Pump body assembly, rotor compressor and air conditioner

Abstract

The utility model provides a pump body assembly, a rotor compressor and an air conditioner, the pump body assembly comprises an air cylinder, an upper flange, a lower flange, an upper silencer and a bolt, the bolt sequentially penetrates through the upper flange, the air cylinder and the lower flange; the end face, opposite to the lower flange, of the upper flange is an upper end face, an upper counter bore is formed in the upper end face, the bolt is arranged in the upper counter bore in a penetrating mode, and a nut of the bolt is completely sunken in the upper counter bore. The upper silencer covers the upper end face and covers the upper counter bore, so that the technical problem that in the prior art, the size of an inner cavity of an upper silencer of a rotor compressor is small can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a pump body component, a rotor compressor and an air conditioner. Background Art

[0002] As the power source and heart of the entire air conditioning system, the rotary compressor plays a crucial role. With people's ever-increasing lifestyle demands, the demand for air conditioner comfort is growing. Low operating noise is a key factor in user comfort. Air conditioner noise primarily originates from the compressor pump, making compressor noise reduction crucial for achieving a quieter air conditioner.

[0003] The existing compressor pump body includes a shaft muffler, a flange assembly, a cylinder assembly, a rotor and a crankshaft. The muffler and the flange assembly form a muffler chamber. The refrigerant gas compressed by the cylinder assembly enters the muffler chamber from the compression chamber of the cylinder assembly through the exhaust port of the flange assembly to achieve silencing and noise reduction. The refrigerant gas after silencing and noise reduction is discharged from the exhaust hole opened on the muffler.

[0004] Since the pump body and flange assembly are fixedly connected by bolts, such as Figure 8 and Figure 9 The nut of the bolt causes the muffler covered on the flange to have to be provided with a giveway structure to avoid the nut of the bolt, which makes the inner cavity volume of the muffler smaller and the silencing effect insufficient.

[0005] How to increase the inner cavity volume of the muffler is a technical problem that urgently needs to be solved. Utility Model Content

[0006] Therefore, the utility model provides a pump body assembly, a rotary compressor and an air conditioner, which can solve the technical problem of the small inner cavity volume of the upper muffler of the rotary compressor in the prior art.

[0007] In the first aspect, the utility model provides a pump body assembly, which is applied to a rotary compressor, including a cylinder, an upper flange, a lower flange, an upper muffler and bolts, wherein the bolts pass through the upper flange, the cylinder and the lower flange in sequence; the end face of the upper flange facing away from the lower flange is the upper end face, and the upper end face is provided with an upper countersunk hole, and the bolt is passed through the upper countersunk hole, and the nut of the bolt is completely sunken in the upper countersunk hole; the upper muffler covers the upper end face and covers the upper countersunk hole, and an upper muffler cavity is formed between the upper muffler and the upper end face.

[0008] In some embodiments, the end face of the lower flange facing away from the upper flange is the lower end face, the lower end face is provided with a sinking hole, the bolt is passed through the sinking hole, a nut is provided on the bolt, and the nut is provided in the sinking hole; the pump body assembly also includes a lower muffler, the lower muffler covers the lower end face and covers the sinking hole, and a lower muffler cavity is formed between the lower muffler and the lower end face.

[0009] In some embodiments, the upper flange is provided with a flow hole, and the outer edge of the upper muffler is provided with a notch, and the notch is opposite to the flow hole.

[0010] In some embodiments, the upper muffler is fixed to the upper flange via upper screws; or, the upper muffler is fixed to the upper flange via welding; or, the upper muffler and the upper flange are bonded together; or, the upper muffler and the upper flange are threaded together.

[0011] In some embodiments, the upper end surface is provided with a circular sunken surface, an annular surface is provided around the sunken surface, and the upper muffler is interference fit with the annular surface.

[0012] In some embodiments, the lower muffler is fixed to the lower flange via lower screws; or, the lower muffler is fixed to the lower flange via welding.

[0013] In some embodiments, there are at least two cylinders.

[0014] In some embodiments, the upper flange is provided with a boss facing away from the lower flange, a through hole is provided in the middle of the upper muffler, the through hole is sleeved on the outer periphery of the boss, and a gap is formed between the outer peripheral surface of the boss and the inner peripheral surface of the boss.

[0015] In a second aspect, the present invention further provides a rotor compressor comprising the pump body assembly.

[0016] In a third aspect, the present invention further provides an air conditioner comprising the rotor compressor.

