JP2506874Y2 - Air conditioner - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an air conditioner, and in particular, a refrigerator unit equipped with a water heat exchanger and a heat exchanger on the use side are connected by a water pipe. The present invention relates to an air conditioner capable of forming a water circulation path, cooling or heating, and having a heat storage tank to store heat and release heat to the water circulation path.

[Conventional technology]

Conventionally, as described above, a refrigerator unit provided with a water heat exchanger and a utilization side heat exchanger are connected by a water pipe to form a water circulation path, which enables cooling or heating, and a heat storage tank. As an air conditioner including the above and capable of storing heat and releasing heat to the water circulation path, for example, the one disclosed in Japanese Utility Model Laid-Open No. 59-167368 is known.

FIG. 6 shows an air conditioner disclosed in this publication, and this air conditioner includes at least a refrigerator unit 13 having a water heat exchanger 11 and a use side heat exchanger 15. An air conditioner capable of cooling or heating by forming a water circulation path 21 by connecting with a water pipe 19 having one water circulation pump 17, wherein the use side heat exchanger 15 is provided in the water circulation path 21. A bypass pipe 25 having an on-off valve 23 that bypasses is provided, and a water-to-water heat exchanger 27 is provided on the downstream side of the downstream side connection portion of the bypass pipe 25, while a low temperature tank portion 29 and a high temperature tank that communicate with each other. A heat storage tank 33 having a portion 31 and a first heat exchange circuit 35 that returns from the low temperature tank portion 29 to the high temperature tank portion 31 via the water-to-water heat exchanger 27 in the heat storage tank 33; High temperature tank section
The second heat exchange circuit 37 returning from 31 to the low temperature tank section 29 via the water to water heat exchanger 27, and each of these heat exchange circuits 35, 37 by giving a flow of water to the water to water heat exchanger. At least one heat storage tank pump 39 for operating 27 is provided, the refrigerator unit 13, the water circulation pump 17 and the heat storage tank pump 39 are driven, and the heat storage operation performed by opening the on-off valve 23 is performed at midnight power. The operation is controlled as is done in.

In such an air conditioner, the heat storage tank 33 is provided independently of the water circulation path 21 including the refrigerator unit 13 and the use side heat exchanger 15, and the heat storage tank 33 is a low temperature tank communicating with each other. Since the structure is provided with the portion 29 and the high temperature tank portion 31, and further, the heat storage is performed when the cooling or heating operation by the use side heat exchanger 15 is stopped, the heat storage capacity with respect to the amount of water is increased, In addition, the water-to-water heat exchanger 27 that exchanges heat with the circulating water in the water circulation path 21 can be downsized, and moreover, it is possible to store heat at a low cost by using late-night power.

[Problems to be solved by the device]

However, in such a conventional air conditioner,
Since the refrigerator unit 13 as a heat source and the use side heat exchanger 15 are connected in series, for example, when performing heat storage / radiation simultaneous operation when overtime operation is requested, the temperature on the heat storage tank 33 side is arbitrarily set. Since there is a change, there is a problem that uniform heat storage becomes difficult.

Further, when the operation is performed only by radiating heat from the heat storage tank 33, there is a problem in that, for example, dehumidification becomes difficult due to insufficient cold water temperature, and the air conditioning state may become poor.

The present invention has been made to solve such conventional problems, and provides an air conditioner capable of reliably and efficiently performing various operations such as heat storage operation, heat radiation operation, and heat storage / heat radiation simultaneous operation. With the goal.

[Means for solving the problem]

An air conditioner according to the present invention comprises a refrigerator unit equipped with a water heat exchanger and a refrigerator unit pipeline forming a circulation path in which a water-to-water heat exchanger is arranged, and a refrigerator unit pipeline of this refrigerator unit pipeline. A utilization side heat exchanger conduit in which one end is branched from the upstream side of the water to water heat exchanger and the other end is connected to the downstream side of the water to water heat exchanger, and the utilization side heat exchanger is arranged, and this utilization An on-off valve arranged in the side heat exchanger line and a utilization side heat exchanger in the refrigerator unit line, with one end branched off from the water-to-water heat exchanger downstream side of the refrigerator unit line A bypass pipe line connected to the upstream side of the one end branch portion of the pipe line, in which a variable flow pump is arranged, and a heat storage tank side pipe line in which water in the heat storage tank is circulated and the water-to-water heat exchanger is arranged, A circulation pump disposed in the heat storage tank side pipe is provided.

[Action]

In the air conditioner of the present invention, in the heat storage operation, the refrigerator unit in the refrigerator unit pipeline is operated and the water is circulated in the refrigerator unit pipeline with the opening / closing valve of the utilization side heat exchanger pipeline closed. On the other hand, the circulation pump arranged in the heat storage tank side pipe is operated to circulate the water in the heat storage tank side pipe, and the low temperature water in the refrigerator unit pipe in the water-to-water heat exchanger and the heat storage This is performed by exchanging heat with high temperature water in the tank-side conduit.

Also, in the heat radiation operation, with the on-off valve of the utilization side heat exchanger pipeline open, the refrigerator unit in the refrigerator unit pipeline and the variable flow rate pump in the bypass pipeline are activated to operate the refrigerator unit pipeline and bypass. The water is circulated in the pipeline, while the circulation pump arranged in the pipeline on the heat storage tank side is operated to circulate the water in the pipeline on the heat storage tank side, and the temperature of the pipeline on the heat storage tank side in the water-to-water heat exchanger. Is performed by exchanging heat between the low temperature water and the high temperature water in the bypass line.

Furthermore, in the heat storage / radiation operation, with the opening / closing valve of the utilization side heat exchanger conduit open, the refrigerator unit in the refrigerator unit conduit is operated to circulate water in the refrigerator unit conduit, while
Operates the circulation pump arranged in the heat storage tank side pipe, circulates water in the heat storage tank side pipe, water with high temperature in the heat storage tank side pipe in the water-to-water heat exchanger, and the refrigerator unit pipe Is performed by exchanging heat with water having a low temperature.

In the scheduled adjustment contract operation, the refrigerator unit in the refrigerator unit line is stopped, the variable flow rate pump in the bypass line is activated, and the bypass pipe Water is circulated through the pipe and the refrigerator unit pipeline, while the circulation pump arranged in the heat storage tank side pipeline is operated to circulate the water in the heat storage tank side pipeline, and the heat storage tank in the water-to-water heat exchanger. This is performed by exchanging heat between the water having a low temperature in the side pipeline and the water having a high temperature in the refrigerator unit pipeline.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the air conditioner of the present invention. In the figure, reference numeral 41 indicates a refrigerator unit equipped with a water heat exchanger (not shown).

The refrigerator unit 41 is arranged in a refrigerator unit pipeline 43 forming a circulation path, and a water-to-water heat exchanger 45 is arranged in the refrigerator unit pipeline 43.

A utilization side heat exchanger pipeline 47 is arranged by branching one end from the upstream side of the water-to-water heat exchanger 45 of the refrigerator unit pipeline 43, and the other end of the utilization side heat exchanger pipeline 47. Is connected to the refrigerator unit pipeline 43 on the downstream side of the water-to-water heat exchanger 45.

That is, the water-to-water heat exchanger 45 of the refrigerator unit pipeline 43
A plurality of branch pipes 49 branching from the refrigerator unit pipeline 43 are arranged on the upstream side of each of the branch pipes 49.
A utilization-side heat exchanger 51 is disposed in the, and an opening / closing valve 53 is disposed downstream of the utilization-side heat exchanger 51.

The downstream sides of these on-off valves 53 are collected in the utilization side heat exchanger pipe line 47.

Further, a plurality of branch pipes 57 branched from the branch pipe 55 are arranged in the most upstream branch pipe 55, and a fan coil unit 59 is arranged in each of the branch pipes 57. On-off valve 61 is located downstream of unit 59.
Is arranged.

The downstream sides of these on-off valves 61 are collected in the utilization side heat exchanger pipe line 47.

In the figure, reference numeral 63 indicates, for example, a bypass pipe in which a variable flow pump 65 composed of an inverter pump is arranged. The bypass pipe 63 is a refrigerator unit pipe 43.
One end is branched from the downstream side of the water-to-water heat exchanger 45, and the other end is connected to the branch pipe 55 upstream side in the refrigerator unit pipeline 43.

In addition, the user side heat exchanger line 47 and the refrigerator unit line 43
A connecting pipe 67 is arranged to connect the downstream side of the water-to-water heat exchanger 45.

In the figure, reference numeral 69 is a pump, reference numeral 71 is an on-off valve, and reference numeral 73 is an expansion tank.

On the other hand, in the figure, reference numeral 75 indicates a heat storage tank, and this heat storage tank 75 has a circulation pump for circulating the water in the heat storage tank 75.
A heat storage tank side pipe 79 including 77 is formed.

In the heat storage tank side pipe 79, the above-mentioned water-to-water heat exchanger 45
Is arranged.

That is, the upstream end and the downstream end of the heat storage tank side pipeline 79 are
Each of the heat storage tanks 75 is opened on the high temperature side.

Further, a bypass pipe 81 is arranged to bypass the circulation pump 77 of the heat storage tank side pipe 79, and the bypass pipe 81 has
For example, a variable flow rate pump 83 including an inverter pump is arranged.

Bypass pipes 81 of the heat storage tank side pipe 79 are branched from the upstream side and the downstream side of the water-to-water heat exchanger 45, and branch pipes 85 and 87 that are open to the low temperature side of the heat storage tank 75 are arranged. There is.

In the figure, reference numeral 89 indicates an on-off valve.

In the air conditioner configured as described above, for example,
In the heat storage operation at night, as shown in FIG. 2, one refrigerator unit 41 of the refrigerator unit pipeline 43 is operated with the opening / closing valves 53 and 61 of the utilization side heat exchanger pipeline 47 closed. Then, one circulation pump 69 circulates water in the refrigerator unit pipeline 43, while operating the circulation pump 77 arranged in the heat storage tank side pipeline 79 to circulate the water in the heat storage tank side pipeline 79. Water-to-water heat exchanger
In 45, the low temperature water in the refrigerator unit pipeline 43 and the high temperature water in the heat storage tank side pipeline 79 are heat-exchanged.

In the figure, the thick line indicates the flow of water in this heat storage operation. In this heat storage operation, only one of the two refrigerator units 41 is used, and the heat storage tank 75 The water on the high temperature side passes through the heat storage tank side pipe 79, is heat-exchanged by the water-to-water heat exchanger 45, and then is circulated to the low temperature side of the heat storage tank 75.

Further, for example, in the daytime heat radiation operation, as shown in FIG. 3, with the open / close valves 53 and 61 of the utilization side heat exchanger conduit 47 open, the refrigerator unit 41 and the refrigerator unit 41 of the refrigerator unit conduit 43 are opened. The variable flow rate pump 65 of the bypass pipeline 65 is operated to circulate water in the refrigerator unit pipeline 43 and the bypass pipeline 63, while the variable flow pump is arranged in the bypass pipeline 81 of the heat storage tank side pipeline 79. Operate 83, circulate water in the heat storage tank side pipe 79,
In the water-to-water heat exchanger 45, the low temperature water in the heat storage tank side pipe 79 is exchanged with the low temperature water flowing in the connecting pipe 67 and the bypass pipe 63.

In the figure, the thick line shows the flow of water in this heat radiation operation. In this heat radiation operation, the two variable flow units 65 of the refrigerator units 41 and the bypass pipe 63 are operated, and the low temperature of the heat storage tank 75 is lowered. The water on the side passes through the heat storage tank side pipe 79, undergoes heat exchange in the water-to-water heat exchanger 45, and then is circulated to the high temperature side of the heat storage tank 75.

