1. Field of the Invention
The present invention relates to a baffle plate assembly, and more particularly to a baffle plate assembly for a compressor to guide the working fluid respectively into the compressing chamber and the motor chamber of the compressor in a certain proportion.
2. Description of Related Art
To reduce the temperature in a compressor, part of a working fluid will be led into the motor chamber of the compressor to reduce the temperature of the motor. For example, U.S. Pat. No. 3,270,952 entitled “Protective Device For Compressors” to Bellmer shows a baffle plate mounted in a compressor and corresponding to the compressor inlet. Accordingly, the working fluid entering the compressor from the inlet will contact the baffle plate. Part of the working fluid will be led into the motor unit chamber to reduce the temperature of the motor, and the remaining working fluid will be led into the compressor unit chamber for the compressing process.
However, the baffle plate of Bellmer is a curved plate secured in the compressor, and the proportion of the working fluid flowing into the motor unit chamber and the compressor unit chamber is not certain. The compressor cannot work at an optimal condition due to the uncertain proportion of the working fluid used in this way. In addition, the working fluid entering from the inlet will impact the baffle plate of Bellmer directly at a high speed so as to make an undesirable noise.
To overcome the shortcomings, the present invention tends to provide a baffle plate assembly to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide a baffle plate assembly for a compressor and that can lead the working fluid respectively into the compressing chamber and the motor chamber of the compressor in a certain proportion. The baffle plate assembly has a baffle plate comprising a back plate and a partition wall. The back plate has an inner space and is attached to the housing of the compressor. The partition wall is formed on the back plate to divide the inner space of the back plate into at least one upper guiding channel communicating with the compressing chamber in the compressor and at least one lower guiding channel communicating with the motor chamber of the compressor. Accordingly, the working fluid can be respectively led into the compressing chamber and the motor chamber of the compressor through the at least one upper guiding channel and the at least one lower guiding channel. Consequently, the compressor will operate at an optimal condition.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The partition wall (16) is formed on the back plate (12) to divide the inner space of the back plate (12) into at least one upper guiding channel (17) and at least one lower guiding channel (18). In a first embodiment, the partition wall (16) is laterally formed between the wings (14) to divide the inner space into one upper guiding channel (17) above the partition wall (16) and one lower guiding channel (18) below the partition wall (16). Multiple recesses (122) are defined in the back plate (12) at a position corresponding to the upper guiding channel (17).
In another embodiment, the partition wall has a T shape to define one upper guiding channel (17) and two lower guiding channels (18) in the back plate (12), or the partition wall has an inverse T shape to define two upper guiding channels (17) and one lower guiding channel (18) in the back plate (12).
With reference to
When the working fluid enters the housing from the inlet (56), the entering fluid will be divided and respectively led into compressing chamber (52) and the motor chamber (54) respectively through the upper guiding channel (17) and the lower guiding channel (18). The proportion of the fluid entering the compressing chamber (52) and the motor chamber (54) is determined by the position where the partition wall (16) locates and is certain. The motor in the motor chamber (54) can be efficiently cooled by the working fluid entering into the motor chamber (54) in a certain proportion. The remaining working fluid entering into the compressing chamber (52) will also provide an excellent work effect for a refrigerating cycle or an air condition cycle. Therefore, the operation of the compressor (50) can be controlled under an optimal condition. In addition, the proportion of the fluid entering the compressing chamber (52) and the motor chamber (54) is adjustable by means of changing the location of the partition wall (16).
Additionally, the partition wall (16) can enhance the stiffness of the baffle plate (10) so as to reduce the noise when the working fluid impacts the baffle plate (10).
Furthermore, the recesses (122) in the back plate (12) can increase the area of the back plate (12) for the oil in the working fluid adhering to the back plate (12) when the working fluid passes through the upper guiding channel (17). This can keep the working fluid entering the compressing chamber (52) from containing too much oil, and the refrigerating effect provided by the working fluid is improved.
With reference to
With reference to
Accordingly, the working fluid entering from the inlet (56) of the compressor will be led into the upper guiding channel (47) and the lower guiding channel (48) in a certain proportion and will be respectively discharged from the upper opening and the lower opening. In addition, multiple recesses (422) are defined in the back plate (42) of the baffle plate (40) at a position corresponding to the upper guiding channel (47) for the oil in the working fluid to adhere to the back plate (42).
With reference to
The baffle plate (10) is moveably attached to the housing of the compressor (50) and is attached to the thermal conductive element (19). A sliding device is mounted on the baffle plate (10) to make the baffle plate (10) be moveably attached to the housing of the compressor (50). In practice, the sliding device comprises two longitudinal grooves (142) respectively defined through the wings (14) and screws (not numbered) penetrating through the grooves (142). The screws penetrating through the grooves (142) are screwed into the housing of the compressor (50), such that the baffle plate (10) is moveably attached to the housing with the screws. In another embodiment, with reference to
When the temperature in the motor chamber (54) rises, the thermal conductive element (19) deforms to push the baffle plate (10) to move upward. Accordingly, the area of the inlet (54) communicating with the lower guiding channel (18) is increased, such that the amount of the working fluid flowing into the motor chamber (54) will increase. This can provide an enhanced cooling effect to the motor in the motor chamber (54), and the temperature in the motor chamber (54) can be rapidly reduced.
When the temperature in the motor chamber (54) is reduced, the thermal conductive element (19) will deform to pull the baffle plate (10) to move downward. This can reduce the area in the inlet (56) communicating with the lower guiding channel (18), and the amount of the working fluid flowing into the motor chamber (54) is decreased. Accordingly, the temperature in the motor chamber (54) can be automatically controlled at a desired range by means of the movement of the baffle plate (10) actuated by the thermal conductive element (19). Consequently, the operation of the compressor (50) is efficient and is improved.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
The application is a divisional application of an U.S. application with Ser. No. 10/334,253, filed on Dec. 30, 2002 now abandoned, which is hereby incorporated by reference.
Number | Name | Date | Kind |
---|---|---|---|
3270952 | Bellmer | Sep 1966 | A |
4627861 | Ibaraki et al. | Dec 1986 | A |
4767293 | Caillat et al. | Aug 1988 | A |
5055010 | Logan | Oct 1991 | A |
5240391 | Ramshankar et al. | Aug 1993 | A |
6402485 | Hong et al. | Jun 2002 | B2 |
6474964 | De Bernardi et al. | Nov 2002 | B2 |
Number | Date | Country |
---|---|---|
1503656 | Nov 1969 | DE |
1787567 | May 2007 | EP |
Number | Date | Country | |
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20040166008 A1 | Aug 2004 | US |
Number | Date | Country | |
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Parent | 10334253 | Dec 2002 | US |
Child | 10790346 | US |