JPS58184371A - Fixed heat capacity valve - Google Patents

Abstract

PURPOSE:To allow a fixed quantity of fluid to flow out irrespective of the fluid pressure, and to adjust the flow quantity in proportion to the fluid temperature. CONSTITUTION:A fluid flowing in through a fluid inlet port 2 flows into an intermediate chamber 32 as the primary pressure fluid from a circular chamber 30 through an end chamber 33 and passage 34 to affect a movable bulkhead 8. Since the fluid in the end chamber 33 flows into an outlet side chamber 31 through the inside of a valve port 6 and the periphery of a heat sensitive expansion element 24, the pressure of the outlet side chamber 31 affects the movable bulkhead 8. Therefore, even if the pressure of the circular chamber 30 and outlet side chamber 31 is changed, the pressure difference between the front and rear of a flow quantity adjusting valve 21 is constant, thereby a fixed quantity of fluid flows out. In addition, when the temperature of the fluid around the heat sensitive expansion element 24 is elevated, the opening area of the adjusting valve body 21 is expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, even if the pressure of the inflowing fluid changes, the outflow amount does not change, and as the fluid temperature decreases, the outflow amount automatically decreases and the fluid temperature increases. This invention relates to an electrothermal capacity valve that automatically increases the amount of outflow according to the amount of water. 'A water heater such as an instantaneous water heater,
Connect the water supply (tap/guia °
), the temperature of the water supplied to the water heater changes between summer and winter, resulting in fluctuations in the temperature of the water discharged from the water heater. In addition, the amount of water discharged from the water heater changes due to changes in the pressure of the water supply source, resulting in fluctuations in the temperature of the discharged water.Furthermore, when adjusting the opening of the door connected to the water heater, the flow rate of the water heater also changes. As the temperature changes, the temperature of the discharged hot water may fluctuate, which is an inconvenience.

The object of the present invention is to provide an electrothermal capacity valve that advantageously solves the above-mentioned problems.

Next, the present invention will be explained in detail using illustrated examples.

FIG. 1 shows a first embodiment of the present invention, in which a first valve body body 9 is provided with a fluid outlet 6 at one end, a fluid outlet 2 is provided at the other end of the main body 9, and a fluid outlet 2 is provided at the intermediate portion. Second valve box body 10
The ends of the two are mated and connected by a bolt connection or other suitable means.

An O-ring 12 is provided between the other end of the second valve box main body 10 and a lid member 11 screwed and fixed thereto, and inside the second valve box main body 10, a fluid valve 2 and a lid are provided. An annular valve seat 4 is integrally provided between the valve body 11 and the valve body 1. The first valve body body 9, the second valve body body 10, and the lid member 11 constitute the valve body 1.

A middle portion of a valve port 6 having a circular cylindrical cross section and having a valve ring 5 at one end facing the annular valve seat 4 has a fluid population 2.
The O-ring 13 is slidably fitted into the second valve body main body 10 between the valve port 6 and the fluid outlet 6, and an O-ring 13 is fitted into an annular groove provided on the outer peripheral surface of the fitting portion of the valve port 6.
Further, a support member 15 having a fluid passage hole 14 is screwed and fixed to the other end of the valve port 6, and the hole edge of the movable partition wall 8 made of an annular rubber dial ram is in contact with the flange of the support member 15. The hole edge of the movable partition 8 is connected to the support part +A via the partition wall tightening fitting 16 which is screwed onto the support member 15 and the ring valve plate 18.
15 is tightened and fixed.

Further, the outer peripheral edge of the movable partition wall 8 is clamped and held by the first valve body body 9 and the second valve body body 10, and is supported by an annular pressure regulating member 19 screwed onto one end of the valve body 1. A pressure regulating spring 7 that presses the valve port 6 in the valve opening direction is provided between the member 15 and the valve port 6.
is mediated.

A frusto-conical valve hole 20 is formed inside the valve port 6, and an adjusting valve body 21 facing the valve hole 20 and an annular spring receiver fixed to one end of the valve port 6 by caulking are provided. An opening reduction spring 23 that presses the regulating valve body 21 in the opening reduction direction is interposed between the metal fitting 22 and the small diameter portion of the casing 25 of the temperature-sensitive elastic element 24 at the center of the support member. The protruding end of the movable silane gloss 26 of the temperature-sensitive elastic element 24 is fitted and locked to the regulating valve body 21, and the large diameter portion of the goo song 250, the large diameter portion of the 11° stopper 27, and the silane gloss 26 are fitted into each other. O fitted to
The ring 28 is fitted into a protective cover 29, and the small diameter end of the stopper 27 is secured to the support member 15.

