JPH0420745A - Hot water storing type hot water feeder - Google Patents

Abstract

PURPOSE:To perform an efficient discharging of hot water in a tank by a method wherein a flow regulating plate is disposed in a substantial horizontal orientation in respect to a bottom surface of a tank, a dispersion chamber is formed between the flow regulating plate and the bottom surface of the tank, an opening for flowing out water from the dispersion chamber into the tank is provided and a buffle plate for guiding water in a lateral direction is disposed above the opening. CONSTITUTION:A flow regulating plate 3 is disposed at a bottom surface in a tank 1 substantially in parallel with the bottom surface of the tank 1 so as to be positioned below a heat source 2. A dispersion chamber 4 is formed between the flow regulating plate 3 and the bottom surface of the tank 1. Within the dispersion chamber 4 is disposed a water supplying port 5 for flowing water into the tank 1 and an upper part of the dispersion chamber 4 is provided with an opening 6 for use in flowing out water from the dispersion chamber 4 into the tank 1. The upper part of the opening 6 is provided with a buffle plate 7 for use in guiding water from the dispersion chamber 4 flowed out of the opening 6 in a lateral direction. The water flowed out laterally by the buffle plate 7 is flowed near a heater 2a. The flowed-in water from the water supplying port 5 is at first flowed into the dispersion chamber 4, resulting in that the flowing water of high flow speed from the water supplying port 5 having a less cross sectional area of the flowing water widely agitates in the dispersion chamber 4 and then a flow speed of the water is reduced through the dispersion of the water in the dispersion chamber 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hot water storage type water heater, and more specifically, a hot water storage system used in a hot water washing toilet seat that sprays warm water onto the private parts of the human body to clean filth. This concerns eight formula-fed aircraft.

[Prior Art 1] Conventionally available hot water storage type water heaters used in hot water bidet toilet seats are generally capable of storing a certain amount of hot water in a tank. However, since the above-mentioned type of hot water dispenses only the amount of water that is in the tank, there is a problem in that if the water is left out continuously for a long time, the hot water will run out. For this reason, there is a need for something that can drain the limited amount of hot water in the tank as efficiently as possible, prolonging the time until water runs out, and enabling long-term cleaning. For example, the one shown in Japanese Patent Application Laid-open No. 184626/1983 is available. As shown in Fig. 9, the water supply port 5 for supplying water into the tank 1 is formed in a diagonal shape (spreading end); As a result, the flow rate of the inflow water flowing into the tank 1 from the water supply port 5 is reduced, the agitation of the hot water stored in the tank 1 by the inflow water is reduced, and the flow rate of the hot water stored in the tank 1 is reduced by the inflow water from the water supply port 5. The hot water is prevented from being stirred and the temperature becomes low overall, and the hot water can be discharged in layers from the discharge port 15, so that even when hot water is continuously discharged for a long time, low-temperature hot water is discharged. This is to prevent the hot water from running out or running out.

[Problems to be Solved by the Invention] However, in the conventional example as described above, the water supply pipe 5a forming the water supply port 5 has an inner diameter of about 4 to 6 mm on the base side to the diameter of the water supply port 5 headlight. The inner diameter can only be expanded to about 10 + + + w ~ 15 mm. In other words, if you widen it beyond the above range, the inflow water will be separated from the inner wall surface of the water supply port 5 and will flow into the tank 1. The deceleration effect of the water does not improve, and sufficient deceleration cannot be achieved.As a result, the hot water in the tank 1 is
As a result, the temperature becomes low and it is not possible to continuously supply high-temperature hot water when hot water is supplied, and the inflow water flows to the upper part of tank 1, so low-temperature hot water is supplied. There was a problem with being exposed.

As an example, the flow rate (■) of inflow water is as follows.

Here, the inner diameter of the water supply port 5 expands from the base side to the tip ** (from the end 51 by 12 mm1, and the flow rate is 0.81/++i
If n, then V = 800/ (0,8X O,6x lrX 6
0) = about 11.8 cm/see, which means that about 20% of the hot water in the tank 1 is stirred. Therefore, there is a problem that the hot water is maintained for only a short time, making it impossible to provide the user with a sufficient amount of washing water and opening time during washing.Also, since the hot water is stirred to a low temperature, it is difficult to use the stored hot water effectively. However, there was a problem in that the energy for energizing the heater 2a as the heat source section 2 was wasted.

