JP2606569Y2 - Hot water inflow prevention mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water inflow prevention mechanism capable of instantaneously stopping the outflow to the downstream side when the inflow of hot water into a flow passage is caught.

[0002]

2. Description of the Related Art Conventionally, for example, as one form of a water conditioner,
As shown in FIGS. 10 and 11, a raw water pipe 90 for supplying raw water to a downstream water purifier or an electrolytic cell is provided in the middle of a raw water pipe 90 so as to prevent bacteria and the like from flowing into a tap water supply unit on the upstream side. Check valve 82 and constant flow valve 83 provided to secure a steady flow
And a hot water inflow prevention mechanism for preventing the inflow of heated water having a set temperature or higher into the water conditioner at the downstream side thereof.
Some have 84 attached.

[0003] The hot water inflow prevention mechanism 84 is shown in FIG.
As shown in FIGS. 10 and 11, a cylindrical casing 84a protruding from the orthogonal direction in the middle of the raw water pipe 90,
Communication holes 81b and 81h provided at the base end and side portions forming the projecting side of 84a, outflow holes 81c provided at the distal end side, and a heat deformation spring 81 made of a shape memory alloy or the like in a cylindrical casing 81a.
and a valve shaft 81j having a bias spring 81e mounted on the outer periphery thereof and valve bodies 81f and 81g attached to both ends, respectively.

[0004] With this configuration, the raw water always flows through the raw water pipe 90 through the communication holes 81b and 81h and is supplied to the water purifier.

On the other hand, when hot water flows into the cylindrical casing 84a, the hot deformation spring 81d is deformed and the valve shaft 81j
Is moved upward, the communication hole 81b is closed by the valve element 81f, the outflow hole 81c is opened, and the outflow hole 81c is opened.
can be discharged outside through c.

[0006]

However, the hot water inflow prevention mechanism 84 has the following problems to be solved.

That is, the thermal deformation of the thermal deformation spring 81d is as follows.
This does not occur at the same time as the hot water flows into the cylindrical casing 84a. The communication hole 81b is closed by the valve body 81f by the thermal deformation of the thermal deformation spring 81d, and the outflow hole
It will take some time for 81c to open. For this reason, a part of the hot water flowing into the cylindrical casing 84a also enters the water purifier, causing heat damage.

An object of the present invention is to provide a hot water inflow prevention mechanism capable of solving the above-mentioned problems.

[0009]

In the present invention, an inflow side communication hole communicating with the upstream side of the flow path and an outflow side communication hole communicating with the downstream side of the flow path are formed, respectively. A long lever with its base end fixed to and connected to the inner wall of the flow path is provided, and deforms when hot water flows in from the inflow side communication hole, and presses near the base end side of the lever to flow out The present invention relates to a hot water inflow prevention mechanism, wherein a heat deformation spring for closing the side communication hole with a valve body is provided in the inflow side communication hole.

According to the present invention, there is further provided a bias spring for constantly biasing the lever in the opening direction of the outflow-side communication hole in the above-described structure. Is moved in either direction to use a spring capable of closing the flow path.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot water inflow prevention mechanism according to the present invention is provided with a water conditioner A.
Hereinafter, a specific description will be given with reference to an example applied to the flow path.

FIG. 1 shows a water conditioner A having a hot water inflow prevention mechanism according to the present invention mounted on a sink B of a system kitchen, and FIG. Is shown.

As shown in FIG. 2, a water conditioner A includes a water purifier 11 and a calcium tank 12 inside a casing 10 thereof.
, An electrolytic cell 13 and a control unit 14, and an operation panel 15 is mounted on the surface thereof as shown in FIGS.

In FIG. 2, an inflow port 11a of a water purifier 11 having an activated carbon part and a hollow fiber part therein is provided with a tap water supply part 17 such as a faucet to which a hot and cold water mixing tap is attached by a raw water pipe 16a. In the middle of the raw water pipe 16a, as shown in FIGS. 2 and 3 to 5, in order from the upstream side to the downstream side, a flow path switching valve 50, a check valve 51, Constant flow valve 52
, A safety valve 53 and a hot water inflow prevention mechanism 54 are interposed. As will be described later with reference to FIGS. 3 to 6, the safety valve 53 and the hot water inflow prevention mechanism 54 are integrally formed in the present embodiment.

On the other hand, an outlet 11b of the water purifier 11 is connected to an inflow side 12a of the calcium tank 12 through a first purified water supply pipe 16b.
And the outlet side of the calcium tank 12
12b is connected to the inflow port 13a of the electrolytic cell 13 via the second purified water supply pipe 16c after the calcium component is applied.

