the threaded section of the screw passes through the bottom wall of the first countersunk hole and is screwed on the bottom wall of the second countersunk hole, and the nut of the screw sinks into the first countersunk hole.

[0017] The junction box provided by the embodiment of the utility model has a wire passing sleeve sealing sleeve arranged in the wire passing hole, and a wire passing channel is formed inside the wire passing sleeve, and the wire passing channel extends obliquely toward the upper side wall from the end away from the box body opening to the end adjacent to the box body opening. The connecting wire is inserted into the wire passing channel, and the connecting wire also extends obliquely upward from the end away from the box body opening to the end adjacent to the box body opening. In this way, condensed water formed on the part of the connecting wire located outside the box body flows back to the box body under the action of gravity, and will not flow into the inside of the box body along the wire passing channel. That is, this scheme does not need to bundle the connecting wire inside the shell, and condensed water will not enter the inside of the box body along the connecting wire outside the box body.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0020] Figure 1 A schematic diagram of the exploded structure of a heat pump water heater provided in one embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle box body;

[0022] Figure 3 for Figure 2 A schematic cross-sectional structural diagram of the box body shown;

[0023] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the middle wire sleeve;

[0024] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the middle seal;

[0025] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the middle box cover;

[0026] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the middle shell;

[0027] Figure 8 This is a schematic diagram of the partial structure of a box body provided in another embodiment of the utility model.

[0028] in, Figures 1 to 8 The corresponding relationship between the reference numerals and the component names is as follows:

[0029] 100 shell, 110 third sink groove, 111 installation port, 112 second sink hole, 200 junction box, 210 box body, 211 upper side wall, 212 wire hole, 213 first boss, 214 installation edge, 215 first sink hole, 216 lower side wall, 217 drainage hole, 218 flange, 220 wire sleeve, 221 first sealing ring, 222 second sealing ring, 223 wire seam, 230 box cover, 231 wire pressing groove, 232 second boss, 240 sealing component, 250 junction component. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0031] The heat pump water heater provided by the embodiment of the utility model is as follows Figures 1 to 8 As shown, it includes a housing 100 and a junction box 200, the peripheral wall of the housing 100 is provided with an installation opening 111, and the junction box 200 is arranged at the installation opening 111. The junction box 200 includes: a box body 210, the box body 210 is arranged at the installation opening 111, the opening of the box body 210 faces the radial outer side of the housing 100, the peripheral wall of the box body 210 includes an upper side wall 211, and the bottom wall of the box body 210 opposite to the opening of the box body 210 is provided with a wire hole 212; a wire sleeve 220, the wire sleeve 220 is sealed and penetrated in the wire hole 212, and the inside of the wire sleeve 220 forms a wire passage, and the wire passage extends from one end away from the opening of the box body 210 to the end adjacent to the opening of the box body 210, obliquely toward the upper side wall 211; and a box cover 230, the box cover 230 is located outside the housing 100 and is sealed and covered at the opening of the box body 210.

[0032] In the heat pump water heater, the wire sleeve 220 sealing sleeve is arranged in the wire hole 212, and a wire channel is formed inside the wire sleeve 220. The wire channel extends obliquely toward the upper side wall 211 from the end away from the opening of the box body 210 to the end adjacent to the opening of the box body 210. The connecting wire is passed through the wire channel, and the connecting wire also extends obliquely upward from the end away from the opening of the box body 210 to the end adjacent to the opening of the box body 210. In this way, condensed water formed on the part of the connecting wire located outside the box body 210 (i.e., inside the shell 100) flows back to the box body 210 under the action of gravity, and will not flow into the inside of the box body along the wire channel. That is, this solution does not need to bundle the connecting wire inside the shell 100, and the condensed water will not enter the box body 210 inside the shell along the connecting wire.

[0033] It can be that the wire hole 212 and the wire sleeve 220 comprise a set; or it can be that Figure 1 , Figure 2 and Figure 8 As shown, the wire holes 212 and the wire sleeves 220 include multiple groups, which may be two groups, three groups or four groups, etc.; the above can all achieve the purpose of this application, and its purpose does not deviate from the design concept of the utility model, and will not be repeated here, and should all fall within the protection scope of this application.

