JP7100287B2 - Hot water unit - Google Patents

Description

The present invention relates to a hot water unit such as a water heater unit in which hot water related equipment is housed in an outer case and unitized.

As an example of the hot water unit, there is one described in Patent Document 1.
In the hot water unit described in the same document, an opening for pulling out a pipe is provided in an outer case that houses a hot water-related device such as a water heater, and this opening is a cover as a case wall. It is blocked by a member. However, the cover member is provided with a plurality of slits in an arrangement in which they are intermittently arranged, and a region below the plurality of slits is a resectable region. This excisable region is connected to the base region above the plurality of slits via a connection portion located between the plurality of slits, and can be excised from the base region by cutting the connection portion. be. By excising this resectable area, a part of the opening can be opened, and the piping member for hot water flow can be pulled out from the inside to the outside of the outer case through this portion.
According to such a configuration, it is possible to easily select either a state in which the entire opening is closed or a state in which a part thereof is opened. Therefore, when the hot water unit is installed by the so-called knockdown method (on-site assembly method), it is possible to provide excellent flexibility.

However, in the above-mentioned prior art, there is still room for improvement as described below.

That is, when cutting the cuttable area from the cover member, the connection portion is cut using a cutting tool such as nippers. Therefore, in a state where the resectable region is excised from the base region of the cover member, the cut surface of the connecting portion is generated on the end surface of the edge portion of the base region. Burrs are likely to occur on this cut surface. Therefore, if the cut surface is touched by a worker or a user who installs the hot water unit, there is a risk of injury.

Japanese Unexamined Patent Publication No. 58-66747

The present invention has been conceived under the above-mentioned circumstances, and is a hot water unit capable of appropriately suppressing the generation of burrs on the cut surface when a cuttable area is cut. The challenge is to provide.

In order to solve the above problems, the following technical means are taken in the present invention.

The hot water unit provided by the present invention includes an exterior case for internally accommodating hot water-related equipment having a hot water generation function or a hot water storage function, and a plurality of intermittently provided on the case wall portion of any one of the outer cases. The case wall portion is provided in a state of being partitioned from the base region, which is another region, via the slits, and is connected to the base region via a connecting portion located between the plurality of slits. A hot water unit comprising a resectable region, wherein the connection is configured such that the first end on the base region side is narrower than the second end on the resectable region side. It is characterized by being said to be.

With such a configuration, the following effects can be obtained.
That is, when the connection portion connecting the resectable region and the base region of the case wall portion is cut by using a cutting tool, if the connection portion is cut at the first end portion on the base region side of the connection portion, the cut surface thereof is cut. The area of can be reduced. Therefore, it is possible to prevent large burrs from being generated on the cut surface. Further, if the width of the first end portion of the connecting portion is narrowed, it becomes easy to cut this portion, and this also can be expected to have the effect of making it difficult for large burrs to occur on the cut surface. As a result, according to the present invention, it is possible to appropriately suppress injuries caused by burrs on the cut surface formed in the base region.
On the other hand, since the width of the second end portion of the connecting portion is wider than the width of the first end portion, the strength of the connecting portion is higher than that of the configuration in which the width is narrowed over the entire length of the connecting portion. can do. Therefore, in a state where the resectable region is not excised from the base region, it is possible to firmly connect these base regions and the resectable region.

In the present invention, preferably, both side edges or one side edge of the connection portion is inclined with respect to the opposite direction of the first and second ends, and the width of the connection portion is the first. It is configured to gradually decrease as it advances from the end of 2 toward the first end.

According to such a configuration, when the connection portion is cut by using a cutting tool such as nippers, the side edge portion is cut when the cutting edge of the cutting tool abuts on the inclined side edge portion of the connection portion. The action of guiding the cutting edge of the tool to the first end side of the connecting portion can be expected. Therefore, it becomes easier to cut the first end portion of the connecting portion smoothly and naturally, which is more preferable in suppressing the occurrence of large burrs on the cut surface.

In the present invention, preferably, the first end portion of the connection portion is formed with a notched recess that partially narrows the width of the first end portion.

According to such a configuration, by cutting the connection portion at the position of the notch recess, the cut surface can be made smaller and burrs can be less likely to occur.

In the present invention, preferably, the notch recess is provided so as to notch a part of the base region in addition to the first end portion.