In the electrolytic cell 13, an alkaline water generating space 19 and an acidic water generating space 20 are defined by a diaphragm 18, and electrodes 21 and 22 are disposed in the spaces 19 and 20, respectively. ing. Then, by applying positive and negative voltages to the electrodes 21 and 22 via the control unit 14, electrolysis is performed in the electrolytic cell 13 to generate alkaline water and acidic water in the respective spaces 19 and 20. be able to.

The electrolytic cell 13 has two outlets 13b, 13b, which communicate with an alkaline water generating space 19 and an acidic water generating space 20, respectively.
13c, one outlet 13b is connected to the upstream end of the first alkaline water outlet pipe 16d, and a discharge port 23 is formed at the other end of the alkaline water outlet pipe 16d.
The other outlet 13c is connected to the upstream end of the acidic water outlet pipe 16e, and a water outlet 23a is formed at the other end of the acidic water outlet pipe 16e.

As shown in FIG. 2, an operation panel 15 connected to the control unit 14 is provided with a power switch PS and a water purification / water conditioning switch 24, and the switch 24 is a first water purification pipe. It is turned on by an ON input to the control unit 14 from a pressure switch 28 provided in the middle of 16a, and a voltage is applied to the electrodes 21 and 22 in the electrolytic cell 13 to generate ionic water.

Further, as shown in FIG. 2, in this embodiment,
A base end of a pipe connection portion J is connected to an outlet 13c of the alkaline water generation space 13 of the electrolytic cell 13, and a first alkaline water lead indicated by a solid line is selectively connected to a front end of the pipe connection portion J. In addition to the pipe 16d, a second alkaline water outlet pipe indicated by a two-dot chain line
16f can be connected.

In FIG. 2, when the first alkaline water outlet pipe 16d is connected to the pipe connection portion J, as shown in FIG. 1, the first alkaline water outlet pipe 16d made of a flexible pipe is Since it is arranged near the vessel A,
The discharge port 23 is located on the corner of the sink S of the sink B.

On the other hand, in FIG. 2, when a second alkaline water outlet pipe 16f is connected to the pipe connecting portion J instead of the first alkaline water outlet pipe 16d, as shown in FIG. The water outlet pipe 16f is connected to the inflow port of the fourth communication flow path 50n provided in the flow path switching valve 50 integrally connected to the tap water supply unit 17 forming the faucet.
The alkaline water outlet 50e, which is the outlet of the sink B, faces the center of the sink C of the sink B below the faucet.

The present invention is characterized in that the hot water inflow prevention mechanism 54 has the following configuration in the configuration of the water conditioner A described above.

That is, as shown in FIGS. 5 and 6, the hot water inflow prevention mechanism 54 is provided with a cylindrical casing in the middle of the raw water pipe 16a.
54a is vertically interposed, and the same cylindrical casing 54a
On the side wall, there are provided an inflow side communication hole 54b communicating with the upstream side of the raw water pipe 16a, an outflow side communication hole 54c communicating with the downstream side of the raw water pipe 16a, and a hot water outflow hole 54d.

The outflow side communication hole 54c and the hot water outflow hole 54
“d” is provided at a portion having substantially the same vertical height of the cylindrical casing 54a. Further, the valve elements 54e and 54f are moved by a hot water operated type valve element moving means M which will be described later, and the outflow side communication holes 54c
And the hot water outlet 54d can be selectively closed.

In the present invention, in the above-described hot water inflow prevention mechanism 54, the hot-water-operated valve body moving means M can substantially instantaneously close the outflow side communication hole 54c by the valve body 54e when the hot water flows. It is characterized by having.

FIG. 5 shows an embodiment of the hot water operated valve body moving means M according to the present invention.

As shown in the figure, a long, plate-shaped click-type lever 54h is disposed vertically inside the cylindrical casing 54a, and the lever 54h has a base end connected to the cylindrical casing 54a. It is fixedly connected to the inner wall of one side via a fixing block 54p, and its tip extends to the upper space of the cylindrical casing 54a, and has a pair of hemispherical valve bodies at the extending end.
A spherical valve body composed of 54e and 54f is mounted. In addition,
The lever 54h may be a rod as long as it has elasticity or flexibility.

The two valve bodies 54e and 54f are moved by the left and right movement or swinging of the lever 54h, so that the outflow side communication hole 54 is formed.
c and the hot water outlet 54d can be selectively closed.

