JPH06147639A - Hot-water supplier - Google Patents

Abstract

PURPOSE:To obtain hot-water of a predetermined temperature with the maximum hot-water supplying capacity with a simple constitution in either winter or summer having different inlet water temperatures, in a hot-water supplier for supplying a kitchen, a bathroom and the like with hot-water. CONSTITUTION:A water flow rate choking valve 3, having a water passage 14 opened and/or closed by a valve 13, retained by a shape-memory alloy spring 16 and an auxiliary spring 17 and operated at a predetermined temperature, and a water passage 15, opened at all times, is arranged in the water supplying passage 2 for a heat exchanger. According to this method, the spring 16 is expanded and opens the valve 13 to increase the amount of delivered hot-water when the inlet water temperature is high such as in summer while the spring 16 is contracted and the valve 13 is closed whereby the discharging amount of hot-water is reduced when the inlet water temperature is low such as in winter and the like.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, the maximum capacity of a household water heater has been set so that hot water of a predetermined temperature can be obtained with a predetermined amount of hot water even when the water temperature in winter is low, and when the water temperature is high such as in summer. Although it is necessary to obtain a larger amount of hot water than in the winter, the amount of hot water is adjusted according to the winter, and there is the problem that the maximum amount of hot water that can be obtained according to the incoming water temperature cannot be obtained. There is a control means that uses a water temperature detector arranged in a water supply circuit of the exchanger to control a water amount proportional valve by a signal corresponding to the water temperature to change the hot water supply amount with the water temperature. In addition,
There is also one using a wax thermo-applied product as a water amount proportional valve (for example, refer to JP-A-1-16753).

[0003]

However, the above-mentioned conventional structure has a problem that the control means having a complicated structure is required and the cost becomes high.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a water heater having a simple structure and capable of obtaining hot water of a predetermined temperature with a maximum water heating capacity even in winter and summer when the water temperature is different. To do.

[0005]

In order to achieve this object, the water heater of the present invention is held by a water passage that is always open, a shape memory alloy spring and an auxiliary spring, and is operated at a predetermined temperature. The water amount throttle valve having a water passage opened and closed by the valve is arranged in the water supply passage of the heat exchanger.

[0006]

In this structure, when the water inlet temperature is high such as in summer, the shape memory alloy spring expands to open the valve to increase the amount of tap water, and when the water inlet temperature is low such as in winter, the shape memory alloy spring is used. Will shrink and close the valve to reduce the amount of tap water.

[0007]

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

As shown in FIG. 1, in the water supply passage 2 on the inlet side of the heat exchanger 1, a water amount throttle valve 3, a water governor 4 for controlling a constant water amount even if the water pressure fluctuates, and a water supply amount are counted. A water amount sensor 5 and a water temperature detector 6 are provided.

A hot water temperature detector 8 and a hot water overheat preventive device 9 are provided in the hot water supply passage 7 from the outlet side of the heat exchanger 1. In the figure, 10 is a burner for heating the heat exchanger 1, 11 is a controller operated by the remote controller 12, arrow A indicates the direction of water supply to the water supply passage 2, and arrow B indicates hot water supply from the hot water supply passage 7. Shows the direction.

As shown in FIG. 2, the water amount throttle valve 3 has a water passage 14 which is closed by a valve 13 at a central portion and a water passage 15 which is always open outside (inner peripheral portion of the water amount throttle valve 3). And a valve 13 is provided at the front and rear and is made of a shape memory alloy spring 1
6 and an auxiliary spring 17. The shape memory alloy spring 16 contracts when the water temperature is low, such as in winter.
3 blocks the water passage 14, and when the water temperature is high such as in summer, the valve 3 is extended to open the water passage 14 by separating the valve 13. The outer water passage 15 has a water passage area with an appropriate amount of water according to the temperature of the water in winter, and the total value of the water passage areas of the central water passage 14 and the outer water passage 15 is:
It is set to have an appropriate amount of water according to the temperature of incoming water in summer.

The hot water supply output generally used for home use is 3
As can be seen from Fig. 3 which shows the relationship between the hot water supply amount of the water heater and the hot water output temperature at 10,000 kcal / hour, in order to achieve the 42 ° C hot water output during normal use, the hot water output should be changed when the water input temperature is 5 ° C. 13 liters / minute, and when the incoming water temperature is 15 ° C, the hot water output is 18
It would be good to set it to liters / minute.

In the water heater having the hot water supply output of 30,000 kcal / hour constructed as in the above-mentioned embodiment, when the incoming water temperature is 15 ° C. or less, the water passage 14 is closed by the valve 13 and the hot water output is about 13. The characteristics of the spring 16 made of a shape memory alloy and the center of the spring 16 are adjusted so that the valve 13 extends to open the water passage 14 and the amount of hot water discharged is about 18 liters / minute when the inlet water temperature is higher than 15 ° C. By setting the water passage areas of the partial water passage 14 and the outer water passage 15, the hot water outlet temperature of 42 ° C. during normal use can be secured with the maximum hot water supply capacity.

In normal use as a water heater, the remote controller 12 sets an arbitrary hot water temperature so that the controller 11 outputs signals from the incoming water temperature detector 6, the water amount sensor 5, and the hot water temperature detector 8. By receiving and controlling the burner 10 on / off or proportionally, hot water of a predetermined temperature can be supplied.

[0014]

As is apparent from the above description, the present invention is opened and closed by a water passage that is always open and a valve that is held by a spring made of a shape memory alloy and an auxiliary spring and that is operated at a predetermined temperature. An excellent hot water supply that can obtain hot water of a specified temperature with the maximum hot water supply capacity even in winter and summer when the water entry temperature differs with a simple structure by arranging a water flow restrictor valve with a water passage Machine can be realized.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the concept of a water heater according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a water amount throttle valve of the water heater.

FIG. 3 is a graph showing the relationship between the hot water supply amount of the hot water supply device and the hot water supply temperature when the maximum hot water supply output is 30,000 kcal / hour.

[Explanation of symbols]

 1 Heat Exchanger 2 Water Supply Channel 3 Water Flow Restrictor 4 Water Governor 5 Water Quantity Sensor 6 Water Temperature Detector 7 Hot Water Supply Channel 8 Hot Water Temperature Detector 13 Valve 14 Water Channel 15 Water Channel 16 Spring 17 Auxiliary Spring

Claims (1)

[Claims] 1. A heat exchanger provided with a heat exchanger, a water amount throttle valve, a water amount sensor for counting a water supply amount, a water governor for controlling a constant water amount even if the water pressure fluctuates, and an incoming water temperature detector. A water heater having a water supply passage to the exchanger and a hot water supply passage from the heat exchanger in which a hot water temperature detector is arranged, wherein the water flow restrictor is a water passage that is always open and a shape memory alloy. Water heater having a water passage that is opened and closed by a valve that is held by a spring and an auxiliary spring and is operated at a predetermined temperature.