JPS58178068A - 4-way thermo selector valve and solar system using this valve - Google Patents

Abstract

PURPOSE:To perform cost down of a system as a whole, by obtaining a 4-way thermo selector valve, which provides two times the capability of a 3-way selector valve, to both remarkably simplify piping construction and eliminate the necessity for a conventional thermostat. CONSTITUTION:In a solar system equipped with a heat collector 1, heat accumulator tank 2, pump 3 and an auxiliary heat source 6, a 4-way thermo selector valve A is interposed between an outlet line 5 and an auxiliary outlet line 12 taking out high temperature water from the source 6. While a cool water supply line 11 and a faucet line 13 are also connected to said valve A. This valve A is constituted by providing a temperature sensing chamber 27 equipped with a temperature sensing unit 28 between a mixing chamber 26 communicated to the first-third inlets 22-24 and an outlet 25. Then if, for instance, temperature of hot water from the tank 2 is high, expansion of the unit 28 lowers the first valve body 29 to limit an inflow amount of hot water from the inlet 22 while lowers the third valve body 31 to introduce cool water from the inlet 24 and fix the temperature of hot water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a four-way switching valve and a solar system using this valve.

Conventionally, as a solar system for obtaining hot water using solar heat, there is a system using a three-way switching valve.

As shown in Figure 1, this conventional solar system includes a heat collector 1 that receives sunlight, a heat storage tank 2 that receives and takes hot water heated by the heat collector 1, and is replenished with cold water. An annular line 4 with a pump 3 that circulates hot water between the heat storage tank 2 and the heat collector 10, an auxiliary heat source 6 and a three-way switching valve 7 connected to an outlet line 5 that takes out hot water from the heat storage tank 2.
It is equipped with. The outlet of the switching valve 7 is connected to a faucet valve via a second three-way switching valve 8.

Said pump 3 is operated by a thermostat 9 which detects when the temperature of the hot water in the heat storage tank 2 has fallen below the temperature of that in the heat collector 1. The auxiliary heat source 6 is activated by a thermostat 10 that detects that the temperature of the hot water in the heat storage tank 2 is too low. .

That is, when the temperature of the hot water in the heat storage tank 2 is sufficient, the hot water is led to the faucet via the outlet line 5, the 3-way switching valve 7, and the 2033rd-evening switching valve 8, and the temperature in the heat storage tank 2 increases. When water becomes insufficient, the hot water in the heat storage tank 2 is guided to the faucet via the outlet line 5, the auxiliary heat source 6, the three-way switching valve 7, and the second three-way switching valve 8, and the water at the faucet is always maintained at the desired temperature. So that you can get hot water.

If the temperature inside the heat storage tank 2 is too high, cold water is mixed into the second three-way switching valve 8 from the cold water supply line 11 by manual operation to perform cooling. Furthermore, an auxiliary heat source 6
Similarly, if the temperature in the cold water supply line 1 is too high,
Cold water is mixed from step 1. In this case, it may be possible to adjust the operating point of the thermostat 10 in order to raise the heating start temperature of the auxiliary heat source 6, but this is time consuming, does not respond to the temperature adjustment of hot water, and is instantaneous. There are problems such as hot water coming out.

2, conventional solar systems using 3-way switching valves require two 3-way switching valves, which has the disadvantage of complicating the piping, and also makes it difficult to use hot water as an auxiliary heat source. When the temperature is too high, the hot water in the heat storage tank, which is at a much lower temperature, cannot be used, and cold water must be supplied externally, which has the disadvantage of increasing fuel costs.

The present invention was made to solve these conventional problems, and includes a four-way thermoswitching valve that can perform the functions of two three-way switching valves, and a piping structure that is extremely simple. It is an object of the present invention to provide a solar system using the four-way thermoswitching valve that is simple.

The present invention will be explained below with reference to embodiments shown in FIGS. 2 to 4.

2 and 3 show an embodiment of a four-way thermo-switching valve A according to the present invention, which includes a housing 20 and a valve shaft 21 inserted into the housing 20.

