JPH094756A - Temperature-sensitive valve - Google Patents

Abstract

PURPOSE: To provide a temperature-sensitive valve to forcibly heat-exchange between heating fluid and fluid to be heated and circulate the fluids and heat the fluid to be heated to a desired temperature in a short time. CONSTITUTION: A valve seat 7 is attached to a body 1 to form a valve port 8. A rod-form valve element 9 is arranged facing the valve port 8. A temperature responding element 6 is arranged at the upper part of the valve element 9. An injector 4 is attached to the upper part of the valve seat 7. The injector 4 comprises a nozzle part 10, a feed water port 11, and a supply water port 12. The nozzle part 10 is connected to the valve port 8 through a communication passage 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects the temperature of a fluid to be heated around a temperature responsive element, opens and closes a valve element to stop the supply of the fluid to be heated so that the temperature of the fluid to be heated falls within a predetermined temperature range. Regarding the temperature sensitive valve to maintain.

[0002]

2. Description of the Related Art As a conventional temperature sensing valve, for example, an actual Kaihei 1
There is one disclosed in Japanese Patent Publication No.-80886. This forms a heat-sensitive chamber through which the fluid to be heated flows, and in addition to disposing a proportional heat-sensing body such as a bimetal that expands and deforms substantially proportionally in response to a temperature rise of the fluid to be heated inside the heat-sensitive chamber, A rapid change thermosensitive element made of shape memory alloy that expands when the fluid to be heated rises to a predetermined temperature and forcibly moves the valve toward the valve closing side. The sudden temperature-sensitive element made of a memory alloy and the large temperature deformation force prevent valve leakage.

[0003]

The above-mentioned conventional device has a problem that it takes time until the temperature of the fluid to be heated reaches a predetermined value. Particularly, when the fluid to be heated is stored in a large tank or the like, there is a problem that it takes a long time. This is because the heating fluid is only supplied into the heating target fluid, and the mixing of the heating target fluid and the heating fluid, that is, heat exchange cannot be promoted, or the circulation of the heating target fluid cannot be promoted.

Therefore, a technical object of the present invention is to provide a temperature-sensitive valve capable of promoting heat exchange and circulation between fluids and shortening the time until the heated fluid reaches a predetermined value. Is to get.

[0005]

The structure of the temperature sensitive valve of the present invention is as follows. An inlet and a valve chamber that connect to a heating fluid source are formed in the valve casing, a valve seat that separates the valve chamber and the inlet is formed, and a valve element is arranged facing the valve port provided in the valve seat. A temperature responsive element that responds to the temperature of the fluid to be heated is arranged in the valve chamber by connecting it to the valve body, and an injector is disposed on the fluid to be heated side of the valve seat, and the nozzle of the injector is valved. In addition to communicating with the mouth, the water supply port and the water supply port of the injector are opened to the heated fluid side.

[0006]

The temperature responsive element responds to the temperature of the fluid to be heated to open and close the valve port, whereby the supply of the heating fluid into the fluid to be heated is stopped. By communicating the nozzle portion of the injector with the valve opening, the heating fluid supplied by opening the valve opening reaches the nozzle portion. By opening the water supply port and water supply port of the injector to the heated fluid side, the heated fluid reaching the nozzle part sucks the heated fluid from the water supply port and performs forced mixing, that is, heat exchange, from the water supply port. Water is fed into the fluid to be heated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described in detail. A valve casing is formed by the main body 1 and the lid 2, an inlet 3 and an injector 4 are provided in the main body 1, a valve chamber 5 is formed in the lid 2, and a temperature responsive element 6 is arranged to form a temperature sensitive valve. To do. Entrance 3 of body 1
The side is connected to a heating fluid source such as steam (not shown) as the flat flange 30, and the upper surface side of the flat flange 30 is immersed in the heated fluid to maintain the temperature of the heated fluid at a desired value.

