JP3086913U - Hot water temperature maintenance device of hot water supply equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a hot water supply facility, even when hot water is intermittently used in a bathroom shower, kitchen tap water, and other hot water supply points, almost constant hot water temperature is used. Can be maintained and the equipment can be made extremely simple. SOLUTION: A casing 1, an inflow section 2 for injecting hot water passing through a heating section 5a into the casing 1, and an outflow having an outflow opening 3a located substantially above the center in the height direction inside the casing 1. Part 3. The casing 1 can store hot water up to the position of the outflow opening 3a.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is intended to maintain a substantially constant hot water temperature even when hot water is intermittently used at a bathroom shower, kitchen tap water and other hot water supply points in a hot water supply facility. The present invention relates to a hot water temperature maintenance device of a hot water supply system which can be manufactured and its facilities can be extremely simplified.

[0002]

[Prior art]

 In recent years, hot water supply equipment, mainly water heaters, has been widely used in detached houses, apartments, condominiums, commercial buildings, and the like. Such a hot water supply facility can use hot water while keeping a desired temperature from a water heater. As described above, the hot water supply system can enjoy a rich living environment because the hot water supply to the bathroom, shower, kitchen or laundry room can be used in a stable state throughout the year.

[0003]

[Problems to be solved by the invention]

 In the above hot water supply facility, when hot water is used continuously, it can be always used at a constant hot water temperature during use. However, in some cases, hot water is used intermittently. These are cases where the purpose is to eliminate water waste and conserve water. Such cases include, for example, when using a shower or when washing dishes in the kitchen.

[0004] In such a case, the hot water supply is often stopped during the use of the hot water supply. For example, when the hot water supply is temporarily stopped during the hair washing, or when the dishwashing operation is performed by wiping the washed dishes with a cloth. In this case, the hot water supply is temporarily stopped. In this way, the intermittent use of hot water is often performed on a daily basis. The most problematic problem with such intermittent use of hot water is when the interval between hot water stops is relatively long. In other words, even when hot water is used intermittently, if the hot water supply stop time is short and almost instantaneous, it can be used at a constant hot water temperature almost unchanged from continuous use. Wear.

However, in the intermittent use of the hot water supply, if the hot water supply stop time is relatively long, for example, about 2 to about 10 minutes, when the hot water supply is restarted, the hot water supply is initially started. Suddenly comes out, and then a phenomenon occurs in which cold water comes out for a certain period of time. This phenomenon of temperature change is usually called "cold water sandwich phenomenon". This depends on the length of the piping from the water heater to the shower, faucet, etc., but in intermittent use of hot water supply, immediately after the hot water supply is stopped, it is stopped by the time difference due to the stop command to the heating section such as gas burner. After a short delay, the hot water remaining in the water heater continues to be heated, so that the remaining hot water in the water heater becomes even hotter.

Next, in resuming hot water supply, first, the hot water described above is pushed out and sent out to a water supply device such as a shower or a faucet, and extremely hot water is temporarily discharged from these water supply devices. Will come. Next, even if the hot water supply is restarted, the heating section of the water heater will be ignited with a slight delay, and a time lag, or time lag, will occur until a stable heating operation is performed. Due to this time difference, unheated water flows in the water heater, and cold water is sent to the shower or faucet as it is. Therefore, as described above, when using the hot water supply intermittently at a shower or kitchen faucet, depending on the stop time, sometimes the hot water temperature is not constant and unpleasant when using the water supply equipment. May be felt.

[0007] Therefore, in order to make the temperature of the hot water constant by intermittent use of the hot water supply, there is a type in which a control mechanism is incorporated in a pipeline of the hot water supply equipment to make the temperature of the hot water constant by electronic control. These are equipped with a hot water temperature sensor, a solenoid valve, a thermostat, and a control unit for appropriately controlling these. However, such equipment is extremely expensive, and because of the large number of components, it has a complicated configuration, and maintenance must be performed with expertise, and maintenance costs are high. It also causes. An object of the present invention is, as described above, to maintain a constant hot water temperature even in intermittent use of hot water supply and to make the structure extremely simple.

[0008]

[Means for Solving the Problems]

 The inventor of the present invention has conducted intensive studies in order to solve the above-mentioned problems. As a result, the present inventors have found that the present invention relates to a casing, an inflow section for flowing hot water passing through the heating section into the casing, and a height inside the casing. The casing has a hot water temperature maintainer of a hot water supply facility which is capable of storing hot water up to the position of the outflow opening. Even when hot water is used intermittently in hot water heaters at bathroom showers, kitchen taps, and other hot water supply locations, a substantially constant hot water temperature can be maintained, and The equipment can also be extremely simplified, solving the above problems.

[0009]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The hot water temperature maintainer of the present invention constitutes a hot water supply facility. The structure of the present invention mainly includes a casing 1 and an inflow portion 2 which is connected to the water heater 5 to allow hot water to flow into the casing 1, and which is located above a substantially center in the height direction inside the casing 1. And an outflow portion 3 having an outflow opening 3a for sending hot water from the inside of the casing 1 to the outside of the casing 1. The inflow section 2 and the outflow section 3 are further composed of a plurality of members.

The present invention has various embodiments. First, the first embodiment will be described. The casing 1 is a tank having a hermetic property, and is capable of temporarily storing hot water from the water heater 5 therein. Such a casing 1 is made of metal and has a substantially rectangular parallelepiped shape as shown in FIGS. 1 and 2A. In addition, the casing 1 may be made of heat-resistant synthetic resin, pottery, or the like other than metal, but preferably has durability and impact resistance.

The casing 1 specifically includes a main body 1a and a cover 1b. The main body 1a and the cover 1b are formed in a watertight manner by a fixing tool 1c such as a bolt and a packing material 1d such as rubber. More specifically, the periphery of the opening side of the main body portion 1a, is formed with connecting flange 1a _4, the said connecting flange 1a _4, a plurality of connection holes 1a at predetermined intervals ₅ , 1a _5, ... are formed. The said connecting hole 1a ₅ sometimes has internal threads are formed. The packing material 1d between the connecting flange portion 1a ₄ and the cover portion 1b is sandwiched, a main body 1a and the cover 1b is fixed by fastener 1c.

As shown in FIGS. 1A and 1B, the casing 1 is provided with an inflow portion 2 and an outflow portion 3. The inflow portion 2 serves as an inlet for hot water from the water heater 5 to flow into the casing 1 as shown in FIG. The outflow portion 3 is a portion for sending out the hot water flowing into the casing 1 to the outside of the casing 1 and supplying the hot water to a water supply device 8 such as a shower device or a faucet. The structure of the inflow section 2 includes an inner inflow pipe 2b and an inflow joint 2c that fixes the inner inflow pipe 2b to the casing 1 and connects to a pipe from the water heater 5.

[0013] First, inlet 2, Figs. 1 (A), (B), the said is mounted on top 1a ₁ of the casing 1, an internal inlet tube 2b to the inside from said top 1a ₁ It is tightened and fixed via the inflow joint 2c. The internal inflow pipe 2b is mounted so that the axial direction is substantially vertical. The inflow opening 2a, that is, the lower end of the internal inflow pipe 2b is located below the substantially center of the casing 1 in the height direction. Specifically Furthermore, it is preferable that the lower end of the inner inlet pipe 2b is a inflow opening 2a portion is close to the bottom 1a ₂ of the casing 1.

[0014] Next, the outflow part 3, the being mounted on the bottom 1a ₂ of the casing 1, the upper surface of the bottom portion 1a _2, i.e. the internal outlet pipe from the bottom portion 1a ₂ inside the casing 1 3b Gaho pot vertical shape It is mounted via the inflow joint 3c. The outflow opening 3a, that is, the lower end of the internal outflow pipe 3b is located above the substantially center of the casing 1 in the height direction. Here, the substantially center in the height direction of the casing 1 includes a position slightly lower than the center. The upper end of the inner flow extraction tube 3b which is the outlet opening 3a locations, it is not preferable in proximity to the top 1a ₁ of the casing 1.

The inflow portion 2 and the outflow portion 3 have an indirect positional relationship in the casing 1. That is, as shown in FIGS. 1 (A) and 1 (B), when hot water flowing from the inflow portion 2 once enters the casing 1 and its water level reaches the position of the outflow opening 3a, and when the water level exceeds that position, The hot water flows out of the outflow portion 3. In other words, the hot water from the water heater 5 flows into the casing 1 through the inflow portion 2 and is stored in the casing 1 or the outflow portion 3 through the casing 1 And supplies hot water to the water supply device 8 through the pipe 7.

That is, the inflow portion 2 and the outflow portion 3 are indirectly connected via the casing 1, and even if the inflow portion 2 and the outflow portion 3 are not connected, the inflow portion 2 and the outflow portion 3 are not connected. The structure does not include a structure in which hot water flowing from the outside is stored in the casing 1 or most of the hot water flows directly into the outflow portion 3 without passing through the casing 1.

When hot water from the water heater 5 flows into the casing 1 through the inflow portion 2, the hot water is stored in the casing 1 up to the position of the outflow opening 3a of the internal outflow pipe 3b. Then, when the level of the hot water is the same as or exceeds the position of the outflow opening 3a, the hot water flows out of the outflow portion 3 to the outside of the casing 1, and the hot water can be supplied to a water supply device 8 such as a shower device or a faucet. it can. Thus, a predetermined amount of hot water supplied from the water heater 5 can be stored in the casing 1.

As the internal inflow pipe 2b and the internal outflow pipe 3b, specifically, pipes (pipes) having a circular cross section are used. These are mainly made of metal tubes, but synthetic resin tubes such as vinyl chloride tubes may be used. The internal inflow pipe 2b and the internal outflow pipe 3b are screw-fixed to the inflow joint section 2c and the outflow joint section 3c, but other fixing means such as press-fitting, adhesive, welding and the like are used. You may. Further, the inflow joint part 2c is intended to fix the inner inlet pipe 2b in the casing 1, as described above, it is a support portion 2c ₁ and the communicating portion 2c ₂ Prefecture.

The support portion 2c ₁ is a portion for fixing and supporting the internal inflow pipe 2b to the casing 1, and as shown in FIG. 1C, mainly includes two flange-like members 2c ₁₁ and 2c ₁₂ Rannahli has a structure which is fixed by sandwiching the top portion 1a ₁ vertically. Between the two flange-like member 2c _11, 2c ₁₂ and the top portion 1a ₁ packing material 2c ₁₃ is mounted, it is assumed to have a watertight.

The top 1 a of the casing 1₁Support 2c in the through hole formed in₁Is mounted, and the support portion 2c₁The internal inflow pipe 2b is mounted via the. Specifically, the support portion 2c₁Is formed with an internal thread, and an internal thread is formed with the internal inflow pipe 2b.₁And the internal inflow pipe 2b are screwed together. Also, the support portion 2c ₁ To the communication portion 2c_TwoIs attached. The communication part 2c_TwoIs a portion connected to the pipe from the water heater 5.

As shown in FIG. 1C, an adapter 2c ₃ is mounted on the communication portion 2c ₂ of the inflow joint portion 2c. Adjustment tube 10 corresponding to the various pipe sizes has become attachable to the adapter 2c _3. The adapter 2c ₃ is without a bag nut shape, the inner periphery and internal threads are formed in the retaining ring 2c _4, etc. to the communicating portion 2b _2, it is rotatably fixed. The adjusting tube 10 has a cylindrical shape, and is formed with an outer screw 10a and an adjusting inner screw 10b. The adjusting pipe 10 can be connected to the hot water supply pipe 6 having various screw sizes by arranging the inner diameter of the inner screw 10b of various sizes.

The inflow joint portion 3c fixes the internal outflow tube 3b in the casing 1, as shown in FIGS. 1B and 2, and supports the internal inflow tube 2b. and a substantially similarly to the supporting portion 3c ₁ and the communicating portion 3c ₂ Metropolitan structure. Before Symbol supporting portion 3c ₁ is Ru sites der to fix and support the internal outlet pipe 3b to the casing 1.

The supporting portion 3c ₁ has substantially the same structure as that of the inflow joint portion 2c. As shown in FIG. 2A, the supporting portion 3c ₁ includes two flange-like members 3c ₁₁ and 3c ₁₂ and the bottom portion 1a ₂ Are fixed by sandwiching them vertically. Also between the two flange-like member 3c _11, 3c ₁₂ and the bottom 1a ₂ packing material 3c ₁₃ is mounted, it is assumed to have a watertight. Although not specifically shown, also the communicating portion 3c ₂ Contact Keru the outflow joint part 3c side, the adapter and the control pipe 11 or the like similarly to the inflow joint part 2c side as required is mounted, piping of various sizes The structure can be adapted to 7.

The bottom 1 a of the casing 1_TwoSupport part 3c in the through hole formed in₁Is mounted, and the support portion 3c₁The internal outflow pipe 3b is mounted via the. Specifically, the support portion 3c₁Is formed with an internal screw, and an internal screw is formed with the internal outflow pipe 3b.₁And the internal outflow pipe 3b are screwed. Also, the support 3c ₁ To the communication portion 3c_TwoIs attached. The communication part 3c_TwoIs connected to a pipe for supplying hot water inside the casing 1 to a shower device, a faucet or the like. Communication part 3c_TwoAs described above, various types of corresponding sizes can be installed according to the pipe size. FIG. 6 is a schematic view of the first embodiment. When hot water flows from the water heater 5 through the inflow portion 2 and the water level reaches the outflow opening 3a in the casing 1, the hot water flows from the casing 1 to the water supply device. 8 is shown.

Next, in the second embodiment of the present invention, as shown in FIG. 7, the inflow section 2 does not use the internal inflow pipe 2b described in the first embodiment. That is, the top portion 1a ₁ of Ke pacing 1, only the support portion 2c ₁ and the communication unit 2c ₂ is on purpose shaped to be mounted. Further, in this embodiment, the inlet opening 2a is intended to be formed substantially flush with the lower surface of the top 1a _1. Also in this embodiment, as described above, the mutual positional relationship between the inflow portion 2 and the outflow portion 3 does not match in the vertical direction. This also has a structure in which the hot water flowing from the inflow portion 2 once enters the casing 1, and after the water level reaches the position of the outflow opening 3 a, the hot water can flow out of the outflow portion 3.

Next, in a third embodiment of the present invention, as shown in FIG. 8, the inflow portion 2 is provided on a side surface portion 1 a ₃ of the casing 1. In this case, the position of the inlet 2, the suspension can be any position in the height direction of the side portion 1a _3, it is preferably connected above substantially the center in the height direction of the side portion 1a ₃ downward position Things. In this implementation form, since the inflow section 2 located near the bottom 1a ₂ of the casing 1 is mounted, the inflow joint part 2c is mounted on the bottom part 1a _2. Also, an internal inflow pipe 2b is attached as needed. In this embodiment, inlet 2 is positioned on the side surface 1a ₃ of the casing 1, when the inflow of water from the water heater 5 becomes a convection hot water is circulated to flow laterally inside the casing 1, in particular water This has the advantage that the temperature is easily kept constant.

Next, as a fourth embodiment of the present invention, as shown in FIG. 9, an inflow portion 2 is provided at a bottom 1 a ₂ of a casing 1. Also in this case, the internal inflow pipe 2b is attached as needed, but when the internal inflow pipe 2b is used, the position of the inflow opening 2a is determined by the length of the internal inflow pipe 2b. Preferably, the height position of the inflow opening 2a is set lower than the outflow opening 3a.

Next, a fifth embodiment of the present invention, as shown in FIG. 10, the outlet portion 3 and is provided in the side surface portion 1a ₃ of the casing 1. In this embodiment, it is necessary to outlet portion 3 is positioned above the approximate center of the height direction of the side portion 1a _3. In this embodiment, the outflow portion 3 is only the inflow joint portion 3c, and the internal outflow tube 3b is not particularly required, but the internal outflow tube 3b may be attached.

Next, as a sixth embodiment of the present invention, as shown in FIG. 11, a partition wall 3 d is formed near the outflow portion 3 side of the casing 1. The upper end of the partition wall 3d is this that the positioned above locations from substantially the center in the height direction of the casing 1, the outlet opening 3a is formed between the top portion 1a ₁ of the upper end and the casing 1 of the partition wall 3d And The partition wall 3d is formed of the same material as the casing 1 by a metal plate or the like, or is formed of a synthetic resin.

