JP2579982Y2 - Push-up type water heater - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention is a comparatively small device which is installed in a cabinet for small articles provided below a wash basin and efficiently discharges hot water mixed at an appropriate temperature when washing hands. The present invention relates to the improvement of a push-up type water heater having a large capacity.

[0002]

2. Description of the Related Art Water heaters using electricity or gas as a heat source are indispensable for daily kitchen work and body care in general households, and their spread is remarkable. There is. The water heaters are generally classified into a centralized type and a decentralized type, and the centralized type is mainly of a type that stores several 1001 hot water at about 85 ° C.
Bathroom) is connected so that high-temperature water can be supplied by piping. In using the high-temperature water, the high-temperature water and the cold water are mixed and used until the temperature becomes suitable. I was

When the centralized water heater uses a certain amount of the appropriate temperature water, for example, it is convenient to use the appropriate temperature hot water at all times by mixing with water at the time of cooking in a kitchen or taking a bath. When the amount of hot water used is relatively small, such as face washing and hair washing at the wash basin, a considerable amount of hot water at an unusable temperature must be released from when the faucet is opened until hot water at a usable temperature is obtained. Therefore, there was a problem that water and energy were wasted considerably. In addition, the centralized water heater is destined to always obtain high-temperature hot water, and furthermore, there is a problem that much energy is required to maintain the temperature of the high-temperature water.

[0004] On the other hand, when a centralized water heater is installed in an existing house, hot water is used when labor and cost for construction work for connecting the water heater to the place of use are increased. Required), for example, in a sink cabinet or under a wash basin, water heaters having internal volumes corresponding to the amount of hot water used are installed so as to be able to supply hot water individually, that is, distributed hot water. The vessel was attached to use hot water. In such a dispersion type water heater, since the conduit through which high-temperature water flows is shortened, it is possible to obtain hot water of an appropriate temperature mixed with water without opening a faucet and waiting for a long time, so that valuable drinking water and energy can be obtained. Can be saved considerably, which is convenient.

[0005]

However, in the above-mentioned decentralized water heater, if the amount of water used is not limited to a certain extent according to the purpose of use, the one having a large amount of hot water storage is installed due to the installation location. It was difficult. For this reason, instead of sacrificing the amount of hot water stored, it is conceivable to store a small amount of high-temperature water and use it. However, in this method, when hot water is discharged as needed, it is only appropriate to match it. Water is supplied from the water supply pipe into the hot water tank of the water heater. However, most of the supplied water diffuses in the hot water tank and rapidly disperses the high-temperature water, thereby increasing the mixing ratio with the high-temperature water and discharging the high-temperature water from the hot-water tank outlet. There was a problem that the temperature was necessarily lowered. That is, due to the inflow of water, this mixes well with the high-temperature water in the tank, causing the temperature of the hot water in the tank to drop rapidly,
There is a problem that the use efficiency of the high-temperature water is reduced at an early stage.

In view of the above problems, the present invention makes it possible to efficiently use most of the stored high-temperature water even in a small-capacity water heater. It is an object of the present invention to provide a push-up type water heater.

[0007]

According to the present invention, a water supply opening is formed at a periphery of a push-up type water heater, which is adjacent to a bottom surface of a hot water tank,
A protective frame formed into a housing with its upper surface closed at the inside of the hot water tank of the water supply port and opening the portion facing the water supply port and the bottom surface of the hot water tank, and housed in the protective frame to flow in from the water supply port A baffle frame configured by a baffle plate that allows water to flow from above to below in the protection frame. In addition, the baffle plate has an inclined wall surface at a position corresponding to the water supply port, and a flow hole through which water flows below the protection frame is integrally provided on an upper surface corresponding to an upper portion of the protection frame, and is substantially integrally provided. It is characterized in that it is formed in the shape of a letter.

[0008]

In the present invention, when the hot / water mixer tap is operated when tapping the appropriate temperature water, the water passed through the water supply pipe to the water supply port of the hot water tank flows through the baffle frame and flows down to the vicinity of the bottom of the hot water tank.・ The amount of hot water (high-temperature water) that is diffused and matches the amount of this flow is extruded from the outlet of the hot water tank into the tapping pipe, and the hot water is mixed with the tap water tap at a suitable temperature and discharged. At the time of tapping of the hot water, the water flowing into the hot water tank from the water supply pipe through the water supply port flows down to the bottom surface of the hot water tank through the baffle frame disposed inside the water supply port. The flow velocity of the baffle plate is remarkably reduced by colliding with the inclined wall surface of the baffle plate, and the water whose flow velocity has decreased temporarily rises along the inclined wall surface as it is, and then flows from the top of the baffle frame into the flow hole of the baffle plate. Through, while flowing down the diverging been skirt portion of the lower baffle frame, forms a gentle laminar flow near the bottom of the hot water tank, it is possible to gradually diffuse-flow into the hot water tank.