A temperature detection flow rate adjustment valve is constituted by the adjustment valve body 21 which is engaged with the valve hole 20 and the temperature-sensitive elastic element 24, and the opening reduction spring 23, and the fitting portion at the valve port 6 and the valve ring 5 are connected to each other. An annular chamber 30 communicating with the fluid population 2 is formed between the small-diameter shaft portion in between and the inner wall surface of the second valve body body 10, and an outlet side chamber 31 and an intermediate chamber 62 are defined by the movable partition wall 8. , the intermediate chamber 62 and the end chamber 66 of the valve body 1 are connected by a flow path 64.

The temperature-sensitive elastic element 24 may be, for example, a comb sleeve whose opening periphery is fixed to the casing, wax filled in a sealed chamber between the casing and the rubber sleeve, and a comb sleeve fitted into the rubber sleeve. A known wax-type temperature-sensitive expandable element consisting of a silanger is used.

Next, the operation of the constant capacity valve of the first embodiment will be explained.

When a fluid such as water is not flowing inside the complete heat capacity valve, the intermediate chamber 32, the end chamber 63, and the outlet side chamber 61 have the same pressure, and the force of the pressure regulating spring 7 causes the support member 15 to move toward the valve body 1.
The Marzo port 6 is suppressed and moved in the valve opening direction until it hits the stepped portion, and the valve portion consisting of the annular valve seat 4 and the valve ring 5 is maintained at its maximum opening.

In this state, when a fluid such as water starts to flow inside the complete heat capacity valve, the fluid flowing from the fluid volume 2 flows from the annular chamber 60 into the valve portion as a primary pressure fluid.

End chamber 36. It flows into the intermediate chamber 32 through the flow path 64 and acts on the movable partition wall 8, and the valve port 6 is displaced to the point where the primary pressure balances the force of the pressure regulating spring 7, and the initial regulating pressure P of the intermediate chamber 32 is . is determined (provided that the outlet side chamber 61 is at atmospheric pressure). In this case, no matter how much the pressure in the annular chamber 60 fluctuates, no moving force acts on the valve bows 1 and 2, so the pressure regulation in the intermediate chamber 62 is not affected. In addition, the initial adjustment pressure P of the intermediate chamber 62. can be arbitrarily set by moving the pressure regulating member 19.

However, since the fluid in the end chamber 36 flows into the outlet side chamber 61 through the inside of the valve port 6 and the outer periphery of the temperature-sensitive elastic element 24, the pressure P1 of the outlet side chamber 31 acts on the movable partition wall 8, and the pressure P1 As a result, the valve port 6 is moved in the direction of opening enlargement, so that the initial regulating pressure of the intermediate chamber 32 increases. If the initial adjustment force after this increase is P2, then P2-P. The pressure will be regulated with +P. Note that the pressure P1 of the outlet side chamber 31 varies depending on the degree of opening of the fluid outlet 3 side.

Further, even if the pressure in the annular chamber 30 and the outlet side chamber 61 fluctuates, if the opening area of the temperature detection flow rate adjustment valve is constant,
The pressure difference before and after the flow rate adjustment valve, that is, the pressure difference between the end chamber 66 and the outlet side chamber 61, is constant, and therefore a constant flow rate of fluid flows out. In addition, temperature-sensitive elastic element 2
When the temperature of the fluid flowing around the outer circumference of the temperature-sensitive elastic element 24 increases, the temperature-sensitive elastic element 24 expands, the regulating valve body 21 is moved in the direction of expanding the opening area, and the flow flowing around the outer circumference of the temperature-sensitive elastic element 24 increases. When the temperature becomes low, the temperature-sensitive elastic element 24 is shortened and the regulating valve body 21 is moved in the direction of reducing the opening area, so that the flow rate is automatically adjusted to change in proportion to the height of the fluid temperature. .

When the fluid volume 2 in the constant heat capacity valve of this invention is connected to a water supply pipe and the fluid outlet filter is connected to a water heater such as an instantaneous water heater, the flow rate is automatically reduced when the temperature of the tap water is low. In addition, when the temperature of tap water is high, the flow rate is automatically adjusted to increase, so the temperature of the discharged hot water is kept almost constant when using a constant calorific value burner. Furthermore, even if the pressure of the tap water changes or the degree of opening on the fluid outlet side changes, the pressure difference on both sides of the movable bulkhead 8 is always constant, so the temperature of the discharged water when using a constant calorific value burner is remains almost constant.