As shown in FIG. 6, a pair of bias springs 54j are provided on both sides of the lever 54h. The bias spring 54j is elastically curved, and its tip is connected to the lever 54h. And a base end thereof abuts against a fixed block 54p provided at the center of the tubular casing 54a.

With this configuration, during normal water flow, the lever 54h is urged toward the hot water outlet hole closing side by the spring force of the bias spring 54j, and the valve element 54f closes the hot water outlet hole 54d and the outlet side. The communication hole 54c is opened.

A heat deformation spring 54m made of a shape memory alloy, a shape memory resin, or the like is provided in the inflow side communication hole 54b. The heat deformation spring 54m has a distal end connected to the base end of the lever 54h. The base is in contact with the vicinity through a contact piece 54r, and its base end is in contact with an annular step 54n provided on the upstream side of the inflow communication hole 54b.

Then, the thermal deformation spring 54m is
When hot water flows into the cylindrical casing 54a, it deforms and expands, presses the lever 54h, and moves the valve bodies 54e, 54f to close the outflow side communication hole 54c and to close the hot water outflow hole 54d. Can be opened.

At this time, since the lever 54h has a cantilever shape, the valve bodies 54e and 54f attached to the distal end can be moved only by slightly moving the vicinity of the base end of the lever 54h by the principle of leverage. As a result, the outflow side communication holes 54b and the hot water outflow holes 54d can be selectively closed instantaneously.

In this embodiment, when the lever 54h exceeds the neutral point as the bias spring 54j, the valve body
Momentarily move 54e, 54f in either direction,
If the outflow side communicating hole 54 C and to use a closable spring further in a short time, the outflow-side passage 54
c can be closed, and the inflow of hot water into the water purifier 11 can be more reliably prevented. Of course, the coil spring may be used as the bias spring 54j only for the purpose of restoring the original shape.

With this configuration, the raw water normally flows through the raw water pipe 16a through the communication holes 54b and 54c and is supplied to the water purifier 11.

However, when hot water flows in, the hot deformation spring 54j is deformed to move the lever 54h rightward, and
The outflow side communication hole 54c is closed by the 54f, the hot water outflow hole 54d is opened, and the hot water outflow hole 54d can be discharged to the outside through the hot water outflow hole 54d. Therefore, hot water is supplied to the water purifier 11
It can be prevented as much as possible from flowing into.

In this embodiment, the cylindrical casing 54a
Inside, a safety valve 53 is integrated with the hot water inflow prevention mechanism M described above.

That is, the safety valve 53 is substantially formed by the urging force of the spring 53c between the cylindrical casing 53a connected to the lower part of the cylindrical casing 54a and the outflow hole 53b provided at the base end of the cylindrical casing 53a. And a spherical valve body 53d that is normally closed.

With such a configuration, the abnormal pressure is changed to the raw water piping 16.
a, the spherical valve element 53d is separated from the outflow hole 53b, and the raw water pipe 16a → the cylindrical casing 54a → the outflow hole.
53b → It can flow out through the cylindrical casing 53a.

In this embodiment, the spherical valve element 53d is
It is urged to the outflow hole 53b by a spring 53c via a cylindrical valve body receiving member 53e. And the valve body receiving member 53e
Is a cylindrical fitting portion which is detachably fitted into the spring 53c.
53f, and a flange portion 53g continuously provided through a rounded peripheral portion at the upper end opening of the cylindrical fitting portion 53e.

Accordingly, the spherical valve element 53d is connected to the spring 53c.
The end portion of the seal prevents damage to a true circle, thereby reliably preventing a leakage accident.

The other components in the embodiment shown in FIG. 5 will be described. A constant flow valve 52 provided to secure a steady flow is provided to prevent bacteria and the like from flowing into the tap water supply unit 17. The cylindrical casing 52 together with the check valve 51
It is arranged integrally in a. Specifically, a constant flow valve
52 is disposed downstream of the cylindrical casing 52a,
The check valve 51 is disposed on the upstream side of the cylindrical casing 52a, and a valve biasing spring 52b is interposed between the constant flow valve 52 and the check valve 51.

The structure of the constant flow valve 52 will now be described. As shown in FIG. 5, an annular water outlet 52c is provided at the center on the downstream inner surface of the raw water pipe 16a extending inside the cylindrical casing 52a. A valve body support 52d is formed. The valve body support portion 52d forms a concave valve seat 52e on the upstream side.