[0034] In some examples, such as Figure 2 , Figure 3 and Figure 8 As shown, the bottom wall of the box body 210 is provided with a first boss 213 protruding toward the inside of the box body 210, and the table top of the first boss 213 is inclined toward the upper side wall 211, that is, the table top of the first boss 213 is arranged inclined upward, and the wire hole 212 is located on the table top of the first boss 213, and a first groove is formed on the side of the first boss 213 that is away from the opening of the box body 210, and the wire sleeve 220 is inserted into the wire hole 212, and the wire sleeve 220 extends from the end away from the opening of the box body 210 through the wire hole 212 to the end adjacent to the opening of the box body 210. The condensed water formed on the part of the wire sleeve 220 located outside the box body 210 (that is, inside the shell 100) flows away from the box body 210 under the action of gravity, and will not flow along the wire sleeve 220 to the wire hole 212. This scheme can better prevent the condensed water from entering the interior of the box body 210 at the wire hole 212. The first boss 213 can be manufactured by stamping, so the manufacturing difficulty of the first boss 213 is relatively small.

[0035] In some examples, such as Figure 4 As shown, the outer circumferential surface of the wire sleeve 220 is convexly provided with a first sealing ring 221 and a second sealing ring 222, which are located on both sides of the wire hole 212 and abut against the two outer end surfaces of the wire hole 212 to achieve a sealed fit between the wire sleeve 220 and the hole wall of the wire hole 212. That is, one of the two outer end surfaces of the wire hole 212 abuts against the first sealing ring 221, and the other of the two outer end surfaces of the wire hole 212 abuts against the second sealing ring 222, so that the wire sleeve 220 is interference-fitted at the wire hole 212.

[0036] Among them, Figure 1 and Figure 4As shown, the diameter of the first sealing ring 221 is greater than the diameter of the second sealing ring 222 and greater than the diameter of the wire hole 212. It is possible that the first sealing ring 221 is located inside the box body 210, and the second sealing ring 222 is located outside the box body 210. In this case, the second sealing ring 222 of the wire sleeve 220 is installed from the inside of the box body 210 through the wire hole 212 to the outside of the box body 210; or it is possible that the first sealing ring 221 is located outside the box body 210, and the second sealing ring 222 is located inside the box body 210. In this case, the second sealing ring 222 of the wire sleeve 220 is installed from the outside of the box body 210 through the wire hole 212 to the inside of the box body 210; all of the above can achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and should all fall within the protection scope of the present application. In one embodiment, if Figure 8 As shown, the hole wall of the wire hole 212 is provided with a flange 218 folded toward the first sink groove, which can also achieve the purpose of this application. Its purpose does not deviate from the design concept of the utility model and will not be repeated here. It should all fall within the protection scope of this application.

[0037] Furthermore, if Figure 4 As shown, a guide surface is provided on the side of the second sealing ring 222 facing away from the first sealing ring 221, and the guide surface can guide the second sealing ring 222 to pass through the wire hole 212 more smoothly, so as to reduce the difficulty of assembling the wire sleeve 220 at the wire hole 212. Alternatively, the guide surface can be set as a guide inclined surface; or the guide surface can be set as a guide curved surface, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of this utility model, and will not be repeated here, and all should fall within the protection scope of this application.

[0038] Furthermore, if Figure 4 As shown, at least one end of the wire sleeve 220 is provided with an end wall, and the end wall is provided with a wire passing slit 223, the wire passing channel is connected with the wire passing slit 223, the connecting wire is also passed through the wire passing slit 223, and the end wall abuts against the connecting wire, which can further prevent the condensed water formed on the part of the connecting wire located outside the box body 210 from flowing into the box body 210 through the wire passing slit 223. The wire passing slit 223 can be a "Y"-shaped slit; or it can be, as Figure 4 As shown, the thread seam 223 is a "+"-shaped seam; or it can be that the thread seam 223 is a "*"-shaped seam, etc.; the above can all achieve the purpose of this application, and its purpose does not deviate from the design concept of the utility model, and will not be repeated here, and should all fall within the protection scope of this application.

[0039] It can be, for example Figure 4As shown, the end of the wire sleeve 220 located outside the box body 210 (i.e., inside the shell 100) is provided with an end wall, and the end of the wire sleeve 220 located inside the box body 210 is through-connected; or it can be that the end of the wire sleeve 220 located inside the box body 210 is provided with an end wall, and the end of the wire sleeve 220 located outside the box body 210 (i.e., inside the shell 100) is through-connected; or it can be that the end of the wire sleeve 220 located inside the box body 210 and the end of the wire sleeve 220 located outside the box body 210 (i.e., inside the shell 100) are both provided with end walls, etc.; all of the above can achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and should all belong to the protection scope of the present application.

