JP2781539B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner which can be used for both cooling and heating without switching the set temperature of a temperature control valve.

[0002]

2. Description of the Related Art An air conditioner that circulates a heat medium such as water to heat or cool air with an air conditioner to perform indoor air conditioning (heating and cooling) is widely used.

Conventionally, as shown in FIG. 7, such an air conditioner includes a heat source device a for heating or cooling a heat medium, and an air conditioner for air-conditioning a room s or the like with air heated or cooled by the heat medium. b, and a heat medium passage c for circulating the heat medium through the heat source device a and the air conditioner b, and a bypass passage d and a heat medium passage c provided in the heat medium passage c. A temperature control valve e that detects the temperature of the heat medium and adjusts the amount of the heat medium flowing into the bypass flow path d is provided at the junction where the temperature control valve e crosses.

Therefore, for example, in summer cooling, the temperature control valve e is set to a detection temperature t1 of about 15 ° C., and when the temperature of the heat medium near the detection temperature t1 is detected, the amount of heat medium flowing into the bypass flow path d The heating medium temperature is set to t1 by the adjustment of the temperature, and the set temperature of the temperature control valve e is switched to the detection temperature t2 of about 40 ° C. in the heating in winter, and the detection temperature t2
When the temperature of the heat medium in the vicinity is detected, the temperature of the heat medium is adjusted to t2 by adjusting the amount of the heat medium flowing into the bypass flow path d. This heat medium can be reused.

[0005]

However, in such a conventional air conditioner, it is necessary to switch the detection temperature of the temperature control valve e between summer and winter, and in a general home without an administrator, In addition to being difficult to use, in order to adjust the amount of heat medium flowing into the bypass flow path d so as to reach the detected temperature t1, and to adjust the amount of heat medium flowing into the bypass flow path d so as to reach the detected temperature t2. Requires special piping to change the operation of the temperature control valve e at each detected temperature t1, t2,
There is a problem that the configuration of the entire apparatus is complicated and expensive.

According to the present invention, a temperature control valve for cooling and a temperature control valve for heating are arranged at a junction where a main flow path and a plurality of bypass flow paths intersect, and the setting of the temperature control valve is basically performed. It is an object of the present invention to provide an air conditioner that can cope with both cooling and heating without switching the temperature and that can simplify the entire apparatus.

[0007]

In order to achieve the above object, an air conditioner of the present invention comprises a heat source device for heating or cooling a heat medium and an air conditioner for air conditioning with air heated and cooled by the heat medium. A plurality of bypass flow paths are provided in the main flow path that circulates the heat medium as described above, and at a junction where the main flow path and the bypass flow path intersect, the temperature of the heat transfer medium is detected so as to reach a predetermined temperature. A cooling liquid or gas expansion type temperature control valve for adjusting the heat medium inflow amount, and a heating liquid or a heating liquid for adjusting the heat medium inflow amount to the bypass flow passage so as to detect the heat medium temperature and reach a predetermined temperature. A gas expansion type temperature control valve is provided.

It is desirable to provide a plurality of the temperature control valves in series on the outgoing or returning path of the main flow path, in that the switching between cooling and heating and the temperature control can be performed without using any power such as electricity.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, an air conditioner 1 of the present invention has a main flow path for circulating the heat medium through a heat source device 2 for heating or cooling the heat medium and an air conditioner 3 for air conditioning with air heated and cooled by the heat medium. 4, a plurality of bypass flow paths 5A, 5B are provided, and cooling sections 7A, 6B where the main flow path 4 intersects the bypass flow paths 5A, 5B are provided with a cooling temperature control valve 7A and a heating temperature control valve 7B. And are arranged.

The heat source device 2 can selectively heat or cool the heat medium such as water, and adjusts the heat medium temperature by a suitable control device.

The air conditioner 3 includes a fan 1 for blowing air.
5 and a heat exchanger 16 for heating or cooling the air by a heat medium flowing through the main flow path 4.

The main flow path 4 includes an outgoing path 9 for sending the heat medium from the heat source device 2 to the heat exchanger 16 of the air conditioner 3 using a pump or the like, and a heat medium after the heat exchange in the air conditioner 3. And a return path 10 for returning to the heat source device 2.

