JPH0451275Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is an on-off valve device for a heat storage water tank, specifically, it is installed in a drain pipe that drains cold water and hot water stored in the heat storage water tank using a heat pump chiller, etc. The present invention relates to an on-off valve device for a heat storage water tank that opens and closes the drain pipe.

(Prior Art) As a conventional on-off valve device for a heat storage water tank, there is one shown in FIG. 7, for example. In FIG. 7, reference numeral 1 denotes a heat storage water tank, and cold water or hot water 2 is stored in the heat storage water tank 1 at night or the like by a heat pump chiller (not shown), and the heat is utilized during the day. The heat storage water tank 1 is partitioned into a plurality of sub-water tanks 5 ( _5A to _5D ) by providing a partition wall 3 inside the heat storage water tank 1. Upper part 3a of partition wall 3, 3 _A or lower part 3b of partition wall 3, 3 _B
A communication pipe 6 having a communication hole 6a communicates between adjacent sub-water tanks 5, and cold or hot water is provided from the upstream sub-water tanks 5, _5A of the heat storage water tank 1 to the downstream sub-water tanks 5, _5D . 2 are provided so that they can flow downward as shown by arrows. Although not shown, a rectifying plate is provided in each sub-water tank 5 to lengthen the flow path of the cold water or hot water 2 and to form a uniform flow. 7 is a ventilation hole. Upper part 3
In the lower part 3b of the partition wall _3A , which has the communication pipe 6 in
A drain pipe 8 having a diameter smaller than the hole diameter of the communication pipe 6
is provided and used to discharge cold water or hot water 2 when cleaning the inside of the heat storage water tank 1.

(Problem to be solved by the invention) However, normally in such a heat storage water tank 1, the cold water or hot water 2 flows from the upstream side to the downstream side in the sub-water tank 5 through the communication pipe 6, and the heat storage is not effectively carried out. However, some cold or hot water 2
_A short passes through the drain pipe 8 (indicated by dotted line _2A in the figure), and the heat storage tank 1 is not fully utilized.
The problem is that the utilization rate can drop to around 50%.

Also, a check valve is sometimes used to prevent this cold water or hot water 2 from passing through the drain pipe 8, but this check valve requires water pressure, and when the water level is high and there is water pressure, Although it works well, it has the problem that it drains water like a drain pipe, and when the water level is low, the valve closes, making it impossible to drain water sufficiently.

(Purpose of the invention) Therefore, the present invention was developed when using a normal heat storage water tank.
When the water level of cold water and hot water is high, the drain pipe is closed and the utilization rate of the thermal storage tank is high.When the thermal storage tank is cleaned, the drain pipe is opened and cold water and hot water can be drained quickly.Thermal storage tank with excellent drainage efficiency. The purpose of this invention is to provide an on-off valve device.

(Means for Solving the Problems) The on-off valve device for a heat storage water tank according to the present invention includes a heat storage water tank that stores cold water and hot water, a partition wall that partitions the heat storage water tank and forms a plurality of sub-water tanks, and a lower part of the partition wall. A water pipe having a communication hole that communicates between two sub-tanks adjacent to the auxiliary aquarium, a floating body part provided at the upper part having buoyancy, and a valve body part provided at the lower part which can open and close the communication hole, and a sub-aquarium on one side. When the water level of the sub-tank on one side is high, the floating part rises and the valve body closes the communication hole, and the valve body of the sub-tank on one side closes the communication hole. It is characterized in that as the water level decreases, the floating body part descends and the opening/closing valve body rotates, so that the valve body opens the communication hole and drains water from the sub-tank on the other side.

(Function) In the on-off valve device for a heat storage water tank of the present invention, an on-off valve body is locked in a sub-tank on one side of the heat storage water tank, and a floating body portion having buoyancy is provided on the upper part of the on-off valve body. At the bottom of the partition, there is a valve body that can open and close the communication hole provided at the bottom of the bulkhead, so when the water level in the sub-tank on one side is high, the floating body rises due to buoyancy and the valve body opens. Close the hole. Therefore, cold water and hot water are stored in the normal flow path and are not short-circuited. Further, as the water level in the sub-tank on one side decreases, the floating body portion descends, and the opening/closing valve body rotates, and the valve body opens the communication hole to drain water from the sub-tank on the other side.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

1 to 3 are diagrams showing a first embodiment of an on-off valve device for a heat storage water tank according to the present invention.

First, the configuration will be explained. In FIG. 1, reference numeral 11 denotes an on-off valve device for a heat storage water tank.
Partition wall 1 forming two sub-tanks 15, 15 _A , 15 _B
6.16 _A. The heat storage water tank 13 is located outside the partition walls 16, 16 _A , and corresponds to the partition wall 3 _B in FIG.
It has a partition wall _16B . In the upper part 16a of the partition wall 16, _16A ( _16A will be explained below),
A communication pipe (pipe diameter 75 to 600 mm) 17 is provided to communicate the two sub-water tanks 15 _A and 15 _B , and the heat storage water tank 13
When in use, the cold water and hot water 12 flow through the communication pipe 17 from the upstream side sub-water tank _15A to the downstream side sub-water tank _15B and accumulate heat therein. 18 is a ventilation pipe;
The ventilation pipe 18 is provided at the upper end 16b of the partition wall 16, and allows air to flow between the two sub-tanks 15. A drain pipe (water pipe) (pipe diameter
75 mm (usually 75 to 100 mm) 20, and the drain pipe 20 has a communication hole 21 that communicates between two adjacent sub-tanks _15A and _15B , as shown in FIG. In addition, the drain pipe ₂₀ protrudes approximately 400 mm from the partition wall 16 to the downstream side (sub-tank 15 _B side), and the tip 20a of the drain pipe 20 is connected to the opening surface 2 of the communication hole 21.
1a is opened so as to face upward and be inclined.
23 is an on-off valve body, and the upper part 23 of the on-off valve body 23
A is a spherical float (floating body part) that has buoyancy in water.
(about 100 mm in diameter) 24, and a plate-shaped valve body (valve body portion) 25 that can open and close the opening surface 21a of the communication hole 21 is provided at the lower part 23b of the on-off valve body 23. A plate-shaped rubber packing 26 is attached to the surface of the valve body 25 that is in contact with the opening surface 21a of the communication hole 21, and completely closes the communication hole 21 when the valve body 25 is closed. The center portion 23c of the on-off valve body 23 is connected to the tip portion 2 of the drain pipe 20 that protrudes into the water tank _15B on the downstream side.
It is rotatably locked on the upper side of 0a by a support pin 22. Distance from support pin 22 to float 24
L ₂₄ is approximately 250 mm, and distance L ₂₅ to the central portion 25a of the valve body 25 is approximately 100 mm. With such a configuration, the on-off valve body 23 operates as described below. Water level 12a of sub-water tank _15B on the downstream side of heat storage water tank 13
When the float 24 is high, as shown in FIGS. 1 and 3, the float 24 rises due to buoyancy, rotates the opening/closing valve body 23 around the support pin 22, and the valve body 25 moves into the communication hole 21.
The opening surface 21a is closed. Downstream side sub-tank 15
As the water level 12a of _B decreases, the float 24 descends and rotates the on-off valve body 23 around the support pin 22, as shown in FIG.
1a is opened and the water in the upstream sub-tank _15A is drained.

Next, the effect will be explained.

The present invention has a communication hole 21 in the lower part 16c of the partition walls 16, _16A of the heat storage water tank 13 that communicates between the two adjacent sub-water tanks _15A and _15B , and a drain pipe 20 that projects downstream, and a drain pipe. 20 tip 20a
Since the open/close valve body 23 is rotatably locked on the upper side by the support pin 22, the cold water and hot water 12
When the water level 12a is high, the float 24 of the on-off valve body 23 rises to rotate the on-off valve body 23 about the support pin 22, and the valve body 25 moves to the opening surface 2 of the communication hole 21.
Close 1a. For this reason, the sub-tank 15 on the upstream side
The cold water and hot water 12 in _A flow down to the sub-water tank _15B on the downstream side through only the communication pipe 17, and there is no short pass for the cold water and hot water 12 as in the conventional case, and the cold water and hot water 12 in the sub-water tank 15 are approximately 100% % heat storage, greatly improving heat storage efficiency. In addition, when cleaning the inside of the heat storage water tank 13, the sub-water tank 1 on the downstream side
5 Start draining cold water and hot water 12 from _B and water level 1
2a decreases. When the water level 12a drops below a certain water level 12a, the upstream sub-tank _15A and the sub-tank 1
By comparing the closing force due to the buoyancy of the on-off valve body 23 and the opening force due to the water level difference due to the water level difference at 5 _B , if the opening force becomes larger, the on-off valve body 23 rotates around the support pin 22. The valve body 25 separates from the opening surface 21a of the communication hole 21, and the cold water and hot water 12 from the upstream sub-water tank _15A begin to flow out. water level 12
When the water level in the sub-water tank _15B is lowered by a large drop in the float 24, the valve body 25 becomes far away from the opening surface 21a, the opening degree of the communication hole 21 increases, and the flow of cold water and hot water 12 increases. Cold water and hot water 12, regardless of water pressure like traditional check valves
The cold water and hot water 12 from the sub-water tank _15A can be discharged quickly, and the discharge efficiency can be greatly improved. Therefore, the efficiency of cleaning inside the heat storage water tank 13 can be greatly improved.

In the above-mentioned embodiment, the on-off valve body 23 is fixed in the sub-tank 15B on the downstream side. However, when drainage starts from the sub-tank on the upstream side, the on-off valve body 23 is fixed in the sub-tank on the upstream side. It will be locked.

Furthermore, in the above-mentioned embodiment, the central portion 23c of the on-off valve body 23 was latched to the upper side of the distal end portion 20a of the drain pipe 20, but the on-off valve body 23
As in the second embodiment shown in FIG.
It may be locked to the tip end 28a of the beam 28 that protrudes into the sub-water tank _15B on the downstream side. The configuration other than the above is the same as the first embodiment.

Next, a third embodiment of the present invention will be described.

FIG. 5 is a diagram showing a third embodiment of the on-off valve device for a thermal storage water tank of the present invention. In the third embodiment, the distal end 30a of the drain pipe 30 is opened such that the opening surface 31a of the communication hole 31 faces downward and the lower end 33a of the on-off valve body 33 is at the distal end of the drain pipe 30. This is a case in which the opening/closing valve body 33 is supported by a support pin 22 on the lower side of the portion 30a, and is rotatably supported around the support pin 22. Everything other than the above is the same as the first embodiment.

FIG. 6 is a diagram showing a fourth embodiment, in which the lower end 33a of the on-off valve body 33 is connected to the distal end of the drain pipe 30 in the third embodiment.
On-off valve body 33 was supported on the lower side of 0a.
This is a case in which the lower end 33a of the auxiliary water tank _15B is locked at a predetermined position on the bottom wall 15c, and the opening surface 31a of the communication hole 31 is opened and closed by the valve body 25 of the on-off valve body 33. Everything other than the above is the same as the third embodiment.

(Effects) As explained above, according to the present invention, when the water level of cold water and hot water is high during normal use of the thermal storage water tank, the drain pipe is closed, and the cold water and hot water only pass through the specified communication pipe. The heat storage efficiency can be greatly improved by flowing down or being stored, and when cleaning the heat storage water tank, the cold water and hot water can be discharged quickly and the discharge efficiency can be greatly improved, and the cleaning can be done in a short time and the cleaning efficiency can be greatly improved.

[Brief explanation of the drawing]

1 to 3 are diagrams showing a first embodiment of the on-off valve device for a thermal storage water tank according to the present invention, FIG. 1 is a partial cross-sectional view showing the state during normal use, and FIG. FIG. 3 is an enlarged sectional view of the main part thereof, and FIG. 4 is a sectional view of the main part showing the second embodiment of the present invention. FIG. 5 is a sectional view of a main part showing a third embodiment of the present invention. FIG. 6 is a sectional view of a main part showing a fourth embodiment of the present invention. FIG. 7 is a partial sectional view showing a conventional heat storage water tank. 11... Opening/closing valve device for heat storage water tank, 12... Cold water and hot water, 13... Heat storage water tank, 15... Sub-water tank, 16... Partition wall, 17... Communication pipe, 20, 30
...Drain pipe, 21, 31...Communication hole, 22...Support pin, 23, 33...Opening/closing valve body, 24...Float (floating body part), 25...Valve body (valve body part), 26... ...Rubber padskin, 28...beam.

Claims (1)

[Scope of utility model registration request] A heat storage water tank that stores cold water and hot water, a partition wall that partitions the heat storage water tank and forms a plurality of sub-water tanks, a water pipe having a communication hole that communicates between two sub-water tanks adjacent to the lower part of the partition wall, and a water pipe provided at the upper part. A floating body part having a buoyancy and an opening/closing valve body provided at the lower part and having a valve body part that can open and close a communication hole and rotatably locked in a sub-tank on one side. When the water level in the water tank is high, the floating body part rises and the valve body closes the communication hole, and as the water level in the sub-tank on one side decreases, the floating body part descends and the opening/closing valve body rotates, causing the valve body to close. An opening/closing valve device for a thermal storage tank, characterized in that the opening/closing valve device opens a communication hole to drain water from a sub-tank on the other side.