JPH0594620U - Water heater - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention divides cold water in a hot water supply pipe into a hot water storage pot and a hot water supply side pipe, and mixes it with high temperature water in the hot water supply pipe to discharge hot water. The purpose is to have done. [Configuration] A baffle plate 21 is attached inside a hot water pipe 18 to a hot water storage pot 16 connected between the main heat source device 11 and the hot water tap 14, and the baffle plate 21 corresponds to the side of the hot water pipe 18. Side hot water pipes 22 are provided side by side.
It is characterized in that the hot water from the main heat source device 11 is connected to the hot water supply side pipe 23 on the outer side of 6 to split the hot water from the hot water storage pot and the hot water supply side pipe, and then joins again to discharge hot water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hot water supply device that uses a water heater or an instantaneous water heater that is a main heat source device, in which hot water generated by the main heat source device is heated to a desired temperature without being hindered by the length of the hot water supply pipe. Regarding the improvement of the hot water supply system so that the hot water supply place can be quickly and reliably supplied.

[0002]

[Prior Art]

 In recent years, housing with a wide floor plan has gradually become popular due to improvement in housing conditions. Further, in the above-mentioned houses, so-called central hot water supply tends to increase by using a main heat source device such as a large-sized water heater or an instantaneous water heater. In this case, the places where the hot water generated by the main heat source units are used are divided into kitchens, bathrooms, washrooms, etc., and the distance between each of the above-mentioned places of use and the main heat source units is considerably large. Because of the large amount of water, the hot water supply pipes inevitably become long. For this reason, when hot water is not discharged, cold water remains in the hot water supply pipe, so even if the hot water tap is opened at the place of use, for example in the kitchen, hot water at a temperature that can be used is discharged. However, there were many problems such as wasteful drainage without using cold water, as well as taking a considerable amount of time. Especially in winter, since the piping itself is cold, the above-mentioned problem becomes noticeable. In this respect, central hot water makes no sense, and especially in the kitchen, it was not a long time to wait.

In view of the above problems, recently, for example, as shown in FIG. 3, a heater H for keeping heat is provided between a main heat source device 1 such as an instantaneous water heater and a hot water tap 2 for mixing hot and cold water. The built-in hot water storage port 3 is arranged via the hot water discharge pipes 4 and 5, and the hot water storage pot 3 mixes the cold water in the hot water discharge pipe 4 at the early stage of hot water discharge with the hot water in the hot water storage pot 3. A hot water supply device 8 has been developed which is constructed so that it is mixed with cold water from a mixing water supply pipe 7 from a hot water spout 2 through a hot water spout 6 through a hot water spout 5 to form hot water at an appropriate temperature.

[0004]

[Problems to be solved by the device]

 In the hot water supply device 8 having the above structure, all of the cold water in the hot water supply pipe 4 in the initial hot water discharge flows into the hot water storage pot 3, so that the cold water is spouted from the hot water tap 2 when hot water is used. On the other hand, when cold water flows into the hot water storage pot 3, the hot water in the upper part of the hot water storage pot 3 is discharged with almost no mixing with the cold water, and water is supplied from the mixing water supply pipe 7 and the tap. There was a risk of burns, etc., as most of the water was heated in the high temperature state at the beginning of hot water, with only part of the water being mixed in No. 2.

Further, in the initial stage of hot water discharge, as described above, most of the high temperature water flows out as it is, and then the cold water flowing into the hot water storage pot 3 and the residual hot water having a relatively low hot water temperature are mixed. The low-temperature water in the state is discharged, and then the hot water from the main heat source unit 1 is mixed with the cold water at the tap 2 to discharge the hot water. Therefore, even in the hot water supply device 8 including the hot water storage pot 3 Except that cold water spouting can be prevented, the temperature of the hot water spouted from the tap 2 is not constant at the beginning of tapping, and the temperature changes drastically, so it cannot be used properly unless a special hot / cold water mixing valve is installed. there were.

In view of the above problems, the present invention prevents the discharge of hot water such as high temperature water and low temperature water in the initial stage of hot water, which has a large temperature change, and equalizes the hot water discharge temperature in the initial stage of hot water discharge. In addition to eliminating accidents caused by hot water coming out of hot water to improve safety, the cold water flowing into the hot water storage pot is effectively used to prevent a drop in hot water temperature in the hot water storage pot, and the initial hot water discharge to the hot water storage pot. It is an object of the present invention to provide a hot water supply device capable of efficiently using the cold water flowing into the water.

[0007]

[Means for solving the problem]

 In order to achieve the above-mentioned object, the present invention connects a main heat source device such as a water heater and a hot water supply pipe attached to the lower part of the hot water storage pot with a hot water supply pipe, and the inside of the hot water supply pipe below the hot water storage pot is A baffle plate is attached to the hot water supply pipe at a narrow interval, and a hot water supply connected to the hot water supply pipe attached to the upper side of the hot water storage pot at the side of the hot water supply pipe corresponding to the baffle plate. The side pipe is connected to the outside of the hot water storage pot by piping, and the hot water supply device is configured by connecting the hot water supply side pipe and the tap pipe of the hot water storage pot to the tap tap with a tap pipe. Therefore, the action is as follows.

[0008]

[Action]

 According to the present invention, a hot water supply pipe at the bottom of the hot water storage pot and the main heat source device are connected by a hot water supply pipe, and a baffle plate is disposed in the hot water storage pot in correspondence with the hot water supply pipe. A hot water supply device was provided by connecting a hot water supply side pipe that communicates with the hot water discharge pipe above the hot water storage pot with the opening facing the baffle plate, so that it remains in the hot water supply pipe at the initial stage of hot water discharge. The cold water that is flowing in once flows into the pot from the hot water pipe of the hot water storage pot, but due to the presence of the baffle plate, it is diffused into the pot and mixed with the hot water, pushed up in the pot, and part of it The baffle plate suppresses the push-up into the pot, and it flows through the side hot water pipe to the hot water supply side pipe as it is. High temperature By mixing with, it can be water discharge temperature of hot water that is suitable for use from the hot water faucet.

Therefore, when hot water in the hot water storage pot is opened at the beginning of hot water, when the hot water tap is opened, the problem such as burns caused by hot water coming out with insufficient mixing with the cold water from the mixing water supply pipe is ensured. Therefore, hot water with the optimum temperature for hand washing and face washing can be discharged. In addition, the high temperature water supplied from the main heat source to the hot water storage pot can be diverted into the hot water storage pot and the hot water supply side pipe due to the presence of the baffle plate, and can be sent to the hot water outlet faucet. The rapid tapping of water can be suppressed, and as a result, the temperature drop of the hot water in the hot water storage pot due to the inflow of cold water from the hot water inlet pipe at the beginning of tapping can be significantly suppressed, and the effective use of high temperature water can be effectively planned. .. Moreover, since the hot water supply side pipe is provided outside the hot water storage pot so as to communicate with the hot water discharge pipe of the hot water storage pot, the water in the hot water supply side initial hot water supply side pipe is at a temperature close to cold water, so the hot water storage pot As a result of being able to efficiently mix with the hot water discharged from the inside, it is possible to reliably prevent the problem of hot water being discharged as soon as the tap is opened, and it is possible to properly discharge hot water suitable for use.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a schematic configuration diagram showing the whole of the hot water supply device of the present invention. In FIG. 2, reference numeral 11 denotes a main heat source unit, for example, an electric water heater or a gas instantaneous water heater, and the The cold water is heated to a predetermined temperature and fed to the hot water supply pipe 13. Reference numeral 14 denotes a hot water tap, and in this embodiment, a hot and cold water mixing tap is used, and a hot water tap 14 is connected to a water supply pipe 15 for mixing which is branched from a water flow pipe 12 for flowing water to the main heat source unit 11. Has been done. Reference numeral 16 denotes a hot water storage pot arranged between the main heat source device 11 and the hot water tap 14, and has a built-in heater 16a for keeping the hot water at a constant temperature.

Next, the structure of the hot water storage pot 16 will be described with reference to FIG. In FIG. 1, reference numeral 17 denotes a can body of a hot water storage pot 16, which is formed by combining a pair of metal plates having excellent water resistance such as a stainless steel plate and pressed into a bowl shape. The pipes 18 are fixed to the upper part by welding or the like so that the hot water discharge pipes 19 communicate with the inside of the hot water storage pot 16, respectively. The hot water supply pipe 18 is connected to the hot water supply pipe 13 between the main heat source device 11 and the hot water discharge pipe 19 is connected to the hot water discharge faucet 14 by a hot water discharge pipe 20. Further, a lower part of the hot water storage pot 16 inside the hot water supply pipe 18 is provided with a baffle plate 21 in the shape of a basin having a narrow space between the open end of the hot water supply pipe 18 and the lower end thereof. It is installed in a connected state. Further, a side hot water pipe 22 is attached to a side portion of the hot water supply pipe 18 at a lower portion of the hot water storage pot 16 so as to face the baffle plate 21. A hot water supply side pipe 23 is connected to the hot water outlet pipe 19 outside the hot water storage pot 16 so as to communicate with the inside of the hot water storage pot 16. 24 is a drainage drain. Further, the hot water supply pipe 13 and the hot water supply pipe 18, the hot water supply side pipe 23 and the side hot water pipe 22, the hot water supply side pipe 23 and the hot water discharge pipe 19, and the hot water supply pipe 20 and the hot water discharge pipe 19 are watertight by using a cap nut 25, respectively, and It is connected so that it can be detached. Further, the hot water storage pot 16 is made of a material having a good heat retaining property and, as shown in FIG. 2, is surrounded by an appropriate heat insulating material.

In the above-mentioned structure, the hot water storage pot 16 is connected to a power source (not shown) to energize the heat-retaining heater 16a, so that the water (hot water) filled in the inside is heated to a predetermined level by the heater 16a. It is kept warm at the temperature. Further, when the temperature of the hot water in the hot water storage pot 16 becomes equal to or lower than the preset temperature, the temperature sensor (not shown) energizes the heater 16a for keeping the temperature and maintains the temperature at a predetermined temperature.

Next, description will be given of a case where appropriate temperature water is discharged from the discharge tap 14. First, when the tap tap 14 is opened at the initial stage of tapping, cold water is passed from the water pipe 12 to the main heat source unit 11. Due to the inflow of the cold water, high-temperature water corresponding to the inflow amount of the cold water is fed from the main heat source device 11 to the hot water pipe 13. On the other hand, cold water remains in the hot-water inlet pipe 13 into which the high-temperature water flows, and the cold water in the hot-water inlet pipe 13 is extruded from the main heat source device 11 to cause the hot-water inlet pipe 18 of the hot-water storage pot 16 to flow. Flows into the pot 16. However, as shown in FIG. 1, since a baffle plate 21 is attached to the lower portion of the hot water storage pot 16 in correspondence with the hot water supply pipe 18, the hot water supply pipe 18 flowing into the hot water storage pot 16 from the hot water supply pipe 18 The cold water from 13 is once received by the lower surface of the baffle plate 21 and then passes through a gap S between the peripheral edge of the baffle plate 21 and the lower surface of the hot water storage pot 16 and is mostly in the hot water storage pot 16. While being pushed up to the upper part, it mixes with the hot water in the hot water storage pot 16.

A part of the cold water flowing into the hot water storage pot 16 is once received by the baffle plate 21 and then stored in the hot water storage pot 16 in a side hot water pipe 22 attached to the side of the hot water supply pipe 18. Cold water that flows in in a state of being mixed with hot water and remains in the hot water supply side pipe 23 that is connected to the side hot water pipe 22 (the hot water supply side pipe 23 is piped outside the can body 17, so The water in the pipe 23 has a relatively low temperature because it does not benefit from the heater 16a for heat retention even if the hot water supply side pipe 23 itself is surrounded by a heat insulating member). Push up to the 19 side. Thus, when the cold water in the hot water supply pipe 13 flows into the hot water storage pot 16, the cold water is diverted by the baffle plate 21, and most of the cold water is mixed with the hot water in the hot water storage pot 16, but a part of the hot water is supplied. It will flow into the side pipe 23 side.