A plurality of, in this embodiment, two, bypass passages 5A, 5A are provided between the outgoing passage 9 and the return passage 10 of the main passage 4.
B is erected, and the outgoing passage 9 and the bypass passage 5A
A temperature control valve 7A for cooling is provided at a converging portion 6A where the air flow passes, and a temperature control valve 7B for heating is provided at a converging portion 6B where the outgoing path 9 and the bypass flow path 5B cross.

As described above, in this embodiment, a plurality (two) of the temperature control valves 7A and 7B are provided in series with the outgoing path 9 of the main flow path 4.

The cooling temperature control valve 7A flows through the return path 10 on the air conditioner 3 side from the return path 10 and branches 6a and 6b where the return paths 10 intersect with the bypass paths 5A and 5B. It has a temperature sensing part 12A for detecting the temperature of the heat medium, and an oil sealed in the temperature sensing part 12A.
It uses an explosion-proof three-way valve of autonomous proportional control type driven by expansion of liquid or gas such as wax.
The set temperature of 2A is set in the range of 10C to 20C, for example, 15C.
° C (hereinafter referred to as a predetermined temperature TA).

Since the liquid or gas expansion type temperature control valve is used as described above, maintenance can be performed by inspecting the valve section and the like, and the durability can be improved. Can be easily selected for the set temperature.

The temperature control valve 7A for cooling is provided with
2A detects the temperature of the heat medium and adjusts the flow rate of the heat medium into the bypass flow path 5A so as to reach the predetermined temperature TA. Send to

The heating temperature control valve 7B also uses a liquid or gas expansion type autonomous proportional control type three-way valve, and controls the temperature of the heat medium in the return path 10 and the air conditioner 3 in the branch portions 6a and 6b. The temperature sensing section 12B for detecting the temperature at the side is provided, and the set temperature is set in a range of 35 ° C. to 45 ° C., for example, 40 ° C. (hereinafter, referred to as a predetermined temperature TB).

The temperature control valve 7B for heating is connected to the temperature sensing section 1
2B detects the temperature of the heat medium and adjusts the amount of heat medium flowing into the bypass flow path 5B so as to reach the predetermined temperature TB. The heat medium flows through the bypass flow path 5B to the air conditioner 3 from the path 9. send.

In such an air conditioner 1, the heat medium cooled by the heat source device 2 in summer or the like passes through the outgoing path 9 of the main flow path 4 and the temperature control valves 7A and 7B for cooling and heating. The cooling medium is sent to the air conditioner 3 and cools the air from the fan 15 to blow the air into the room S or the like, and also controls the amount of the heat medium flowing into the bypass passage 5A so as to reach the predetermined temperature TA. The temperature is controlled by the temperature control valve 7A and sent to the air conditioner 3 again at the predetermined temperature TA (the flow of the heat medium at this time is indicated by an arrow in FIG. 1).

Since the heating temperature control valve 7B detects a temperature of the heat medium considerably lower than a predetermined temperature TB at which the heat medium can flow into the bypass passage 5B, the temperature sensing portion 12B detects the temperature. The inflow of the heat medium into the bypass flow path 5B is naturally prevented, and the heat medium flows through the outgoing path 9 alone without adjusting the amount of the heat medium.

In the winter or the like, the heat medium heated by the heat source device 2 is sent to the air conditioner 3 through the outgoing path 9 to heat the air from the fan 15 and blow this air into the room S or the like. At the same time, the amount of heat medium flowing into the bypass flow path 5B is adjusted by the heating temperature control valve 7B so as to reach the predetermined temperature TB, and is sent to the air conditioner 3 again at the predetermined temperature TB (the heat medium at this time). The flow is indicated by the arrow in FIG. 2).

The temperature control valve 7A for cooling uses the temperature sensing portion 12A to detect a temperature of the heat medium considerably higher than a predetermined temperature TA at which the heat medium can flow into the bypass passage 5A. The heat medium is naturally prevented from flowing into the bypass flow path 5A, and the heat medium is allowed to flow as it is in the outgoing path 9 without adjusting the amount of the heat medium.