According to such a configuration, when the connection portion is cut at the position of the notch recess, a part of the notch recess is present next to the cut surface formed in the base region. This makes it possible to make it more difficult for burrs to occur on the cut surface of the base region.

In the present invention, preferably, the exterior case includes an opening for passing a piping member or an electrical wiring member, and a cover member for closing the opening, and the cover member covers the resectable area and the cuttable area. The case wall portion provided with the base region.

According to such a configuration, the opening for pulling out the piping member or the electrical wiring member from the inside to the outside of the outer case is selectively set to either a state of being closed by the cover member or a state of being opened. It becomes possible to do.

Other features and advantages of the invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

(A) is a rear perspective view showing an example of a hot water unit according to the present invention, and (b) is a front perspective view thereof. FIG. 2 is a sectional view taken along line II-II of FIG. 1 (a). FIG. 3 is a rear perspective view showing an example of a state in which the specifications of the hot water unit shown in FIG. 1 have been changed. FIG. 3 is a sectional view taken along line IV-IV of FIG. (A) is a front view of the cover member of the outer case of the hot water unit shown in FIG. 1, (b) is a sectional view taken along the line Vb-Vb of (a), and (c) is a Vc of (a). It is an enlarged front view of a part. (A) is a front view showing a state in which a resectable region of the cover member shown in FIG. 5 is excised. It is a rear perspective view which shows the other example of this invention. (A) is a front view of a main part showing another example of the present invention, and (b) is a front view of a main part in a state where the connection part having the configuration shown in (a) is disconnected. (A) and (b) are front views of the main part showing another example of the present invention. (A)-(c) are the front view of the main part which shows the other example of this invention. (A) is a perspective view showing another example of the present invention, (b) is a sectional view taken along the line XIb-XIb of (a), and (c) is an enlarged plan view of a main part of (a). be. It is sectional drawing which shows the state which cut | cut the cutable area of the cover member shown in FIG. It is a front view which shows the other example of this invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

The hot water unit U shown in FIG. 1 includes an exterior case 1 including a cover member 2, and as is often shown in FIG. 2, the exterior case 1 contains a hot water storage tank 3, an auxiliary heat source machine 4, and a control. The part 5 is housed.

The hot water storage tank 3 and the auxiliary heat source machine 4 correspond to specific examples of the hot water-related equipment in the present invention. The hot water unit U corresponds to a hot water storage type hot water supply device used in combination with a main heat source machine (not shown) such as a heat pump, and the hot water storage tank 3 is a device for storing hot water heated by the main heat source machine. be. The auxiliary heat source machine 4 is a device for heating the hot water when the temperature of the hot water discharged from the hot water storage tank 3 is less than the desired hot water supply target temperature, and is, for example, the combustion generated by the burner 40 and the burner 40. It is equipped with heat exchangers 41 and 42 for heating hot water by recovering heat from the gas, and an exhaust collecting cylinder 44 for guiding the combustion gas after heat recovery to the exhaust port 43 and discharging it to the outside of the outer case 1. ing. The control unit 5 is configured by using a microcomputer or the like, and executes operation control and data processing control of each unit of the hot water unit U.

The outer case 1 has an internal hollow shape having a plurality of panel-shaped case wall portions 10 (10a to 10f) formed by using, for example, a colored steel plate having a painted surface, and is a vertically long rectangular cuboid. It is an appearance form in which the lower part on the front side is recessed. However, the overall shape of the exterior case 1 is not limited to this. Specific examples of the plurality of case wall portions 10 include a first front wall portion 10a provided with an exhaust port 43, a second front wall portion 10b located behind the first front wall portion 10a, and the first and second portions thereof. There are a rear wall portion 10c facing the front wall portions 10a and 10b, left and right side wall portions 10d, an upper wall portion 10e, and an intermediate bottom wall portion 10f. As will be described later, the cover member 2 is attached to the rear wall portion 10c by means such as screwing. This cover member 2 is also included in the concept of the case wall portion.
In the drawings, reference numeral 19 indicates a lower portion of the front frame of the exterior case 1, and reference numeral 88 indicates a base member.

