Heat source machine

Abstract

The present invention provides a heat source unit that can ensure the rigidity of the upper wall of the enclosure while suppressing the falling of insulation materials. [Solution] The heat source unit comprises a housing, a first reinforcing member, and a heat insulating member. The housing has a first side wall, a second side wall, a front wall, and a back wall extending along a first direction, a bottom wall connected to the lower end of the first side wall, the lower end of the second side wall, the lower end of the front wall, and the lower end of the back wall, and an upper wall positioned opposite the bottom wall at a distance in the first direction and connected to the upper end of the first side wall, the upper end of the second side wall, the upper end of the front wall, and the upper end of the back wall. The first side wall and the second side wall are positioned opposite each other at a distance in a second direction perpendicular to the first direction. The front wall and the back wall are positioned opposite each other at a distance in a third direction perpendicular to the first and second directions. The first reinforcing member supports the upper wall along the direction from the bottom wall to the upper wall by interposing a heat insulating member between itself and the inner wall surface of the upper wall.

Description

Technical Field

[0001] The present invention relates to a heat source machine.

Background Art

[0002] Japanese Patent No. 58,62,946 (Patent Document 1) describes a heat source machine. The heat source machine described in Patent Document 1 has a housing and a heat insulating material. The heat insulating material is attached to the inner wall surface of the upper wall of the housing. This suppresses dew condensation on the inner wall surface of the upper wall of the housing due to the temperature difference between the inside and outside of the housing.

Prior Art Documents

Patent Documents

[0003] [[ID=​​​​​​​​​​​​​​​​​​​​​​The heat source unit of the present invention comprises a housing, a first reinforcing member, and a heat insulating member. The housing has a first side wall, a second side wall, a front wall, and a back wall extending along a first direction, a bottom wall connected to the lower end of the first side wall, the lower end of the second side wall, the lower end of the front wall, and the lower end of the back wall, and an upper wall positioned opposite the bottom wall at a distance in the first direction and connected to the upper end of the first side wall, the upper end of the second side wall, the upper end of the front wall, and the upper end of the back wall. The first side wall and the second side wall are positioned opposite each other at a distance in a second direction perpendicular to the first direction. The front wall and the back wall are positioned opposite each other at a distance in a third direction perpendicular to the first and second directions. The first reinforcing member supports the upper wall along the direction from the bottom wall to the upper wall with a heat insulating member interposed between it and the inner wall surface of the upper wall. [Effects of the Invention]

[0007] According to the heat source machine of the present invention, it is possible to ensure the rigidity of the upper wall of the housing while suppressing the falling of the heat insulating material. [Brief explanation of the drawing]

[0008] [Figure 1] This is an exploded perspective view of the heat source unit 100. [Figure 2] This is a plan view of the heat source unit 100. [Figure 3] This is a cross-section at line III-III in Figure 2. [Figure 4] This is a plan view of the enclosure 10. [Figure 5] This is an exploded perspective view of the upper wall 16 of the heat source unit in the comparative example. [Modes for carrying out the invention]

[0009] The details of the embodiment will be described with reference to the drawings. In the following drawings, the same or corresponding parts will be denoted by the same reference numerals, and redundant descriptions will not be repeated. The heat source unit according to the embodiment will be referred to as the heat source unit 100. The heat source unit 100 is, for example, an oil-fired water heater, but is not limited thereto.

[0010] (Configuration of heat source unit 100) The configuration of the heat source unit 100 is described below.

[0011] Figure 1 is an exploded perspective view of the heat source unit 100. Figure 2 is a plan view of the heat source unit 100. Figure 3 is a cross-section at III-III in Figure 2. As shown in Figures 1, 2 and 3, the heat source unit 100 includes a housing 10, a smoke collection unit 20, a reinforcing member 30, and a heat insulating member 40.

[0012] The enclosure 10 has side walls 11 and 12, a front wall 13 and a rear wall 14, a bottom wall 15 and a top wall 16. The side walls 11, 12, 13 and 14 extend along a first direction DR1. The heat source unit 100 is installed, for example, so that the first direction DR1 is aligned vertically. Each of the side walls 11, 12, 13 and 14 has an upper end and a lower end located opposite the upper end in the first direction DR1.