[0017] The utility model provides a countersunk hole on the upper flange, and the nut of the bolt is arranged in the countersunk hole, thereby avoiding the interference between the upper muffler and the upper flange. In this way, the volume of the inner cavity of the upper muffler can be larger, thereby improving the sound-absorbing effect of the upper muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0019] Figure 1 It is a cross-sectional view of the pump body assembly of the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the appearance of the pump body assembly of an embodiment of the utility model;

[0021] Figure 3 This is an embodiment of the utility model Figure 2 A top view of

[0022] Figure 4 1 is a schematic diagram of the upper muffler of an embodiment of the present utility model along the axial direction of the rotating shaft;

[0023] Figure 5 This is a radial schematic diagram of the upper muffler of an embodiment of the utility model along the rotating shaft;

[0024] Figure 6 This is a schematic diagram of the lower muffler of an embodiment of the utility model along the axial direction of the rotating shaft;

[0025] Figure 7 This is a schematic diagram of an embodiment of the present invention along the radial direction of the rotating shaft;

[0026] Figure 8 This is a schematic diagram of the structure of the pump assembly when an upper muffler is provided in the prior art;

[0027] Figure 9 This is a schematic diagram of the structure of the pump assembly when a lower muffler is provided in the prior art;

[0028] The accompanying drawings are:

[0029] 1. Upper flange; 2. Lower flange; 3. Cylinder; 101. Upper muffler; 201. Lower muffler; 102. Upper countersunk hole; 202. Lower countersunk hole; 4. Bolt; 401. Nut; 402. Nut; 501. Notch; 502. Flow hole; 503. Circular countersunk surface; 504. Annular surface; 505. Boss; 506. Outflow hole; 507. Spacer; 508. Partition; 6. Rotating shaft. DETAILED DESCRIPTION

[0030] The following will be combined with the 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 some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0034] The utility model provides a pump body component, a rotor compressor and an air conditioner, which can solve the technical problem of the small inner cavity volume of the upper muffler of the rotor compressor in the prior art.

[0035] See also Figure 1-7As shown, according to an embodiment of the present invention, a pump body assembly is applied to a rotary compressor, including a cylinder 3, an upper flange 1, a lower flange 2, an upper muffler 101 and a bolt 4, wherein the bolt 4 passes through the upper flange 1, the cylinder 3 and the lower flange 2 in sequence; the end face of the upper flange 1 facing away from the lower flange 2 is the upper end face, and the upper end face is provided with an upper countersunk hole 102, the bolt 4 is passed through the upper countersunk hole 102, and the nut 401 of the bolt 4 is completely sunken in the upper countersunk hole 102; the upper muffler 101 covers the upper end face and covers the upper countersunk hole 102, and an upper muffler cavity is formed between the upper muffler 101 and the upper end face.

[0036] By setting an upper countersunk hole 102 on the upper end face of the upper flange 1, the nut 401 of the bolt 4 can sink into the upper countersunk hole 102. When the muffler is covered on the upper flange 1, there is no need to avoid the nut 401 of the bolt 4 (the upper muffler 101 and the nut 401 will not interfere with each other). The inner cavity volume of the muffler becomes larger, so that the flow resistance of the high-pressure gas discharged by the compressor into the upper muffler 101 is smaller, which is conducive to improving the silencing effect and reducing the noise generated by the pump body assembly. Further, it can enable the pump body assembly to operate at a higher power, thereby improving the working efficiency of the pump body assembly. Since there is no need to avoid the nut 401 of the bolt 4, the inner surface of the inner cavity of the muffler is a relatively coherent curved surface, similar to a hemisphere, which reduces the difficulty of processing and producing the upper muffler 101 and helps reduce costs.

[0037] Preferably, Figure 1 、 Figure 6 and Figure 7 As shown, the end face of the lower flange 2 facing away from the upper flange 1 is the lower end face, and the lower end face is provided with a sinking hole 202, and the bolt 4 is passed through the sinking hole 202. A nut 402 is provided on the bolt 4, and the nut 402 is arranged in the sinking hole 202; the pump body assembly also includes a lower muffler 201, and the lower muffler 201 is covered on the lower end face and covers the sinking hole 202, and a lower muffler cavity is formed between the lower muffler 201 and the lower end face.