The present invention aims to solve the above-mentioned problems, and its purpose is to greatly reduce the flow rate of water flowing into the tank so that the hot water in the tank is stirred by the water flowing into the tank. to prevent the temperature from becoming too low.
To provide a hot water storage type water heater capable of efficiently discharging hot water in a tank to increase the amount of hot water used for washing and the length of washing time.

[Means for solving the problem 1 In order to achieve the above object, the hot water storage type supply m in the present invention
1flA is a hot water storage type water heater that stores water from a water supply source in a tank 1 and heats the stored water with a heat source section 2 placed in the tank 1. A diffusion chamber 4 is formed between the current plate 3 and the bottom of the tank 1 by arranging the current plate 3, and a water supply port 5 through which water flows into the diffusion chamber 4 is provided above the diffusion chamber 4. 4, an opening 6 is provided in the tank 1 to allow water to flow out, and a baffle plate 7 is provided above the opening 6 to guide water laterally.

Also, in the diffusion chamber 4, the water remains on the downstream side of the water supply port 5@8
, and a diffusion outlet 9 having a slit-like opening may be provided between the retention plate 8 and the rectifying plate 3.

[Action 1 The inflow water flowing into the tank 1 from the water supply port 5 flows through the rectifier plate 3
The water flows into the diffusion chamber 4 formed by the flow, and then gradually flows out from the opening 6 to the inner bottom of the tank 1 above the rectifying plate 3 by the baffle plate 7. In this way, the flow rate of the inflow water is reduced in the diffusion chamber 4, and then the flow rate is reduced in the tank 1 by the opening 6 and the baffle plate 7! By flowing out to part E, water is supplied into the tank without stirring the hot water in tank 1, and the hot water stored in tank 1 is pushed up from below to provide an efficient flow. It ends with making a bath.

In addition, a retention plate 8 is provided on the downstream side of the water supply port 5 in the diffusion chamber 4.
If a diffusion outlet 9 having a slit-shaped opening is provided between the retention plate 8 and the rectifying plate 3, the inflow water flowing into the diffusion chamber 4 will be diffused within the diffusion chamber 4. is carried out even more effectively, and the flow velocity is reliably reduced.

[Example 1] Hereinafter, the present invention will be described in detail based on the illustrated embodiment.

FIG. 1 shows a piping system diagram in which the hot water storage type water heater A of the present invention is used for a hot water washing toilet seat, in which water stored in a low tank 10 is pumped through a water suction pipe 11 by a pressure pump 12. Suction and pressurization are applied. The pressurized cleaning water passes through the water supply pipe 13 to the tank 1 of the hot water storage type hot water supply +fiA.
The water is sent to and stored in the tank 1, heated by a heater 2a serving as a heat source 2, and controlled to an appropriate temperature, and then sprayed from a cleaning nozzle 14.

The hot water storage type water heater A is configured as shown in FIGS. 2 and 3, and the bottom of the tank 1 is located approximately parallel to the bottom of the tank 1 so as to be located below the heat source 2. Current plate 3
A diffusion chamber 4 is placed between the rectifying plate 3 and the bottom of the tank 1.
It is formed. A water supply port 5 for flowing water into the tank 1 is provided in the diffusion chamber 4, and an opening 6 for flowing water from the diffusion chamber 4 into the tank 1 is provided above the diffusion chamber 4.
This is provided. An opening WS6 is provided above the opening 6.
A baffle plate 7 is provided to guide water from the diffusion chamber 4 flowing out laterally, and the baffle plate 7 causes the water flowing out laterally to flow near the heater 2a. The inflow water from the water supply port 5 first flows into the diffusion chamber 4, and the inflow water flows at a high flow rate from the water supply port 5, which has a small inflow cross-sectional area, and greatly stirs the inside of the diffusion chamber 4. Therefore, it is diffused within the diffusion chamber 4 and the flow velocity is reduced. The decelerated inflow water passes through the opening 6 and flows from the diffusion chamber 4 to the upper side of the rectifying plate 3. At this time, the flow rate of the inflow water is equal to the flow rate between the rectifying plate 3 and the bottom of the tank 1 as described above. The gap, that is,
It is set by the flow water passage cross-sectional area of the diffusion chamber 4. Therefore, by arbitrarily setting the flow cross-sectional area of the flowing water, the inflow water can be decelerated freely.

