CN-122014611-A - Compressor and refrigeration cycle device

Abstract

The invention provides a compressor and a refrigeration cycle device which have excellent gas-liquid separation capability and can improve the maximum capability based on supercharging effect. The compressor (3) is provided with a cylindrical sealed container (13), a compression mechanism (17) capable of compressing a refrigerant, a motor (15) for driving the compression mechanism (17), a crankshaft (19) for transmitting the rotational driving force of the motor (15) to the compression mechanism (17), and a reservoir (25) disposed outside the sealed container (13) and connected to the suction side of the compression mechanism (17). The reservoir (25) is provided with at least one outlet tube (69), which outlet tube (69) has a container (61) and an outlet opening (69 o) connected to the suction side of the compression mechanism (17). The container (61) is provided in a direction different from the opening direction of the outlet opening (69 o) of the at least one outlet pipe (69) when viewed from the rotation center of the crankshaft (19) in the circumferential direction of the closed container (13).

Inventors

• HIRAYAMA TAKUYA
• CHINEN TAKESHI

Assignees

• 日本开利株式会社

Dates

Publication Date

20260512

Application Date

20251112

Priority Date

20241112

Claims (8)

1. 1. A compressor is provided with: a cylindrical closed container; a compression mechanism accommodated in the closed container and capable of compressing a refrigerant; A motor accommodated in the closed container and driving the compression mechanism; A crankshaft for transmitting the rotational driving force of the motor to the compression mechanism, and A liquid reservoir disposed outside the closed container and connected to the suction side of the compression mechanism, The reservoir is provided with: Container, and At least one outlet tube having an outlet opening connected to said suction side of said compression mechanism, The container of the reservoir is provided in a direction different from an opening direction of the outlet opening of the at least one outlet pipe when viewed from a rotation center of the crankshaft in a circumferential direction of the closed container.
2. 2. The compressor according to claim 1, The at least one outlet tube comprises two curved tubes.
3. 3. The compressor according to claim 2, In a bottom view, when a straight line passing through the rotation center of the crankshaft and the center of the container of the reservoir is defined as a first virtual line VL1, the two curved pipes each have a portion extending in a direction parallel to the first virtual line VL 1.
4. 4. A compressor according to claim 3, The two curved pipes each have a portion extending in a direction orthogonal to the first virtual line VL 1.
5. 5. The compressor according to claim 1, In a bottom view, when a straight line passing through the rotation center of the crankshaft and the center of the container of the reservoir is a first virtual line VL1 and a straight line passing through the rotation center of the crankshaft and the center of the outlet opening of the at least one outlet pipe is a second virtual line VL2, an angle θ formed by the first virtual line VL1 and the second virtual line VL2 is smaller than 90 °.
6. 6. The compressor according to any one of claim 1 to 5, The at least one outlet tube is connected to the reservoir from the side of the reservoir.
7. 7. The compressor according to claim 6, The accumulator has a partition plate provided in the interior of the container of the accumulator, dividing the interior space of the container into a refrigerant introduction chamber and a refrigerant discharge chamber, and having a concave portion recessed downward, The at least one outlet tube has an inlet opening connected to the refrigerant discharge chamber, The recess has a bottom portion located below the inlet opening of the uppermost one of the at least one outlet pipes.
8. 8. A refrigeration cycle device is provided with: The compressor of claim 1; a heat sink; An expansion device; Heat absorber, and And a refrigerant pipe connecting the compressor, the radiator, the expansion device, and the heat absorber to circulate a refrigerant.

Description

Compressor and refrigeration cycle device Technical Field Embodiments of the present invention relate to a compressor and a refrigeration cycle device. Background A multi-cylinder rotary compressor is known, which aims to achieve an improvement in volumetric efficiency and to ensure a storage capacity (liquid storage capacity) of liquid refrigerant in a liquid receiver as a gas-liquid separator. The compressor includes a compressor body in a hermetic case, the compressor body housing a rotary shaft having an axial center in a vertical direction, a motor unit connected to an upper end side of the rotary shaft, and an upper compression mechanism unit and a lower compression mechanism unit connected to a lower end side of the rotary shaft and located vertically. The compressor further includes a reservoir provided beside the compressor body, an upper suction pipe provided through a bottom of the reservoir, one end of the upper suction pipe being open upward in the reservoir, the other end of the upper suction pipe being connected to the upper compression mechanism, and a lower suction pipe having one end of the lower suction pipe being open upward in the reservoir, the other end of the lower suction pipe being connected to the lower compression mechanism. The liquid reservoir is disposed in the same direction as the opening direction of the other end of each of the upper suction pipe and the lower suction pipe in the circumferential direction of the hermetic case when viewed from the rotation center of the rotary shaft. Prior art literature Patent literature Patent document 1 Japanese patent application No. 6037563 Disclosure of Invention Problems to be solved by the invention However, in the conventional compressor, the liquid storage capacity in the liquid reservoir is determined by the position of the opening of the suction pipe. Therefore, if the liquid storage capacity is to be ensured, there is a possibility that the suction tube cannot be designed to a desired length. In other words, if the liquid storage capacity is to be ensured, the length of the suction pipe may not be freely adjusted to obtain the supercharging effect of the compressor when the compressor is operated at a predetermined rotational speed. Therefore, in the compressor, there is room for improvement in terms of both the excellent gas-liquid separation capability obtained by securing the liquid storage capacity and the improvement of the maximum capability due to the supercharging effect. Accordingly, an object of the present invention is to provide a compressor and a refrigeration cycle apparatus that have excellent gas-liquid separation capability due to securing of a liquid storage capacity and that can improve maximum capability due to a supercharging effect. Means for solving the problems In order to solve the above problems, a compressor according to an embodiment of the present invention includes a cylindrical closed container, a compression mechanism that is accommodated in the closed container and is capable of compressing a refrigerant, a motor that is accommodated in the closed container and drives the compression mechanism, a crankshaft that transmits a rotational driving force of the motor to the compression mechanism, and a reservoir that is disposed outside the closed container and is connected to a suction side of the compression mechanism, wherein the reservoir includes a container, and at least one outlet pipe that has an outlet opening connected to the suction side of the compression mechanism, and the container of the reservoir is provided in a direction different from an opening direction of the outlet opening of the at least one outlet pipe when viewed from a rotational center of the crankshaft in a circumferential direction of the closed container. In order to solve the above problems, a refrigeration cycle device according to an embodiment of the present invention includes the compressor, a radiator, an expansion device, a heat absorber, and a refrigerant pipe connecting the compressor, the radiator, the expansion device, and the heat absorber to circulate the refrigerant. Drawings Fig. 1 is a schematic view of a refrigeration cycle apparatus and a compressor according to an embodiment of the present invention. Fig. 2 is a longitudinal sectional view of a compressor according to an embodiment of the present invention. Fig. 3 is a longitudinal sectional view of a reservoir of a compressor according to an embodiment of the present invention. Fig. 4 is a cross-sectional view of a compressor according to an embodiment of the present invention. Fig. 5 is a cross-sectional view of another example of a compressor according to an embodiment of the present invention. Fig. 6 is a longitudinal sectional view of another example of the accumulator of the compressor according to the embodiment of the present invention. Detailed Description Embodiments of a compressor and a refrigeration cycle apparatus according to the present