CN214370993U - Substrate protection box and gas water heater - Google Patents
Substrate protection box and gas water heater Download PDFInfo
- Publication number
- CN214370993U CN214370993U CN202023121296.2U CN202023121296U CN214370993U CN 214370993 U CN214370993 U CN 214370993U CN 202023121296 U CN202023121296 U CN 202023121296U CN 214370993 U CN214370993 U CN 214370993U
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- substrate
- substrate protection
- water heater
- gas water
- cassette
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Abstract
The utility model provides a base plate protection box and gas heater. A substrate protection cassette for housing a substrate, comprising: a substrate mounting portion for mounting the received substrate; and at least one hole portion (510) formed on the substrate protection cassette, the hole portion (510) including: an opening (511) for communicating the inside and the outside of the substrate protection case; a 1 st protrusion (512) formed above the hole (510) on the outer side of the opening (511) and protruding downward; and a slope part (513) which is formed below the hole part (510) and opposite to the 1 st protrusion part, and inclines downwards from the inner side to the outer side of the substrate protection box.
Description
Technical Field
The utility model relates to a be provided with porose base plate protection box and embed gas heater who has this base plate protection box.
Background
Conventionally, there is a gas water heater that generates hot water by heating inflow water using heat generated by burning input combustible gas or the like. In such a gas water heater, a circuit board such as a control board for controlling a combustion mechanism, a pump, an air discharge mechanism, and the like is provided. Since the inside of the gas water heater has a pipe through which water flows and air is sucked from the outside during combustion, condensed water may be formed. In order to prevent the condensed water from entering the circuit board, the circuit board is usually housed in a board protection case and is not placed inside the gas water heater.
However, since the substrate generates heat during operation, a hole is required in the substrate protection cassette in order to dissipate the heat, and the hole is generally disposed above the substrate protection cassette in view of the heat dissipation effect. When condensed water flows along the substrate protection cassette, it may enter the inside of the substrate protection cassette through the hole.
To cope with this problem, the hole pattern of the substrate protection case is improved. Fig. 6A is a front view of a conventional substrate protection cassette 900, and fig. 6B is a sectional view taken along line I-I. The board protection box includes a box body 902 and a front cover 901 covering the front thereof. A fixing portion 904 for fixing the substrate protection cassette 900 is further provided above the substrate protection cassette 900.
The figure shows a state where the front cover 901 is separated from the box body 902. In a state where the front cover 901 is separated from the case body 902, the board 903 housed in the board protection case 900 and the plurality of holes 910 opened in the rear surface side of the case body 902 above the board 903 are exposed.
Fig. 7 is an enlarged view showing the hole portion 910 (broken line region) in fig. 6B. As shown in the drawing, the hole 910 is formed in a louver shape inclined downward as a whole, and when water drops flow down from above the board protection case 900, the water drops can flow in the direction of the arrow, and the water drops are prevented from entering the inside of the board protection case.
However, in the structure of the hole of the substrate protection case, it is difficult to further enlarge the size of the hole. In addition, with the diversification of the installation manner of the gas water heater, there is also a model that allows the installation at a certain angle in an inclined manner.
Fig. 8 is a schematic view showing water flow when the substrate protection cassette is tilted. In the case of mounting at an inclination, if the substrate protection cassette is inclined as shown in fig. 8, water may enter the substrate protection cassette along the route indicated by the arrow X, causing a problem such as a short circuit. In addition, in a model that can be installed outdoors, there is a need to cope with a case where a large amount of water, such as rainwater, flows along the substrate protection cassette, and the structure of the hole of the conventional substrate protection cassette cannot cope with such a case well.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above circumstances, and provides a substrate protection box and a gas water heater incorporating the same, which can reliably prevent water from entering the protection box through a hole.
The utility model discloses an aspect provides a base plate protection box for accomodate the base plate, have: a substrate mounting portion for mounting the received substrate; and at least one hole portion formed on the substrate protection cassette, the hole portion including: an opening for communicating the inside of the substrate protection case with the outside; a 1 st projection formed above the hole portion on the outer side of the opening and projecting downward; and a slope portion formed below the hole portion facing the 1 st protrusion portion and inclined downward from an inner side to an outer side of the substrate protection cassette.
The utility model discloses a further aspect provides a gas water heater, include: at least one of the above-mentioned substrate protection cases; and a substrate disposed in the substrate protection box.
According to the utility model discloses, can accurately detect the trouble of circulating pump, avoid the extravagant problem of electric power that the malfunction of maloperation arouses.
Drawings
Fig. 1 is an external view showing an external appearance of a gas water heater 10 according to the present invention.
Fig. 2 is a sectional view showing a section II-II in fig. 1.
Fig. 3A is a front view of the substrate protection cassette 500 of the present invention, and fig. 3B is a sectional view taken along line IV-IV.
Fig. 4 is an enlarged view of the hole portion 510 (broken line area) in fig. 3B.
Fig. 5 is a diagram for explaining an effect of preventing water from entering the inside of the substrate protection case 500 by the hole portion 510 in the substrate protection case 500 according to the present invention.
Fig. 6A is a front view of a conventional substrate protection cassette 900, and fig. 6B is a sectional view taken along line I-I.
Fig. 7 is an enlarged view showing the hole portion 910 (broken line region) in fig. 6B.
Fig. 8 is a schematic view showing water flow when the substrate protection cassette is tilted.
Detailed Description
The present invention will be described below with reference to the accompanying drawings.
Fig. 1 is an external view showing an external appearance of a gas water heater 10 according to the present invention. The left side in fig. 1 is a front view of the gas water heater 10, and the right side in fig. 1 is a side view of the gas water heater 10. The gas water heater 10 includes a front cover 200 and a case 100. The front cover 200 is provided with an intake port 220 for supplying combustion air to the interior of the gas water heater 10 and an exhaust port 230 for exhausting exhaust gas after combustion.
An engaging portion 205 is provided on the peripheral portion of the front cover 200. The front cover 200 is attached to the housing 100 by fixing the engaging portion 205 and the engaging portion on the housing 100 side with a fastening member such as a bolt 207.
Although the air inlet 220 and the air outlet 230 are both provided in the front panel 200 in the drawings, the present invention is not limited thereto, and may be provided in the side surface 201 of the front cover 200.
Fig. 2 is a sectional view showing a section II-II in fig. 1. For convenience of explanation, fig. 2 shows a state where the front cover 200 is separated from the case 100.
As shown in fig. 2, an opening 102 is formed in the entire front surface of the housing 100. The gas water heater 10 includes, as typical examples of components provided in the casing 10, a fuel shutoff valve 20, a burner 30, a burner case 35, a fan 40, a combustion chamber 50, a flame detection device 55, a heat exchanger 60, an ignition device 70, an exhaust passage 85, and an exhaust pipe 90.
When the fuel cut-off valve 20 is opened, gas is supplied to the burner 30 from the outside of the gas water heater 10. A flow rate regulating valve (not shown) for regulating the fuel supply amount when the fuel cut valve 20 is opened is further disposed between the fuel cut valve 20 and the combustor 30.
The burner 30 is disposed in the burner housing 35 and burns the supplied gas in the combustion chamber 50. The ignition device 70 ignites the fuel at the start of combustion of the burner 30. And flame detection means 55 for detecting whether or not combustion has occurred in the burner 30. The fan 40 is driven to rotate by a fan motor, not shown, and supplies combustion air to the combustion chamber 50.
The combustion heat generated in the combustion chamber 50 is used to warm up the medium to be heated (e.g., tap water) passing through the gas water heater 10 in the heat exchanger 60. Then, the heated hot water is output from the gas water heater 10.