[0040] In some examples, such as Figure 1 , Figure 2 , Figures 5 to 7 As shown, the opening of the box body 210 is provided with an outwardly folded mounting edge 214, and the mounting edge 214 is in a ring shape; the junction box 200 also includes: a sealing member 240, the sealing member 240 is located between the mounting edge 214 and the periphery of the box cover 230, and the lower part of the box cover 230 is provided with a wire pressing groove 231 and a plurality of through holes (such as two through holes), and the plurality of through holes are located on both sides of the wire pressing groove 231, and the wire pressing groove 231 presses the second connecting wire to the lower part of the mounting edge 214, that is, the second connecting wire A part of the second connecting wire extends into the box body 210 through the wire pressing groove 231, and the other part of the second connecting wire is located at the front lower part of the box body 210 (the box cover 230 is located at the front part of the box body 210). The mounting edge 214 is provided with a plurality of screw holes, and the plurality of through holes and the plurality of screw holes correspond to each other. The threaded connector (such as a screw) passes through the through hole and is screwed into the screw hole to fix the lower part of the box cover 230 to the lower part of the mounting edge 214, and the wire pressing groove 231 presses the second connecting wire to the lower part of the mounting edge 214. The upper part of the box cover 230 and the upper part of the mounting edge 214 are also arranged to be fixedly connected through a threaded connector.

[0041] In some examples, such as Figure 7As shown, the peripheral wall of the shell 100 is provided with a third sinking groove 110 recessed toward the inside of the shell 100, and the bottom wall of the third sinking groove 110 opposite to the notch of the third sinking groove 110 is provided with a second sinking hole 112 and a mounting opening 111. The second sinking hole 112 can be made by stamping, and the opening of the second sinking hole 112 faces the radial outer side of the shell 100. The bottom of the box body 210 opposite to the opening of the box body 210 extends into the shell 100 from the mounting opening 111. The mounting edge 214 is located in the third sinking groove 110 and is placed on the third sinking hole 112 outside the mounting opening 111. On the inner bottom surface of the sink 110, a first countersunk hole 215 is provided on the side of the mounting edge 214 facing the box cover 230. The first countersunk hole 215 is made by stamping, and the bottom of the first countersunk hole 215 opposite to the opening of the first countersunk hole 215 is placed in the second countersunk hole 112. The threaded section of the screw passes through the bottom wall of the first countersunk hole 215 and is screwed on the bottom wall of the second countersunk hole 112. The nut of the screw sinks into the first countersunk hole 215. This can avoid the problem of poor sealing between the box cover 230 and the mounting edge 214 caused by the nut of the screw supporting the box cover 230.

[0042] Among them, Figure 2 and Figure 7 As shown, the first countersunk holes 215 and the second countersunk holes 112 include two groups arranged at circumferential intervals in the shell 100, and the installation port 111 is located between the two second countersunk holes 112. This solution can ensure that the box body 210 is firmly fixed on the bottom wall of the third sink groove 110 outside the installation port 111.

[0043] In some embodiments, Figure 1 and Figure 6 As shown, the box cover 230 is provided with a second boss 232 protruding away from the box body 210, and a second recess is formed on the side of the second boss 232 that opens toward the box body 210. A wiring member 250 is provided in the box body 210, and the wiring member 250 is opposite to the bottom wall of the second recess. This solution can increase the electrical safety distance between the wiring member 250 and the box cover 230, and improve the safety of the junction box. Alternatively, the second boss 232 is made by stamping, so that the manufacturing difficulty of the second boss 232 is lower.

[0044] In some embodiments, Figure 2 As shown, the peripheral wall of the box body 210 also includes a lower side wall 216, and the lower side wall 216 is provided with a drainage hole 217. If condensed water is formed in the box body 210, the condensed water formed in the box body 210 can be discharged from the drainage hole 217 and fall onto the water receiving tray inside the shell 100.

[0045] In some embodiments, Figure 1 , Figure 5 and Figure 6As shown, the sealing member 240 is configured as a sealing ring. Further, a relief notch 241 is provided on the sealing ring at a position corresponding to the wire pressing groove 231 , and the second connecting wire is located in the relief notch 241 .