As an example, the flow velocity V is expressed as follows.

V=Q/S Here, Q is the flow rate of inflow water, S is the cross-sectional area of the gap between the rectifier plate and the tank bottom, and if the flow rate Q is 0°81/win
If the cross-sectional area dimensions S are 711111 mm long and 70 mm wide, then V = 80010.7X7X60 2.7 cm/sec, which allows the flow rate to be reduced to 1/3 or less compared to the conventional case using a diffuser-shaped water inlet. become.

The decelerated inflow water flows from the diffusion chamber 4 through the opening 6 above the rectifying plate 3, but if it continues to flow upward, it will agitate the hot water in the tank 1, so a baffle plate is installed above the opening 6. 7 is provided, and the inflowing water is guided laterally by this baffle plate 7, flows into the tank 1 along the lower surface of the heater 2a, and is heated by the heater 2& to become hot water. With such a configuration, the decelerated inflow water is supplied to the vicinity of the heater 2a at the bottom of the tank 1 without stirring the hot water in the tank 1, and is heated by the heater 2a and becomes the hot water in the tank 1. The liquid is pushed up in a layered manner so as to be efficiently discharged from the discharge port 15. At this time, it is desirable that the cross-sectional area of the opening 6 and the water passage between the baffle plate 3 and the baffle plate 7 be larger than that of the diffusion chamber 4. This is to prevent an increase in the flow rate of water flowing out laterally from the opening 6 through the baffle plate 7 if the water flow passage cross-sectional area is smaller than the diffusion chamber 4. 16 in the figure is a float switch, which is activated when the tank 1 is filled with cleaning water, and the controller 1 is activated so that the heater 2a can be activated.
7 is l'j! function. This is to prevent dry firing.

Then, based on a signal from a temperature sensor 18 that detects the temperature of the cleaning water provided in the tank 1, the controller 17 performs feedback control on the heater 2a so that the temperature of the cleaning water in the tank 1 reaches the temperature set by the user. It is meant to hunt and troll.

Figure 4 shows a graph showing changes in the temperature of the cleaning water injected from the cleaning nozzle 14. A in Figure 4 shows the temperature of the cleaning water produced by a conventional water storage type water heater with a diffuser-like water supply port skewed. The state of change is shown, and the opening in the figure is the hot water storage type supply m! according to the present invention. C in Figure 6, which shows the temperature change state of the cleaning water due to A, shows the temperature change state when hot water in the tank 1 is discharged under an ideal state without stirring at all.

The temperature of the cleaning water gradually decreases with respect to the elapsed time on the horizontal axis (in line A of the conventional example). It can be seen that in the case shown by the line, a state close to the No. 1 line can be achieved, and a maintenance time of 90% or more can be obtained.

By installing simple parts such as the rectifying plate 3 and baffle plate 7, the cleaning water temperature can be easily maintained for 1 hour.
0% or more (and the cleaning time can be extended, and the stored hot water at an appropriate temperature can be used efficiently, resulting in an energy saving effect.
By using the internal capacity with high efficiency, it becomes possible to make the hot water storage type supply m1flA more compact and to increase the degree of freedom in its design.

