Heat source machine

Abstract

To provide a heat source machine for preventing the generation of rust at an end portion of a lower part of a front plate.SOLUTION: A case 2 is composed of a top plate 4, a body plate 6 made of a right side surface plate, a left side surface place, and a back surface plate, a bottom plate 5, and a front plate 3 covering an opening portion formed by the top plate 4, the body plate 6 and the bottom plate 5. A heat source machine includes a combustion device equipped with a burner and a heat exchanger, in the case 2. At a lower part of the front plate 3, a bottom surface portion 13 contacting with the bottom plate 5 is provided, and the bottom plate 5 is provided with a receiving portion 9 contacting with the bottom surface portion 13 of the front plate 3. At a tip end of the bottom surface portion 13, an extending portion 15 that does not contact with the receiving portion 9 is formed, so that rain water entering the inside of the case 2 and reaching the lower part of the front plate 3 is guided from the bottom surface portion 13 to the extending portion 15, and reaches the tip end of the extending portion 15 to flow as water drops. Therefore, the rain water entering the inside of the case 2 is not collected on an end surface on which lower surfaces of the bottom plate 5 and the front plate 3 contact, and the generation of rust on the end surface on which the lower surfaces of the bottom plate 5 and the front plate 3 contact can be prevented.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This invention relates to heat source machines such as water heaters and hot water boilers.

Background Art

[0002] Conventionally, in this type of device, a housing incorporating a heat exchanger with a combustion section is provided with a recess that is recessed outward and a cover section that covers the recess between the recess and electrical components. A first communication hole that communicates the inside of the recess with the outside of the housing is provided in the recess, and a second communication hole that communicates the inside of the recess with the inside of the housing is provided in the cover section. And in some cases, the first communication hole and the second communication hole are provided at positions shifted from each other when viewed in the direction in which the recess and the cover section overlap.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in this conventional device, if rainwater that has entered the case reaches the second communication hole, it can drain outside the case through the first communication hole from the second communication hole without rainwater entering from the outside. However, when the case is installed in a stationary position, in order to improve workability during installation work and maintenance work, etc., a structure can be considered in which the lower surface of the front plate that constitutes the case contacts the bottom plate of the case. In this case, there is a problem that rainwater that has entered the case stays at the end face where the bottom plate and the lower surface of the front plate contact, the rainwater that has entered the case does not reach the drainage hole, and rust occurs on the end face where the bottom plate and the lower surface of the front plate contact.

Means for Solving the Problems

[0005] To solve the above problems, claim 1 of the present invention provides a heat source machine in which a case is constructed of a top plate, a body plate consisting of a right side plate, a left side plate, and a back plate, a bottom plate, and a front plate that covers the opening formed by the top plate, body plate, and bottom plate, and a combustion device equipped with a burner and a heat exchanger is built into the case, wherein the lower part of the front plate is provided with a bottom surface that contacts the bottom plate, the bottom plate is provided with a receiving portion that contacts the bottom surface of the front plate, and an extension portion is formed at the tip of the bottom surface that does not contact the receiving portion.

[0006] Also, claims 1 The receiving portion comprises a raised portion formed by erecting the end of the bottom plate, a receiving portion that is bent horizontally at the tip of the raised portion to contact the bottom surface of the front plate, and an engaging portion that is erected on the receiving portion and engages with the bottom surface of the front plate, with an extension formed at the tip of the bottom surface. [Effects of the Invention]

[0007] According to claim 1 of this invention, the lower part of the front plate is provided with a bottom surface that contacts the bottom plate, and the bottom plate is provided with a receiving portion that contacts the bottom surface of the front plate, and an extension portion that does not contact the receiving portion is formed at the tip of the bottom surface. As a result, rainwater that enters the inside of the case and reaches the lower part of the front plate is guided from the bottom surface to the extension portion, reaches the tip of the extension portion and flows away as droplets, so that rainwater that enters the inside of the case does not remain on the end surface where the lower surfaces of the bottom plate and the front plate meet, and rust can be prevented from occurring on the end surface where the lower surfaces of the bottom plate and the front plate meet.