In this hot water unit U, as shown in FIG. 2, a plurality of piping members 60 for hot water distribution can be pulled out in front of the second front wall portion 10b (in FIG. 1B). omit). The plurality of piping members 60 are, for example, a piping section for entering water into the hot water storage tank 3, a piping section for discharging hot water from the auxiliary heat source machine 4, and a piping member for connecting to the main heat source machine. However, an opening 11 for pulling out the pipe is provided in the lower portion of the rear wall portion 10c of the hot water unit U, and the opening 11 is covered by the cover member 2. This makes it possible to pull out all or part of the plurality of piping members 60 from the opening 11 to the rear of the exterior case 1, as will be described later.

Like the other case wall portions 10 of the exterior case 1, the cover member 2 is made of a metal plate such as a colored steel plate.
More specifically, as is often shown in FIG. 5, the cover member 2 is provided with a plurality of elongated slits 23 in an intermittent arrangement. These plurality of slits 23 are, for example, substantially Π-shaped in front view. Of the cover member 2, the region surrounded by the plurality of slits 23 is the resectable region 21, and the other region is the base region 20. The base region 20 is provided with a hole 28 for screwing.

In the cover member 2, each of the mutual regions of the plurality of slits 23 is a connecting portion 24, and the resectable region 21 and the base region 20 are connected to each other via the plurality of connecting portions 24. As is often shown in FIG. 5 (c), each connection portion 24 has a front view table shape, and the width La of the first end portion 24a on the base region 20 side is the second on the resectable region 21 side. It is made smaller than the width Lb of the end portion 24b of. The both side edge portions 24c of the connecting portion 24 are inclined by an appropriate angle α with respect to the facing directions of the first and second end portions 24a and 24b.
In the cover member 2, by cutting each of the plurality of connecting portions 24 with a cutting tool such as nippers, the cuttable region 21 can be easily cut from the base region 20 as shown in FIG. It is possible.

Next, the operation of the hot water unit U described above will be described.

First, when installing the hot water unit U, due to various circumstances, unlike the construction mode of the plurality of piping members 60 shown in FIG. 2, all or part of the plurality of piping members 60 are pulled out to the rear of the exterior case 1. I may want to. In this case, as described with reference to FIG. 6, the cover member 2'(only the base region 20) in which each connection portion 24 of the cover member 2 is cut and the cuttable region 21 of the cover member 2 is cut off. State). By attaching the cover member 2'to the rear wall portion 10c of the exterior case 1, as shown in FIGS. 3 and 4, the opening 11 can be opened with an appropriate opening area, and the opening 11 can be opened. All or part of the plurality of piping members 60 can be pulled out to the rear of the exterior case 1 via the above. Therefore, the flexibility of the piping construction work is excellent.

When the connection portion 24 of the cover member 2 is cut with a cutting tool, the first end portion 24a on the base region 20 side is cut so that the virtual line C in FIG. 5C is used as the cutting line, for example. Preferably, the position as close to the base region 20 as possible is cut. As a result, as shown in FIG. 6, the cut surface 25 formed in the base region 20 has a dimension La or a narrow width close to the dimension La, and has a small size. Here, if the cut surface 25 has a small size, the size of burrs generated on the cut surface 25 can also be reduced, and it is possible to prevent injuries when the cut surface 25 is touched by a hand. be.

Since the side edge portion 24c of the connecting portion 24 is inclined, an effect of facilitating cutting of the first end portion 24a on the base region 20 side can be expected when cutting the connecting portion 24. That is, when the cutting edge of the cutting tool abuts on the side edge portion 24c of the connection portion 24, for example, as shown by the arrow Na in FIG. Due to the tilt, the cutting edge of the cutting tool slides and is guided toward the first end 24a of the connecting portion 24, as indicated by the arrow Nb. As a result, the worker naturally cuts the first end portion 24a of the connecting portion 24. From such a thing, it is more appropriately eliminated that a large burr is generated by unreasonably cutting the second end portion 24b side. In the present embodiment, both side edge portions 24c of the connecting portion 24 are formed in an inclined shape, but only one of the side edge portions 24c is formed in an inclined shape and the other is formed in a non-inclined shape. You can also do it.

Since the width of the second end portion 24b of the connecting portion 24 is relatively large, it is possible to secure the strength of the connecting portion 24 itself. Unlike the present embodiment, if the entire connecting portion 24 has a narrow width of the dimension La, the strength of the entire connecting portion 24 may decrease, but according to the present embodiment, such a possibility may occur. It is possible to avoid. When the entire connecting portion 24 has a large width of the dimension Lb, the cut surface 25 of the connecting portion 24 has a large size and large burrs are likely to occur. As already mentioned, the problem will be resolved.

