JPS62147085A - Scroll compressor - Google Patents

Abstract

PURPOSE:To improve the efficiency of a scroll compressor by inserting a heat insulating material inside a groove formed in the panel board of a fixed scroll and preventing the temp. of a refrigerant gas sucked into a scroll part from rising. CONSTITUTION:A heat insulating material 19 is installed on the inside of the groove 18 of a fixed scroll 6. Part of refrigerant gas which has flowed into a suction chamber 11 through a suction pipe 12, flows directly into the D part shown in the figure, whereas, the other part flows into the C part through the groove 18 of the fixed scroll 6. The sucked-in refrigerant can flow into the C part without being directly brought into contact with the fixed scroll 6 in the groove part 18, due to the heat insulating material 19 which is installed inside the groove 18. As a result, the temp. of the refrigerant gas flowing into the C part can be prevented from rising since it is not subjected to heat exchange with the fixed scroll 6 the temp. of which has been raised by a discharge gas, thereby, preventing the lowering of energy consumption efficiency and a mechanical loss.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a scroll compressor that reduces the temperature rise of suction gas.

2. Description of the Related Art The structure of a conventional scroll compressor will be explained with reference to FIGS. 4 to 7.

1 is a scroll compression mechanism 2 housed inside a sealed container.
, a motor 3, and a crankshaft 4 connecting the two. The compression mechanism 2 includes a set of an orbiting scroll 5 and a fixed scroll 6, which have spiral wraps arranged in the same direction on an end plate.
It is composed of a block γ which is fixed to a fixed scroll e and houses an orbiting scroll 6 and a crankshaft 4. The orbiting scroll 6 and the fixed scroll 6 are combined with each other with their laps facing inward. The orbiting scroll 5 has an orbiting bearing portion 9 into which the crank 8 of the crankshaft 4 is inserted into the back surface of the end plate.
and an Oldham ring 10 for preventing rotation of the orbiting scroll. Around the wrap of the fixed scroll 6, there are points A on the outer line of the end of the wrap of the orbiting scroll 5 and a point B on the outer line of the wrap forming the maximum sealed space on the inner line of the wrap of the fixed scroll 6. A mature tree chamber 11 is provided by connecting points a and b, and a suction pipe 12 leading to the outside of the container is connected from this suction chamber 11. Further, the fixed scroll 6 has a discharge hole 13 in the center thereof. Compression mechanism 2
is supported within the container 1, and the motor 3 is also supported within the container 1. An upper space 14 of the compression mechanism 2 and a lower space 15 in which the motor 3 is housed are connected by a passage 16, and a discharge pipe 17 connected to the outside of the container 1 is provided in the lower space. When the crankshaft 4 rotates due to the rotation of the motor 3, the orbiting scroll 5
Rotation by the tarrank 8 and rotation mechanism 10 perform a rotation movement with respect to the fixed scroll 6. As a result, the volume of the space formed by the wraps of both scrolls and the mirror plate decreases as it moves toward the center.

The gas sucked through the suction pipe 12 is compressed and discharged from the discharge hole 13. The gas discharged into the upper space 14 inside the container 1 flows into the lower space 15 through the passage 16 and is discharged to the outside of the container 1 through the discharge pipe 17.

In the scroll compressor configured as above, the refrigerant gas flowing into the suction chamber 11 from the suction pipe 12 is
The suction is taken from parts C and D in the figure, but the suction to the 0 part is taken through the groove 18 provided in the fixed scroll 6.

Problems to be Solved by the Invention However, in the above configuration, while the refrigerant flowing into the suction chamber 11 flows into the Cs through the groove 18 provided in the fixed scroll 6, the upper space in the container 1 is closed. Since the temperature of the fixed scroll 6 itself is raised by the gas discharged to the 0 part, the temperature of the refrigerant gas sucked into the 0 part is increased by heat exchange between the refrigerant gas and the groove part 18 of the fixed scroll 6, and the EER ( This not only reduces the energy consumption efficiency (energy consumption efficiency), but also increases the discharge temperature, which accelerates scroll wear and increases mechanical loss.

The present invention solves these conventional problems and provides a scroll compressor with a simple configuration and high efficiency without increasing the temperature of the refrigerant entering the zero part.

Means for Solving the Problems In order to solve the above problems, a heat insulating material is attached to the inside of the groove provided in the fixed scroll of the present invention.

Function The present invention prevents the temperature of the refrigerant gas sucked into the scroll portion from increasing by installing a heat insulating material inside the groove for the suction passage of the fixed scroll.
This prevents a decrease in RR and an increase in mechanical loss.

Embodiment An embodiment of the scroll compressor of the present invention will be described below with reference to the drawings (FIGS. 1 to 3). In the figure, the same parts as in FIGS. 4 to 7 of the conventional example are designated by the same reference numerals.

In FIGS. 1, 2 and 3, the heat insulating material 19 is installed inside the groove 18 of the fixed scroll 6. In FIGS.

In the scroll compressor configured as described above, one side of the refrigerant gas flowing into the suction chamber 11 from the suction pipe 12 flows directly into the D section, and the other side passes through the groove 18 of the fixed scroll 6. However, since the heat insulating material 19 is installed inside the groove 18, it does not come into direct contact with the fixed scroll 6 in the groove 18.

Therefore, the sucked refrigerant does not come into direct contact with the fixed scroll 6 in the groove portion 18, and can flow into the zero portion.

As described above, according to this embodiment, by installing the heat insulating material 19 inside the groove 18, the refrigerant gas does not come into direct contact with the fixed scroll 6, so the temperature of the fixed scroll is increased by one discharged gas. Since there is no heat exchange with 6, it is possible to prevent the temperature of the refrigerant gas flowing into the 0 part from increasing.

Effects of the Invention As described above, the present invention has the effect of preventing a decrease in EER and mechanical loss because the temperature of the sucked refrigerant gas does not increase by installing a heat insulating material inside the groove of the fixed scroll. There is.

[Brief explanation of drawings]

FIG. 1 is a plan view of a fixed scroll in a scroll compressor showing an embodiment of the present invention, FIG. 2 is a sectional view showing the fixed scroll and orbiting scroll at the start of suction in FIG. 1, and FIG. 1 is a sectional view taken along the Y-Y line in FIG. 1, FIG. 4 is a sectional view of a conventional scroll compressor structure, and FIG. 5 is a sectional view showing a conventional fixed scroll and an orbiting scroll at the end of suction.
FIG. 6 is a sectional view showing the fixed scroll and orbiting scroll at the start of suction in FIG. 4, and FIG. 7 is a plan view of the conventional fixed scroll. 5...Orbiting scroll, 6...Fixed scroll, 18...Groove, 19...Insulating material. Name of agent: Patent attorney Toshio Nakao 1 person/δ
- Groove Figure 3

Claims (1)

[Claims] A scroll compressor consisting of a fixed scroll part and an orbiting scroll part that perform relative orbiting motion, and a drive mechanism that drives the orbiting scroll part, wherein a heat insulating material is installed inside a groove formed in an end plate of the fixed scroll. A scroll compressor characterized by: