JPH0116988Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an air conditioner for air conditioning a living space using multiple water source heat pump devices (hereinafter referred to as air conditioners). In particular, it facilitates maintenance of air conditioners, reduces noise, and expands the variety of indoor unit models.

[Conventional technology]

Figure 5 shows a conventional air conditioner arrangement diagram when an air conditioner is configured by arranging multiple air conditioners in the residential area of a building. The living area 1 is divided into a plurality of rooms 1a. Further, in each room 1a of the living area 1, the number of air conditioners 3 according to the size of the room is arranged as required, and each of the air conditioners 3 in each room 1a facing each other with the non-living area 2 in between is arranged. The air conditioners 3 are connected in parallel by water pipes 4, and each water pipe 4 is connected to a water heat source system through another water pipe 4a.

Fig. 6 schematically shows the details of the connection between the air conditioner 3 and the water heat source system. It is connected to a heat storage tank 8 and a cooling tower 9 having an auxiliary heat source 8a via the heat storage tank 8 and a cooling tower 9, and a water supply pump 5 circulates water between the heat storage tank 8 and/or the cooling tower 9 and each air conditioner 3.

FIG. 7 shows an internal configuration diagram of the air conditioner 3, which is composed of a compressor 10, a four-way valve 11, a water side heat exchanger 12, an air side heat exchanger 13, a throttle valve 14, and a blower 15. and the compressor 1
0, the four-way valve 11, each heat exchanger 12, 13, and the throttle valve 14 are connected in series through a refrigerant passage 16, forming a refrigerant cycle.

In the air conditioner having the above configuration, the water-side heat exchanger 12 exchanges heat between the refrigerant and water, the air-side heat exchanger 13 exchanges heat between the refrigerant and indoor air, and the four-way valve 11 By switching, the flow direction of the refrigerant can be changed, which allows it to be used for both cooling and heating.

In other words, the refrigerant flows in the direction of arrow A, and the compressor 10
- Four-way valve 11 - Water side heat exchanger 12 - Throttle valve 14 -
When the air-side heat exchanger 13 - four-way valve 11 - compressor 10 is circulated in this order, the water-side heat exchanger 12, through which the high-pressure and high-temperature refrigerant discharged from the compressor 10 flows, functions as a water-cooled condenser and cools the air. The air-side heat exchanger 13, through which the low-pressure, low-temperature refrigerant flows, functions as an air cooler and is therefore in cooling operation.

Furthermore, when the refrigerant is circulated in the direction of arrow B in the opposite direction to the above, the water side heat exchanger 12 functions as a cooler and the air side heat exchanger 13 functions as an air heater, resulting in heating operation.

[Problem that the invention attempts to solve]

In the conventional air conditioner as described above, the air conditioner 3 is installed in the ceiling of the living area 1 in the form of a ceiling-embedded cassette, and the ceiling has a decorative panel equipped with an air outlet and an air inlet. is provided.

However, in the conventional air conditioner 3, the sixth and seventh
As shown in the figure, a compressor 10, a water side heat exchanger 12, an air side heat exchanger 13, and a blower 1 are installed inside the main body.
Since all the 5th class components were built-in, the internal structure was complicated and the shape could not be changed to match the interior of the room.

In addition, low frequency sound from the compressor 10 was transmitted through the ceiling, causing a noise problem.

Furthermore, since this type of air conditioner generally uses a water source heat pump type, water may leak from the water pipes 4 and drain pipes installed in the living area 1, which may affect the interior of the room. There was a problem.

This idea was made to solve these problems, and aims to make maintenance of air conditioners easier and reduce noise, and to expand the variety of indoor unit models and installation locations. The purpose is to provide an air conditioner with

[Means for solving problems]

In the air conditioner of this invention, a condensing unit with a built-in water side heat exchanger and a compressor is installed in a non-residential area, and an indoor unit with a built-in air side heat exchanger and a blower is installed in a residential area. , this unit and the indoor unit are connected by refrigerant piping.

