JPH057336Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention mainly relates to an instantaneous water heater.

(Prior Art) Conventionally, as shown in FIG. 16, a hot water outlet pipe 2 connected to a water heater main body 1 is composed of a rigid pipe part 2a having at least a straight part 2a ₂ and a flexible pipe part 2b following this. It is known that the flexible tube part _2b has a tap water outlet 5 formed at its tip. It plays the role of bringing it out to a position (for example, to the front).

In addition, the hot water outlet pipe 2 is made of a metal pipe, and when the hot water tap is touched while the water heater is in use, it becomes hot and the appearance is undesirable. Therefore, the hot water outlet pipe 2 is covered with a resin covered pipe. Also known.

(Problems to be Solved by the Invention) However, the conventional casing pipe 7 has a bellows structure over its entire length so that the flexible pipe portion 2b of the outlet pipe 2, which is the inner pipe, can be bent for convenience during use. Because of this, the user thinks that it is possible to bend the portion of the tap pipe 2 corresponding to the straight portion _2a2 , and tries to bend that portion.

As a result, force is applied to the coupling part 4 between the hot water tap 2 and the water heater main body 1, and the coupling part 4
I don't like it because it can make me feel bad.

The object of the present invention is to obtain a water heater that does not have such inconveniences.

(Means for Solving the Problem) The present invention is proposed in order to achieve the above object, and the water heater according to claim 1 is characterized in that the hot water outlet pipe connected to the water heater body is connected to a rigid pipe part and this water heater. The rigid tube section consists of a curved section on the side of the water heater body and a straight section that follows this, and the flexible tube section has its tip connected to the outlet. In the case where the outlet pipe is covered with a resin covered pipe, the part of the covered pipe corresponding to the curved part of the inner rigid pipe part is a bellows part, and the inner rigid pipe part is covered with a bellows part. The water heater according to claim 2 is characterized in that a portion corresponding to the straight portion of the water heater is made into a non-bellows portion, and a portion corresponding to the internal flexible pipe portion is made into a bellows portion. The pipe is composed of a rigid pipe part and a flexible pipe part following the rigid pipe part, the rigid pipe part consists of a straight part, and the flexible pipe part has its tip formed as a tap hole, In the case where the hot water tap is covered with a resin covered pipe, the inner part of the covered pipe corresponding to the rigid pipe part has a non-bellows part, and the inner part corresponding to the flexible pipe part has a bellows part. The water heater according to claim 3 is characterized in that, in the water heater according to claim 1 or 2, the non-concert part of the covered pipe is made into a straight part, and the water heater according to claim 4 is characterized in that the water heater according to claim 4 is the water heater according to claim 1. Or, in the water heater of claim 2, the non-concert part of the covered pipe is a straight part having a plurality of protrusions extending inwardly in the longitudinal direction provided at appropriate intervals on the inner circumferential surface, The water heater of claim 5 is defined as claim 1 or claim 2.
In the water heater according to claim 6, the non-concert part of the covered pipe is a straight part having a spiral protrusion provided on the inner circumferential surface, and the water heater according to claim 6 is the water heater according to claim 1 or claim 2.
In the water boiler according to claim 7, the non-concert part of the covered pipe is a straight part having a plurality of protrusions projecting inward in the circumferential direction provided at appropriate intervals on the inner circumferential surface, The water heater according to claim 1 or claim 8 is characterized in that the non-concert part of the covered pipe is a straight part having a plurality of protrusions provided at appropriate intervals on the inner circumferential surface, and the water heater according to claim 8 is The hot water outlet pipe connected to the water heater body is composed of a rigid pipe section having a straight section at least on the tip side and a flexible tube section following this, and a hot water outlet is formed at the tip of the flexible tube section. In the case where the hot water outlet pipe is covered with a resin covered pipe, the covered pipe is covered with at least a portion of the rigid pipe portion inside the pipe corresponding to the straight portion and a flexible pipe portion inside the pipe. It is characterized by color-coded parts.

