JP2008196832A5

JP2008196832A5 -

Info

Publication number: JP2008196832A5
Application number: JP2007035325A
Authority: JP
Filing date: 2007-02-15
Publication date: 2009-08-06
Anticipated expiration: 2027-02-15

Claims

A first series in which a first check valve for flowing a high-temperature refrigerant only in one direction is installed; and a second series in which a second check valve is installed for flowing the high-temperature refrigerant in a direction opposite to the first series; An expansion valve mechanism for depressurizing the high-temperature refrigerant,
The first series includes a first low-load decompression unit, a first high-load decompression unit arranged in parallel with the first low-load decompression unit, and the high-temperature refrigerant downstream of the first check valve . A first pressure responsive valve that allows the high-temperature refrigerant to flow to the first high-load decompression means only when the pressure is equal to or higher than a predetermined pressure,
The second system includes a second low-load decompression unit, a second high-load decompression unit arranged in parallel with the second low-load decompression unit, and the high-temperature refrigerant downstream of the second check valve . An expansion valve mechanism, comprising: a second pressure responsive valve that causes the high-temperature refrigerant to flow to the second high-load decompression means only when the pressure is equal to or higher than a predetermined pressure.

A supply fluid flow path comprising: a fluid inlet through which fluid flows; and a low-pressure fluid outlet and a communication outlet through which fluid flowing from the fluid inlet can freely flow out;
A high-pressure fluid flow path comprising: a high-pressure fluid inlet communicating with the communication outlet; and a high-pressure fluid outlet through which fluid flowing in from the high-pressure fluid inlet flows out;
A slider disposed in the supply fluid flow path to open or close the communication outlet;
An urging means disposed in the supply fluid flow path and pressing the slider in the fluid inlet direction;
When the pressure of the fluid flowing in from the fluid inlet is equal to or lower than a predetermined pressure, the communication outlet is closed by the slider and the fluid flows out of the low-pressure fluid outlet, while the pressure of the fluid flowing in from the fluid inlet When the pressure exceeds a predetermined pressure, the communication outlet is opened, and the fluid flows out from the low-pressure fluid outlet and the communication outlet.

The supply fluid flow path is provided with a moving fluid inlet into which a fluid for moving the slider in the fluid inlet direction flows,
3. The flow path switching device according to claim 2, wherein when a fluid flows into the supply fluid flow path from the moving fluid inlet, the low pressure fluid outlet and the communication outlet are closed.

4. The flow path switching device according to claim 2, wherein the supply fluid flow path and the high-pressure fluid flow path are formed in a common housing.

First series and the flow of claim 3 or 4, wherein flowing the high-temperature refrigerant in the opposite direction to the first series passage switching device according to claim 3 or 4, wherein flow in only one of the high-temperature refrigerant is installed A second system in which a path switching device is installed, and an expansion valve mechanism for decompressing the high-temperature refrigerant,
A first supply pipe in which the first series communicates with a supply fluid inlet of the flow path switching device and a low pressure fluid outlet of the flow path switching device and a first low load decompression means is disposed. A first high-pressure pipe in communication with a low-pressure pipe, a high-pressure fluid outlet of the flow path switching device and a first high-pressure load decompression means, and a first moving pipe in communication with the mobile fluid inlet of the flow path switching device And comprising
A second supply line in which the second system communicates with a supply fluid inlet of the flow path switching device, and a second low load decompression means is disposed in communication with the low pressure fluid outlet of the flow path switching device. and low-pressure pipe, and a second high pressure pipe in which the second high-load decompression means disposed in communication with the high pressure fluid outlet of the flow channel switching device, the second moving pipe in communication with the mobile fluid inlet of the flow path switching apparatus And comprising
The first supply pipe, the second low-pressure pipe, the second high-pressure pipe, and the second moving pipe communicate with each other;
The second supply pipe, the first low-pressure pipe, the first high-pressure pipe, and the first moving pipe are in communication with each other.