When the casing 1 is composed of the main body 1a and the cover 1b of the casing 1 described above, the partition wall 3d comes into contact with the main body 1a and the cover 1b in a watertight manner, and the outflow opening 3a is formed. It is configured so that hot water does not leak from other locations. The partition wall 3d is joined to the main body 1a side or the cover 1b side of the casing 1 by welding means, an adhesive or other watertight means. In the sixth embodiment, the area surrounded by the partition wall 3d and the casing 1 plays the same role as the internal outflow pipe 3b, and the internal outflow pipe 3b is not required. It is sufficient that only the inflow joint 3c is mounted.

The shape of the casing 1 in each of the above-described embodiments is a cubic shape such as a substantially rectangular parallelepiped shape as shown in the figure, but is not necessarily limited to such a shape, and may be changed as necessary. Thus, the casing 1 may have a cylindrical shape, a spherical shape, a capsule shape, or the like. Also in this case, the inflow section 2 and the outflow section 3 are indirect piping. The internal inflow pipe 2b and the internal outflow pipe 3b may be directly fixed to the casing 1 by welding means or the like without using the inflow joint part 2c and the outflow joint part 3c.

Next, as a seventh embodiment of the present invention, in each of the above-described embodiments, the casing 1 has a heat insulating structure so that the casing 1 has a heat retaining property. As a specific structure, there are mainly two types. As a first type, as shown in FIG. 12A, the casing 1 is composed of a main body 1a and an outer layer 1f. or it is formed in a plate structure, or glass wool, heat insulating material 1e having heat insulating properties such as foamed synthetic resin is decorated or filled as an interior heat insulating material 1 e ₁ double plate with its body portion 1a and the outer layer portion 1f Sometimes. The outer layer portion 1f has a substantially similar shape to the extent that it is slightly larger than the main body portion 1a. Further, the serves cover 1b also a double plate structure, the interior heat insulating material 1e ₁ is furnished or filled.

Further, as a second type of the seventh embodiment, as shown in FIG. 12B, the outside of the casing 1 is configured to be held by a heat insulating material 1e. In this case, the heat insulating material 1e is glass wool, foamed synthetic resin, ceramics, or is formed as筺-like from cloth or the like, or used as a holder-insulation material 1e ₂ formed into a sheet or the like. Thus, it is an insulating structure as the casing 1 is wrapped embraced heat insulator 1e _2. When the heat insulating material 1e is formed in a housing shape, a mold is formed by various hardeners or the like using a mold frame or the like, and the mold material is such that the casing 1 enters into the inside. .

With such a structure, even in a cold region, the casing 1 is prevented from being affected by the outside air temperature, whereby the temperature of the hot water stored in the casing 1 can be made almost constant, Alternatively, the change in the hot water temperature can be minimized. This makes it possible to maintain a stable hot water temperature even in intermittent use of the water heater 5 in a cold region, and to provide a comfortable hot water supply. It is sufficient that the water heater 5 is a commonly used one. The water heater 5 includes an internal pipe and a heating section 5a such as a gas burner for heating water flowing in the internal pipe. Various components including the heating section 5a and various sensors and valves are covered with a cover body 5b.

As shown in FIG. 13, there is an embodiment in which the hot water temperature maintainer of the present invention is incorporated in the water heater 5. Specifically, a pipe 5c in the water heater passing through a heating section 5a such as a gas burner incorporated in the water heater 5 described above is connected to the inflow section 2 of the water temperature maintainer. Are stored in the cover 5b of the water heater 5. As a result, the hot water temperature maintenance device of the present invention is installed inside the water heater 5, so that the hot water supply equipment can be compactly installed, the installation work can be simplified, and the space can be saved very much. It can be advantageous.