(Function) The present invention has the above configuration, and according to the water heater according to claims 1 to 7, the bellows part and the non-bellows part of the covered pipe that covers the hot water outlet pipe allow the user to bend the water heater. You can tell at a glance what parts are possible and which parts are impossible.

Furthermore, according to the water heaters of claims 4 and 7, the non-concert part of the covered pipe contacts the hot water outlet pipe via the protrusion or protrusion, so that heat is transferred to the circumferential surface of the non-concert part of the covered pipe. can be reduced, and there is no wobbling.

According to the water heater according to the eighth aspect, the cover pipe that covers the hot water outlet pipe is color-coded, so that the user can distinguish at a glance the bendable portion and the unbendable portion.

(Example) Next, an example of implementing the present invention will be explained using a stop-type instantaneous water heater.

In FIG. 1, reference numeral 1 indicates the water heater body, and 2 indicates a hot water outlet pipe protruding from the bottom surface of the water heater body. It is composed of a rigid tube section 2a shown in FIG. 2 connected to the lower end via a coupling section 4, and a flexible tube section 2b following this, and an outlet 5 is formed at the tip of the flexible tube section 2b. In the illustrated example, the outlet 5
A shower head 6 provided at the tip of the flexible tube portion 2b.
(as shown in FIG. 12), and the rigid tube section 2a is made up of a curved section 2a ₁ and a straight section 2a ₂ that extends to the flexible tube section 2b.

The present invention is for covering the tapping pipe 2 with a covered pipe 7 made of polypropylene or other resin.
As shown in FIG. 3, the bellows portion 7b corresponding to the flexible tube portion _{2b, the bellows portion 7a1 corresponding} to the curved portion 2a1 of the rigid tube portion 2a, and the straight shape of the rigid tube portion 2a. It has a straight part 7a ₂ corresponding to part 2a ₂ ,
To explain this in detail, as shown in FIG. The straight part 7a ₂ of is shaped as shown in Fig. 5,
As shown in FIG. 6, the bellows portion _7a1 of the covered pipe 7 was formed into a shape in which steep peaks C and valleys D continued alternately.

When doing so, the user determines that the inside of the bellows part 7b is a bendable part of the hot water tap 2, and bends that part to make it easier to use, but the inside of the straight part _7a2 is a bendable part of the hot water tap 2. Therefore, the coupling portion 4
Power is added to it, and there is no harm to it.

In the above-mentioned embodiment, since the bellows part _7a1 is on the root side of the casing 7, with the shower head 6 removed, the casing 7 is moved from the end on the root side to the end on the tip side of the hot water tap 2. It is easy to pass the hot water tap when it is inserted into the tap and sequentially covers the hot water tap 2.

In this embodiment, since the angle of the curved portion 2a ₁ of the tapping pipe 2 is about 90 degrees, the end of the cladding 7 on the root side easily passes through the curved portion 2a ₂ , and furthermore, the cladding 7 can be removed after insertion. In order to prevent cracks from occurring at this curved portion 2a _1, the root side of the cover pipe 7 is formed into a steep mountain C that is particularly different from the bellows portion 7b as described above.
The bellows part _7a1 is made up of alternately continuous valleys D and valleys D.

