Abstract: An air conditioner includes: a casing including a bottom plate; a refrigerant flow path unit housed inside the casing, and having an interior in which a refrigerant flow path is formed; a compressor installed on the bottom plate; and a shutoff valve that opens and closes to allow and block a flow of a refrigerant. The refrigerant flow path unit is supported at a distance from the bottom plate by a fixed-side member other than the compressor. The fixed-side member includes either one of: a mounting plate to which the shutoff valve is fixed, or a support plate to which the mounting plate is fixed.

Abstract: A heat source unit includes: a compressor; refrigerant pipes for a flow of a gas refrigerant having been discharged from the compressor and a flow of a gas refrigerant to be sucked into the compressor; a refrigerant flow path module connected to the refrigerant pipes; and a casing accommodating the compressor, the refrigerant pipes, and the refrigerant flow path module; in which the refrigerant flow path module includes a module body having an upper surface and a lower surface, having a vertical length less than a horizontal length, and provided therein with a flow path for a refrigerant, the refrigerant flow path module is disposed above and apart from a bottom part of the casing, and the refrigerant pipes include a first pipe and a second pipe each communicating with the flow path in the module body and supporting the refrigerant flow path module.

Abstract: A refrigerant flow path module provided with a refrigerant flow path inside includes a first plate, a second plate that is overlapped on the first plate, a refrigerant pipe that contains copper and is attached to the first plate, a brazing material that contains copper and joins facing surfaces of the first plate and the second plate to each other, and a storage that stores the brazing material in excess.

Abstract: A method for manufacturing a refrigerant flow path module including a first plate and a second plate stacked on each other and including a refrigerant flow path inside includes arranging a brazing material between the first plate and the second plate, fastening the first plate and the second plate between which the brazing material is disposed with a fastening member, and heating the first plate and the second plate fastened by the fastening member in a furnace.

Abstract: A refrigeration apparatus includes: a casing that houses a compressor therein; a four-way switching valve; an accumulator; a first pipe that causes a refrigerant to flow between the four-way switching valve and a discharge portion of the compressor; and a second pipe that causes a refrigerant to flow between the four-way switching valve and the accumulator. The four-way switching valve, the first pipe, and the second pipe are all made of stainless steel.

Abstract: A refrigerant pipe constituting a refrigerant circuit of a refrigeration apparatus, includes: a pipe body made of stainless steel; and a first connecting tube made of copper or a copper alloy and that is configured to connect a first different refrigerant pipe to the refrigerant pipe. The first connecting tube is connected to an outer circumferential surface of a first end of the pipe body in a pipe axis direction of the pipe body. The first connecting tube overlaps with the pipe body in a pipe diameter direction in an entirety of the first connecting tube in the pipe axis direction.

Abstract: A refrigerant pipe of a refrigeration apparatus includes: a first pipe, made of stainless steel, through which a refrigerant flows; a joint pipe, made of a material different from stainless steel, disposed on an outer peripheral surface of the first pipe; and a second pipe, having a diameter smaller than a diameter of the first pipe, connected to the outer peripheral surface of the first pipe via the joint pipe. A surface of the second pipe at which the second pipe is connected to the joint pipe is made of a material identical to the material of the joint pipe.

Abstract: A refrigerant pipe that constitutes a refrigerant circuit of a refrigeration apparatus includes: a first pipe; and a second pipe. The first pipe includes: a first pipe body, made of stainless steel; and a first connection, made of a material different from stainless steel, disposed at an end of the first pipe body in a pipe axial direction of the first pipe body. The second pipe includes: a second pipe body, made of stainless steel; and a second connection, made of a material identical to the material of the first connection, disposed at an end of the second pipe body in a pipe axial direction of the second pipe body. The first connection is connected to the second connection.

Abstract: A refrigerant pipe that constitutes a refrigerant circuit of a refrigeration apparatus includes: a first pipe; and a second pipe. The first pipe includes a pipe body made of stainless steel; and a connection pipe, made of a material different from stainless steel, disposed at an end of the pipe body in a pipe axial direction. The connection pipe includes a protrusion protruding in the pipe axial direction from the end of the pipe body. The second pipe includes: a second-pipe large diameter portion, made of a material that is a same as the material of the connection pipe, disposed at an end in the pipe axial direction; a second-pipe small diameter portion having a smaller diameter than the second-pipe large diameter portion; and a step portion disposed between the second-pipe large diameter portion and the second-pipe small diameter portion.

Abstract: A refrigeration apparatus includes: a refrigerant flow path unit that comprises plates stacked together, and in which a refrigerant flow path is disposed; first components that are functional components each including a driving unit; second components other than functional components; and a casing accommodating the refrigerant flow path unit, and the first and second components. The first components and the second components constitute a refrigerant circuit. The refrigerant flow path unit: has a first surface and a second surface on both sides in a normal direction of the plates, and is disposed in the casing in a posture with the first surface and the second surface being upstanding. The first components are connected to the first surface. The second components are connected to the second surface. The refrigerant flow path unit includes joint tubes that connect pipes linked to the second components.