On the upstream side of the concave valve seat 52e, there is provided a valve body 52f made of an annular flat plate whose peripheral edge is in contact with the peripheral edge of the concave valve seat 52e. A 52g water inlet is provided in the center. The valve body 52f is formed of an elastically deformable elastic material such as rubber so that the diameter of the water passage 52g can be changed by water pressure.

On the other hand, the structure of the check valve 51 will be described. As shown in FIG. 5, the raw water pipe 16a extends on the upstream side of the raw water pipe 16a extending into the cylindrical casing 52a.
When raw water is not flowing in the flow path, a closing valve element 51a that closes the flow path is provided, and the one-side spring receiver 51b that holds the valve element supporting section 51a and the constant flow valve 52 are provided. Valve 52
f and the other side spring 51c provided in contact with
A valve biasing spring 52b is provided.

With this configuration, the pressure of the raw water flowing in the raw water pipe 16a rises, and the flow rate increases proportionally with the water pressure until the water pressure reaches a constant water pressure. Is deformed, and the deformation gradually reduces the diameter of the water inlet 52g, so that the flow rate is kept constant irrespective of the fluctuation of the water pressure.

(Operation of Water Regulator A) Next, a method of using the water regulator A having the above configuration will be described.

[0048] When turning on the power switch PS, lit alkaline water discharge lamp L ₁ or purified water discharge lamp L _2, of the concentration indicator lamp L ₃ ~L _7, the concentration indicator lamp final concentration state of the previous use lights I do.

[0049] If the water purifier discharge lamp L ₂ is lit,
Press water purification, purifier selector switch 24, to light the alkaline water lamp L _1. It should be noted that already alkaline water discharge lamp
If L ₁ is lit, there is no need to press the clean water-purifier change-over switch 24.

The concentration setting switch 70 is pressed to set the concentration of the alkaline water. In this case, either the concentration indicator lamp L ₃ ~L ₇ is turned on.

When the faucet forming the tap water supply unit 17 is opened,
The pressure switch 28 disposed on the first purified water supply pipe 16b is operated, and the electrolytic cell 13 is energized to start the electrolytic action. At this time, together with the display alkaline water while generating lamp L ₈ is lighted, even turned electrolyzer state display unit D.

Therefore, the tap water is supplied from the raw water pipe 16a to the water purifier.
11 → Calcium tank 12 → Electrolysis tank 13 → Piping connection J → First alkaline water outlet pipe 16d, and alkaline water of a desired concentration can be injected into cup E.

In the use of the water purifier A, when hot water is fed to the purifier 11 through the raw water pipe 16a, the water purifier 11
Or the electrolytic cell 13 may be damaged.

However, in this embodiment, as described above,
The hot water inflow prevention mechanism 54 is provided in the middle of the raw water pipe 16a, and when the hot water flows into the cylindrical casing 54a, the hot water inflow prevention mechanism 54 instantaneously opens the outflow side communication hole 54c communicating with the water purifier 11. The hot water can be closed by the body 54e and the hot water outflow hole 54d can be instantaneously opened to allow the hot water to flow to the outside, so that the hot water can be prevented from flowing into the water purifier 11 and the electrolytic tank 13 without fail. Damage to the vessel 11 and the electrolytic cell 13 can be reliably prevented.

FIG. 7 shows another embodiment of the hot water inflow prevention mechanism 54 according to the present invention.
Is configured separately from the hot water inflow prevention mechanism 54.

That is, also in this embodiment, the hot water inflow prevention mechanism 44 has substantially the same configuration as the above-described hot water inflow prevention mechanism 54, except that the safety valve 53 is replaced by the constant flow rate valve 52 and the hot water inflow prevention mechanism 54. It is characterized by being arranged between the.

As described above, the safety valve shown in FIG. 7 (including FIG. 5)
Since 53 is disposed on the downstream side of the constant flow valve 52 and near the heat inflow prevention mechanism 54, the outflow points can be substantially gathered at one place, so that the safety can be improved. That is, it is possible to eliminate the disadvantage that the safety valve 53 and the hot water inflow prevention mechanism 54 are arranged at a distance from each other as in the prior art, that is, the disadvantage that the number of caution points is two.

Even if the water purifier 11 is clogged and the pressure in the raw water pipe 16a increases, water is discharged by the safety valve 53, and the constant flow valve 52 is operated by the flow of water accompanying the discharge. Therefore, the internal pressure of the raw water pipe 16a is reduced, and the load on the connecting portion can be reduced. In particular, in the case of a water conditioner A in which electric components can be accommodated, water leakage due to damage to the raw water pipe 16a of the water conditioner A is very inconvenient, but this is prevented as much as possible. be able to.