5, 6, and 8 show other embodiments of the present invention, in which a retention plate 8 is arranged downstream of the water supply port 5 in the diffusion chamber 4. A diffusion outlet 9 having a slit-like opening is provided between the retention plate 8 and the rectifying plate 3. That is, a fan-shaped weir 8a is provided on the downstream side of the water supply port 5 to protrude from the bottom of the tank 1, and a slit-shaped diffusion outlet 9 is formed between the weir 8a and the lower surface of the current plate 3. . By slightly increasing the pressure on the upstream side of the diffusion outlet 9, the inflow water can be uniformly injected into the diffusion chamber 4 in a fan-like manner, and the This allows for more effective diffusion of inflow water. Additionally, as the flow rate of inflow water increases, the flow velocity distribution within the diffusion chamber 4 may become uneven, making it impossible to obtain a sufficient deceleration effect. (Vortexes may be generated.) According to this embodiment, due to the structure in which the spray is uniformly sprayed into the diffusion chamber 4, there is no deviation in the flow velocity distribution due to an increase in the flow rate, and therefore, the same advantages as the first embodiment are achieved. It is possible to obtain sufficient results even in the flow rate range. Furthermore, in the illustrated embodiment, the retention plate 8 is fan-shaped; however,
The shape is not limited to this, and other shapes may be used. In addition, in the illustrated embodiment, the water supply port 5 is shown opening laterally in the diffusion chamber 4, but as shown in FIG. It is also possible to open the opening at the same time.

[Effects of the Invention] As described above, the hot water storage type water heater of the present invention has a rectifying plate disposed at the bottom of the tank substantially parallel to the bottom of the tank to form a diffusion chamber between the rectifying plate and the bottom of the tank. , a water supply port is provided to allow water to flow into this diffusion chamber, and the diffusion is achieved! An opening is provided above to allow water to flow out from the diffusion chamber into the tank, and the water is guided horizontally above this opening (a baffle plate is provided, so the water flowing in from the water inlet has a flow rate within the diffusion chamber). After being decelerated, it flows out to the bottom of the tank through the opening and the baffle plate, which can prevent the hot water in the tank from being stirred by the inflow water and becoming cold, The supplied hot water does not become low in temperature midway through, and high temperature hot water can be supplied continuously and the supply time can be extended.

In the second aspect of the invention, a retention plate is disposed downstream of the water supply port in the diffusion chamber, and a diffusion outlet having a slit-like opening is provided between the retention plate and the rectifying plate. Therefore, the inflow water flowing from the water supply port is diffused in advance in the diffusion chamber by the diffusion outlet and the flow velocity is reduced, which further reduces the flow velocity of the inflow water flowing into the tank from the water supply port. It is possible to reduce the speed of the inflow water even in a high flow rate range, and prevent the hot water in the tank from being stirred up and becoming cold.

[Brief explanation of the drawing]

Fig. 1 is a piping system diagram of an embodiment using the present invention, Fig. 2 is a sectional view showing the same configuration, Fig. 3 is a partial plan sectional view showing the flow of inflow water in the above, and Fig. 4 is Graphs showing changes in hot water temperature over time; FIGS. 5 and 6 are partial sectional views and partial plan sectional views showing other embodiments of the present invention; FIG. 7 is a partial sectional view showing still another embodiment. , FIG. 8 is a partially cutaway perspective view of the same as above, and FIG. 9 is a cross-sectional view showing the configuration of a conventional example, in which A is a hot water storage type water heater, 1 is a tank, 21 is a heat source part, and 3 is a sectional view showing the configuration of a conventional example.
is a rectifying plate, 4 is a diffusion chamber, 5 is a water supply port, 61 is an opening, 7
8 is a baffle plate, 8 is a retention plate, and 9 is a diffusion flow port. Agent Patent Attorney Stone 1) Chief 7th 7t4 Figure 8 Kupe Sobun = 岨 1 Back ＼沁士GIku = v number → ψ () area − E sin

Claims (1)

[Scope of Claims] [1] In a hot water storage type water heater that stores water from the water supply in a tank and heats the stored water using a heat source disposed in the tank, there is provided at the bottom of the tank approximately parallel to the bottom surface of the tank. A diffusion chamber is formed between the rectifier plate and the bottom of the tank by placing a rectifying plate in the bottom of the tank, and a water supply port is provided for water to flow into the diffusion chamber, and water flows out from the diffusion chamber into the tank above the diffusion chamber. 1. A hot water storage type water heater, characterized in that a hot water storage type water heater is provided with an opening that allows water to flow horizontally, and a baffle plate that guides water laterally above the opening. [2] A retention plate is disposed downstream of the water supply port in the diffusion chamber, and a diffusion outlet having a slit-shaped opening is provided between the retention plate and the rectifying plate. Hot water storage type water heater.