That is, according to the present invention, a baffle frame formed in a housing shape with a baffle plate inside is formed to communicate with the water supply pipe on the inside of the lower side surface of the hot water tank.
The water that has flowed into the hot water tank flows through the baffle frame to be in a laminar flow state with almost no turbulence, and can flow down and diffuse along the bottom surface of the hot water tank. Therefore, the high-temperature water stored in the hot water tank is prevented from mixing with the water, and the high-temperature water is extruded into the tapping pipe by an amount corresponding to the flow of the water, and the hot water is adjusted to the appropriate temperature with the water by the hot-water mixing tap. The hot water in the hot water tank can be used efficiently. In addition, the amount of hot water used per time can be reduced, thereby preventing the hot water stored in the hot water tank from being mixed with water even in a water heater having a small hot water storage capacity. Since the hot water tank itself can be downsized, the water flowing into the hot water tank can be heated with energy saving.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a bowl attached to a washstand (not shown), and reference numeral 2 denotes a push-up type water heater (hereinafter, referred to as a water heater) installed on a floor 3a of a cabinet for small articles (not shown) below the washstand. . Next, the structure of the water heater 2 will be described with reference to FIGS. In FIG. 2, reference numeral 3 denotes a housing of the water heater 2, in which a hot water tank 4 surrounded by a heat insulating material (not shown) is installed, and the hot water tank 4 is divided into two in the vertical direction. The hot water cans 5 and 5a are formed by being joined and fixed to each other at the opening edges in a water-tight manner via sealing members such as packing. 6
Is a mounting leg provided at the lower part of the hot water tank 4. Reference numeral 7 denotes a piping system of the water heater 2 of the present invention. The piping system 7 includes a water supply pipe 8 for supplying water to the hot water tank 4, a tapping pipe 9 connected to the top of the hot water tank 4, and a hot water tank 4. And a water supply connection pipe 11 branched and connected to the water supply pipe 8.

Next, the detailed structure of the piping system 7 will be described with reference to FIGS. First, one of the water supply pipes 8 is connected to a water supply source (not shown) via a water stopcock 12, and the other is provided in the housing 3 with a pressure reducing valve 12 a and a branch pipe 13.
Is connected to a water supply port 14 which opens on one side near the bottom surface of the lower hot water can 5a of the hot water tank 4 through the hot water tank 4. As shown in FIGS. 1 and 2, a water supply connection pipe 11 is connected to the water supply pipe 8 via a branch pipe 13 with a water-side cock a side of a hot-water mixer tap 15 mounted on the bowl 1. ing. The hot water pipe 9 has one end connected to a hot water outlet 9a opened at the top of the upper hot water can 5 of the hot water tank 4, the other end connected to the hot water cock b of the hot water mixing tap 15, The pipe 10 has a drain cock 10b at its tip and is connected to a drain port 10a opened on the bottom surface of the lower hot water can 5a. 1 is a pressure relief valve provided in the hot water tank 4 through a pipe (not shown), and 17 is a hopper attached to the housing 3 and is a hopper provided with the expansion water discharged from the hot water tank 4 through the pressure relief valve 16. And the hose 18
Through the drainage pipe 19 attached to the bowl 1.

Next, a baffle frame 20 shown in FIG. 3 is attached to the inside of the hot water can 5a so as to correspond to a water supply port 14 opened on one side near the bottom surface of the lower hot water can 5a. As shown in FIGS. 4 and 5, the baffle frame 20 is a baffle plate 21 formed by molding a metal plate so that a vertical cross section is substantially in the shape of a letter. The protective frame 22 is formed in a housing shape by opening only the lower surface and the front surface so as to house the device 21. As shown in FIG. 5, the baffle plate 21 is provided with a horizontally long flow hole 23 in an upper surface portion c formed in a substantially rectangular shape. Position the inclined wall surface e of the baffle plate 21 at the front open portion d corresponding to the water supply port 14 of the protection frame 22 and insert the baffle plate 21 into the protection frame 22; And a locking projection 24 formed on each side end of the inclined wall surface e with a narrow portion formed in the middle thereof and projected therefrom,
As shown in FIG. 5, by projecting laterally from an engagement hole 25 formed in the side plate f of the protection frame 22, and twisting the locking projection 24 rightward or leftward by using the narrow width portion, The baffle plate 21 can be firmly attached to the protective frame 22 so as not to fall off. The front opening part d of the protection frame 22 and the flow hole 23 of the baffle plate 21 are each opened with an opening area approximately two to three times as large as the opening area of the water supply port 14.