[0036]

[Action]

First, in the hot water temperature maintainer of the present invention, the inflow portion 2 is connected to the water heater 5 through the hot water supply pipe 6. In this case, the connection between the inlet 2 and the hot water supply pipe 6, the communicating portion 2c ₂ of the inflow joint part 2c is corrected to a proper value corresponding to the size of the hot water supply pipe 6 are selectively used. Further, the outflow portion 3 of the hot water temperature maintainer and a water supply device 8 such as a shower and a faucet are connected via a pipe 7.

First, when a cock (water faucet) of the water supply device 8 starts a hot water supply operation, a heating unit 5 a such as a gas burner is started in the water heater 5, water heating is started, and the hot water supply pipe 6 is turned on. The hot water is supplied into the casing 1 from the inflow portion 2 of the hot water temperature maintainer of the present invention. The hot water flowing from the inflow portion 2 into the casing 1 of the hot water temperature maintainer accumulates in the casing 1 until it reaches the position of the outflow opening 3 a of the outflow portion 3.

When the water level of the hot water in the casing 1 increases and passes through the outflow opening 3a, the hot water enters the outflow opening 3a and starts flowing out of the casing 1 through the outflow opening 3a. At this time, if the internal outflow pipe 3b is attached, the hot water flows out of the casing 1 through the internal outflow pipe 3b. As shown in FIG. 3, the hot water flowing out of the casing 1 flows through the pipe 7 to eight water supply devices such as showers and faucets. In this state, the water supply device 8 is used normally.

Next, an intermittent use state in which hot water supply from the water supply device 8 is repeatedly used in a short time will be described with reference to FIG. In this use state, for example, hot water supply is repeated with a stop time of about 2 to about 10 minutes when the temperature of the hot water may greatly change. First, as shown in FIG. 5 (A), the position of the outflow opening 3a in the casing 1 is the height h _1. The hot water is already stored in the casing 1 for intermittent use. The standard water level h ₂ of the storage water.

Next, immediately after the hot water supply of the water heater 5 is stopped, the hot water is restarted after the above-mentioned short stop time, and the hot water remaining in the water heater 5 is removed from the casing 1. Sent inside. Then, mix and storage hot water in the casing 1, while water heater 5 or we fed the residual high boiling water is lowered to a suitable temperature, next increasing the water level h ₃ is raised the water level, this increased level h ₃ FIG 5 (B) as shown in, is the outlet external to provide a water supply device 8 through the pipe 7 of the opening 3a of the height h ₁ casing 1 from the outlet portion 3 beyond.

Further, the ignition of the heating unit 5a is started with a slight delay from the start of the hot water supply of the water heater 5, and the unheated cold water due to the ignition time delay is supplied to the casing via the inflow section 2 next to the high-temperature hot water. 1 will be sent temporarily. This cold water is also mixed with the hot water stored in the casing 1 and sent to the pipe 7 at a substantially constant hot water temperature so as to prevent a sharp drop in the hot water temperature, thereby providing a constant-temperature hot water to the water supply device 8. It can be. As described above, the hot water temperature maintenance device of the present invention eliminates the state in which cold water suddenly comes out of the hot water immediately after restarting the hot water supply when the hot water heater 5 is intermittently used. Provide hot water temperature.

[0042] The hot water temperature maintainer of the present invention also serves to prevent a water hammer phenomenon. This is because the hot water supply from the water heater 5 is temporarily stored in the casing 1, but even if the hot water is intermittently used, the impact caused by the water hammer action due to the water pressure immediately after the start of the start-up is limited to the inside of the casing 1. It is absorbed by the gap s generated above the outflow opening 3a (see FIG. 4). This area is free of hot water and is an air layer. The body expands and contracts even when pressure is applied, so it is easy to absorb impact. As a result, vibration and impact can be prevented, and adverse effects on piping, equipment, and the like can be prevented.

[0043]

[Effect of the invention]

 The invention according to claim 1 is characterized in that the casing 1, the inflow section 2 through which the hot water passing through the heating section 5 a flows into the casing 1, and the outflow opening located above the substantially center in the height direction inside the casing 1. The casing 1 is a hot water temperature maintainer of a hot water supply facility capable of storing hot water up to the position of the outflow opening 3a, so that the water supply equipment such as a shower and a faucet is provided in the hot water supply facility. 8, when these are used intermittently in a short period of time of about 1 to 5 minutes, there is almost no change in the hot water temperature to the extent that it can be felt, and hot water can always be supplied at a stable hot water temperature. is there.