Furthermore, for example, during nighttime storage and heat dissipation operation such as overtime work,
As shown in FIG. 4, the on-off valve 5 of the utilization side heat exchanger pipe 47
With 3,61 open, the refrigerator unit 41 of the refrigerator unit pipeline 43 is operated to circulate water in the refrigerator unit pipeline 43, while the circulation pump arranged in the heat storage tank side pipeline 79. Activates 77, circulates water in the heat storage tank side pipe 79, and heats the water-to-water heat exchanger.
In 45, the high temperature water in the heat storage tank side pipeline 79 and the low temperature water in the refrigerator unit pipeline 43 are heat-exchanged.

In the figure, the thick line indicates the flow of water in this heat storage / radiation operation. In this heat storage / heat radiation operation, the two refrigerator units 41 are activated, the variable flow rate pump of the bypass line 65 is stopped, and the heat storage tank Water on the high temperature side of 75 passes through the heat storage tank side pipe 79, is heat-exchanged by the water-to-water heat exchanger 45, and then is circulated on the low temperature side of the heat storage tank 75.

Then, for example, in the daytime regular adjustment contract operation by contract with the electric power company, as shown in FIG. 5, the refrigerator unit pipe is opened with the opening / closing valves 53 and 61 of the use side heat exchanger pipe 47 opened. The refrigerator unit 41 in the line 43 is stopped, the flow rate variable pump 65 in the bypass line 63 is operated, and water is circulated in the bypass line 63 and the refrigerator unit line 43, while the heat storage tank side line is
The circulation pump 77 and the variable flow rate pump 83 arranged in 79 are operated to circulate water in the heat storage tank side pipe 79, and the water-to-water heat exchanger
In 45, the low temperature water in the heat storage tank side pipeline 79 and the high temperature water in the refrigerator unit pipeline 43 are heat-exchanged.

The thick line in the figure indicates the flow of water in this scheduled adjustment contract operation. In this scheduled adjustment contract operation, the two refrigerator units 41 are stopped and the variable flow rate pump 65 in the bypass line 63 is operated. The water on the low temperature side of the heat storage tank 75 passes through the heat storage tank side pipe 79, is heat-exchanged by the water-to-water heat exchanger 45, and then is circulated to the high temperature side of the heat storage tank 75.

Thus, in the air conditioner configured as described above, the device is a refrigerator unit pipe in which the refrigerator unit 41 having the water heat exchanger and the water water heat exchanger 45 are arranged to form a circulation path. One end is branched from the upstream side of the water-to-water heat exchanger 45 of the line 43 and the refrigerator unit pipeline 43, and the other end is connected to the downstream side of the water-to-water heat exchanger 45, and the use-side heat exchanger 51. Of the use side heat exchanger pipe 47, the opening / closing valve 53 arranged in the use side heat exchanger pipe 47, and the downstream of the water-to-water heat exchanger 45 of the refrigerator unit pipe 43. From one side and the other end is connected to the upstream side of the one end branch of the utilization side heat exchanger pipe 47 in the refrigerator unit pipe 43 and the bypass pipe 63 in which the variable flow rate pump 65 is arranged, and the heat storage tank. The heat storage tank side pipe 79 in which the water in 75 is circulated and the water-to-water heat exchanger 45 is arranged, and the heat storage tank side pipe 79 is arranged in the heat storage tank side pipe 79. Circulating pump
Since it is composed of 77, various operations such as heat storage operation, heat radiation operation, and heat storage / heat radiation simultaneous operation can be performed reliably and efficiently.

That is, in the air conditioner configured as described above, the refrigerator unit pipeline in which the refrigerator unit 41 is arranged is arranged.
Since the use-side heat exchanger pipe line 47 in which the use-side heat exchanger 51 is arranged is arranged in parallel with respect to 43, the valves are switched according to various operating states, the refrigerator unit 41 and the pumps 65, 69,
By operating 77, 83, etc., various operations can be performed reliably and efficiently.