Abstract: A refrigerant flow path unit includes: a unit body that includes plates that are laminated together, and has an interior in which a refrigerant flow path is formed; a refrigerant pipe; and a first brazing filler metal that joins the unit body to the refrigerant pipe. The plates of the unit body include: a first plate that has a first opening and is disposed at an end of the unit body in a first direction in which the plates are laminated; and a second plate that has a second opening that communicates with the first opening and is disposed second from the end of the unit body in the first direction. The refrigerant pipe is inserted into the first opening and the second opening.

Abstract: A refrigerant flow path unit includes: a unit body that includes plates that are laminated together, and has an interior in which a refrigerant flow path is formed; a refrigerant pipe; and a first brazing filler metal that joins the unit body to the refrigerant pipe. The plates of the unit body include: a first plate that has a first opening and is disposed at an end of the unit body in a first direction in which the plates are laminated; and a second plate that has a second opening that communicates with the first opening and is disposed second from the end of the unit body in the first direction. The refrigerant pipe is inserted into the first opening and the second opening.

Abstract: An air conditioner includes: a casing including a bottom plate; a refrigerant flow path unit housed inside the casing, and having an interior in which a refrigerant flow path is formed; a compressor installed on the bottom plate; and a shutoff valve that opens and closes to allow and block a flow of a refrigerant. The refrigerant flow path unit is supported at a distance from the bottom plate by a fixed-side member other than the compressor. The fixed-side member includes either one of: a mounting plate to which the shutoff valve is fixed, or a support plate to which the mounting plate is fixed.

Abstract: A refrigeration apparatus includes: a refrigerant flow path unit that comprises plates stacked together, and in which a refrigerant flow path is disposed; first components that are functional components each including a driving unit; second components other than functional components; and a casing accommodating the refrigerant flow path unit, and the first and second components. The first components and the second components constitute a refrigerant circuit. The refrigerant flow path unit: has a first surface and a second surface on both sides in a normal direction of the plates, and is disposed in the casing in a posture with the first surface and the second surface being upstanding. The first components are connected to the first surface. The second components are connected to the second surface. The refrigerant flow path unit includes joint tubes that connect pipes linked to the second components.

Abstract: A refrigerant pipe unit includes: a first plate; a second plate stacked on the first plate; and a control valve. One or both of the first plate and the second plate include a refrigerant flow path. The control valve includes: a valve body that includes a refrigerant passage communicating with the refrigerant flow path, rotates in the first plate, and changes a flow of a refrigerant in the refrigerant flow path with an amount of rotation of the valve body; and a driver that adjusts the amount of the rotation of the valve body.

Abstract: A pressure vessel provided on a refrigerant circuit, includes: a vessel body made of iron; an inlet pipe causing a refrigerant to flow into the vessel body; and an outlet pipe causing the refrigerant to flow out of the vessel body. A pipe includes one or both of the inlet pipe and the outlet pipe. The pipe includes: a first portion made of stainless steel; a second portion made of a material whose main component is copper; and a brazed portion connecting the first portion and the second portion. An end of the first portion on a first side in a pipe axial direction of the pipe is disposed outside the vessel body. An end of the first portion on a second side in the pipe axial direction is connected to the second portion. The second portion is connected to the vessel body.

Abstract: A refrigerant pipe constituting a refrigerant circuit of a refrigeration apparatus, includes: a pipe body made of stainless steel; and a first connecting tube made of copper or a copper alloy and that is configured to connect a first different refrigerant pipe to the refrigerant pipe. The first connecting tube is connected to an outer circumferential surface of a first end of the pipe body in a pipe axis direction of the pipe body. The first connecting tube overlaps with the pipe body in a pipe diameter direction in an entirety of the first connecting tube in the pipe axis direction.

Abstract: A refrigerant pipe that constitutes a refrigerant circuit of a refrigeration apparatus includes: a first pipe; and a second pipe. The first pipe includes: a first pipe body, made of stainless steel; and a first connection, made of a material different from stainless steel, disposed at an end of the first pipe body in a pipe axial direction of the first pipe body. The second pipe includes: a second pipe body, made of stainless steel; and a second connection, made of a material identical to the material of the first connection, disposed at an end of the second pipe body in a pipe axial direction of the second pipe body. The first connection is connected to the second connection.

Abstract: A refrigerant pipe that constitutes a refrigerant circuit of a refrigeration apparatus includes: a first pipe; and a second pipe. The first pipe includes a pipe body made of stainless steel; and a connection pipe, made of a material different from stainless steel, disposed at an end of the pipe body in a pipe axial direction. The connection pipe includes a protrusion protruding in the pipe axial direction from the end of the pipe body. The second pipe includes: a second-pipe large diameter portion, made of a material that is a same as the material of the connection pipe, disposed at an end in the pipe axial direction; a second-pipe small diameter portion having a smaller diameter than the second-pipe large diameter portion; and a step portion disposed between the second-pipe large diameter portion and the second-pipe small diameter portion.

Abstract: A refrigeration apparatus includes: a casing that houses a compressor therein; a four-way switching valve; an accumulator; a first pipe that causes a refrigerant to flow between the four-way switching valve and a discharge portion of the compressor; and a second pipe that causes a refrigerant to flow between the four-way switching valve and the accumulator. The four-way switching valve, the first pipe, and the second pipe are all made of stainless steel.