[0013] Side walls 11 and 12 are positioned opposite each other with a gap between them in the second direction DR2. The second direction DR2 is perpendicular to the first direction DR1. Front wall 13 and back wall 14 are positioned opposite each other with a gap between them in the third direction DR3. The third direction DR3 is perpendicular to the first direction DR1 and the second direction DR2. One end and the other end of side wall 11 in the third direction DR3 are connected to the front wall 13 and the back wall 14, respectively. One end and the other end of side wall 12 in the third direction DR3 are connected to the front wall 13 and the back wall 14, respectively.

[0014] The bottom wall 15 is connected to the lower ends of the side walls 11, the side walls 12, the front wall 13, and the back wall 14. The top wall 16 is connected to the upper ends of the side walls 11, the side walls 12, the front wall 13, and the back wall 14. Therefore, in the first direction DR1, the bottom wall 15 and the top wall 16 are positioned opposite each other with a gap between them.

[0015] The distance between side wall 11 and side wall 12 in the second direction DR2 is called the first distance. The distance between front wall 13 and back wall 14 in the third direction DR3 is called the second distance. The first distance is, for example, larger than the second distance. In this way, the housing 10 is generally rectangular in shape.

[0016] The heat source unit 100 further includes a reinforcing member 50. The reinforcing member 50 extends along a second direction DR2. One end of the reinforcing member 50 in the second direction DR2 is fixed to the inner wall surface located at one end of the side wall 11 in the third direction DR3, at the upper end of the side wall 11. The other end of the reinforcing member 50 in the second direction DR2 is fixed to the inner wall surface located at one end of the side wall 12 in the third direction DR3, at the upper end of the side wall 12. The upper end of the front wall 13 is fixed to the reinforcing member 50.

[0017] A through-hole 16a is formed in the upper wall 16. The through-hole 16a penetrates the upper wall 16 along the third direction DR3. From another perspective, the through-hole 16a communicates with the internal space of the housing 10. In plan view, the through-hole 16a is located in the center of the upper wall 16 in the second direction DR2 and is located closer to the back wall 14 than to the front wall 13 in the third direction DR3. In plan view, the through-hole 16a is, for example, circular.

[0018] The upper wall 16 is made of steel plate. The upper wall 16 is made of, for example, color steel plate (steel plate with a painted surface). The thickness of the steel plate used for the upper wall 16 is preferably 0.7 mm or less. The thickness of the steel plate used for the upper wall 16 may be 0.6 mm or less, or 0.5 mm or less.

[0019] The smoke collection part 20 has a main body part 21 and a cylindrical part 22. The main body part 21 has an upper surface 21a. The upper surface 21a is an end surface of the main body part 21 in the first direction DR1. The cylindrical part 22 is connected to the upper surface 21a. The cylindrical part 22 extends along the first direction DR1. That is, the cylindrical part 22 protrudes from the upper surface 21a along the first direction DR1 from the upper surface 21a. The smoke collection part 20 is disposed within the housing 10. More specifically, the smoke collection part 20 is disposed such that the upper surface 21a faces the inner wall surface of the upper wall 16 while the cylindrical part 22 is inserted into the through hole 16a. The cylindrical part 22 protrudes outside the housing 10 through the through hole 16a. The cylindrical part 22 is, for example, cylindrical. The combustion gas generated in the combustion part 71 described later is discharged outside the housing 10 sequentially through the inside of the main body part 21 and the inside of the cylindrical part 22.

[0020] The reinforcing member 30 extends along the third direction DR3. The reinforcing member 30 is disposed, for example, so as to overlap the central part of the upper wall 16 in the second direction DR2. One end of the reinforcing member 30 in the third direction DR3 is fixed to the reinforcing member 50. The other end of the reinforcing member 30 in the third direction DR3 is disposed on the upper surface 21a. The length of the reinforcing member 30 in the third direction DR3 is smaller than the second interval.