The invention according to claim 2 is characterized in that the casing 1, the inflow portion 2 connected to the water heater 5, and into which the hot water flows into the casing 1, and an upper part of the inside of the casing 1 in the height direction are provided. The casing 1 is a hot water temperature maintenance device of a hot water supply facility capable of storing hot water up to the position of the outflow opening 3a. Even if hot water is used intermittently in bathroom showers, kitchen taps and other hot water supply locations, hot water can be supplied to the water supply device 8 while maintaining a substantially constant hot water temperature. However, there is an effect that the equipment for this can be extremely simplified.

The effect is described in detail. The outflow opening 3a is located above the substantially center in the height direction inside the casing 1, and the hot water can be stored up to the position of the outflow opening 3a. is there. That is, the inflow portion 2 and the outflow portion 3 are not directly connected but are indirectly connected in the casing 1, and the hot water flowing into the inflow portion 2 from the water heater 5 is directly connected to the inflow portion 2 and the outflow portion 3. The hot water is not stored in the outflow opening 3a of the outflow portion 3 but is temporarily stored in the casing 1.

Therefore, in response to a change in the temperature of the hot water supplied from the water heater 5, the hot water can flow out while being mixed with the hot water stored in the casing 1. Prevents an unstable state in which the temperature of the hot water that changes from hot water to cold water immediately after startup suddenly changes during use.The temperature of the hot water immediately after startup is almost constant, or even if there is a change in the temperature of the hot water, the temperature difference is reduced. Minimal and stable hot water can be provided. This makes it possible to comfortably perform washing, washing, shampooing, or kitchen tap water, particularly with a bathroom shower. Further, in spite of such excellent effects, the configuration of the present invention can be provided with a small number of components, a very simple structure, and a low price.

Further, since the hot water supply from the water heater 5 is temporarily stored in the casing 1, the water hammer action coming from the water pressure immediately after the start of starting the water supply device 8 despite the intermittent use thereof. Thus, it is possible to eliminate, reduce, or mitigate the impact on each piping, equipment, and utensils of the hot water supply facility. This is because the air gap s, which is an air layer formed above the stored water level in the casing 1, serves to absorb and mitigate the impact due to the water hammer, and prevents vibration and impact due to the water hammer action. The adverse effect on the equipment can be prevented.

The invention according to claim 3 is that the casing 1 is connected to the water heater 5 so that the hot water flows into the casing 1, and at least the height direction from the bottom 1 a ₂ side of the casing 1. And an outflow portion 3 provided with an internal outflow pipe 3b having an outflow opening 3a into which the hot water is fed. The casing 1 is capable of storing hot water up to the position of the outflow opening 3a. By using the hot water temperature maintenance device of the hot water supply facility, the position of the outflow opening 3a can be appropriately set by the internal outflow pipe 3b, and the configuration of the present invention can be extremely simplified.

To describe the above effect in detail, the position of the outflow opening 3a is determined by the length of the internal outflow pipe 3b. The amount of hot water stored in 1 can be set appropriately, and the simplest configuration can be achieved.

According to a fourth aspect of the present invention, in the first aspect, the inflow portion 2 is provided with an internal inflow pipe 2 b having an inflow opening 2 a located substantially below a center in a height direction in the casing 1. By using the hot water temperature maintenance device of the hot water supply equipment, it is possible to stabilize the hot water temperature in the casing 1 in a very short time and provide a stable hot water temperature in intermittent use of hot water.

To explain the above effect in detail, when the water heater 5 is used intermittently, the hot water flowing into the casing 1 is provided so that the internal inflow pipe 2b enters the stored hot water. Thereby, it is sent into the hot water stored in the casing 1. In other words, since the inflow opening 2a of the internal inflow pipe 2b is located below the level of the hot water stored in the casing 1, the hot water discharged from the inflow opening 2a becomes faster than the hot water stored in the casing 1. it is possible to mix hot water that flows from the inlet opening 2a in the casing 1 abuts the bottom 1a ₂ of the casing 1, by generating a water flow in the storage hot water, so that this is to promote the stirring action. As a result, mixing with the stored hot water in the casing 1 can be performed more efficiently, the time during which the hot water temperature becomes constant can be shortened or almost instantaneous, and the water supply device 8 can be stabilized. Hot water can be provided.

