Exhaust flow channel structure for reducing starting voltage of refrigerator compressor

Abstract

The utility model discloses an exhaust runner structure for reducing starting voltage of a refrigerator compressor, which comprises a valve plate arranged between an air cylinder cover and an air cylinder seat, an exhaust runner is arranged in the air cylinder seat, and a valve plate exhaust hole consistent with the exhaust runner in horizontal position is arranged on the valve plate. A containing cavity is formed between the valve plate exhaust hole and the exhaust flow channel, a valve block is arranged in the containing cavity, and a valve block through hole coaxial with the exhaust flow channel and the valve plate exhaust hole in the radial direction is formed in the valve block. Through the optimized and improved design of the product provided by the utility model, the starting torque of the motor can be reduced under the condition that the starting voltage is reduced, the minimum starting voltage is reduced or the starting voltage is not changed, so that the cost is saved; in addition, after the valve plate exhaust hole is expanded, the valve plate with the valve plate through hole can achieve the self-adaptive throttling effect, and then the beneficial effects that pulsation is reduced, and impact of the compressor on a box body pipeline is reduced are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor exhaust flow channel structures, in particular to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor. Background Art

[0002] As people's awareness of environmental protection continues to increase, the refrigerant used in refrigeration appliances has gradually shifted to the more environmentally friendly natural refrigerant R290. R290 is characterized by high efficiency and energy saving, high heat exchange, and fast cooling, making it well adaptable to the market.

[0003] However, the conversion to natural refrigerant R290 results in higher operating pressures, which in turn increases the design requirements for the exhaust duct structure and the reliability of the compressor components. This higher operating pressure also increases the starting torque requirements for refrigerator compressors. The sum of the starting and running torque requirements in motor design is fixed, so high starting requirements make it difficult to achieve high performance.

[0004] Lowering the starting requirements will affect the product's practicality. The design of the exhaust duct significantly impacts starting performance. Typically, the compressed, high-pressure gas within the compressor cylinder is discharged through the valve plate holes into the cylinder head cavity. The high-pressure gas in the cylinder head then flows through the valve plate holes and the holes in the cylinder base, flowing through the exhaust duct. The exhaust duct is designed in an expansion, throttling, and re-expansion pattern because the compressor operates in a discontinuous, pulsating state. If left uncontrolled, this can cause significant pulsation shocks to the refrigeration piping connected to the compressor, generating vibration and noise.

[0005] In summary, the existing exhaust flow structure has the following deficiencies:

[0006] First, once the flow path is designed, it is difficult to change. Compressors of different displacements have inconsistent pulsation characteristics, making it difficult to adapt to the pulsation requirements of the refrigeration system.

[0007] Secondly, in order to minimize the impact of pulsation, the flow channel design has a relatively severe throttling, which leads to excessively high starting performance requirements for the compressor, which is not conducive to reliability and cost, reduces compressor performance, and increases the difficulty of controlling the motor manufacturing process;

[0008] Again, reduce pulsation shock, which causes excessive swing when starting and stopping the movement, possibly hitting the shell and causing abnormal noise. Utility Model Content

[0009] In view of the above technical problems in the related art, the present invention proposes an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor, which can overcome the above shortcomings of the prior art.

[0010] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0011] An exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor;

[0012] The exhaust flow channel structure for reducing the starting voltage of the refrigerator compressor includes a valve plate arranged between the cylinder head and the cylinder seat, an exhaust flow channel is provided in the cylinder seat, a valve plate exhaust hole is provided on the valve plate and the horizontal position is consistent with the exhaust flow channel, an accommodating cavity is provided between the valve plate exhaust hole and the exhaust flow channel, a valve plate is provided in the accommodating cavity, and a valve plate is provided on the valve plate. A valve plate through hole is provided on the valve plate and the radial direction is coaxial with the exhaust flow channel and the valve plate exhaust hole.

[0013] Furthermore, the left side of the valve plate is fitted with the right side of the valve plate, the bottom of the valve plate is fixed on the cylinder seat, and the top of the valve plate is a non-fixed free end, and the top of the free end of the valve plate is higher than the top wall of the exhaust channel and the exhaust hole of the valve plate.