Further, in the air conditioner configured as described above, since the bypass pipe line 63 in which the variable flow rate pump 65 is arranged is provided, it is possible to select the heat source and the carrier power according to the load, and reduce the running cost. It is possible to plan.

Furthermore, in the air conditioner configured as above,
The air conditioning environment can be appropriately maintained even when only the heat radiation operation by the heat storage tank 75 is performed.

Further, the construction cost does not significantly increase as compared with the conventional air conditioner.

[Effect of device]

As described above, in the air conditioner of the present invention, a device is provided with a refrigerator unit having a water heat exchanger and a refrigerator unit pipe line in which the water heat exchanger is arranged to form a circulation path, A utilization side heat exchanger in which one end is branched from the upstream side of the water-to-water heat exchanger and the other end is connected to the downstream side of the water-to-water heat exchanger in the refrigerator unit pipe and the utilization-side heat exchanger is arranged. And a switching valve arranged in the utilization side heat exchanger pipeline, one end is branched from the downstream side of the water-to-water heat exchanger of the refrigerator unit pipeline, and the other end is a refrigerator unit tube. A bypass pipe connected to the upstream side of the one end branch of the utilization side heat exchanger pipe in which the variable flow rate pump is arranged, and water in the heat storage tank for circulating the water-to-water heat exchanger. It consisted of a heat storage tank side pipe and a circulation pump arranged in this heat storage tank side pipe. , Thermal storage operation, radiating operation, ensures various operation the heat storage and release simultaneous operation or the like, and can be advantageously carried out efficiently.

[Brief description of drawings]

FIG. 1 is a piping system diagram showing an embodiment of the air conditioner of the present invention. FIG. 2 is a piping system diagram showing a state during heat storage operation of the air conditioner of FIG. FIG. 3 is a piping system diagram showing a state during heat dissipation operation of the air conditioner of FIG. FIG. 4 is a piping system diagram showing a state during the heat storage / radiation operation of the air conditioner of FIG. 1. FIG. 5 is a piping system diagram showing a state of the air-conditioning apparatus of FIG. 1 during a scheduled adjustment contract operation. FIG. 6 is a piping system diagram showing a conventional air conditioner. [Explanation of symbols of main parts] 41 ... Refrigerator unit 43 ... Refrigerator unit pipeline 45 ... Water-to-water heat exchanger 47 ... Utilization side heat exchanger duct 51 ... Utilization side heat exchanger 53 ... Open / close valve 63 … Bypass line 65… Variable flow pump 75… Heat storage tank 77… Circulation pump 79… Heat storage tank side line.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiko Fukushima 8-21 Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Main Store (72) Inventor Ryohei Hatano 8-21 Ginza, Chuo-ku, Tokyo No. Stock Company Takenaka Corporation Tokyo Main Store

Claims (1)

(57) [Scope of utility model registration request] 1. A refrigerator unit having a water heat exchanger and a refrigerator unit pipe in which a water heat exchanger is arranged to form a circulation passage, and the water-to-water heat of the refrigerator unit pipe. A utilization side heat exchanger pipe in which one end is branched from the upstream side of the exchanger and the other end is connected to the downstream side of the water-to-water heat exchanger, and the utilization side heat exchanger is arranged, and this utilization side heat exchanger pipe An on-off valve disposed in the channel and one end of the utilization side heat exchanger pipeline in the refrigerator unit pipeline with one end branched from the downstream side of the water-to-water heat exchanger of the refrigerator unit pipeline A bypass pipe line which is connected to the upstream side of the branch portion and in which a variable flow rate pump is arranged, a heat storage tank side pipe in which water in the heat storage tank is circulated and the water-to-water heat exchanger is arranged, and this heat storage tank side pipe An air conditioner comprising: a circulation pump arranged on a road.