7 to 13 show other embodiments of the present invention. In these figures, the same or similar elements as those in the embodiment are designated by the same reference numerals as those in the embodiment, and duplicate description will be omitted.

In the hot water unit Ua shown in FIG. 7, a plurality of slits 23 and connection portions 24 are formed on the rear wall portion 10c of the exterior case 1, and a resectable region 21B is directly provided. The cover member 2 of the above embodiment is not used, and the region of the rear wall portion 10c other than the resectable region 21B is the base region 20B.

In the present embodiment, when the resectable region 21B is not excised from the base region 20B of the posterior wall portion 10c, the opening is not formed in the posterior wall portion 10c. On the other hand, when the resectable region 21B is excised, the excised region becomes an opening. Therefore, it is possible to pass the piping member 60 through this opening.
As can be understood from the present embodiment, the resectable area is provided directly on the fixed case wall portion of the outer case instead of being provided on the cover member (case wall portion) attached to the outer case. It can also be configured.

In the embodiment shown in FIG. 8A, the side edge portions 24c of the connecting portion 24 are not inclined with respect to the opposite directions of the first and second end portions 24a and 24b. However, the notch recess 27 is formed in the first end portion 24a, whereby the width La of the first end portion 24a is made smaller than the width Lb of the second end portion 24b. ..

In the present embodiment, when the first end portion 24a is cut, the size of the cut surface 25 can be reduced as shown in FIG. 8B, and the burr can be reduced in the same manner as in the above embodiment. It is possible to suppress the occurrence. Further, if the notch recess 27 is formed in the connection portion 24, the effect of urging the operator to cut the connection portion 24 at the position of the notch recess 27 can be expected, and the position closer to the second end portion 24b can be expected. It is also possible to eliminate or reduce the risk of being cut by.
As understood from the present embodiment, in the present invention, as a means for narrowing the width of the first end portion of the connecting portion, a means for providing a notched recess at the first end portion may be adopted. can.

In the embodiment shown in FIG. 9A, one side surface 27b of the notch recess 27 formed in the first end portion 24a of the connecting portion 24 is inclined. With such a configuration, the effect of facilitating the smooth entry of the cutting edge of the cutting tool into the notch recess 27 can be expected.
In the embodiment shown in FIG. 9B, a notch recess 27 for narrowing the width of the first end 24a of the connection portion 24 is provided so as to cut out a part of the base region 20 as well. There is. According to such a configuration, when the first end portion 24a is cut, both sides of the cut surface are recessed. This makes it possible to make it more difficult for burrs to occur on the cut surface.

In the embodiment shown in FIGS. 10 (a) and 10 (b), both side edge portions 24c of the connecting portion 24 or one of them is formed in an inclined shape, and the connecting portion 24 has FIGS. 8 and 9 A notch recess 27 similar to that shown in is provided. According to such a configuration, it is possible to further ensure that the connecting portion 24 is cut at the first end portion 24a.
In the embodiment shown in FIG. 10 (c), the notch recess is not formed in the connection portion 24, and the notch recess 27a is formed on both sides of the first end portion 24a in the base region 20. There is. In the present invention, such a configuration can be adopted, and the presence of the notch recess 27a can be expected to have an effect of further preventing burrs from being generated on the cut surface of the connecting portion 24.

In the embodiment shown in FIG. 11, the cover member 2A is configured as a stepped plate material having a step between the base region 20 and the removable region 21, and the base region 20 and the resectable region 21 are formed. Is connected to the base region 20 via a stepped wall portion 22 bent so as to project forward from the cover member 2A. A plurality of slits 23 and a connecting portion 24 are formed in the stepped wall portion 22.

In the present embodiment, as shown in FIG. 12, when the connection portion 24 is cut to cut the resectable region 21 from the base region 20, the cut surface 25 is one side surface 20b of the base region 20 or one of them. It will be located at the tip of the protruding portion 22c that protrudes forward from the side surface 20b. Therefore, it becomes difficult for the worker's hand to touch the cut surface 25, and it is possible to more reliably prevent the risk of injury to the hand. Further, the end surface 20a of the base region 20 can be a smooth surface, and even if the end surface 20a is touched by a hand, injury can be prevented.
As described above, in the present invention, the base region 20 and the resectable region 21 may be configured to have a step.

