KR20020001671A - Freeze Water Meter - Google Patents

Abstract

PURPOSE: A freezing preventive water meter is provided to install simply by mounting in a water meter, to use conveniently and continuously without failure by opening and closing automatically according to external temperature. CONSTITUTION: A first spring(9) is inserted to a mandrel(10), and the mandrel is fitted to a second spring(11). An opening hole is integrally combined with the mandrel, and the mandrel and the opening hole are moved with the pressure difference between first and second springs. A water pipe is combined with a body(b), and the first spring is made of shape memory alloy changing repulsive force below 2 deg.C. A drain port is opened with pushing the opening hole below 2 deg.C. The second spring, the mandrel and the first spring are fitted with opening an opening screw(8), and water is streamed to the body through water pipes. The first spring is strengthened, and the drain port is closed with the second spring, the mandrel and the opening hole at normal temperature. The first spring is compressed, and the second spring, the mandrel and the opening hole are lifted up about 2 deg.C. Therefore, freezing is prevented with draining water from the water meter.

Description

Freezing water meter {omitted}

As our country is located in the mid-northern part of the climate, the water meter caused by the cold weather in winter is frequent. We are wasting our precious drinking water because of the breakage of water meters due to freezing. However, studies on freezing prevention are lacking.

Winter water temperature in our country is maintained at 5 ℃ ~ 8 ℃. This is the temperature of the tap water during the day, and when the tap water is not used at night, water accumulates in the water meter and starts to freeze. The shape memory alloy of the present invention plays a role of water drain in the image 1 ℃ ~ 2 ℃, while in the image 2 ℃ ~ 3 ℃ serves to block water.

Locking the number 1 raw water control device in Figure 2 can obtain a freeze protection effect of more than 90%. Freeze protection is further ensured if warm water flows back in the indoor drainage pipe of FIG. 2.

The present invention solves the problems of the conventional water meter freeze protection mechanism or apparatus such as water meter freeze protection mechanism of the structure that can open and close the raw water inlet automatically according to the temperature by the mechanism simply attached on the water meter. To present.

1 is an external view of the present invention

2 is a block diagram of the present invention

3 is a winter operation state diagram

Figure 4 is a state of normal operation

※ Explanation of main code

1. Raw water control valve 2. Raw water inlet pipe 3. Water meter

4. Tap water counter 5. Freeze blocker 6. Water outlet

6-1. Water duct 7. Water duct 8. Opening screw

9. First spring 10. Mandrel and opening

11. 2nd spring 12. Elb 13. Sand layer

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is for illustrating the basic configuration of the present invention, Figure 2 shows a combined state of the present invention, the present invention is a first spring (9), the second spring 11 in the upper and lower end portions of the mandrel (10) ) And the opening and closing hole 10 are sequentially inserted and fixedly coupled to the mandrel, and the flow of the mandrel and the opening and closing hole coupled thereto by the pressure difference between the first spring and the second spring, respectively. The through hole (6) (6-1) penetrating up and down of the structure acts to drain. The water draining ball serves to continuously discharge the water in the main body and the upper water pipe when opened with a minute hole of about 1 mm.

In the present invention, the first spring and the second spring is determined in the normal state, that is, the spring force is determined to maintain the state opening the inlet opening by pushing the opening and closing hole at 2 ℃ or more, any one of which is the spring of the shape memory alloy material It is characterized by the configuration that the change of the spring force according to the temperature to use so that the action direction of the spring force is reversed.

The shape memory alloy spring is formed by increasing or decreasing the elastic modulus at the image 2 ℃ or less, and when using the shape memory alloy spring processed to increase the elastic modulus at the image 2 ℃ or less the shape of the first spring In case of using memory alloy and shape memory alloy spring processed to reduce elastic modulus below 2 ℃, the spring force decreases when the outside temperature drops to 2 ℃ by using the second spring as shape memory alloy. Open the drain and drainage begins.

That is, one spring is a general spring and the modulus of elasticity is almost unchanged according to the temperature change, but the shape memory alloy spring is manufactured to change or increase the modulus of elasticity at a specific temperature, for example, 2 ° C or below, so that the outside air temperature is 2 ° C or below. When it is reduced to, the drainage port is opened by the spring force acting in the direction opposite the drainage port.

3 and 4 are for explaining the specific operating state of the present invention to maintain a balanced state at 2 ℃ or more and to use a shape memory spring molded to increase the modulus of elasticity below 2 ℃ as a first spring, When the two springs are applied to the present invention using a general spring, Figure 3 shows the operating state of the valve structure when the outside air temperature drops below 2 ° C or opens the valve of the meta machine at 2 ° C or below. 4 shows the operating state of the structure when the outside temperature is maintained at 2 ℃ or more.

3, when the outside air temperature drops below 2 ° C., the first spring is constant with little change in the spring force, and the second spring is increased in response to the outside temperature, thereby increasing the spring force so that the first spring is compressed and the second spring is The drainage port is opened by pushing the general spring upward by extending the mandrel 9 as an axis.

In the above-described force, the pressure difference between the opening and closing hole is balanced between the pressure difference between the first spring and the second spring and the water pressure of the meta pipe.

Figure 4 shows the outside temperature is more than 2 ℃ or the water meter is open, the spring force of the first spring using a general spring is configured to be larger than the second spring force, when the outside temperature is 2 ℃ or more the inlet is always open By maintaining the state to close the water draining ball is the outflow of water by the water draining ball is blocked and the water received into the inlet flows through the water through the water without restriction.

Each of the above embodiments is the same when using a shape memory spring designed to increase the modulus of elasticity when the outside temperature is less than 2 ° C. or when using a shape memory spring designed to reduce the modulus of elasticity when the outside temperature is below 2 ° C., In this case, the same function can be performed by using the shape memory spring for the first spring, and the general spring for the second spring.

The present invention is installed by simply attaching to the water meter, the opening and closing is made automatically according to the outside temperature is very easy to use, there is an effect that can be used continuously without failure.

Claims (1)

Prevents freezing of water meters by incorporating shape memory alloy into water meters It also refers to the importance of fluidity, that is, shape memory alloy spring movement, in the image 1 ~ 2 ℃ (water drainage device to prevent freezing).