Therefore, in the hot water outlet pipe 19 of the hot water storage pot 16, the hot water discharged from the inside of the pot 16 and the cold water flowing out from the hot water supply side pipe 23 are mixed well, and the hot water discharge pipe 20 provides hot water mixing performance. It is possible to feed the hot water to the hot water tap 14, and if necessary, the hot water tap 14 mixes with cold water flowing from the water supply pipe 15 for mixing, lowers the temperature to a usable temperature, and taps the hot water. As a result, at the early stage of hot water, the hot water in the hot water storage pot 16 does not come out to the hot water tap 14 as it is, so it is used for washing in the kitchen, hand washing on the washbasin, face washing, etc. The tap water at the optimum temperature that meets the requirements can always be satisfactorily performed. Further, by providing the hot water supply side pipe 23 on the outside of the can body, the hot water discharged from the main heat source device 11 is not allowed to flow into the hot water storage pot 16 as it is, but is split into the hot water storage pot 16 and the hot water supply side pipe 23. Since the method of supplying hot water to the hot water tap 14 is adopted, the problem that the high temperature water in the upper part of the hot water storage pot 16 is discharged from the hot water tap 14 as it is at the beginning of hot water and the temperature of the hot water in the hot water storage pot 16 is reduced is solved. Therefore, the hot water in the hot water storage pot 16 can be efficiently used, and the hot water storage pot 16 itself can be downsized.

[0016]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. (1) At the initial stage of hot water discharge, hot water from the hot water storage pot and cold water from the hot water supply side pipe can be mixed well in the hot water discharge pipe, and the hot water can be burned as it is. Since it is possible to reliably prevent the problem of high temperature, it is possible to use hot water safely. (2) Also, at the initial stage of hot water discharge, cold water that flows into the hot water storage pot is split into the hot water storage pot and the hot water supply side pipe by the baffle plate provided in the hot water storage pot. The hot water in the hot water storage pot can be effectively prevented from suddenly decreasing and can be used for a long time, so that the high temperature water can be effectively used and the fluctuation of the hot water discharge temperature can be suppressed, and the performance of the hot water supply device can be improved. Is possible. (3) Further, since the hot water supply side pipe is connected to the outside of the hot water storage pot so as to be able to communicate with the pot, the hot water storage pot can be satisfactorily hollowed out, so the hot water storage port has a simple structure. As a result, the heat retention heater can be easily arranged at any place inside the can, and the warm water in the hot water storage pot can be effectively retained. In addition, since the hot water supply side pipe is installed outside the hot water storage pot, cold water with a relatively low temperature remains inside at the beginning of hot water discharge, and this cold water is effectively used as high temperature water discharged from the hot water storage pot. Since they can be mixed and mixed, an accident due to hot water coming out of the hot water can be prevented. Moreover, since the hot water storage pot has a flow dividing function by the baffle plate and the hot water supply side pipe, it becomes possible to guide the high temperature water from the main heat source device to the hot water tap satisfactorily and quickly. As a result, it is not necessary to store more hot water than necessary in the hot water storage pot, so the hot water storage pot can be made smaller. Moreover, when the hot water in the hot water storage pot flows out, the residual cold water in the hot water supply pipe mainly flows out of the hot water storage pipe into the hot water storage pipe, but in this case, the main heat source unit discharged from the hot water supply pipe Since the high temperature water from the hot water flows out of the hot water supply side pipe and can be mixed well in the hot water supply pipe, it is possible to reliably prevent the low temperature water from flowing out.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a hot water storage pot used in a hot water supply device of the present invention.

FIG. 2 is a schematic view showing a hot water supply device of the present invention.

FIG. 3 is a schematic configuration diagram showing a conventional hot water supply device.

[Explanation of symbols]

 11 Main Heat Source Machine 13 Hot Water Supply Pipe 14 Hot Water Supply Faucet 16 Hot Water Storage Pot 18 Hot Water Supply Pipe 19 Hot Water Supply Pipe 21 Baffle Plate 22 Side Hot Water Pipe 23 Hot Water Supply Side Pipe

Claims (1)

[Scope of utility model registration request] 1. A hot water supply apparatus having a hot water storage pot provided with a heater for maintaining heat between a main heat source machine and a hot water outlet faucet, wherein the hot water storage pot is provided with a baffle plate below the inside thereof in correspondence with a hot water inlet pipe. At the same time, a side hot water pipe is provided in parallel with the hot water inlet pipe at a position corresponding to the baffle plate, and a hot water supply side pipe is provided outside the hot water storage pot between the side hot water pipe and the hot water discharge pipe provided at the upper part of the hot water storage pot. A hot water supply device characterized by being connected by piping.