As described above, the temperature control valve 7 for cooling and heating is used.
A and 7B can be used without switching the set temperature at the time of cooling and heating, and the usability can be improved. Further, since the temperature control valves 7A and 7B for cooling and heating are arranged in series with the outgoing path 9 of the main flow path 4, Switching at the time of cooling and heating can be performed without using any power such as electricity.

The cooling and heating temperature control valves 7A, 7A
B, the branch portions 6a, 6b of the return path 10 of the main flow path 4.
May be provided. Further, each of the temperature sensing sections 12A and 12B can detect the temperature of the heat medium in the heat exchanger 16 and also can detect the temperature of the air blown into the room S.

FIGS. 3 and 4 show another embodiment of the present invention. In this embodiment, the main flow path 4 is connected to the electric source 3 from the heat source device 2.
The first reaching the heat exchanger 17 of the air conditioner 3 via the one-way valve 19
A first main flow path 40 including a first return path 27 returning to the heat source device 2 from the first return path 23 via the electric three-way valve 20, and a heat storage tank for storing a heat medium. A second outgoing route 24 from 21 to the heat exchanger 16 of the air conditioner 3
And a second main flow path 41 having a second return path 29 returning from the heat exchanger 16 to the heat storage tank 21.

The main flow path 4 is provided with the electric three-way valve 19.
A first distribution path 43 from the heat storage tank 21 to the heat storage tank 21 and a second distribution path 44 from the heat storage tank 21 to the electric three-way valve 20 are provided, whereby the first outgoing path 23 and the second
Is connected to the outgoing route 24 (the first and second outgoing routes 23,
24 are collectively referred to as outgoing path 9), and the first return path 27 and the second return path 29 are connected (first and second paths).
Return paths 27 and 29 are collectively referred to as return path 10).

Further, two bypass passages 5A and 5B are provided between the second outgoing path 24 of the outgoing path 9 and the second return path 29 of the return path 10, and the second outgoing path 5A Gathering part 6 where path 24 and bypass flow paths 5A and 5B intersect
A and 6B are provided with a temperature control valve 7A for cooling and a temperature control valve 7B for heating similar to the embodiment shown in FIG. The temperature of the heat medium in the second return path 29 is detected by the respective temperature sensing sections 12A and 12B of 7B.

The air conditioner 1 air-conditions the heat exchanger 17 with the heated or cooled heat medium passing through the first main flow path 40 in the daytime or the like, and when the air conditioner 3 is not operated. , The electric three-way valve 1 from the heat source device 2
9. The heated or cooled heat medium is sent to the heat storage tank 21 through the first distribution path 43, and the heat medium is stored in the heat storage tank 21. Furthermore, when the heat source device 2 is not used, the heat storage tank 2
The heat medium stored in 1 is passed through the second main flow path 41 and is air-conditioned by the heat exchanger 16.

Also in this embodiment, since the second main flow path 41 is provided with cooling and heating temperature control valves 7A and 7B, it is possible to cope with both cooling and heating without switching the respective set temperatures. FIG. 3 shows an embodiment in summer and the like, and FIG. 4 shows an embodiment in winter and the like.

FIGS. 5 and 6 show still another embodiment of the present invention. In the present embodiment, the main flow path 4 includes a passage 9 extending from the heat source device 2 to the heat exchanger 16 of the air conditioner 3 and a return passage 10 returning from the heat exchanger 16 to the heat source device 2. Two bypass passages 5A and 5B are provided between the return passage 9 and the return passage 10.

A temperature control valve 7A for cooling and a temperature control valve 7B for heating are provided in parallel on the way 9 and the bypass flow paths 5A and 5B are respectively connected to the temperature control valves 7A and 7B. Connected. Therefore, cooling and heating temperature control valves 7A and 7B are provided at the junctions 6A and 6B where the outgoing path 9 of the main flow path 4 and the bypass flow paths 5A and 5B intersect.