[0008] Also, claims 1According to the design, the receiving section comprises a raised section with an upright end of the bottom plate, a receiving section with the tip of the raised section bent horizontally to contact the bottom surface of the front plate, and an engaging section erected on the receiving section and engaging with the bottom surface of the front plate. An extension is formed at the tip of the bottom surface, so rainwater that enters the inside of the case and reaches the bottom of the front plate is guided from the bottom surface to the extension, and reaches the tip of the extension, where it turns into water droplets. Since the extension is higher than the bottom plate by the height of the raised section, the water droplets at the tip of the extension fall downward due to their own weight. As a result, rainwater that enters the inside of the case does not remain on the end surface where the bottom plate and the bottom surface of the front plate meet, and rust can be prevented from occurring on the end surface where the bottom plate and the bottom surface of the front plate meet. [Brief explanation of the drawing]

[0009] [Figure 1] An external perspective view of one embodiment of this invention. [Figure 2] Side view of the same. [Figure 3] Cross-sectional view of the key part of the engagement point between the front plate and the bottom plate.

[0010] Book The configuration of the heat source machine according to the embodiment of the invention will be described in detail with reference to the drawings. Book The embodiment applies the present invention to a hot water supply device 1 as a heat source for hot water supply, and a combustion device (not shown) equipped with a burner (not shown) and a heat exchanger (not shown), and a circuit board unit (not shown) that controls the operation of the combustion device, etc., are built into a case 2 that forms the housing of the hot water supply device 1.

[0011] The combustion apparatus includes a burner that burns fuel in response to the supply of combustion air from a blower fan (not shown), a heat exchanger (not shown) that recovers heat from the combustion exhaust generated by the combustion of the burner to heat a fluid to be heated (for example, water), an exhaust passage (not shown) through which the combustion exhaust after passing through the heat exchanger flows, and an exhaust port (not shown) at the downstream end of the exhaust passage for exhausting the combustion exhaust to the outside.

[0012] The case 2 of the hot water heater 1 is composed of a front panel 3, a top panel 4, a bottom panel 5, and a body panel 6 which is formed integrally with the right side panel, left side panel, and back panel. When the front panel 3 of the case 2 is removed, the front side of the case 2 is opened, forming an opening (not shown). In this state with the front panel 3 removed, the circuit board unit is installed in the upper part of the case 2 and facing the opening. Normally, when the hot water heater 1 is in use, the opening is closed with the front panel 3.

[0013] child Herein, Figure 3 is a cross-sectional view of the main part showing the engagement state between the lower part of the front plate 3 and the bottom plate 5, with the opening closed by the front plate 3.

[0014] As shown in Figure 3, the front end of the bottom plate 5 is provided with a rising portion 8 that rises approximately at a right angle from the base portion 7 of the bottom plate 5, a receiving portion 9 that forms a horizontal portion by bending the rising portion 8 at approximately a right angle, and an engaging portion 10 that is raised upward from a part of the receiving portion 9 and engages with the lower part of the front plate 3.

[0015] Furthermore, the front plate 3 has a roughly U-shaped cross-section and consists of a front portion 11, left and right side portions 12, and a bottom portion 13. The bottom portion 13 is in contact with the receiving portion 9 of the bottom plate 5 and has an engagement hole 14 into which the engaging portion 10 of the bottom plate 5 is inserted.

[0016] Furthermore, an extension 15 is provided at the tip of the bottom surface 13 of the front plate 3. This extension 15 is formed further back than the rising portion 8 of the base plate 5 and is provided so as not to come into contact with the receiving portion 9 of the base plate 5.

[0017] Next, we will explain what happens when rainwater or other liquids enter the inside of the front panel 3. Rainwater that penetrates the inside of the front panel 3 flows down the inside of the front panel 3 due to its own weight and falls onto the bottom surface 13 of the front panel 3.