The inlet 3 is formed at the lower end of a valve opening 8 penetrating through the center of a valve seat 7 screwed to the main body 1, and a rod-shaped valve body 9 is arranged facing the valve opening 8. The lower end of the valve body 9 opens and closes the upper end of the valve opening 8 and is shown in a closed state in FIG. The injector 4 is attached to the main body 1 on the heated fluid side of the valve seat 7. The injector 4 includes a nozzle portion 10 and a water supply port 1.
1 and the water supply port 12. Nozzle part 10 to communication path 1
It communicates with the valve opening 8 through 3. Water supply port 11 is water supply pipe 1
The water supply port 12 is connected to 4, 5 and 15 to communicate with an arbitrary place in the heated fluid, and the water supply port 12 is also opened in the heated fluid. In the injector 4, the heating fluid from the valve opening 8 flows down through the nozzle portion 10 at a high speed, sucks the heating fluid from the water supply opening 11, mixes, that is, heat-exchanges, and supplies the heating fluid from the water supply opening 12 into the heating fluid. It is a thing.

The upper end of the rod-shaped valve body 9 penetrates the inner wall 31 of the main body and is connected to the temperature responsive element 6 via the spring receiving member 16 and the coil springs 17 and 18. In the present embodiment, an example using thermo wax as the temperature responsive element 6 is shown. That is, the thermal expansion wax is sealed inside and the drive shaft 19 at the end portion expands and contracts according to the ambient temperature.

A communication passage 20 is formed in the lid 2 and a communication passage 21 is formed in the spring receiving member 16 so that the temperature responsive element 6 can be formed.
Make it easy for the fluid to be heated to contact the surroundings. The drive shaft 19 of the temperature responsive element 6 is housed in the adjusting screw 23, and the opening / closing valve temperature of the valve body 9 can be adjusted according to the rotational displacement of the adjusting screw 23.

Next, the operation will be described. When the temperature of the fluid to be heated in the temperature responsive element 6 is lower than a predetermined value, the thermal expansion wax inside the temperature responsive element 6 contracts, the drive shaft 19 also contracts, and the connected valve body 9 is displaced upward. The valve port 8 of the inlet 3 is opened to supply a heating fluid such as steam to the nozzle portion 10 of the injector 4 from the communication passage 13. The steam flowing down the nozzle portion 10 sucks the heated fluid from the water supply port 11, mixes and heat-exchanges it, and reaches the heated stream from the water supply port 12 to raise the temperature of the heated fluid. In this case, the fluid to be heated is sucked from any location in the fluid to be heated via the water supply pipes 14 and 15 and mixed with the heating fluid, whereby heat exchange between the fluid to be heated and the fluid to be heated is promoted and Circulation is also promoted, and the entire temperature of the fluid to be heated rapidly rises uniformly.

As the temperature of the fluid to be heated rises, the drive shaft 19 of the temperature responsive element 6 also expands and the valve body 9 gradually displaces downward, and when the temperature reaches a predetermined temperature, the valve body 9 as shown in FIG. 9
Closes the valve opening 8 to stop the supply of heating fluid, that is, steam.

In this embodiment, one injector 4 is provided, but two or more injectors 4 may be attached to the main body 1. Further, in this embodiment, the water supply port 11 of the injector 4 has a straight water supply pipe 14,
Although an example in which the water supply pipe 15 is attached is shown, the water supply pipes 14 and 15 may be pipes that can be changed into arbitrary shapes such as flexible tubes.

[0014]

By the suction and mixing action of the injector,
It is possible to obtain a temperature sensitive valve that can forcibly circulate and exchange heat between the heated fluid and the heated fluid and can bring the heated fluid to a predetermined temperature in a short time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a temperature sensitive valve of the present invention.

[Explanation of symbols]

 1 Main Body 2 Lid 3 Inlet 4 Injector 5 Valve Chamber 6 Temperature Response Element 7 Valve Seat 8 Valve Port 9 Valve Disc 10 Nozzle Part 11 Water Supply Port 12 Water Supply Port 19 Drive Shaft 30 Flat Flange

Claims (1)

[Claims] 1. A valve casing having an inlet and a valve chamber connected to a heating fluid source, a valve seat defining the valve chamber and the inlet, and facing a valve port provided in the valve seat. In a case where a valve element is arranged and a temperature responsive element that responds to the temperature of the fluid to be heated is connected to the valve element and disposed in the valve chamber, the injector is disposed on the fluid side to be heated of the valve seat, and the injector A temperature-sensitive valve characterized in that the nozzle portion of is connected to the valve port, and the water supply port and the water supply port of the injector are opened to the heated fluid side.