[Effect]

In this design, only the indoor unit with the air-side heat exchanger and blower is placed in the living area separately from the condensing unit, so there is no problem with the noise caused by the low-frequency operating sound of the compressor in the living area. To provide flexibility in the installation location and type of indoor unit in the living area, and to completely eliminate troubles and maintenance caused by water leakage in the living area.

[Embodiment] An embodiment of this invention will be described below with reference to FIGS. 1 to 4.

Figures 1 and 2 show the arrangement system of the air conditioners constituting the air conditioner of this invention. A number of condensing units 20 are installed, and these condensing units 20 are connected in parallel to water pipes 21, and the water pipes 21 are connected via a water supply pump 5 and a solenoid valve 6 or 7 as shown in FIG. is connected to a heat storage tank 8 or a cooling tower 9 constituting a water circuit,
Further, the condensing unit 20 includes a fourth condensing unit 20.
As shown in the figure, it is composed of a compressor 10, a water side heat exchanger 12, and a four-way valve 11.

In addition, in each room 1a of the living area 1 in the building,
1 corresponding to each condensing unit 20 above.
One or more indoor units 22 are installed, and these indoor units 22 are connected to corresponding condensing units 20 by refrigerant pipes 23. The indoor unit 22 has an air side heat exchanger 1 as shown in FIG.
3. It is composed of a throttle valve 14 and a blower 15, and the number and model thereof are set according to the interior of the room, the installation location, the capacity of the indoor space, etc.
For example, the indoor units 22 installed on the ceiling, window side, and floor on the non-residential side of the room have different types and shapes, as shown in FIG. 2.

In the air conditioner configured as described above, as shown by arrow A in FIG. - If the refrigerant piping 23 - the four-way valve 11 - the compressor 10 are circulated in this order, the water-side heat exchanger 12 through which the high-temperature, high-pressure refrigerant discharged from the compressor 10 flows will function as a water-cooled condenser. The air-side heat exchanger 13 through which a low-pressure, low-temperature refrigerant flows functions as an air cooler, and therefore performs cooling operation.

In contrast to the above, when the refrigerant flows in the direction of arrow B, the water side heat exchanger 12 functions as a water cooler and the air side heat exchanger 13 functions as an air heater, resulting in heating operation.

〔effect〕

As mentioned above, according to this invention, the condensing unit containing the compressor and water-side heat exchanger is placed only in the non-residential area, so the water piping system can be installed in the non-residential area. Even if a problem occurs in the water piping system, it can be dealt with in the non-residential area, so there is no possibility of water leakage affecting the residential area.

Also, since the compressor is installed in a non-residential area,
The problem of noise caused by low frequency sounds from the compressor can also be eliminated.

Furthermore, since the indoor unit is comprised only of an air-side heat exchanger and a blower, its shape can be changed freely to some extent, and therefore it can be freely installed on the ceiling, wall, or floor to match the interior of the room. In addition, if multiple indoor units are installed for one condensing unit, even if the room partitions are changed, multiple indoor units can be operated simultaneously or individually by changing the control circuit, etc. , selective operation control can save energy and create a comfortable environment.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the device according to this invention arranged in a building, Fig. 2 is a longitudinal sectional view of Fig. 1,
Fig. 3 is a system diagram of the air conditioner according to this invention, Fig. 4 is an internal configuration diagram of the air conditioner, and Fig. 5 is a plan view showing the state in which the conventional device is arranged in a building.
FIG. 6 is a system diagram of a conventional air conditioner, and FIG. 7 is an internal configuration diagram of the same conventional air conditioner. 1... Residential area, 1a... Room (room), 2... Non-residential area, 5... Water supply pump, 8... Heat storage tank, 9...
...Cooling tower, 10...Compressor, 12...Water side heat exchanger, 13...Air side heat exchanger, 20...Condensing unit, 21...Water piping, 22...Indoor unit, 23... Refrigerant piping. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A plurality of condensing units containing a water-side heat exchanger and a compressor and arranged in non-residential areas such as corridors and machine rooms of buildings, and a water piping system connecting the condensing units; An air conditioner comprising: an indoor unit installed in a residential area of a building that includes an air-side heat exchanger and a blower; and refrigerant piping connecting the condensing unit and the indoor unit.