In the above-described embodiment, the straight portion _7a2 of the casing tube 7 has a simple planar shape over its entire length on both the inner and outer surfaces. In this case, the inner diameter of the straight part _7a2 may be made slightly larger than the outer diameter of the tapping pipe 2a so that they are in close contact with each other, but in this case, the heat transfer area to the casing pipe 7 is wide and heat is easily transmitted. To prevent this from happening, it is recommended that the inner diameter of the straight portion _7a2 be slightly larger than the outer diameter of the tapping pipe 2a to create a space between them. However, even with this, a large contact area is created, which tends to transfer heat, and is also undesirable as it tends to cause looseness, so as shown in Figure 7,
Straight portion 7a ₂ having a plurality of protrusions E extending inwardly in the longitudinal direction and provided at appropriate intervals on the inner circumferential surface.
As shown in FIG. 8, a straight portion _7a2 having a plurality of protrusions F projecting inward in the circumferential direction provided at appropriate intervals on the inner circumferential surface, or as shown in FIG. A straight part _7a2 having a spiral protrusion G provided on the circumferential surface, or
As shown in Fig. 1, if the straight part _7a2 has a plurality of protrusions H provided at appropriate intervals on the inner circumferential surface, the straight part _7a2 can be connected to the outlet pipe only through the protrusions E, F, G or the protrusions H. 2, so heat transfer to the straight part 7a ₂ can be reduced while the water heater is in use.
Moreover, there is no rattling. It is desirable that the spacing shown in FIG. 8 is, for example, about 3 cm to prevent the straight portion _7a2 from bending. In the embodiment shown in FIG. 10, a dent is formed on the outer surface of the straight portion _7a2 , but it is preferable that this dent be made large in diameter so that it can be easily cleaned.

Fig. 12 shows another embodiment in which the part covering the straight part _2a2 of the rigid tube part 2a also has a bellows structure, and in this case, the part of the bellows structure corresponding to the straight part _2a2 is colored. As the bellows part 7c, the part that covers the flexible pipe 2b of the bellows pipe 7 and the part that covers the straight part _2a2 of the pipe 2a are color-coded, and the part that can be bent and the part that cannot be bent are similarly distinguished. I made it possible to distinguish between impossible parts. Note that the portions of the rigid tube portion 2a that correspond to the straight portion 2a ₂ and the curved portion 2a ₁ may be colored to be color-coded.

In the above-described embodiment, the tip of the cover tube 7 is inserted into the shower head 6, and in this case, the first end is inserted into the shower head 6.
As shown in FIG. 3, a convex portion 8 that is continuous or discontinuous is formed in the circumferential direction on the circumferential surface of the tip of the cover tube 7, and a convex portion that is continuous or discontinuous in the circumferential direction is also formed on the edge of the insertion opening of the shower head 6. 9 is formed, and play is provided between both convex portions 8 and 9 by a gap I to absorb movement when the cladding tube 7 is bent and stretched. According to this, since the convex part 8 at the tip of the cover tube 7 comes into contact with the convex part 9 of the shower head 6, it is difficult to come off and is also favorable in terms of appearance.

In FIG. 13, 10 indicates an O-ring for sealing.

In addition, in the above-mentioned embodiment, the rigid pipe part 2 of the tapping pipe 2
A has a curved portion 2a ₁ , but if the hot water outlet pipe 2 protrudes from the front surface of the water heater body 1, the curved portion 2a ₁ may not be present as shown in Fig. 14, and in this case In this case, all the parts of the tube casing 7 corresponding to the rigid pipe part 2a should be made into a simple straight part _7a2 as shown in Fig. 15, or the parts shown in Figs. You can do it like this.

In the above-mentioned embodiment, the outer surface of the straight portion _7a2 of the cladding tube 7 is also formed with unevenness corresponding to the inner surface, but the ridges, protrusions, etc. are provided only on the inner surface, and the outer surface has a simple planar shape. It's good as well. In this case, a pattern such as a flower pattern may be applied to the outer surface.

The above-mentioned embodiment is a so-called shut-off type water heater in which a built-in gas burner (not shown) is ignited and a water valve (not shown) opens to dispense hot water when the operating knob 11 is operated. It is not limited to.

(Effect of the invention) As described above, when using the water heater according to claims 1 to 8, the boundary between the rigid pipe part and the flexible pipe part of the internal hot water outlet pipe can be seen by looking at the covered pipe. There is no possibility of making a mistake such as curving the straight part of the rigid pipe part of the water heater, which causes the inconvenience in the conventional water heaters such as damaging the coupling part between the water heater body and the hot water outlet pipe. Never.