[0018] The water that has flowed down to the bottom surface portion 13 of the front plate 3 is partially drained outside the case 2 through the gap between the engaging portion 10 of the bottom plate 5 and the engaging hole 14. However, since the gap is narrow, only a small amount of water is drained, and most of the remaining water moves along the bottom surface portion 13 toward the extension portion 15.

[0019] The water that has reached the tip of the extension portion 15 moves along the lower surface of the extension portion 15 to the rising portion 8 of the bottom plate 5, and then flows along it to the base portion 7 of the bottom plate 5, and is drained outside the case 2 through a drain port (not shown) provided in the base portion 7.

[0020] Also, when the water that has reached the tip of the extension portion 15 becomes water droplets, it falls downward from the tip of the extension portion 15 due to its own weight and reaches the base portion 7 of the bottom plate 5, and is drained outside the case 2 through a drain port (not shown) provided in the base portion 7.

[0021] As described above, the bottom surface portion 13 that contacts the bottom plate 5 is provided at the lower part of the front plate 3, the receiving portion 9 that contacts the bottom surface portion 13 of the front plate 3 is provided on the bottom plate 5, and the extension portion 15 that does not contact the receiving portion 9 is formed at the tip of the bottom surface portion 13. Therefore, the water that has entered the case 2 and reached the bottom surface portion 13 of the front plate 3 flows without staying because the extension portion 15 does not contact the receiving portion 9, and it is possible to prevent rust from occurring at the portion where the bottom surface portion 13 of the bottom plate 5 and the lower surface of the front plate 3 contact.

[0022] Also, the tip portion of the bottom plate 5 includes a rising portion 8 that stands up the end portion of the bottom plate 5, a receiving portion 9 that bends the tip of the rising portion 8 in the horizontal direction to contact the bottom surface portion 13 of the front plate 3, and an engaging portion 10 that stands on the receiving portion 9 and engages with the bottom surface portion 13 of the front plate 3. Since the extension portion 15 is formed at the tip of the bottom surface portion 13, water flows down from the extension portion 15 to the rising portion 8, or falls from the extension portion 15 due to the weight of the water by the drop between the extension portion 15 and the bottom plate 5. Thereby, the water does not stay on the bottom surface portion 13 of the front plate 3 and flows, and it is possible to prevent rust from occurring at the portion where the bottom plate 5 and the bottom surface portion 13 of the lower surface of the front plate 3 contact.

[0023] NaThe present invention is not limited to the embodiment described above. In this embodiment, the present invention was applied to a hot water supply device 1 as a heat source unit that includes a combustion device and a circuit board unit for controlling the operation of the combustion device etc. inside a case 2. However, the present invention may also be applied to a hot water boiler as a heat source unit that includes a combustion device and a circuit board unit for controlling the operation of the combustion device etc. inside a case 2. [Explanation of Symbols]

[0024] 1. Hot water supply system 2 cases 3 Front panel 4 Top plate 5 Bottom plate 6 body plate 9 Receiving part 13 Bottom part 15 Extension

Claims

[Claim 1] A heat source machine comprising a case consisting of a top plate, a body plate comprising a right side plate, a left side plate, and a back plate, a bottom plate, and a front plate covering an opening formed by the top plate, the body plate, and the bottom plate, and a combustion device equipped with a burner and a heat exchanger built into the case, wherein the lower part of the front plate is provided with a bottom surface that contacts the bottom plate, the bottom plate is provided with a receiving portion that contacts the bottom surface of the front plate, an extension portion is formed at the tip of the bottom surface that does not contact the receiving portion, the tip of the bottom plate comprises a rising portion formed by erecting the end of the bottom plate, a receiving portion that is bent horizontally at the tip of the rising portion and contacts the bottom surface of the front plate, and an engaging portion that is erected on the receiving portion and engages with the bottom surface of the front plate, and the extension portion is formed at the tip of the bottom surface.

Images