In the above-described embodiment, the hot water inflow prevention mechanism 54 operates when the hot water flows into the cylindrical casing 54a.
The outflow side communication hole 54c communicating with the water purifier 11 is closed by a valve body 54e, and the hot water outflow hole 54d is opened so that the hot water flows out.

However, the hot water inflow prevention mechanism 54 is provided with the water purifier 11.
It is sufficient to close the outflow-side communication hole 54c communicating with the water by the valve element 54e. Even if the hot water outflow hole 54d is opened and the hot water does not flow out, the flow of the hot water into the water purifier 11 and the electrolytic tank 13 can be achieved. Can be reliably prevented, and damage to the water purifier 11 and the electrolytic cell 13 can be reliably prevented.

Therefore, the embodiment shown in FIGS. 8 and 9 does not require the hot water outlet 54d.

That is, the hot water inflow prevention mechanism 54 shown in FIG.
As the thermal deformation spring 54m, a spring that performs reversible shape memory type deformation according to temperature change is used,
Even if the bias spring 54j is not used, self-recovery is possible if the temperature drops.

The hot water inflow prevention mechanism 54 shown in FIG.
It is characterized in that a thermally deforming spring 54m and a bias spring 54j are provided in an L-shaped tubular casing 54a.

[0064]

According to the present invention, an inflow-side communication hole communicating with the upstream side of the flow path and an outflow-side communication hole communicating with the downstream side of the flow path are formed. A long lever with the base end fixedly connected to the inner wall of the flow path is attached and deformed when hot water flows in from the inflow side communication hole, and presses near the base end side of the lever to open the outflow side communication hole. It is characterized in that a heat deformation spring closed by a valve body is provided in the inflow side communication hole.

With this configuration, the raw water always flows through the raw water pipe through the communication hole and is supplied to the water purifier. On the other hand, when hot water flows, the heat-deformable spring is deformed to move the lever, so that the outflow-side communication hole can be closed by the valve element. Therefore, it is possible to prevent the hot water from flowing into the water purifier as much as possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a water conditioner provided with a hot water inflow prevention mechanism according to the present invention.

FIG. 2 is a configuration explanatory view showing a conceptual configuration of the water conditioner.

FIG. 3 is a side view of a raw water pipe provided with a hot water inflow prevention mechanism.

FIG. 4 is a bottom view taken along line II of FIG. 3;

FIG. 5 is a sectional side view of a raw water pipe provided with a hot water inflow prevention mechanism.

6 is a sectional view taken along the line II-II in FIG.

FIG. 7 is a sectional side view of a raw water pipe provided with a hot water inflow prevention mechanism according to another embodiment.

FIG. 8 is a sectional side view of a raw water pipe provided with a hot water inflow prevention mechanism according to another embodiment.

FIG. 9 is a cross-sectional side view of a raw water pipe provided with a hot water inflow prevention mechanism according to another embodiment.

FIG. 10 is a sectional side view of a raw water pipe provided with a conventional hot water inflow prevention mechanism.

FIG. 11 is a cutaway plan view of the same part.

[Explanation of symbols]

 A water regulator M hot water operated valve body moving means 54 hot water inflow prevention mechanism 54a cylindrical casing 54b inflow side communication hole 54c outflow side communication hole 54d hot water outflow hole 54e valve 54f valve 54h lever 54j bias spring 54m heat deformation spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 31/70 C02F 1/46 C02F 1/28

Claims (3)

(57) [Scope of request for utility model registration] An inflow side communication hole (5) communicating with an upstream side of a flow path.
4b) and an outflow-side communication hole (54c) communicating with the downstream side of the flow path, respectively, and in the middle thereof, the valve body (54e) (54f) is attached to the distal end and the base end is fixed to the inner wall of the flow path A long, connected lever (54h) is provided, and the hot water flows from the inflow side communication hole (54b).
Deforms when entering, and presses near the base end of the lever (54h).
The thermal deformation spout closes the outflow side communication hole (54c) with the valve body (54e).
A hot water inflow prevention mechanism comprising a ring (54m) in an inflow side communication hole (54b) . 2. A hot water inflow prevention mechanism according to claim 1, further comprising a bias spring (54j) for constantly biasing the lever (54h) in a direction in which the outflow side communication hole (54c) is opened. 3. The bias spring (54j) includes a lever (54).
3. A spring capable of closing a flow path by a valve element (54e) (54f) when h) exceeds a neutral point.
The described hot water inflow prevention mechanism.