Furthermore, when using the water heater according to claims 4 to 7, it is possible to reduce heat transfer from the outlet pipe to the circumferential surface of the straight part of the casing pipe, and moreover, no rattling occurs.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of the implementation of the present invention, Fig. 2 is a side view of the outlet pipe, Fig. 3 is a side view of the covered pipe, and Fig. 4 is the bellows on the tip side of the covered pipe. Fig. 5 is a cut-away side view of the straight part of the sheathing pipe, Fig. 6 is a cut-away side view of the bellows portion on the root side of the sheathing pipe, and Fig. 7 is a cut-away side view of the straight part of the sheathing pipe. FIG. 8 is a perspective view showing another second embodiment of the straight part, FIG. 9 is a perspective view showing another third embodiment of the straight part, and FIG. 10 is a perspective view of the straight part. A perspective view showing another fourth embodiment, No. 11
The figure is a cross-sectional view showing the relationship between the straight part and the tapping pipe in Fig. 10, Fig. 12 is a schematic side view showing another embodiment of the present invention, and Fig. 13 is an embodiment of the embodiment shown in Figs. 1 and 12. Fig. 14 is a side view showing another embodiment of the outlet pipe; Fig. 15 is a side view showing another embodiment of the covering pipe; FIG. 16 is a side view of the water heater before pipe lining is applied. DESCRIPTION OF SYMBOLS 1... Water boiler body, 2... Hot water outlet pipe, 2a... Rigid pipe part, 2a ₂ ... Straight part, 2b... Flexible pipe part, 5...
...Outlet, 7...Shelled pipe, 7b...Bronze part, 7a ₂ ...
...Straight section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hot water outlet pipe connected to the water heater main body is composed of a rigid pipe section and a flexible pipe section following this, and the rigid pipe section is connected to a curved section on the water heater main body side. and a straight part following this, the tip of the flexible pipe part is formed as a tap outlet, and the tap pipe is covered with a resin covered pipe, in which the covered pipe is The part corresponding to the curved part of the internal rigid tube part is a bellows part, and the part corresponding to the straight part of the internal rigid pipe part is a non-concert part.
A water heater characterized in that a portion corresponding to the flexible tube inside the water heater has a bellows part. 2. The hot water outlet pipe connected to the water heater body is composed of a rigid pipe part and a flexible pipe part following this, the rigid pipe part consists of a straight part, and the flexible pipe part has its tip connected to the tap water outlet. The outlet pipe is covered with a resin jacketed pipe, and the part of the jacketed pipe corresponding to the inner rigid pipe part is a non-concert part, and the inner flexible pipe is A water heater characterized by having a corresponding part with a bellows part. 3. The water heater according to claim 1 or 2, wherein the non-concert portion of the covered pipe is a straight portion. 4. The water boiler according to claim 1 or claim 2, wherein the non-concert portion of the shelving pipe is a straight portion having a plurality of longitudinally protruding inward protrusions provided at appropriate intervals on the inner circumferential surface. vessel. 5. The water heater according to claim 1 or 2, wherein the non-concert portion of the covered pipe is a straight portion having a spiral protrusion provided on the inner circumferential surface. 6. The water boiler according to claim 1 or claim 2, wherein the non-concert portion of the covered pipe is a straight portion having a plurality of protrusions projecting inward in the circumferential direction provided at appropriate intervals on the inner circumferential surface. vessel. 7. The water heater according to claim 1 or 2, wherein the non-concert portion of the covered pipe is a straight portion having a plurality of protrusions provided at appropriate intervals on the inner circumferential surface. 8. The hot water outlet pipe connected to the water heater body is composed of a rigid tube section having a straight section at least on the tip side and a flexible tube section following this, and a hot water outlet is formed at the tip of the flexible tube section. In the case where the hot water outlet pipe is covered with a resin covered pipe, the covered pipe is covered with at least a portion of the rigid pipe portion inside the pipe corresponding to the straight portion and a flexible pipe portion inside the pipe. A water heater characterized by color-coded parts.