[0046] To sum up, in the junction box provided by the embodiment of the utility model, the wire passing sleeve sealing sleeve is arranged in the wire passing hole, and a wire passing channel is formed inside the wire passing sleeve, and the wire passing channel extends obliquely toward the upper side wall from the end away from the box body opening to the end adjacent to the box body opening. The connecting wire is passed through the wire passing channel, and the connecting wire also extends obliquely upward from the end away from the box body opening to the end adjacent to the box body opening. In this way, condensed water formed on the part of the connecting wire located outside the box body flows back to the box body under the action of gravity, and will not flow into the inside of the box body along the wire passing channel. That is, this scheme does not need to bundle the connecting wire inside the shell, and condensed water will not enter the inside of the box body along the connecting wire outside the box body.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A junction box, characterized in that: include: A box body, wherein the peripheral wall of the box body includes an upper side wall, and the bottom wall of the box body is provided with a wire hole; A wire passing sleeve is sealed and penetrated in the wire passing hole, and a wire passing channel is formed inside the wire passing sleeve. The wire passing channel extends obliquely toward the upper side wall from an end thereof away from the box body opening to an end thereof close to the box body opening; and A box cover and a sealing cover are arranged at the opening of the box body.

2. The junction box according to claim 1, characterized in that: The bottom wall of the box body is provided with a first boss protruding toward the inside of the box body, the table top of the first boss is inclined toward the upper side wall, the wire passing hole is located on the table top of the first boss, and a first recessed groove is formed on the side of the first boss facing away from the box body opening, and the wire passing sleeve extends from its end away from the box body opening through the wire passing hole to its end adjacent to the box body opening, inclined toward the upper side wall.

3. The junction box according to claim 1, characterized in that: The outer circumferential surface of the wire sleeve is convexly provided with a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are located on both sides of the wire hole and abut against two outer end surfaces of the wire hole.

4. The junction box according to claim 3, characterized in that: The diameter of the first sealing ring is greater than the diameter of the second sealing ring and greater than the diameter of the wire hole. A guide surface is provided on the side of the second sealing ring facing away from the first sealing ring, and the guide surface is configured to guide the second sealing ring to pass through the wire hole.

5. The junction box according to claim 1, characterized in that: At least one end of the wire passing sleeve is provided with an end wall, the end wall is provided with a wire passing seam, and the wire passing channel is communicated with the wire passing seam.

6. The junction box according to any one of claims 1 to 5, characterized in that: The opening of the box body is provided with a mounting edge folded outward, and the side of the mounting edge facing the box cover is provided with a first countersunk hole for accommodating a nut.

7. The junction box according to any one of claims 1 to 5, characterized in that: Also includes: A sealing member, wherein the opening of the box body is provided with an outwardly folded mounting edge, the sealing member is located between the mounting edge and the periphery of the box cover, the lower portion of the box cover is provided with a wire pressing groove and a plurality of through holes, the plurality of through holes are located on both sides of the wire pressing groove, the mounting edge is provided with a plurality of screw holes, and the plurality of through holes and the plurality of screw holes correspond one to one.

8. The junction box according to any one of claims 1 to 5, characterized in that: The box cover is provided with a second boss protruding away from the box body, and a second recess is formed on a side of the second boss facing the opening of the box body; The peripheral wall of the box body further comprises a lower side wall, and the lower side wall is provided with a drainage hole.

9. A heat pump water heater, characterized in that: The invention comprises a shell and a junction box as claimed in any one of claims 1 to 8, wherein a peripheral wall of the shell is provided with a mounting opening, and the junction box is arranged at the mounting opening.

10. The heat pump water heater according to claim 9, characterized in that: The peripheral wall of the shell is provided with a third groove recessed toward the interior of the shell, the bottom wall of the third groove is provided with a second countersunk hole and the installation port, the bottom of the box body extends into the shell from the installation port, the opening of the box body is provided with an outwardly folded installation edge, the installation edge is located in the third groove and is placed on the inner bottom surface of the third groove outside the installation port, the side of the installation edge facing the box cover is provided with a first countersunk hole, the bottom of the first countersunk hole is placed in the second countersunk hole, the threaded section of the screw passes through the bottom wall of the first countersunk hole and is screwed on the bottom wall of the second countersunk hole, and the nut of the screw sinks into the first countersunk hole.

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