FIGS. 2 and 6 show a second embodiment of the present invention, in which an adjusting member 3 with a handle 65 fixed to the proximal end thereof is shown.
6 is screwed to the lid member 11, and the adjusting member 66
The tip end shaft portion of the support tube 68 is penetrated by the lid member 111, one end portion of the support tube 68 having the communication hole 37 in the side wall is screwed and fixed to the lid portion side 11, and the other end portion of the support tube tube 68 is screwed and fixed to the lid portion side 11. A support fitting 39 that is slidably fitted into the valve port 6 and has a communication hole is fitted and fixed inside one end of the support cylinder 38, and the casing 25 of the temperature-sensitive elastic element 24 is fitted with the support fitting 69. The end face of the casing 25 is in contact with the tip of the adjusting member 36.

The center part of a movable partition wall 8 made of a metal diaphragm is screwed and fixed to the end of the valve port 6, and the movable partition wall 8
The O-ring 40 fitted in the annular groove on the outer periphery of the valve body 1 is slidably fitted into the valve body 1, the pressure regulating spring 7 is engaged with the center of the movable bulkhead 8, and the A truncated cone-shaped valve hole 20 is provided, and an adjustment valve body 21 facing the valve hole 20 is fitted and locked to a movable syringer 26 of a temperature-sensitive elastic element 24, and the adjustment valve body 21 and a support cylinder are engaged with each other. Although the opening reduction spring 26 is interposed between the opening reduction spring 26 and the other end of the opening 68, the other structure and operation are the same as in the first embodiment.

In the case of the second embodiment, when the handle 35 is gripped and the adjustment member 66 is rotated, the temperature-sensitive elastic element 24 is moved by the adjustment member 66, so that the relationship between the fluid temperature and the outflow amount is maintained at a constant pressure difference. can be adjusted. In addition, in FIG. 2 and FIG. 6, 41-43 are O-rings.

According to this invention, an annular valve seat 4 is provided between the fluid port 2 and the other end of the valve box 1 in the valve box 1 which has the fluid port 2 in the middle portion and the fluid outlet 6 at one end. The intermediate portion of a cylindrical valve port 6 having a valve ring 5 facing the annular valve seat 4 is slidably fitted within the valve body 1 between the fluid port 2 and the fluid outlet 6. , a pressure regulating spring 7 is attached to the valve port B to press it in the valve opening direction.
A movable partition wall 8 is provided between the valve port 6 and a portion of the valve body 1 between the valve port fitting part and the fluid outlet 6, and the valve port B is automatically moved in proportion to the fluid temperature. Since a temperature detection flow rate adjustment valve whose open area is expanded is provided at the 2nd side, the fluid temperature remains constant regardless of fluctuations in the fluid pressure flowing in from the fluid outlet 2, that is, the primary pressure, and the fluid pressure flowing out from the fluid outlet 6. If so, a constant flow rate of fluid can flow out, and the open area of the temperature detection flow rate adjustment valve is automatically adjusted in proportion to the fluid temperature. The flow rate can be adjusted so that the flow rate increases automatically, and therefore the product of the difference between the arbitrarily set temperature and the fluid temperature and the fluid flow rate flowing out per unit time, that is, the heat capacity from the set temperature is always the same. This provides the effect of allowing the fluid to flow out.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing a constant heat capacity valve according to a first embodiment of the invention, FIG. 2 is a longitudinal sectional side view showing a constant heat capacity valve according to a second embodiment of the invention, and FIG. FIG. 3 is a longitudinal side view showing a part of the figure enlarged. In the figure, 1 is a valve box, 2 is a fluid inlet, 6 is a fluid outlet,
4 is an annular valve seat, 5 is a valve ring, 6 is a valve port, 7 is a pressure regulating spring, 8 is a plastic partition, 15 is a support member, 19 is an annular pressure regulating member, 20 is a valve hole, 21 is an regulating valve body, 26 is a spring for reducing the opening, 24 is a temperature-sensitive elastic element, 26 is a silanja, 60
61 is an annular chamber, 61 is an outlet side chamber, 32 is an intermediate chamber, 63 is an end chamber, 34 is a flow path, 65 is a handle, 66 is an adjustment member, 6
8 is a support cylinder.

Claims (1)

[Claims] A fluid population 2 is provided in the middle part of the valve box 1, and the valve box 1
A fluid outlet 3 is provided at one end, and an annular valve seat 4 is provided in the valve body 1 between the fluid outlet 2 and the other end of the valve body, and a valve ring facing the annular valve seat 4 is provided. The middle part of the cylindrical valve port 6 having a diameter 5 is slidably fitted into the valve body 1 between the fluid port 2 and the fluid outlet 6, and the valve port 6 is provided with a valve port 5 for opening the valve. A movable partition wall 8 is provided between the knob port 6 and a portion of the valve case 1 between the valve port fitting portion and the fluid outlet 60. An electrothermal capacity valve characterized by being provided with a temperature detection flow rate adjustment valve whose open area is automatically expanded in proportion to fluid temperature.