JP2001046228A - Hot water apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water apparatus wherein in the case of feeding a small amount of hot water, wherein water is not supplied by a person, a waiting time can be reduced, and a maximum amount of stored hot water can be suppressed to that heat insulating power can be reduced. SOLUTION: The hot water apparatus includes a hot water storage vessel 14 for storing hot water, a flow-in pipe 5, one of the ends thereof is connected to a city water pipe, the other end being disposed at the bottom of the vessel 14, heating means 6, 12 for heating water, a first temperature sensing means 7 for detecting temperature of the vessel 14, a flow-out pipe 11 which is disposed on a side of the vessel 14 to convey hot water to a delivery part, and an opening 13 formed on the top of the vessel 14 to vent steam. Further, the pipe 5 has a flow rate adjusting means 3 to adjust the flow rate and a flow rate sensing means 4 to detect the flow rate, and the pipe 11 is connected to a pump 9 and has a second temperature sensing means 10 to sense the temperature of hot water delivered and a control means 16 to control the means 3, heating means 6, 12, and pump 9. The means 16 allows hot water to be delivered until the hot water, the amount of which is larger than a first predetermined amount, is heated to a predetermined temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater for supplying hot water used at home or office.

[0002]

2. Description of the Related Art Conventionally, there is a jar pot as household equipment for storing hot water by raising the temperature of the hot water to a certain temperature using electricity.

[0003]

However, the conventional jar pot can be used without waiting time until the stored hot water runs out, but when the jar is used up, a person stores water and waits until it is heated to the set temperature. In addition, there has been a problem that the amount of hot water storage has been increasing in recent years and the heat retention power is large.

[0004]

SUMMARY OF THE INVENTION The present invention solves the problems of such a conventional structure, and includes a hot water storage container for storing hot water, one connected to a water pipe and the other being the hot water storage. Inflow pipe provided at the bottom of the container, heating means for heating water, first temperature detecting means for detecting the temperature of the hot water storage container, and hot water provided on the side of the hot water storage container to the discharge section An outlet for removing steam provided at the upper part of the hot water storage container, and the inflow pipe has a flow rate adjusting means for adjusting a flow rate and a flow rate detecting means for detecting a flow rate. The pipe has a second temperature detecting means connected to the pump and detecting the temperature of the hot water, and has control means for controlling the flow rate adjusting means, the heating means and the pump,
The control means is a water heater that does not supply hot water until a first predetermined amount or more of water reaches a predetermined temperature, and heats the water while automatically supplying water by directly connecting with a water supply to gradually store hot water at a predetermined temperature. With this configuration, it is possible to provide a water heater that has a short waiting time for a small amount of hot water that does not require human water supply, and that has a low maximum heat storage amount and low heat-retention power.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a hot water storage container for storing hot water, an inflow pipe connected to a water pipe on one side and provided on a bottom of the hot water storage vessel, and heats water. Heating means, first temperature detecting means for detecting the temperature of the hot water storage vessel, an outflow pipe for transferring hot water provided on a side surface of the hot water storage vessel to a discharge portion, and steam provided at an upper portion of the hot water storage vessel And an inflow pipe, wherein the inflow pipe has a flow rate adjustment means for adjusting a flow rate and a flow rate detection means for detecting a flow rate, and the outflow pipe is connected to a pump and detects a tapping temperature. And a control means for controlling the flow rate adjusting means, the heating means, and the pump. The control means serves as a water heater that does not allow hot water of a first predetermined amount or more to reach a predetermined temperature. Hot water below a certain temperature is not discharged. Hot water temperature is obtained, latency less of if the water supply is unnecessary small amount of the hot water by human, also it is possible to provide a heat insulating power suppressing the maximum amount of hot water storage is small water heater.

According to a second aspect of the present invention, there is provided a water heater in which the control means supplies hot water that has not reached the predetermined temperature, so that hot water having a temperature lower than the predetermined temperature is not discharged and hot water having a predetermined temperature is obtained.

[0007] According to a third aspect of the present invention, the control means includes:
The water heater can start the heating of the water by the first heating means after the predetermined amount or more of water is stored, thereby preventing local boiling near the first heating means.