According to a fifth aspect of the present invention, in the first aspect, since the casing 1 is a hot water temperature maintainer of a hot water supply facility having a heat retaining structure, the temperature of the casing 1 is maintained substantially constant. Therefore, even in a cold region, the casing 1 is prevented from being affected by the outside air temperature, whereby the temperature of the hot water stored in the casing 1 is made substantially constant, or a change in the hot water temperature is minimized. be able to. Thus, even when the water heater 5 is used intermittently in a cold region, a stable hot water temperature can be obtained and a comfortable hot water supply can be achieved.

[Brief description of the drawings]

FIG. 1A is a perspective view of the hot water temperature maintainer of the present invention, excluding a cover portion. FIG. 1B is a front view of a partial cross section of FIG. 1A, and FIG. Enlarged view with a partial cross section of

FIG. 2 (A) is a longitudinal sectional side view of the present invention. (B) is an exploded longitudinal sectional view of (A).

FIG. 3 is a schematic diagram of a hot water supply system using the present invention.

4A is a schematic view showing a state in which a water heater and the present invention are mounted, and FIG. 4B is an operation view of a state in which a water hammer phenomenon of the present invention is prevented.

5A is a schematic diagram showing a comparison between the water level of the hot water in the casing and the height position of the outflow opening, and FIG. 5B is a schematic operational diagram showing the hot water temperature maintaining structure of the present invention.

FIG. 6 is a schematic view of the first embodiment of the present invention.

FIG. 7 is a schematic view of a second embodiment of the present invention.

FIG. 8 is a schematic view of a third embodiment of the present invention.

FIG. 9 is a schematic view of a fourth embodiment of the present invention.

FIG. 10 is a schematic view of a fifth embodiment of the present invention.

FIG. 11 is a schematic view of a sixth embodiment of the present invention.

12A is a schematic diagram of a first type of a seventh embodiment of the present invention, and FIG. 12B is a schematic diagram of a second type of a seventh embodiment of the present invention.

FIG. 13 is a schematic view of an embodiment in which the hot water temperature maintainer of the present invention is incorporated in a water heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Inflow part 2a ... Inflow opening 2b ... Internal inflow pipe 3a ... Outflow opening 3 ... Outflow part 5 ... Water heater 5a ... Heating part

Claims (5)

[Utility model registration claims] A casing, an inflow section into which hot water flowing through the heating section flows into the casing, and an outflow section having an outflow opening located above a substantially center in the height direction of the inside of the casing; The hot water temperature maintenance device of the hot water supply equipment, wherein the casing can store hot water up to the position of the outflow opening. 2. A casing, an inflow portion connected to the water heater and into which the hot water flows into the casing, and an outflow portion having an outflow opening located above a substantially center in the height direction inside the casing. Wherein the casing is capable of storing hot water up to the position of the outflow opening. 3. A casing, an inflow portion connected to the water heater and into which the hot water flows into the casing, and a hot water supply unit located at least above a substantially center in a height direction from a bottom side in the casing. A hot water temperature maintainer for hot water supply equipment, comprising: an outflow portion provided with an internal outflow pipe having an outflow opening to be fed in, wherein the casing can store hot water up to the position of the outflow opening. 4. A casing, comprising an inflow portion into which hot water passing through the heating portion flows into the casing, and an outflow portion having an outflow opening located above a substantially center in the height direction of the inside of the casing. The casing is capable of storing hot water up to the position of the outflow opening, and the inflow section is provided with an internal inflow pipe having an inflow opening located substantially below a center in a height direction in the casing. The hot water heater of the hot water supply equipment. 5. A casing, comprising an inflow portion into which hot water flowing through the heating portion flows into the casing, and an outflow portion having an outflow opening located above a substantially center in the height direction of the inside of the casing, The casing is capable of storing hot water up to the position of the outflow opening, and the casing has a heat retaining structure.