[0014] Furthermore, the height of the accommodating cavity is higher than the height of the valve plate, and the width of the accommodating cavity is greater than or equal to twice the width of the valve plate.

[0015] Furthermore, an inwardly concave guide cone portion is formed between the end surface of the valve plate facing the airflow direction and the valve plate through hole, and the guide cone portion is used for guiding and moderating the airflow.

[0016] Furthermore, the longitudinal section of the valve plate exhaust hole on the valve plate is shaped like an enlarged bulb.

[0017] Furthermore, the height dimension of the accommodating cavity above the valve plate is less than or equal to the diameter dimension of the valve plate through hole and greater than or equal to the radius dimension of the valve plate through hole.

[0018] Furthermore, one end of the exhaust flow channel away from the valve plate is connected to the exhaust cavity.

[0019] Furthermore, radial axes of the valve plate exhaust hole, the valve plate through hole and the exhaust flow channel are located on the same straight line.

[0020] Furthermore, the valve plate is made of an elastic material with resilience.

[0021] The beneficial effects of the present invention are as follows: through the optimized and improved design of the product of the present invention, the starting torque of the motor can be reduced when the starting voltage is lowered, the minimum starting voltage is lowered, or the starting voltage is not changed, thereby saving costs; in addition, after the exhaust hole of the valve plate is expanded, the valve plate with the valve plate through hole can achieve the effect of adaptive throttling, thereby achieving the beneficial effect of reducing pulsation and reducing the impact of the compressor on the box pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to an embodiment of the present utility model;

[0024] Figure 2 The invention relates to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to an embodiment of the invention. Figure 1 Detailed view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the valve structure of an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to an embodiment of the present utility model;

[0026] Figure 4 This is a partial three-dimensional diagram of an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram from a first perspective of a conventional exhaust flow channel structure according to an embodiment of the present utility model;

[0028] Figure 6 is a second perspective schematic diagram of a conventional exhaust flow channel structure according to an embodiment of the present utility model;

[0029] In the figure: 1. Cylinder head; 2. Cylinder seat; 3. Cylinder chamber; 4. Exhaust chamber; 5. Exhaust flow channel; 6. Valve plate; 7. Valve plate exhaust hole; 8. Valve plate; 9. Valve plate through hole; 10. Traditional valve plate hole; 11. Guide cone. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0031] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0032] like Figure 1-4 As shown, according to an embodiment of the present utility model, an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor includes a valve plate 6 arranged between a cylinder head 1 and a cylinder seat 2, an exhaust flow channel 5 is provided in the cylinder seat 2, a valve plate exhaust hole 7 is provided on the valve plate 6 and the horizontal position is consistent with the exhaust flow channel 5, an accommodating cavity is provided between the valve plate exhaust hole 7 and the exhaust flow channel 5, a valve plate 8 is provided in the accommodating cavity, and a valve plate 8 is provided on the valve plate 8. A valve plate through hole 9 is provided on the valve plate 8 and is radially coaxial with the exhaust flow channel 5 and the valve plate exhaust hole 7.

[0033] According to an embodiment of the present invention, an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor is described. In a specific embodiment, the left side of the valve plate 8 is fitted with the right side of the valve plate 6, the bottom of the valve plate 8 is fixedly set on the cylinder seat 2, and the top of the valve plate 8 is a non-fixed free end, and the top of the free end of the valve plate 8 is higher than the top wall of the exhaust flow channel 5 and the valve plate exhaust hole 7.

[0034] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, the height of the accommodating cavity is higher than the height of the valve plate 8, and the width of the accommodating cavity is greater than or equal to twice the width of the valve plate 8.

[0035] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, an inwardly concave guide cone portion 11 is formed between the end surface of the valve plate 8 facing the airflow direction and the valve plate through hole 9, and the guide cone portion 11 is used for guiding and relaxing the airflow.

[0036] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, the longitudinal section of the valve plate exhaust hole 7 on the valve plate 6 is in the shape of an enlarged bulb.

[0037] According to an embodiment of the present invention, an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor is described. In a specific embodiment, the height dimension of the accommodating cavity above the valve plate 8 is less than or equal to the diameter dimension of the valve plate through hole 9 and greater than or equal to the radius dimension of the valve plate through hole 9.

[0038] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, one end of the exhaust flow channel 5 away from the valve plate 6 is connected to the exhaust chamber 4.