The housing 20 has first, second and third inlets 22, 23, 24 into which fluid is introduced, one outlet 25, a mixing chamber 26 communicating with the first to third ports, and a mixing chamber 26. and a sensitive chamber 27 formed between the outlet 25 and the outlet 25.

A heat-sensitive body 28 is provided within the temperature-sensitive chamber 27 and expands and contracts according to the temperature of the fluid to move the valve shaft 21 in the longitudinal direction.

On the other hand, a valve shaft 2 is provided between the first population 22 and the mixing chamber 26.
A first valve body 29 fixed to 1 is disposed, and a second valve body 23
Between the mixing chamber 26 and the mixing chamber 26, there is a slidable contact with the valve stem 21 so as to normally block fluid flow and allow fluid to flow when the valve stem 21 is moved in one direction by the heat sensitive element 28. A second valve body 30 is disposed between the third valve body 24 and the mixing chamber 26, and the valve shaft 21 is arranged in the direction in which the second valve body 30 is opened. A third valve body 31 is arranged so as to be slidable on the valve shaft 21 so as to conduct fluid when the valve body 31 is moved in the opposite direction. It goes without saying that valve seats 32, 33, and 34 corresponding to these first to third valve bodies 29, 30, and 31 are provided on the 71 wudging 20.

Still, a spring 35 is provided around the valve shaft 21 between the second and third valve bodies 30, 31 to press against the valve seats 33, 34 in order to keep the second and third valve bodies 30, 31 closed at all times. An auxiliary spring 36 is provided around the valve shaft 21 on the lower side of the second valve body 30, which opposes the spring 35 but has a weaker force than the spring 35.

The first valve body 29 is normally positioned in an open state that maximizes the flow rate.

A bolt-like handle 37 for adjusting the initial position of the valve stem 21 is mounted on the second part of the housing 20.

To explain the operation of the four-way Rosamo switching valve, fluid normally flows between the first port 22 and the outlet 25. 1st population 2
If the temperature of the fluid entering 2 is too high, the heat sensitive body 28 will, for example, expand (or even contract), lowering the first valve body 29 to limit the amount of fluid inflow from the first valve body and The third valve body is lowered to allow fluid to enter the third valve body 24. Therefore, by connecting a low-temperature fluid introduction pipe to the third population 24, it is possible to mix it with the fluid from the first population 22 in the mixing chamber 26 to obtain a fluid at a constant temperature. still,
In this case, it is clear that when the flow rate from the third valve body 24 increases and the temperature inside the sensitive chamber 27 decreases, the heat sensitive element 28 shrinks, causing the valve shaft 21 to rise and closing the third valve body 31. be. Further, the second valve body 30 is held closed by the force of a spring 35.

Next, the temperature force of the fluid entering from the first population 22; if it is too low, the heat sensitive body 28 will shrink and the valve stem 21 will rise, and the first
While restricting the flow rate at the valve body 29, the second valve body 30 is opened. Therefore, by connecting a high-temperature fluid introduction pipe to the second population 23, it is possible to mix it with the fluid from the first population 22 and maintain the desired temperature. In addition, in the case of
The third valve body 31 is held in the closed state by the force of the suction ring 35.

Still, when the valve stem 21 rises, the auxiliary spring 36
It serves to assist the heat sensitive element 28.

In the conventional three-way switching valve, only one type of fluid can be mixed between the first port 22 and the outlet 25, but in the four-way switching valve of the present invention, two types of fluid can be mixed in between the first port 22 and the outlet 25. Since it can be selectively mixed, it is possible to achieve a function equivalent to or better than the case where conventional three-way switching is connected in two stages.

FIG. 4 shows an embodiment of a solar system using the above-mentioned four-way thermoswitching valve A, which includes a heat collector 1, a heat storage tank 2, an annular line 4 having a pump 3, and an outlet. line 5 and an auxiliary heat source 6. Note that the pump 3 is also provided with a thermostat 9.

Further, according to the present invention, a four-way rosothermo switching valve A is disposed connected to the outlet line 5 and the auxiliary outlet line 12 for taking out high-temperature water from the auxiliary heat source 6, and the four-way rosothermo switching valve A is connected to the cold water supply. Line 11 and faucet line 13 are also connected. To explain this in detail, the outlet line 5 is connected to the first outlet 22 of the four-way thermoswitching valve A, the auxiliary outlet line 12 is also connected to the second outlet 23, the cold water supply line 11 is connected to the third outlet 24, and the faucet line 13 is connected to the outlet 25.

To explain the operation of the solar system, when the temperature of the hot water in the heat storage tank 2 is appropriate, the first valve body 29 maximizes the amount of hot water passing through the outlet line 5, and the flow rate is controlled on the faucet side. If the hot water temperature in the outlet line 5 is too high, the first valve body 2
9 limits the flow rate, and the third valve body 31 opens to introduce cold water from the cold water supply line 11. Therefore, the hot water exiting the outlet 25 is maintained at the desired temperature.

Furthermore, when the temperature of the hot water in the outlet line 5 decreases due to insufficient sunlight, the first valve body 2 still limits the flow rate, the second valve body 30 opens, and the third valve body 3J closes to assist the flow. Hot water from heat source 6 is introduced.

Therefore, hot water at the desired temperature is always available at the outlet 25.

As described above, according to the no-large system of the present invention, only one switching valve is required and the thermostat 10 is not required, so that the configuration is extremely simple.

Still, since each of the first valve body 29 and the second and third valve bodies 30, 3] are interlocked with each other, there is an advantage that the amount a of fluid passing through the outlet 25 is always constant. Furthermore, in the conventional system, even if the temperature of the hot water in the heat storage tank 2 is too high, it was impossible to automatically mix the cold water (/C), but with the present invention, it is possible to mix the hot water The risk of this occurring is avoided.

As explained above, according to the present invention, the four-way thermo-switching valve has the functions of two three-way switching valves, the configuration is extremely simple, and the auxiliary heat source 11-34...the third valve seat. , 35... When the spring is activated, the solar system can stop the supply of cold water and save fuel consumption.

[Brief explanation of the drawing]

Fig. 1 is a piping diagram of a conventional solar system, Fig. 2 is a longitudinal cross-sectional view of a four-way thermoswitching valve according to an embodiment of the present invention, Fig. 3 is a right side view of Fig. 2, and Fig. 4 1 is a piping diagram of a solar system according to an embodiment of the present invention. 1... Heat collector, 2... Heat storage tank, 3...
Pump, 4. Annular line, 5. Outlet line, 6. Auxiliary heat source, 11. Cold water supply line, 12. Auxiliary outlet line, 13. Faucet line.
A...40,000 Rosamo switching valve, 20...Housing, 21...Valve shaft, 22...1st population,
23 Second population, 24...Third population, 25.
... Outlet, 26... Mixing chamber, 27... Sensitive chamber, 28... Heat sensitive element, 29... First valve body,
30...Second valve body, 31...Third valve body, 32,
First valve seat, 33...Second valve seat, 12- Patent applicant Tokyo Warm and Cooler Manufacturing Co., Ltd. Figure 3 A Kazuo Wakasugi Tono 1, Indication of matter 1 Patent application 1982-6076482,
Title of the invention 4-way thermo-switching valve and solar system 3 using this valve; Relationship with the amended person's case Patent applicant: 1-49-15 Ceiling, Shinyoku-ku, Tokyo; Representative, Tokyo Warm and Cooler Seisakusho Co., Ltd. Director Matsu 1) Ministry of Finance Department 4, Agent, 6th floor, Kimuraya Otsuka Building, Shin 191-18-19, Minato-ku, Tokyo Voluntary correction Showa, Month, Day 7, page 7, line 19, 1, but... assistance.'' ``3-way switching valve'' was corrected to ``drought mixing valve.'' The fact that the difference between the temperature of the hot water in container 1 and the temperature difference is larger than the set temperature difference is corrected as 1. 3. Line 20 of the same page to line 1 of page 5 J: and page 3 of page 5
- Change the "second 3-way switching valve" on the 4th line to the "drought mixing valve"
and correct them respectively. 4. Change "Manual operation...switching valve" on the 7th line of page 5 to "
First, correct it as "Drought mixing valve". 5. On lines 16-17 of the same page, “3-way switching valve... is 2
"Required" is corrected to "Conventional solar systems require two valves: a 3-way switching valve and a hot water mixing valve." 6. Correct "3-way switching valve" in the 3rd line of page 6 to "3-way switching valve and drought mixing valve." 8. In page 8, line 9, ``For example, expand (or contract)'' should be corrected to ``expand,''. 9. Change "To population 2/I" on the 12th line of the same page to "Entrance 24
kara” and correct it. 10. Correct "shrinkage" in line 18 of the same page and line 3 of page 9 with "shrinkage 1" respectively. 11. Correct "auxiliary spring 36" in line 10 of page 9,
Correct it with "Spring 36". 12. On the 11th line of the same page, first correct the word ``1 auxiliary letter'' to ``return.'' 13. On the 16th line of the same page, ``13-way switching'' has been corrected to ``3-way switching valve and drought mixing valve.'' 14. Correct "3-way switching valve" in lines 18-19 of page 11 to "3-way switching valve and lake water mixing valve." 15, 1 supply in the 1st and 2nd lines of page 12...1qru1
The supply is stopped, eliminating the waste of adding cold water to the hot water obtained from the heat collector to cool it, as in the conventional equipment, and improving efficiency by saving fuel consumption. 16. Between the 11th and 12th lines of the same page, “7...3
30,000-way switching valve 8...Hot water mixing valve 9...()-
1 Mostat 1-10... Add thermostat [-'1. 17, page 13, second line 1 auxiliary spring-1,
"Spring" and correct it. 18. First, correct Figure 1 as shown in the attached sheet. 8. Attached documents catalog correction drawing (Figure 1) 1 or more copies 1-

Claims (2)

[Claims] (1) comprising a housing and a valve shaft inserted into the housing; the housing includes a first valve shaft into which a fluid is introduced;
second and third inlets; one outlet; and the first and second inlets;
It has a mixing chamber communicating with a third population, and a sensitive chamber formed between the mixing chamber and the outlet, and the temperature sensitive chamber expands and contracts according to the temperature of the fluid to move the valve shaft in the longitudinal direction. A first valve body fixed to the valve shaft is disposed between the first valve body and the mixing chamber, and the second valve body is disposed between the first valve body and the mixing chamber.
A second valve body is disposed between the valve stem and the mixing chamber, and is attached to the valve stem so as to normally block fluid flow and allow fluid to flow when the valve stem is moved in one direction by the heat sensitive element. A valve is provided between the third port and the mixing chamber, which normally blocks fluid flow and allows fluid flow when the valve shaft is moved in a direction opposite to the direction in which the second valve body is opened. A four-way thermo-switching valve characterized by having a third valve body mounted on the shaft. (2) A heat collector that receives sunlight, a heat storage tank that receives and takes hot water heated by the heat collector and is replenished with cold water, and circulates hot water between this heat storage tank and the heat collector. an annular line having a pump, an auxiliary heat source connected to an outlet line for taking out hot water from the heat storage tank, and a four-way thermoswitching valve, the four-way switching valve being connected to a housing, and a four-way thermoswitching valve. a valve stem inserted into the valve shaft;
a mixing chamber communicating with the first, second, and third ports; and a temperature-sensitive chamber formed between the mixing chamber and the outlet; A heat sensitive body is provided that expands and contracts in response to the temperature change and moves the valve stem in the longitudinal direction, a first valve body fixed to the valve stem is disposed between the first valve body and the mixing chamber, and the second valve body is disposed between the first valve body and the mixing chamber. A second valve body is installed between the valve stem and the mixing chamber so as to normally block fluid flow and allow fluid to flow when the valve stem is moved in one direction by the heat-sensitive member. is disposed between the third valve body and the mixing chamber, so as to normally block fluid conduction and allow fluid conduction when the valve stem is moved in a direction opposite to the direction in which the second valve body is opened. A third valve body attached to a valve stem is arranged, an outlet line from the heat storage tank is connected to the first outlet, and an auxiliary outlet for taking hot water from the auxiliary heat source to one of the second and third outlets. A solar system characterized in that one line is connected to the other, a cold water mixing line is connected to the other, and a faucet valve is connected to the outlet.