The baffle frame 20 provided as described above
Is attached to the lower hot water can 5a, a locking plate 26 extending integrally with the side plate f is brought into contact with the inner surface of the lower hot water can 5a on the front opening portion d side of the protective frame 22. In this case, as shown in FIG. 4, the front opening portion d of the baffle frame 20 and the inclined wall surface e of the baffle plate 21 correspond to the water supply port 14, and the locking plate 26 is connected to the lower hot water can 5a. The baffle frame 20 is attached to the hot water tank 4 by spot welding or the like on the inner surface of the. Note that FIG.
Reference numeral 27 denotes an electric heater disposed in the hot water tank 4.

Next, the operation of the water heater 2 of the present invention will be described. When tapping high-temperature water in the hot water tank 4, first, the water-side cock a and the hot-water cock b of the hot-water mixer tap 15 are rotated in a direction in which each of them opens. Then, water is reduced from a water supply source (not shown) through the water supply pipe 8 and the water supply connection pipe 11 to a predetermined pressure by the pressure reducing valve 12 a and supplied to the water supply port 14 of the hot water tank 4 and the water discharge pipe g of the hot and cold water mixing tap 15. Is done. Then, as shown in FIG. 4, the water supplied to the water supply port 14 flows from the water supply port 14 having a small opening area into the front opening portion d of the baffle frame 20 which is wider than the water supply port 14, and the baffle plate as it is. 21 is guided upward in the baffle frame 20 along the inclined wall surface e. In this case, since the front opening d of the baffle frame 20 is formed to be considerably wider than the opening of the water supply port 14, the water flowing into the baffle frame 20 from the water supply port 14 has a rapid flow rate at the time of inflow. In the state of collision with the inclined wall surface e of the baffle plate 21, the water is further guided upward in the baffle frame 20, so that the flow velocity of the water is further reduced.

Then, the water guided above the baffle frame 20 passes through the flow holes 23 of the baffle plate 21 and the lower opening h which is expanded in a skirt shape below the baffle frame 20 shown in FIG. Flow down to Since the lower opening part h of the baffle frame 20 is formed so as to have a larger cross-sectional area than the upper side and the water supply port 14, the baffle plate 20 has a flow hole 23 through the baffle plate 21. Since the inflow velocity of the water flowing down through the lower part of the baffle frame 20 further decreases, the water flowing in the baffle frame 20 flows in a laminar state with almost no turbulence. As described above, the hot water tank 4 passes through the baffle frame 20 from the water supply port 14.
The water that has flowed into the inside is radially diffused from the lower peripheral edge of the lower hot water can 5a to the bottom surface of the hot water tank 4 with the flow velocity thereof extremely reduced, and flows in without generating turbulent flow. It becomes possible.

As described above, most of the water flowing down from the baffle frame 20 is in a laminar flow state and the hot water tank 4
The water flowing into the hot water tank 4 can be mixed with the high-temperature water stored in the tank 4 or disturbed by the hot water. Instead, the high-temperature water is sequentially extruded from the inside of the hot water tank 4 (water outlet 9a) by a flow rate commensurate with the inflow amount of water, and the hot water is supplied to the tapping pipe 9. The high-temperature water discharged from the tapping pipe 9 is supplied to a tap water mixing tap 15, mixed with water already supplied to the tap water mixing tap 15 via the water supply connection pipe 11 at an appropriate temperature, and is suitable for use from a spout pipe g. Hot water and hot water.

In order to stop the hot water after the tapping of the hot water, the cocks a and b on the water side and the hot water side of the hot / water mixer tap 15 are operated in the closing direction of the hot / water mixer tap, so that the water supply pipe 8 is closed.
Since the supply of water from the water is stopped, tapping of the appropriate temperature water can be stopped. When high-temperature water or only water is discharged from the water discharge pipe g, it can be easily obtained by operating one of the cocks a and b on the water side or the hot water side.
Further, the present invention has been described with reference to the embodiment in which hot water is supplied using the hot water mixing tap 15 provided with the two taps a and b on the water side and the hot water side. Of course, a mixing tap may be used.

Next, an experiment was conducted to determine how much high-temperature water generated by the hot water tank 4 having the baffle frame 20 of the present invention can withstand use by the inflow of water. In the experiment, the inner volume of the hot water tank was 121, the incoming water temperature was 20 ° C., the boiling temperature was 85 ° C., the amount of water discharged was 51 / min, and the outlet temperature of the hot water was set at about 80 ° C. Under these conditions, how much hot water of about 80 ° C. can be discharged using the hot water tank having the baffle frame 20 of the present invention and a normal hot water tank having no baffle frame 20 After confirming by experiment,
The hot water tank using the baffle frame 20 of the present invention had a tapping rate of about 80%, whereas the hot water tank without the baffle frame 20 had a tapping rate of about 55%. As can be seen from the above results, the water supply amount is maintained at an appropriate amount corresponding to the hot water supply amount, and the flow rate of the water flowing into the hot water tank 4 is reduced as much as possible before coming into contact with the high-temperature water. In addition, the phenomenon that water easily mixes with or disturbs high-temperature water can be reliably mitigated, and even if the internal volume of the hot water tank 4 is relatively small, By reducing the flow velocity of the water flowing into the inside as much as possible, it is possible to efficiently discharge hot water.

The above result shows that the baffle frame 20 provided in the hot water tank 4 can reduce the flow velocity of the water flowing from the water supply port and cause the water to flow down to the bottom of the hot water tank 4 in a gentle laminar flow state. Therefore, it is considered that there is nothing other than disturbing the high-temperature water and reducing the proportion of the water mixed with the high-temperature water.

Although the present invention has been described with reference to the embodiment using the hot water tank 4 having a split structure composed of a pair of hot water cans 5 and 5a, the present invention is not limited to this. It is a matter of course that the hot water tank may be configured by using a head cylinder body.

[0021]

The present invention is configured as described above, and has the following effects. (1) The present invention relates to a baffle frame formed by combining a housing-shaped protection frame and an inverted-baffle-shaped baffle plate mounted in the protection frame with a water supply opening opened on a peripheral edge near a bottom surface of the hot water tank. The water flowing from the water supply port is caused to flow down along the bottom surface of the hot water tank from the lower opening portion of the baffle frame body having an opening area larger than the water supply port while meandering in the baffle frame body. Therefore, the water that has flowed in from the water supply port can flow into the hot water tank at an extremely low flow rate by flowing through the baffle frame, so that turbulence and turbulence are hardly generated. Since the hot water tank can be smoothly supplied with water, the contact with the high-temperature water in the hot water tank can be minimized, thereby enabling the high-temperature water to be efficiently discharged. Also effective use of high temperature water in a small water heater the product is Hakare is convenient as pushing water heater distributed.

(2) The baffle frame attached to the water supply port of the hot water tank has a housing-shaped protection frame having an open front and a lower side, and a substantially elliptical shape built in the protection frame. it is only combining a baffle plate which forms the song, moreover, bar
The locking projection formed on the side end of the raffle plate is
Protrude from the engagement hole provided in the side plate and twist the protruding end
By doing so, it can be easily attached to the protective frame
The baffle frame can be manufactured easily and economically.
It becomes possible. In addition, since the baffle frame is configured so that the inflowing water is once pushed up above the protection frame, the baffle frame can be made to flow down to the bottom side of the hot water tank at a reduced flow rate, so that the baffle frame is simple. There is also an advantage that the flow rate of the inflowing water can be effectively reduced by the structure.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a use state of a push-up type water heater of the present invention.

FIG. 2 is a front view showing the push-up type water heater of the present invention.

FIG. 3 is a cross-sectional view of a main part of the water heater according to the present invention, which is longitudinally sectioned.

FIG. 4 is a vertical sectional view of the baffle frame attached to the water heater of the present invention.

FIG. 5 is a perspective view of a baffle frame.

[Explanation of symbols]

 2 Push-up type water heater 4 Hot water tank 8 Water supply pipe 14 Water supply port 20 Baffle frame 21 Baffle plate 22 Protective frame 23 Flow hole d Front opening e Slope wall h Lower opening

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaki Hayakawa 1st Aichi-cho, Kasugai-shi, Aichi Pref. Aichi Electric Co., Ltd. Examiner Tetsuo Sekiguchi (56) References JP-A-4-20744 (JP, A) JP-A Sho 59-86847 (JP, A) JP-A-60-101434 (JP, A) JP-A-58-51141 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24H 1/18

Claims (2)

(57) [Scope of request for utility model registration] 1. A water supply opening is formed in a peripheral edge close to a bottom surface of a hot water tank, and a portion of the water supply opening whose upper surface is closed and which faces the water supply opening and the bottom surface of the hot water tank is opened to form a casing. A protective frame and an inclined wall surface at a position corresponding to the water supply port, and water is provided under the protective frame on an upper surface corresponding to an upper part of the protective frame.
With the flow holes for the circulation
Formed in the shape of a letter, and the water flowing from the water supply port in the protection frame
Baffle plates that flow from above to below
A push-up type water heater characterized in that the constructed baffle frame is mounted. 2. The baffle plate has an upper surface and an inclined wall.
Locking projections are provided at the side ends of the surface,
From the engaging hole drilled in the side plate of the protective frame to the side.
By twisting the locking projections protruding from the engagement holes.
To be attached to the protective frame so as not to fall off.
The push-up type water heater according to claim 1, wherein: