JP2510450Y2 - Flat heat storage system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a flat heat storage tank system suitable for use in a heat storage type air conditioning system using a flat heat storage tank.

[Prior Art] Conventionally, a cold / hot water type air conditioner having a flat heat storage tank is known. An example of the configuration is shown in FIG.

In FIG. 3, hot water or cold water (hereinafter collectively referred to as fluid) drawn from the flat heat storage tank 50 by the secondary pump 51 is supplied to the air conditioner 52 through the pipe 56. The fluid discharged from the air conditioner 52 flows into the flat heat storage tank 50 through the pipe 57. The fluid near the inlet of the flat heat storage tank 50 is pumped up by the primary pump 53 and supplied to the heat source device 54. When the valves 59 and 60 are opened, the fluid pumped from the flat heat storage tank 50 by the primary pump 53 is supplied to the heat source device 54 through the pipe 58 and the valve 59, and the valve 6
It flows into the vicinity of the outlet of the flat heat storage tank 50 through the pipe 61.

[Problems to be solved by the invention] Now, in order to store heat efficiently and use it efficiently,
It is necessary to properly separate the temperatures on the high temperature side and the low temperature side of the heat storage tank.

In the case of a stratified heat storage tank, the difference in specific gravity due to the temperature of the fluid is used, so even if the secondary side return water temperature changes over time, it will always automatically be on the high temperature side, that is, the upper part of the heat storage tank,
Since it is separated into the low temperature side, that is, the lower part of the heat storage tank,
Good temperature separation, but in case of flat heat storage tank, 2
Due to the time history that the return water temperature on the secondary side varies depending on the time used, even if the high temperature tank side is not high temperature, or even if there is a sufficiently high or low temperature fluid in the middle tank, There is a problem that it can not be used,
It was difficult to use it efficiently.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a flat heat storage tank system capable of favorably separating temperatures in a system using the flat heat storage tank.

[Means for Solving the Problems] In order to achieve the above object, the flat-type heat storage tank system of the present invention is divided into a plurality of partial tanks by a partition wall, and the fluid flows from the inlet to the outlet. Flat heat storage tank configured to flow through a partial tank, a heat exchanger connected to the outlet of the flat heat storage tank, a plurality of outlets of the heat exchanger and the flat heat storage tank. A plurality of pipes that are connected to the inflow port and that have a self-powered temperature control valve that opens and closes according to the temperature of the fluid that flows out from the outflow port of the heat exchanger.

[Operation and Effect of Invention] According to the flat heat storage tank system of the present invention, the flat heat storage tank is divided into a plurality of partial tanks by the partition wall, and the fluid flows from the inflow port to the outflow port in the partial tank. Since it is designed to flow through, the fluid is regularly arranged from the low temperature side to the high temperature side, and since the temperature difference between the heat storage tank and the return water is small, the mixing loss can be reduced and heat can be stored efficiently. , Can be used.

Further, since the fluid flowing out from the heat exchanger flows into the partial tank in which the fluid having the similar temperature is stored, the efficiency of heat storage can be improved.

Further, since the partial tank to which the fluid is returned is automatically selected by the self-powered temperature control valve, a temperature detecting element and a control device for opening and closing the valve according to the detected temperature are not required and the cost can be reduced. .

Examples Examples will be described below with reference to the drawings.

FIG. 1 is a diagram showing a configuration of an embodiment of a flat type heat storage tank system according to the present invention, in which 1 is a flat type heat storage tank, 2 ₁ ,
…, 2 _m ,…, 2 _n are partial tanks, 3 are pumps, 4 are heat exchangers,
5, 6, and 7 are self-operated temperature control valves, 8, 9, 10, 11, and 12 are pipes, 13 is a partition wall, and 14 is a valve.

In FIG. 1, the flat heat storage tank 1 is divided into a plurality of partial tanks by a partition wall 13 in order to separate the fluids according to the temperature, whereby the fluids are arranged in order from the low temperature side to the high temperature side. Then, the fluid flows from partial tank 2 ₁ to partial tank 2 _n
Not only does it flow toward, but it may also flow back in the opposite direction.

The fluid in the partial tank 2 _n , which is the outlet of the flat type heat storage tank 1, is introduced into the heat exchanger 4 by the pump 3 through the pipe 8.
Now, a portion tank 2 ₁ cold side, the partial tank 2 _n is the hot side heat exchanger 4 is a cold source apparatus for utilization device or cooling, for heating. The fluid discharged from the heat exchanger 4 is introduced into the partial tank corresponding to the temperature of the fluid by the self-operated temperature control valves 5, 6, and 7 via the pipe 9. That is, self-type temperature control valve 7 when the temperature of the fluid flowing out from the heat exchanger 4 is low is automatically opened fluid flows into the portion tank 2 ₁ through the pipe 12, the temperature of the fluid is given If the temperature is within the range, the self-powered temperature control valve 6 opens and the fluid flows into the partial tank 2 _m through the pipe 11. If the temperature of the fluid is sufficiently high, the self-powered temperature control valve 5 opens. Fluid is pipe 10
And flows into the partial tank 2 _n .

Next, the structure of the self-powered temperature control valve will be described with reference to FIG.

FIG. 2 is a cross-sectional view of the self-powered temperature control valve, which comprises a valve body 15 and an actuator 16. The valve body 15 has a mounting portion 31 to which the actuator 16 is mounted and a valve seat 21, and a pipe portion 20 connected to a pipe, a valve shaft 23 to which a valve plug 22 is mounted,
A fixing member 25 liquid-tightly fitted and fixed to a mounting portion 31 of the pipe portion 20 by a sealing member 30, and a cylindrical shape supported by the fixing member 25 and having a valve shaft 23 slidably pierced in the vertical direction of the drawing. The support member 24, a spring 26 that abuts the flange portion of the valve shaft 23 and urges the valve shaft 23 upward in the figure, and an opening through which the valve shaft 23 slidably passes, and a fixing member 25. And a plate-shaped support member 27 that is fixed to the spring 25 and supports the spring 25.

The actuator 16 has a driving shaft 32 and a substantially cylindrical shape, and supports a housing member 35 in which a protrusion 38 and a spring 34 for housing the driving shaft 32 in a predetermined position to restrict radial movement of the driving shaft 32 are housed. The rib-shaped member 33 is formed, and the pipe portion 20
The heat insulating sleeve 29 fixed to the mounting portion 31 by the screw 28 screwed to the mounting portion 31, the adjustment ring 36 fixed to the heat insulating sleeve 29 by the screw 37, and planted at a predetermined position of the adjustment ring 36. The dial limiting pin 39 and the heat insulating sleeve 29 are fitted together, and the sliding member 40 is slidable in the vertical direction in the figure, and the temperature sensitive member 41 fixed to the sliding member 40.
A substantially V-shaped diaphragm 42 supported by the sliding member 40 and the temperature sensitive member 41, and a dial stopper 44 are attached to the temperature setting knob 43 fixed to the temperature sensitive member 41 and the sliding member 40. And a sliding member 47 which is urged upward in the drawing by a spring 34 and slidable with the sliding member 40, and a pipe 46.
And a flow path 45 to which a fluid is supplied, which is connected to the upstream side of the inflow port of the pipe section 20 by a pipe 70, and has a wax in a void 48 formed by the temperature sensitive member 41 and the diaphragm 42. It is enclosed. A resistance 71 is provided in the pipe connected to the upstream side of the pipe portion 20, and the resistance 71 causes a pressure difference to flow the fluid.

In the above structure, if the temperature of the fluid flowing into the flow path 45 through the pipe 46 is equal to or higher than the melting point of the wax, the wax transitions from the solid phase to the liquid phase. This increases the volume of the wax and pushes the diaphragm 42 downward in the figure. Accordingly, the sliding member 47 overcomes the force of the spring 34 and slides downward in the figure. Then, the diaphragm 42 goes down,
When its tip comes into contact with the tip of the drive shaft 32, the drive shaft 32 is pushed down, and the drive shaft 32 overcomes the force of the spring 26 to push the valve shaft 23 downward in the figure. As a result, the valve plug 22 comes into contact with the valve seat 21, and the self-powered temperature control valve is closed. The fluid used in the flow path 45 is returned to the upstream side of the inlet of the pipe section 20 by the pipe 70.

If the temperature of the fluid supplied to the flow path 45 is low and the wax does not melt, or if the wax melts, the spring 34,
When the force of 26 overcomes and the valve plug 22 cannot come into contact with the valve seat 21, the self-operated temperature control valve is opened and the fluid flows as shown by the arrow 49.

The temperature setting of the temperature of the fluid for opening the self-powered temperature control valve is performed by changing the mounting position of the adjusting ring 36 and / or the length of the dial limiting pin 39. That is, when the length of the dial limiting pin 39 is fixed and the mounting position of the adjusting ring 36 is moved upward in the drawing, the tip of the diaphragm 42 and the driving shaft 32 are moved.
Since the distance to the tip of the wax becomes large, in order to bring the valve plug 22 and the valve seat 21 into contact with each other, the volume expansion of the wax must be large, and for that reason, the temperature of the fluid is relatively high. It will have to be done. Also, the adjustment ring 36
Is moved downward in the figure, the valve will close at a relatively low temperature according to the above discussion. Obviously, the same applies when the mounting position of the adjusting ring 36 is fixed, the dial limiting pin 39 is replaceable, and its length is changed. It is also apparent that the temperature can be set by adjusting both the mounting position of the adjusting ring 36 and the length of the dial limiting pin 39. Although the above description is for the case of introducing a high temperature fluid to the heat exchanger 4, it is clear that it can be used for introducing a low temperature fluid to the heat exchanger 4.

When the self-powered temperature control valves of the configuration of FIG. 2 are used as the self-powered temperature control valves 5, 6, 7 of FIG. 1, when the fluid temperature is low, the self-powered temperature control valve 5 is used. , 6, 7
Are all open, so the fluid flows through the partial tanks 2 ₁ , 2 _m , 2 _n
Flow into the self-powered temperature control valves 5 and 6
Although the valve plug is not in contact with the valve seat in Fig. 2, the gap between the valve plug and the valve seat is narrowed, so the inflow rate for the partial tanks 2 _m and 2 _n is small compared to the partial tank 2 _1. Yes, the impact is small. When the temperature of the fluid is about the intermediate temperature, the self-powered temperature control valve 7 is closed and the self-powered temperature control valves 5 and 6 are open. At this time, in the self-powered temperature control valve 5, although the valve plug is not in contact with the valve seat, the interval between the valve plug and the valve seat is narrowed, so the partial tank
The inflow rate for 2 _n is small compared to the partial tank 2 _m ,
The impact is small. When the temperature of the fluid is high, the self-powered temperature control valves 6 and 7 are closed and only the self-powered temperature control valve 5 is opened, so that the fluid flows into only the partial tank 2 _n .

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, the height of the partition wall is changed in order to prevent backflow from the partial tank on the high temperature side to the partial tank on the low temperature side, but the height of the partition wall is the same, and the opening provided in the partition wall is the same. The position of may be changed sequentially. Although wax is used in the self-powered temperature control valve shown in FIG. 2, a suitable gas may be used, or a solid having a large expansion coefficient, or the expansion at the transition from the solid phase to the liquid phase is used. Anything that can be used can be used.

Further, it is obvious to those skilled in the art that the fluid is not limited to water and any fluid that can store heat can be used.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of a flat heat storage tank system according to the present invention, FIG. 2 is a sectional view showing a configuration example of a self-powered temperature control valve, and FIG. 3 is a conventional flat heat storage tank. It is a figure which shows the structural example of the cold / hot water system air conditioner which has. 1 ... Flat heat storage tank, 2 ₁ , ..., 2 _m , ..., 2 _n ... Partial tank, 3
...... Pump, 4 …… Heat exchanger, 5,6,7 …… Self-powered temperature control valve, 8,9,10,11,12 …… Piping, 13 …… Partition wall, 14 …… Valve.

Claims (1)

(57) [Scope of utility model registration request] 1. A flat heat storage tank which is divided into a plurality of partial tanks by a partition wall, and a fluid is made to flow through the partial tank from the inlet to the outlet, and the flat heat storage tank A heat exchanger connected to an outlet, a fluid connected between an outlet of the heat exchanger and a plurality of inlets of the flat heat storage tank, and a fluid discharged from the outlet of the heat exchanger. And a plurality of pipes having a self-powered temperature control valve that opens and closes according to the temperature of the flat type heat storage tank system.