Such an air conditioner 1 controls the temperature of the heat medium passing through the return path 10 in summer or the like by controlling the temperature of the cooling temperature control valve 7A.
The temperature of the heat medium is detected by the temperature sensing portion 12A of the predetermined temperature T.
A, the amount of the heat medium is adjusted so that
The heat medium is caused to flow into A, and the heat medium is again sent to the air conditioner 3 through the electric three-way switching valve 13 (the flow of the heat medium at this time is indicated by an arrow in FIG. 5).

In winter, etc., by detecting the temperature of the heat medium of the temperature sensing portion 12B of the temperature control valve 7B for heating, the amount of the heat medium is adjusted so that the temperature of the heat medium 12B becomes a predetermined temperature TB. The heat medium flows into the passage 5B, and is sent to the air conditioner 3 again through the electric three-way switching valve 13 (the flow of the heat medium at this time is indicated by an arrow in FIG. 6).

Accordingly, the temperature control valve 7 for cooling and heating is used.
It is possible to cope with both cooling and heating without switching the set temperatures of A and 7B.

In the present invention, three or more bypass passages may be provided, and accordingly, the number of temperature control valves may be three or more.

[0037]

As described above, in the air conditioner of the present invention, a plurality of bypass passages are provided in the main passage for circulating the heat medium through the heat source device and the air conditioner, and the main passage intersects the bypass passage. A temperature control valve for cooling, which detects the temperature of the heat medium and adjusts the amount of heat medium flowing into the bypass flow passage so as to reach a predetermined temperature, and a bypass flow which detects the temperature of the heat medium to reach the predetermined temperature. A heating temperature control valve for controlling the amount of heat medium flowing into the road is provided. Therefore, in summer or the like, the temperature control valve for cooling is used, and in winter or the like, the temperature control valve for heating is used for both cooling and heating without switching the set temperature of each temperature control valve. In addition to being able to efficiently control the amount of heat and control the temperature, the temperature control valves for cooling and heating are different from those using a single temperature control valve as in the past. There is no need to devise a device, and the configuration of the device can be simplified.

Further, since the cooling and heating temperature control valves are of a liquid or gas expansion type, they can be installed at a low cost, can reduce the initial cost of the entire apparatus, and do not require any special maintenance, so that the durability is high. It is possible to provide a device excellent in performance.

Further, in the invention according to claim 2, when a plurality of the temperature control valves are provided in series on the outward or return path of the main flow path, for example, an electric motor for selecting each temperature control valve is provided.
The air conditioner can be switched and the temperature can be controlled without using any power such as electricity without the need for a direction switching valve or the like.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an embodiment of the present invention.

FIG. 3 is a diagram showing another embodiment of the present invention.

FIG. 4 is a diagram showing another embodiment of the present invention.

FIG. 5 is a diagram showing an example in which temperature control valves are provided in parallel.

FIG. 6 is a diagram showing an example in which temperature control valves are provided in parallel.

FIG. 7 is a diagram for explaining a conventional technique.

[Explanation of symbols]

 2 Heat source device 3 Air conditioner 4 Main flow path 5A, 5B Bypass flow path 6A, 6B Gathering part 7A, 7B Temperature control valve 9 Outgoing path 10 Return path

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshio Tomiya 3-3-22 Nakanoshima, Kita-ku, Osaka-shi, Osaka Inside Kansai Electric Power Company (56) References JP-A-6-74495 (JP, A) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) F24F 5/00 101

Claims (2)

(57) [Claims] A plurality of bypass flow paths are provided in a main flow path for circulating the heat medium through a heat source device for heating or cooling the heat medium and an air conditioner for air conditioning with air heated and cooled by the heat medium. At the junction where the main flow path and the bypass flow path intersect, a liquid or gas expansion type temperature control for cooling that detects the temperature of the heat medium and adjusts the flow amount of the heat medium into the bypass flow path so as to reach a predetermined temperature. An air conditioner comprising a valve and a heating liquid or gas expansion type temperature control valve for detecting a temperature of a heat medium and adjusting an amount of heat medium flowing into a bypass passage so as to reach a predetermined temperature. 2. The temperature control valve according to claim 1, wherein the plurality of temperature control valves are provided in series on a going or returning path of a main flow path.
An air conditioner as described.