[0021] The heat source machine 100 may further have a spindle anchor 60 (see FIG. 2). The spindle anchor 60 is attached to the inner wall surface of the upper wall 16 by a double-sided tape such that the pin protrudes from the inner wall surface of the upper wall 16 along the first direction DR1. The heat insulating member 40 is, for example, a sheet-shaped glass wool. The heat insulating member 40 is held by the spindle anchor 60 and thus the upper wall 16 by passing the pin of the spindle anchor 60 through the heat insulating member 40 and then bending the pin. The heat insulating member 40 is sandwiched between the reinforcing member 30 and the inner wall surface of the upper wall 16. That is, the reinforcing member 30 supports the upper wall 16 from below along the direction from the bottom wall 15 toward the upper wall 16 with the heat insulating member 40 interposed between the reinforcing member 30 and the inner wall surface of the upper wall 16.

[0022] Figure 4 is a plan view of the housing 10. However, the upper wall 16 and the smoke collection section 20 are not shown in Figure 4. As shown in Figure 4, the bottom wall 15 is divided into a first region R1 and a second region R2 along the third direction DR3 in a plan view. The second region R2 is further away from the front wall 13 than the first region R1 in the third direction DR3.

[0023] The heat source unit 100 includes a fan motor 70 and a combustion unit 71. The combustion unit 71 includes a burner and a heat exchanger. Air from the fan motor 70 and fuel are supplied to the vicinity of the burner. The burner includes an ignition transformer and an electrode rod connected to the ignition transformer. By driving the ignition transformer and generating a spark at the tip of the electrode rod, the fuel is burned and the burner generates combustion gas. The combustion gas flows through a gas passage provided inside the combustion unit 71 and heats the water by exchanging heat with the water flowing through a water passage also provided inside the combustion unit 71.

[0024] The heat source unit 100 has electrical components 72. The electrical components 72 are mounted, for example, on a circuit board 73. The circuit board 73 (electrical components 72) is configured to control, for example, a fan motor 70 and a combustion unit 71. Although not shown, the heat source unit 100 has a harness that connects the circuit board 73 (electrical components 72) to the fan motor 70 and the burner of the combustion unit 71.

[0025] The fan motor 70 is positioned within the housing 10 so as to be located within the first region R1 in a plan view. The combustion section 71 is positioned within the housing 10 so as to be located within the second region R2 in a plan view. Although not shown in Figure 4, the smoke collection section 20 is also located within the second region R2 in a plan view. The electrical components 72 (circuit board 73) and harness are positioned within the housing 10 so as to be located within the first region R1 in a plan view. Although not shown in Figure 4, the heat insulating member 40 is located within the first region R1 in a plan view and does not necessarily overlap with the second region R2.

[0026] (Effects of Heat Source Unit 100) The effects of the heat source unit 100 will be explained below in comparison with the heat source unit in the comparative example.

[0027] Figure 5 is an exploded perspective view of the upper wall 16 of the heat source machine according to the comparative example. As shown in Figure 5, the heat source machine according to the comparative example does not have a reinforcing member 30. Therefore, in the heat source machine according to the comparative example, the heat insulating member 40 is held to the upper wall 16 only by the spindle anchor 60 (not shown in Figure 5). In this respect, the configuration of the heat source machine according to the comparative example differs from the configuration of the heat source machine 100.

[0028] The spindle anchor 60 is attached to the inner wall surface of the upper wall 16 with double-sided tape. Therefore, in the heat source unit according to the comparative example, the adhesive strength of the double-sided tape may decrease over time, causing the heat insulating member 40 to fall off along with the spindle anchor 60. Since the fan motor 70 is located within the first region R1 in a plan view, if the heat insulating member 40 falls off, it may be sucked into the air intake of the fan motor 70, causing the fan motor 70 to malfunction and potentially resulting in combustion failure in the burner of the combustion section 71. Furthermore, if the heat insulating member 40 falls off, water droplets that have formed on the inner wall surface of the upper wall 16 due to condensation caused by the temperature difference between the inside and outside of the housing 10 may fall and adhere to electrical components 72 and harnesses, potentially causing malfunctions such as short circuits.