According to a fourth aspect of the present invention, the control means adjusts the flow rate by adjusting the flow rate according to the temperature of the inflowing water. The water heater is squeezed to reduce the amount of water to be heated per unit time, and when the water temperature is high, the flow rate is increased to increase the amount of water to obtain hot water at a predetermined temperature.

According to a fifth aspect of the present invention, the control means includes:
Until the predetermined amount of hot water is stored, the hot water is kept warm by the second heating means, and when the third predetermined amount of hot water is stored, the supply of water is stopped and the hot water is kept warm by the first or second heating means. When the temperature of the hot water in the upper layer drops during the water supply, the water is heated by the second heating means to obtain hot water of a predetermined temperature, and when the water supply is completed, the hot water from the bottom is heated by the first or second heating means and heated to the predetermined temperature. The water heater is used to supply hot water.

According to a sixth aspect of the present invention, there is provided a drainage means connected to the control means at the bottom, and the control means drains or drains the water before starting the operation so that the water or hot water which has not been used for a long time is removed. It is a sanitary water heater that is not used.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) A first embodiment will be described with reference to FIG. Reference numeral 1 denotes a water pipe that is piped in the home and through which tap water flows. Reference numeral 2 denotes a water pipe connected to the water pipe 1, the path of which has a flow rate adjusting means 3 and a flow rate detecting means 4,
It is connected to the bottom of hot water storage container 14 via inflow pipe 5. The flow rate adjusting means 3 is composed of a proportional control valve for adjusting the degree of opening of the flow path. The flow rate detection means 4 includes a water wheel whose rotation speed changes according to the flow rate, a Hall element for detecting a magnet attached to the water wheel, and the like. Reference numeral 6 denotes first heating means provided at the bottom of the hot water storage container 14, which is constituted by a heater or the like. Reference numeral 7 denotes a first temperature detecting means provided at the bottom of the hot water storage container and is constituted by a thermistor or the like. Reference numeral 12 denotes a second heating means provided around the side surface of the hot water storage container 14 below the outflow pipe 11, and is constituted by a heater or the like. The outflow pipe 11 has the second temperature detecting means 10 and the pump 9 and is connected to the hot water discharge section 8. The second temperature detecting means 10 is composed of a thermistor or the like. Reference numeral 13 denotes an opening for removing steam provided at the upper part of the hot water storage container 14. The flow rate detecting means 4, the first temperature detecting means 7, and the second temperature detecting means are connected to the control means 16 via the input means 15. The flow control means 3, the first heating means 6, the second heating means 12, and the pump are connected to the control means 16 via the output means 17.

The operation will be described with the above configuration. The tap water supplied from the water pipe 1 passes through the water pipe 2 to decrease the flow rate when the water temperature is lower than a predetermined power temperature and the heating power and the predetermined temperature, and increases when the water temperature is high. When the water gradually flows into the hot water storage container 14 and a second predetermined amount or more of water determined by the water temperature at which local boiling does not occur even when the heating of the first heating means 6 is started and the supplied power density or the like flows, the first Heating is started by the heating means 6 and hot water of a predetermined temperature equal to or higher than the hot water outlet of the quantity outflow pipe 11, which is the first predetermined amount, is discharged.

If the temperature of the hot water to be used is low, the tapping is prohibited, the hot water is reheated by the second heating means 12 and the temperature is raised to a predetermined temperature, thereby enabling the tapping.

Further, when a third predetermined amount of hot water, which is a maximum amount suitable for daily use and is not troubled for one-time use, is stored, the supply of water is stopped and the temperature of the hot water at the bottom is reduced to a predetermined temperature. If the temperature is lower, the first heating means 6 reheats the hot water, and if the temperature of the hot water in the outlet section 11 is low, the second heating means 12 reheats the hot water to keep the hot water at a predetermined temperature.

Further, when the amount of hot water increases, the hot water level exceeds the discharge portion, so that hot water is discharged regardless of the presence or absence of the pump operation, and the hot water does not overflow from the opening 13 of the hot water storage container 14. In order to use hot water, it is sufficient to pump it out with the pump 9, but since the level of the hot water in the outflow pipe 11 is higher than the first heating means and the second heating means, there is no need for empty heating.

When the amount of hot water becomes less than the third predetermined amount, water supply is started, heated, and gradually stored to the third predetermined amount. A sufficient amount of hot water is stored in a third predetermined amount of water after a sufficient interval from one use. If a small amount is sufficient, hot water of a predetermined temperature is stored while heating or keeping the temperature, so that hot water of a predetermined temperature can be used even during storage. Therefore, convenience is good.

(Embodiment 2) Embodiment 2 will be described with reference to FIG. Components having the same configuration as in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 18 denotes a drainage means which is connected to the inflow pipe 5 provided at the bottom of the hot water storage container 14 and drains water or hot water to a drainage pipe 19, and is constituted by an electromagnetic valve or the like. The drainage means 18 is connected to the control means 16 via the output means 17.

In the above configuration, the control means 16 opens the drainage means 16 for a predetermined time before starting the operation to drain the water or hot water remaining in the hot water storage container 14, the outflow pipe 11, the inflow pipe 5 and the like. Therefore, only fresh tap water flows into the hot water storage container 14 at the start of operation, which is sanitary.

[0021]

According to the first aspect of the present invention, hot water having a temperature lower than a predetermined temperature is not supplied, and hot water at a predetermined temperature can be obtained. It is possible to realize a water heater that suppresses the maximum hot water storage amount and has a small heat retaining power.

According to the second aspect of the present invention, it is possible to realize a water heater in which hot water having a predetermined temperature is obtained without discharging hot water having a temperature lower than a predetermined temperature.

According to the third aspect of the present invention, a water heater capable of preventing local boiling near the first heating means can be realized.

According to the fourth aspect of the present invention, a water heater is provided in which the flow rate is reduced to reduce the amount of water to be heated per unit time, and when the water temperature is high, the flow rate is increased by increasing the flow rate to obtain a predetermined temperature. be able to.

According to the fifth aspect of the present invention, when the temperature of the upper layer water drops during the supply of water, the water is heated by the second heating means to obtain a predetermined temperature of water. When the supply of water is completed, the water from the bottom is removed. 1
Alternatively, a water heater that can be heated by the second heating means to obtain hot water at a predetermined temperature can be realized.

According to the invention described in claim 6, a sanitary water heater that does not use water or hot water that has not been used for a long time can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a water heater according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a water heater according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water pipe 2 Water pipe 3 Flow rate adjustment means 4 Flow rate detection means 5 Inflow pipe 6 First heating means 7 First temperature detection means 8 Discharge part 9 Pump 10 Second temperature detection means 11 Outflow part 12 Second heating means DESCRIPTION OF SYMBOLS 13 Opening 14 Hot water storage container 15 Input means 16 Control means 17 Output means 18 Drainage means 19 Drain pipe

Claims (6)

[Claims] 1. A hot water storage container for storing hot water, an inflow pipe connected to a water pipe on one side and an inflow pipe provided at a bottom of the hot water storage vessel, heating means for heating water, and a temperature of the hot water storage vessel. A first temperature detecting means for detecting, a discharge pipe provided on a side surface of the hot water storage container for transferring hot water to a discharge portion, and an opening provided at an upper portion of the hot water storage container for discharging steam, The inflow pipe has a flow rate adjusting means for adjusting a flow rate and a flow rate detection means for detecting a flow rate, and the outflow pipe has a second temperature detection means connected to a pump and for detecting tap water temperature, A water heater having a control means for controlling an adjusting means, a heating means and a pump, wherein the control means does not discharge hot water of a first predetermined amount or more until a predetermined temperature is reached. 2. The water heater according to claim 1, wherein the control unit supplies the hot water while leaving the hot water not reaching the predetermined temperature. 3. The water heater according to claim 1, wherein the control means starts heating the water by the heating means after the second predetermined amount or more of the water is stored. 4. The water heater according to claim 1, wherein the control means adjusts the flow rate according to the temperature of the flowing water. 5. The control means keeps the temperature of the hot water by the heating means until the third predetermined amount of the hot water is stored, stops the supply of the hot water when the third predetermined amount of the hot water is stored, and keeps the hot water by the heating means. The water heater according to claim 1, wherein 6. The water heater according to claim 1, further comprising a drainage unit connected to the control unit at the bottom, wherein the control unit drains or drains the water before starting operation.