The exhaust gas after heat exchange in the heat exchanger 60 is discharged to the outside of the gas water heater 10 through the exhaust passage 85 and the exhaust pipe 90. The exhaust duct 90 is provided at a position corresponding to the exhaust port 230 of the front cover 200.
By the rotation of the fan 40, negative pressure is generated in the casing 100. Thereby, air is introduced into the interior of the casing 100 through the air inlet 220 provided in the front cover 200. The introduced air is sucked by the fan 40 to form an intake passage. The air sucked by the fan 40 is fed into the burner housing 35 to supply combustion air to the combustion chamber 50. Thus, the fan 40 provided in the casing 100 is operated to introduce the outside air into the casing 100.
The gas water heater 10 further includes a base plate. The substrate is used to mount an electronic device for supplying power and electronically controlling the components (electronic components) of the gas water heater 10, and may be at least one of a control substrate for controlling the operation of the gas water heater 10 and a power supply substrate for supplying power to each component of the gas water heater 10. In order to protect the circuit board, the circuit board is housed in a board protective case.
As shown in fig. 2, the substrate protection box 500 is disposed between the fan 40 and the air inlet 220 of the gas water heater 10. However, the present invention is not limited to this, and may be provided in the intake passage of the gas water heater 10 in view of the heat radiation effect.
Fig. 2 schematically shows a mounting position for disposing the substrate protective case 500 in which the circuit board is housed, by a broken line III.
Fig. 3A is a front view of the substrate protection cassette 500 of the present invention, and fig. 3B is a sectional view taken along line IV-IV. The board protective case is composed of a case body 502 and a front cover 501 covering the front surface thereof. A fixing portion 504 for fixing the substrate protection cassette 500 is further provided above the substrate protection cassette 500.
The figure shows a state where the front cover 501 is separated from the box body 502. In a state where the front cover 501 is separated from the case body 502, the board 503 housed in the board protection case 500 and the plurality of holes 510 opened in the rear surface side of the case body 502 above the board 503 are exposed. Here, the plurality of holes 510 are located above the board mounting portion of the mounting board 503, but the present invention is not limited thereto, and may be located below, on the left and right sides, or the like of the board mounting portion.
Although 3 holes 510 are illustrated in the drawings, this is only an example, and 3 or less holes or more than 3 holes may be provided, as long as at least one hole 510 is provided.
Fig. 4 is an enlarged view of the hole portion 510 (broken line area) in fig. 3B. Hereinafter, a specific structure of the hole portion 510 will be described in detail with reference to fig. 4.
The hole 510 is formed in the case body of the board protection case 500, and includes an opening 511, a 1 st protrusion 512, and a slope 513.
The opening 511 communicates the inside and the outside of the substrate protection cassette 500.
The 1 st projection 512 is formed above the hole 510 on the outer side of the opening 511, and projects downward.
The slope part 513 is formed below the hole part 510 facing the 1 st protrusion part 512, and is inclined downward from the inside of the substrate protection cassette 500 to the outside. The slope of the slope part 513 is not particularly limited as long as it can guide water downward.
The hole 510 further includes a 2 nd protrusion 514 formed on the slope 513 below the hole 510 and closer to the inside of the substrate protection cassette 500 than the 1 st protrusion 512.
The opening 511 is formed on the inner side of the outer contour surface 515 of the hole 510 of the board protection case 500 so that a buffer space is formed between the opening 511 and the outer contour surface 515.
The 1 st projection 512 and the 2 nd projection 514 are formed continuously in the width direction of the opening 511 (the left-right direction in fig. 3A).
The height of the 1 st projection 512 and the 2 nd projection 514 is not particularly limited as long as the height can block the flow of water, and is, for example, about 3mm to 4 mm.
Fig. 5 is a diagram for explaining an effect of preventing water from entering the inside of the substrate protection case 500 by the hole portion 510 in the substrate protection case 500 according to the present invention. As shown in fig. 5, when water flowing down from the upper portion of the substrate protection cassette 500 flows down partially in the direction indicated by the arrow a and partially along the upper wall surface of the hole 510, the water is stopped by the 1 st projection 512 and flows out of the substrate protection cassette 500, guided by the slope 513.