[0029] In the heat source unit 100, the heat insulating member 40 is not only held to the upper wall 16 by the spindle anchor 60, but is also supported from below by the reinforcing member 30. Therefore, even if the double-sided tape used to attach the spindle anchor 60 deteriorates over time, the falling of the heat insulating member 40 and, consequently, combustion failure in the burner of the combustion section 71 can be suppressed, and short circuits of electrical components 72 and harnesses can also be suppressed. Furthermore, in the heat source unit 100, the combustion section 71 is located within the second region R2 in a plan view, and no electrical components are located there. Therefore, even if water droplets adhere to the inner wall surface of the upper wall 16 in a position overlapping with the second region R2 and fall, a short circuit of electrical components will not occur.

[0030] In the comparative example of a heat source machine, from the viewpoint of cost reduction, the upper wall 16 may be made of a steel plate with a small thickness (more specifically, a thickness of 0.7 mm or less). However, as the thickness decreases, the rigidity of the upper wall 16 decreases, which can cause dents and abnormal noises in the upper wall 16 in the comparative example of a heat source machine. In the heat source machine 100, an insulating member 40 is interposed between the inner wall surface of the upper wall 16 and the reinforcing member 30, and the upper wall 16 is supported from below by the reinforcing member 30. Therefore, even if the upper wall 16 is formed using a steel plate with a small thickness, the occurrence of dents and abnormal noises in the upper wall 16 is suppressed. Furthermore, in the heat source machine 100, as a result of forming the upper wall 16 using a steel plate with a small thickness, the weight of the upper wall 16 is reduced, improving work efficiency during assembly.

[0031] (Note) The above embodiment includes the following configuration:

[0032] <Note 1> The casing and First reinforcing member and Equipped with an insulating material, The housing has a first side wall, a second side wall, a front wall and a back wall extending along a first direction, a bottom wall connected to the lower end of the first side wall, the lower end of the second side wall, the lower end of the front wall and the lower end of the back wall, and an upper wall positioned opposite the bottom wall at a distance in the first direction and connected to the upper end of the first side wall, the upper end of the second side wall, the upper end of the front wall and the upper end of the back wall. The first side wall and the second side wall are positioned opposite each other with a gap between them in a second direction perpendicular to the first direction. The front wall and the back wall are positioned opposite each other with a gap between them in a third direction perpendicular to the first and second directions. A heat source unit in which the first reinforcing member supports the upper wall in a direction from the bottom wall toward the upper wall, with the insulating member interposed between it and the inner wall surface of the upper wall.

[0033] <Note 2> The second reinforcing member, It also includes a smoke collection unit, The upper wall has a through hole formed therein that communicates with the inside of the housing. The second reinforcing member extends along the second direction and has a first end and a second end that are fixed to the inner wall surface of the first side wall and the inner wall surface of the second side wall, respectively, in the second direction. The front wall is fixed to the second reinforcing member. The smoke collecting section has a main body and a cylindrical portion that protrudes from the upper surface of the main body along the first direction, and the cylindrical portion is arranged so that the upper surface of the main body faces the inner wall surface of the upper wall and passes through the through hole. The heat source machine according to Appendix 1, wherein the first reinforcing member extends along the third direction and has a third end fixed to the second reinforcing member in the third direction and a fourth end positioned on the upper surface of the main body.

[0034] <Note 3> Equipped with additional electrical components, The bottom wall is divided in a plan view into a first region and a second region which is further away from the front wall than the first region, along the third direction. The aforementioned electrical components are arranged within the first region in a plan view. The smoke collection unit is located within the second region in a plan view. The heat insulating member is located within the first region in a plan view, and is the heat source unit as described in Appendix 2.

[0035] <Note 4> It also includes a combustion section, The combustion section is located within the second region in a plan view. The heat source machine described in Appendix 3, wherein the combustion gas generated in the combustion section is discharged outside the housing through the cylindrical section.

[0036] <Note 5> Equipped with an additional fan motor, The fan motor is a heat source unit as described in Appendix 3 or Appendix 4, which is located within the first region in a plan view.

[0037] <Note 6> The distance between the first side wall and the second side wall is greater than the distance between the front wall and the back wall. The heat source machine according to any one of the appendices 2 to 5, wherein the first reinforcing member is arranged so as to overlap with the central part of the upper wall in the second direction in a plan view.

[0038] <Note 7> The heat source unit described in any one of the appendices 1 to 6, wherein the aforementioned heat insulating material is sheet-shaped glass wool.

[0039] <Note 8> Spindle anchor and, It also comes equipped with double-sided tape, The heat source machine according to any one of Appendix 1 to Appendix 7, wherein the spindle anchor is attached to the inner wall surface of the upper wall with the double-sided tape and holds the heat insulating member.

[0040] <Note 9> The heat source unit described in any one of the appendices 1 to 8, wherein the upper wall is formed of a plate material with a thickness of 0.7 mm or less.

[0041] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the embodiments described above, and all modifications within the meaning and scope of equivalents of the claims are intended to be included. [Explanation of symbols]

[0042] 10 Housing, 11 Side wall, 12 Side wall, 13 Front wall, 14 Back wall, 15 Bottom wall, 16 Top wall, 16a Through hole, 20 Smoke collection section, 21 Main body section, 21a Top surface, 22 Cylindrical section, 30 Reinforcement member, 40 Heat insulation member, 50 Reinforcement member, 60 Spindle anchor, 70 Fan motor, 71 Combustion section, 72 Electrical components, 73 Circuit board, 100 Heat source unit, DR1 First direction, DR2 Second direction, DR3 Third direction, R1 First region, R2 Second region.

Claims

1. The casing and First reinforcing member and Equipped with an insulating material, The housing has a first side wall, a second side wall, a front wall and a back wall extending along a first direction, a bottom wall connected to the lower end of the first side wall, the lower end of the second side wall, the lower end of the front wall and the lower end of the back wall, and an upper wall positioned opposite the bottom wall at a distance in the first direction and connected to the upper end of the first side wall, the upper end of the second side wall, the upper end of the front wall and the upper end of the back wall. The first side wall and the second side wall are positioned opposite each other with a gap between them in a second direction perpendicular to the first direction. The front wall and the back wall are positioned opposite each other with a gap between them in a third direction perpendicular to the first and second directions. The heat source unit has the first reinforcing member supporting the upper wall in a direction from the bottom wall toward the upper wall, with the insulating member interposed between it and the inner wall surface of the upper wall.

2. The second reinforcing member, It also includes a smoke collection unit, The upper wall has a through hole formed therein that communicates with the inside of the housing. The second reinforcing member extends along the second direction and has a first end and a second end that are fixed to the inner wall surface of the first side wall and the inner wall surface of the second side wall, respectively, in the second direction. The front wall is fixed to the second reinforcing member. The smoke collecting section has a main body and a cylindrical portion that protrudes from the upper surface of the main body along the first direction, and the cylindrical portion is arranged so that the upper surface of the main body faces the inner wall surface of the upper wall and passes through the through hole. The heat source machine according to claim 1, wherein the first reinforcing member extends along the third direction and has a third end fixed to the second reinforcing member in the third direction and a fourth end positioned on the upper surface of the main body.

3. Equipped with additional electrical components, The bottom wall is divided in a plan view into a first region and a second region which is further away from the front wall than the first region, along the third direction. The aforementioned electrical components are arranged within the first region in a plan view. The smoke collection unit is located within the second region in a plan view. The heat source machine according to claim 2, wherein the heat insulating member is arranged within the first region in a plan view.

4. It also includes a combustion section, The combustion section is located within the second region in a plan view. The heat source machine according to claim 3, wherein the combustion gas generated in the combustion section is discharged outside the housing through the cylindrical section.

5. Equipped with an additional fan motor, The heat source machine according to claim 3, wherein the fan motor is located within the first region in a plan view.

6. The distance between the first side wall and the second side wall is greater than the distance between the front wall and the back wall. The heat source machine according to claim 2, wherein the first reinforcing member is arranged so as to overlap with the central part of the upper wall in the second direction in a plan view.

7. The heat source machine according to claim 1, wherein the heat insulating member is a sheet of glass wool.

8. Spindle anchor and, It also comes equipped with double-sided tape, The heat source machine according to claim 7, wherein the spindle anchor is attached to the inner wall surface of the upper wall with the double-sided tape and holds the heat insulating member.

9. The heat source machine according to any one of claims 1 to 8, wherein the upper wall is formed of a plate material with a thickness of 0.7 mm or less.

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