In the embodiment shown in FIG. 13, a plurality of slits 23 and connecting portions 24 are provided side by side substantially horizontally from one end portion to the other end portion in the left-right lateral width direction of the cover member 2C. Of the cover member 2C, the entire upper region of the plurality of slits 23 and the connecting portion 24 is the base region 20, and the entire lower region is the resectable region 21.
In the present invention, the arrangement of the plurality of slits and the connecting portions may be linear as in the present embodiment instead of the above-mentioned substantially Π-shaped front view, and the specific shape thereof is not limited. .. The plurality of slits and connections may be circular in front, rectangular, or looped in any other shape.

The present invention is not limited to the contents of the above-described embodiments. The specific configuration of each part of the hot water unit according to the present invention can be variously redesigned within the scope of the present invention.

The plurality of slits may be provided intermittently so as to partition the base region and the resectable region, and the specific shape, size, arrangement pitch, and the like thereof are not limited. A slit generally means a narrow hole portion, but in the present invention, a relatively wide hole portion is also included in the concept of a slit.
The connection portion formed between the plurality of slits may have a form in which the width of the first end portion on the base region side is narrower than the width of the second end portion on the resectable region side. As the configuration for that purpose, it is possible to use a configuration different from that exemplified in the above-described embodiment.

In the above-described embodiment, the cover members 2, 2A, 2C attached to the rear wall portion 10c of the exterior case 1 or the rear wall portion 10c are provided with the removable regions 21 and 21B. The present invention is not limited to this, and can be applied to the other wall portion 10 of the exterior case 1. To give a specific example, for example, when a plurality of slits 23 and a connection portion 24 are formed in the intermediate bottom wall portion 10f of the exterior case 1 to provide a resectable region, and the resectable region is resected, this resectable region is provided. As a result, an opening may be formed in the intermediate bottom wall portion 10f. In this case, it is possible to pass an electric wiring member (harness) connected to the control unit 5 through this opening.
The case wall portion of the exterior case referred to in the present invention is not limited to the wall portion constituting the main body portion of the exterior case, but also includes a wall portion (such as a cover member of the exterior case) provided attached to the main body portion of the exterior case. Is.

The hot water-related device in the present invention means a device having a hot water generation function or a hot water storage function, but the specific type and number thereof are not limited. In addition to hot water storage tanks and instantaneous water heaters, hot water-related equipment also includes, for example, heat homps and cogeneration system equipment. Therefore, the hot water unit according to the present invention can be configured as, for example, a hot water storage tank unit, a water heater unit, a heat pump unit, a cogeneration system, or the like.

U, Ua Hot water unit 1 Exterior case 10c Rear wall (case wall)
11 Openings 2, 2A, 2C Cover member (case wall)
20 Base area 21 Resectable area 23 Slit 24 Connections 24a, 24b First and second ends (of the connection)
24c Side edge (of connection)
25 Cut surface 3 Hot water storage tank (hot water related equipment)
4 Auxiliary heat source machine (hot water related equipment)

Claims (5)

An exterior case that houses hot water-related equipment that has a hot water generation function or hot water storage function,
The plurality of slits provided intermittently in any of the case walls of the exterior case are provided in a state of being separated from the base region, which is another region of the case wall, and the plurality of slits are provided. A resectable area connected to the base area via a connection located between the slits,
It is a hot water unit equipped with
The hot water unit is characterized in that the first end portion on the base region side is narrower than the second end portion on the resectable region side. The hot water unit according to claim 1.
Both side edges or one side edge of the connection is inclined with respect to the opposite direction of the first and second ends, and the width of the connection is from the second end to the second end. A hot water unit that is configured to gradually decrease as it progresses toward the end of 1. The hot water unit according to claim 1 or 2.
A hot water unit having a notched recess formed in the first end of the connecting portion to partially narrow the width of the first end. The hot water unit according to claim 3.
The notch recess is a hot water unit provided so as to notch a part of the base region in addition to the first end portion. The hot water unit according to any one of claims 1 to 4.
The outer case includes an opening for passing a piping member or an electrical wiring member, and a cover member for closing the opening.
A hot water unit in which the cover member is the case wall portion including the resectable region and the base region.

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