Here, although not essential, the provision of the 2 nd projecting portion 514 can further block the flow of water droplets into the substrate protection cassette 500, and is more preferable in terms of effect.
The board protection case 500 may be made of resin, but is not limited thereto, and may be made of other materials.
Although the present invention has been described with reference to the case body being provided with the hole, the present invention is not limited to this, and the hole may be provided in at least one of the front cover and the case body.
Although the substrate protection case of the present invention has been described by taking the example of the front cover and the case body, the present invention is not limited thereto, and other combination may be adopted, for example, the case body is formed by a top cover or a plurality of case body plates.
In addition, the skilled artisan can utilize any of the existing configurations in the prior art, including future modifications to these configurations, with respect to the function and cooperation of the various components of the gas water heater 10.
Furthermore, the utility model discloses a base plate protection box also is not only limited to the application to gas heater, as long as it just has the base plate protection box that prevents the rivers invasion to dispel the heat through the trompil as long as need, all can be suitable for the structure of the utility model obtains good effect.
Although the opening 510 is illustrated as a rectangle in the drawing, the shape is not limited to this, and may be other shapes such as a circle, a square, and an ellipse.
The present invention has been described above, but the above-described embodiments are merely specific examples for implementing the present invention, and are not intended to limit the scope of the present invention, and the present invention includes the technical solutions described in the claims and all equivalent solutions thereof, and any one or more of them may be replaced/combined by those skilled in the art.
Claims (10)
1. A substrate protection box for receiving a substrate is characterized in that,
comprising: a substrate mounting portion for mounting the received substrate; and at least one hole portion formed on the substrate protection case,
the hole portion includes: an opening for communicating the inside of the substrate protection case with the outside; a 1 st projection formed above the hole portion on the outer side of the opening and projecting downward; and a slope portion formed below the hole portion facing the 1 st protrusion portion and inclined downward from an inner side to an outer side of the substrate protection cassette.
2. The substrate protection cassette of claim 1,
the hole portion is located above the substrate mounting portion.
3. The substrate protection cassette of claim 1,
the hole portion further includes a 2 nd protrusion portion formed on the slope portion and closer to an inner side of the substrate protection cassette than the 1 st protrusion portion.
4. The substrate protection cassette of claim 1,
the opening is formed on a surface of the board protective case on an inner side of an outer contour surface of the hole so that a buffer space is formed between the opening and the outer contour surface.
5. The substrate protection cassette of claim 3,
the 1 st projection and the 2 nd projection are continuously formed in a width direction of the opening.
6. The substrate protection cassette of claim 1,
the substrate protection case is made of resin.
7. The substrate protection cassette of claim 1,
the substrate protection case is composed of a front cover and a case body, and the hole is formed in at least one of the front cover and the case body.
8. A gas water heater comprising:
at least one substrate protection cassette of claim 1; and
and the substrate is arranged in the substrate protection box.
9. The gas water heater of claim 8,
the substrate includes at least one of a control substrate for controlling an operation of the gas water heater and a power supply substrate for supplying power to each component of the gas water heater.
10. The gas water heater of claim 8,
the substrate protection box is arranged on an air inlet passage of the gas water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121296.2U CN214370993U (en) | 2020-12-22 | 2020-12-22 | Substrate protection box and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023121296.2U CN214370993U (en) | 2020-12-22 | 2020-12-22 | Substrate protection box and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214370993U true CN214370993U (en) | 2021-10-08 |
Family
ID=77987738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023121296.2U Active CN214370993U (en) | 2020-12-22 | 2020-12-22 | Substrate protection box and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214370993U (en) |
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2020
- 2020-12-22 CN CN202023121296.2U patent/CN214370993U/en active Active
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