JPS6030650Y2 - air conditioning system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air conditioning system that performs cooling or heating by supplying a heat source for supplying a refrigerant or a hot medium to a load-side heat exchanger.

Conventionally, this type of air conditioning system has been constructed as shown in FIG. 1, for example.

1' is a medium mixing tank, and 2 is a heat source for supplying cold water consisting of a chiller for generating cold water, which is connected to the medium mixing tank 1' via a heat source side outgoing pipe 4 and a heat source side returning pipe 5 having a pump 3. ing.

In addition, 6 is a load-side heat exchanger that is installed indoors and forcibly cools or heats indoor air using a fan (not shown), and mixes media through a load-side outgoing pipe 8 and a load-side returning pipe 9' having a pump 7. It is connected to tank 1'.

Note that water is generally used as the medium.

10 is a water supply pipe.

By the way, in the medium mixing tank 1', in order to stabilize the temperature of the medium supplied to the load-side heat exchanger 6, a low temperature medium is supplied from the heat source 2 through the return pipe 6' and from the load-side heat exchanger 6 through the return pipe 9. It is necessary to efficiently mix the relatively high-temperature medium that returns through the medium 1', and for this purpose, conventionally, a baffle plate 11 is provided in the medium mixing tank 1' as shown in the opening in Figure 1, and the mixing tank 1' As a result, the structure of the medium mixing tank 1' becomes complicated, and the capacity is too large to make it compact.

This proposal has been made in view of such drawbacks, and as shown in an embodiment in FIG. By providing 12, the above-mentioned drawbacks have been improved.

In FIG. 2, the same parts as in FIG. 1 are designated by the same reference numerals, and their explanation will be omitted.

Therefore, for example, if the medium temperature of the heat source side outgoing pipe 4 and return pipe 5 is 10°C and 5°C, respectively, and the medium temperature of the load side outgoing pipe 8 and return pipe 9 is 10°C and 15°C, respectively, the conventional method is 15°C.
According to this proposal, mixing must be carried out in the mixing tank 1' with a temperature difference of -5℃=10℃, but according to the present invention, the auxiliary heat exchanger 1
2, the temperature of the medium flowing into the mixing tank 1 from the heat source return pipe 5 is 7.5°C, and the temperature of the medium flowing into the mixing tank 1 from the load side return pipe 6 is 12.5°C, which is 12.5°C- 7.5℃
It is sufficient to mix with a small temperature difference of =5°C.

As a result, even if a baffle plate is installed in the mixing tank 1, the structure can be simplified with a simple structure, the capacity of the mixing tank 1 can be reduced, and the temperature of the medium supplied to the load-side heat exchanger 6 can be reduced. It has great effects, such as making it stable.

Note that the present invention is not limited to the above embodiments, and the heat source may be one that supplies a hot medium such as a boiler.

[Brief explanation of drawings]

FIG. 1A is a diagram of an air conditioning system showing a conventional example, the opening of the figure is an enlarged schematic diagram of the main parts of FIG. 1...Medium mixing tank, 2...Heat source, 4゜8...Outgoing pipe, 5°9...Returning pipe, 6...・Load side heat exchanger, 2...Auxiliary heat exchanger.

Claims (1)

[Scope of utility model registration request] A medium mixing tank, a load-side heat exchanger connected to the mixing tank via a load-side outgoing pipe and a return pipe, and a refrigerant or hot medium supply connected to the mixing tank via a heat source-side outgoing pipe and a return pipe. 1. An air conditioning system characterized by comprising an auxiliary heat exchanger for exchanging heat between a medium in the load side return pipe and a medium in the heat source side return pipe.