[0039] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, the radial axes of the valve plate exhaust hole 7, the valve plate through hole 9 and the exhaust flow channel 5 are located on the same straight line.

[0040] According to an exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in an embodiment of the present invention, in a specific embodiment, the valve plate 8 is made of an elastic material with resilience.

[0041] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0042] In specific use, according to the exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor described in the utility model, the valve plate exhaust hole 7 is enlarged on the basis of the traditional exhaust flow channel, and a valve plate 8 with a valve plate through hole 9 is added in the middle of the exhaust flow channel 5. The size of the valve plate through hole 9 can be designed according to the displacement of the compressor.

[0043] The hole at the exhaust end of the compressor is expanded to form a valve plate exhaust hole 7 and a valve plate 8 with a valve plate through hole 9 is added. The hole of the valve plate 8 and the valve plate through hole 9 can be designed according to the displacement of the compressor. When the compressor starts, the gas first flows through the valve plate through hole 9 with a smaller aperture. Since the gas needs to be discharged as quickly as possible, when a larger gas flow flows through the valve plate 8, the valve plate 8 is bent and deformed by the air flow pressure, opening a larger air flow channel on the upper side of the valve plate 8, allowing the gas to flow through the exhaust flow channel 5 as quickly as possible. When the valve plate 8 reaches the maximum deformation position, the compressor completes normal operation. At this time, the small hole valve plate through hole 9 on the valve plate 8 plays a throttling role. When the compressor stops, there is no pressure difference, and the valve plate 8 rebounds and resets.

[0044] To sum up, with the help of the above-mentioned technical solution of the utility model, through the optimization and improvement design of the product of the utility model, the starting torque of the motor can be reduced when the starting voltage is lowered, the minimum starting voltage is lowered, or the starting voltage is not changed, thereby saving costs; in addition, after the valve plate exhaust hole is expanded, the valve plate with the valve plate through hole can achieve the effect of adaptive throttling, thereby achieving the beneficial effect of reducing pulsation and reducing the impact of the compressor on the box pipeline.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor, characterized in that: The invention comprises a valve plate (6) arranged between a cylinder head (1) and a cylinder seat (2), an exhaust channel (5) being provided in the cylinder seat (2), a valve plate exhaust hole (7) being provided on the valve plate (6) and being in the same horizontal position as the exhaust channel (5), an accommodating cavity being provided between the valve plate exhaust hole (7) and the exhaust channel (5), a valve plate (8) being provided in the accommodating cavity, and a valve plate through hole (9) being provided on the valve plate (8) and being radially coaxial with the exhaust channel (5) and the valve plate exhaust hole (7).

2. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: The left side of the valve plate (8) is fitted with the right side of the valve plate (6), the bottom of the valve plate (8) is fixed on the cylinder seat (2), and the top of the valve plate (8) is a non-fixed free end, and the top of the free end of the valve plate (8) is higher than the top wall of the exhaust flow channel (5) and the exhaust hole (7) of the valve plate.

3. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: The height of the accommodating cavity is higher than the height of the valve plate (8), and the width of the accommodating cavity is greater than or equal to twice the width of the valve plate (8).

4. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: An inwardly concave flow-guiding cone portion (11) is formed between the end surface of the valve plate (8) facing the airflow direction and the valve plate through hole (9), and the flow-guiding cone portion (11) is used for guiding and moderating the airflow.

5. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: The longitudinal section of the valve plate exhaust hole (7) on the valve plate (6) is in the shape of an enlarged bulb.

6. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: The height dimension of the accommodating cavity above the valve plate (8) is less than or equal to the diameter dimension of the valve plate through hole (9) and greater than or equal to the radius dimension of the valve plate through hole (9).

7. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: One end of the exhaust flow channel (5) away from the valve plate (6) is connected to the exhaust cavity (4).

8. The exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to claim 1, characterized in that: The radial axes of the valve plate exhaust hole (7), the valve plate through hole (9) and the exhaust flow channel (5) are located on the same straight line.

9. An exhaust flow channel structure for reducing the starting voltage of a refrigerator compressor according to any one of claims 1 to 8, characterized in that: The valve plate (8) is made of an elastic material with resilience.

Images