JPS5849016Y2 - Split type air conditioner - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a split type air conditioner that can adjust the amount of pressure reduction according to the wave number between power sources, which varies depending on the region.

In a refrigeration cycle where the power supply frequency is 50± and 60Hz, the capacity of the compressor differs significantly depending on the frequency.

Therefore, the resistance of the pressure reducing device also needs to be varied depending on the capacity of the compressor.

Conventionally, the amount of pressure reduction is adjusted by arranging multiple capillary tubes with different resistances in parallel and switching a switching valve depending on the frequency, but this requires a separate switching valve, which increases costs. It is the cause of

This idea was made in consideration of the above circumstances, and its purpose is to provide an adjustable mechanism for the amount of pressure reduction in the high pressure side connection valve that connects the indoor unit and outdoor unit, and to set the power frequency at 50Hz and 60Hz. The present invention aims to provide a split type air conditioner that can adjust the amount of pressure reduction depending on the region, and can reduce the number of parts and cost by providing a connecting valve.

Embodiments of this invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment, in which 1 is an outdoor unit consisting of a compressor 2 and a condenser 3. In FIG.

4 is an indoor unit equipped with an evaporator 5. The outdoor unit 1 and the indoor unit 4 are connected by a high-pressure side connection valve 6 and a low-pressure side connection valve 7 to form a refrigeration cycle.

The high-pressure side connection valve 6 will be described in detail. Reference numeral 8 denotes a cylindrical valve body.

The lower end of the valve body 8 is provided with an outlet 9 that connects to the evaporator 5, and the side wall has first ports spaced apart in the vertical direction.
A second pore 10a and a second pore 10b are bored.

These first pores 10a and second pores 10b have the function of reducing the pressure of the refrigerant, and they are It is connected to the condenser 3 mentioned above.

Further, a valve seat 12 is provided between the first pore 10 a and the second pore 10 b in the valve body 8 .

A valve body 13 is provided on the valve seat 12 so as to be able to come into contact with and separate from the valve seat 12, and constitutes a variable pressure reduction amount mechanism 14 that selectively opens and closes the first pore 10a and the second pore 10b.

Moreover, when the valve body 13 is pushed down to the lowest end, it can close the outlet 9 and cut off the connection between the condenser 3 and the evaporator 5.

Next, the operation of the above embodiment will be explained.

First, during transportation at the time of shipment, the valve body 13 is pushed down to the lowest end to close the outlet 9 to prevent leakage of the refrigerant.

Next, if the installation area is 50 Hz, pull up the valve body 13 and bring the valve body 13 into contact with the valve seat 12 to open the first pore 1.
The liquid refrigerant from the condenser 3 flows through the first passage 11 a to the first pore 10 a, where the pressure is reduced.

The depressurized refrigerant flows from the outlet 9 of the valve body 8 to the evaporator 5.
It will flow to

In the case of 60 Hz compared to the above-mentioned 50 Hz, the capacity of the compressor 2 increases, so it is necessary to reduce the amount of pressure reduction.

Therefore, when the valve body 13 is pushed down to the middle part, the valve body 13
are apart from the valve seat 12, and have first and second pores 10a.

10b communicates with the outlet 9.

Therefore, the liquid refrigerant flows from the condenser 3 to the first and second passages 1.
1 a, 11 b through the first and second pores 10 a
, 10b, where it is depressurized.

The depressurized refrigerant flows from the outlet 9 of the valve body 8 to the evaporator 5.
It will flow to

Therefore, the high pressure side connection valve 6 has the function of an original backless valve and the function of varying the amount of pressure reduction.

FIG. 2 shows a second embodiment, in which a capillary tube 15 is added between the high pressure side connection valve 6 and the evaporator 5 as a second pressure reducing device.

With this configuration, fluid pressure loss can be stabilized.

FIG. 3 shows a third embodiment, in which a first through hole 16 a and a second through hole 16 b are provided in the valve body 8 of the high pressure side connection valve 6, and these first and second through holes are provided. Through hole 16a,
16 b respectively the first and second capillary tubes 1
7a and 17b are connected.

FIG. 4 shows a fourth embodiment, in which a liquid storage device 18 is provided in the second passage 11b in the third embodiment, and the liquid refrigerant can be stored when the second passage 11b is closed. It has been made possible.

In FIGS. 2 to 4, the same components as those in the first embodiment are designated by the same numbers, and the explanation thereof will be omitted.

As explained above, this invention is equipped with a variable pressure reduction mechanism on the high-pressure side connection valve that connects the indoor unit and outdoor unit, so the pressure reduction amount can be adjusted depending on the region where the power frequency is 50 ton or 60 ton. I can do it.

Furthermore, by providing the connecting valve with a variable pressure reduction mechanism, there is no need to provide a separate switching valve unlike in the past, and the number of parts can be reduced, resulting in an effect that costs can be reduced.

[Brief explanation of drawings]

1 to 4 are schematic diagrams showing different embodiments of this invention. 1...Outdoor unit, 2...Compressor,
3...Condenser, 4...Indoor minute,
5...Evaporator, 6...High pressure side connection valve, 7...Low pressure side connection valve, 14...
・Variable pressure reduction mechanism.

Claims (3)

[Scope of utility model registration request] (1) In a split type air conditioner that configures a refrigeration cycle by connecting an outdoor unit having a compressor and a condenser to an indoor unit having an evaporator through connection valves on the high pressure side and the low pressure side, the high pressure A split type air conditioner characterized by having a variable pressure reduction mechanism installed on the side connection valve. (2) The variable pressure reduction mechanism is comprised of two pores provided in the valve body and a valve body that selectively opens and closes these pores, as stated in claim 1 of the utility model registration claim. Split type air conditioner. (3) Request for registration of a utility model characterized in that the pressure reduction amount variable mechanism is comprised of two through holes provided in the valve body and connected to each capillary tube, and a valve body that selectively opens and closes these through holes. A split type air conditioner according to item 1.