[0038] By providing a countersunk hole 202 on the lower end surface, the bolt 4 passes through the lower flange 2, and the nut 402 is positioned within the countersunk hole 202 and engages with the bolt 4. This eliminates the need for the lower muffler 201 to avoid the nut 402, increasing the volume of the lower muffler 201's internal cavity, thereby improving the muffler's silencing effect and reducing noise generated by the pump assembly.

[0039] Preferably, Figure 1 、 Figure 6 and Figure 7As shown, the upper flange 1 is provided with a flow hole 502 , and the outer edge of the upper muffler 101 is provided with a notch 501 , and the notch 501 is opposite to the flow hole 502 .

[0040] As the lubricating oil flowing out of the high-pressure gas enters the high-pressure chamber of the compressor, it flows downward under the action of gravity, passing through the gap 501 and the flow hole 502 into the oil pool below. This allows the lubricating oil to flow back to the oil pool in a timely manner after lubrication, avoiding oil shortage. The provision of the gap 501 prevents the muffler from reducing the effective flow area of ​​the flow hole 502 or preventing the muffler from completely covering the flow hole 502.

[0041] Preferably, the upper muffler 101 is fixed to the upper flange 1 by upper screws; or, the upper muffler 101 is fixed to the upper flange 1 by welding; or, the upper muffler 101 and the upper flange 1 are bonded together; or, the upper muffler 101 and the upper flange 1 are connected together by threads.

[0042] Preferably, Figure 1 As shown, the upper end surface is provided with a circular sunken surface 503 , and an annular surface 504 is provided around the sunken surface. The upper muffler 101 is interference-fitted with the annular surface 504 .

[0043] A circular sunken surface 503 is provided, and the upper muffler 101 is fitted with the circular sunken surface 503. The upper muffler 101 is interference fit with the annular surface 504 to position and fix the upper muffler 101 to prevent the upper muffler 101 from shifting when the pump body assembly generates vibration during operation.

[0044] Preferably, the lower muffler 201 is fixed to the lower flange 2 via lower screws; or, the lower muffler 201 is fixed to the lower flange 2 via welding.

[0045] Preferably, Figure 1 As shown, there are at least two cylinders 3.

[0046] The pump body assembly is provided with at least two cylinders 3, which improves the working efficiency of the pump body assembly.

[0047] The pump body assembly further includes a partition plate 508 disposed between two adjacent cylinders 3 .

[0048] Preferably, Figure 1 As shown, the upper flange 1 is provided with a boss 505 facing away from the lower flange 2, and an outflow hole 506 is provided in the middle of the upper muffler 101. The outflow hole 506 is sleeved on the outer periphery of the boss 505, and a gap 507 is formed between the outer peripheral surface of the boss 505 and the inner peripheral surface of the boss 505.

[0049] The high-pressure gas entering the upper muffler 101 flows out from the gap 507 into the high-pressure chamber.

[0050] A gap 507 is formed between the outer circumference of the boss 505 and the inner circumference of the boss 505. High-pressure gas flows out through the gap 507, eliminating the need for an exhaust hole in the upper muffler 101. This ensures the integrity and structural strength of the upper muffler 101 and prevents vibration of the upper muffler 101 due to insufficient structural strength. This further improves the muffler effect of the upper muffler 101.

[0051] The pump body assembly includes a rotating shaft 6, which passes through the upper flange 1, the cylinder 3 and the lower flange 2 in sequence.

[0052] The utility model provides a rotor compressor, comprising the pump body assembly.

[0053] The utility model also provides an air conditioner, comprising the rotor compressor.

[0054] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0055] 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, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. Such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A pump assembly, used in a rotary compressor, comprising a cylinder (3), an upper flange (1), a lower flange (2), an upper muffler (101) and bolts (4), characterized in that: The bolt (4) passes through the upper flange (1), the cylinder (3) and the lower flange (2) in sequence; the end face of the upper flange (1) facing away from the lower flange (2) is the upper end face, and the upper end face is provided with an upper countersunk hole (102), the bolt (4) is passed through the upper countersunk hole (102), and the nut (401) of the bolt (4) is completely sunken in the upper countersunk hole (102); the upper muffler (101) covers the upper end face and covers the upper countersunk hole (102), and an upper muffler cavity is formed between the upper muffler (101) and the upper end face.

2. The pump assembly according to claim 1, characterized in that The end face of the lower flange (2) facing away from the upper flange (1) is the lower end face, and the lower end face is provided with a sinking hole (202), the bolt (4) is inserted into the sinking hole (202), and a nut (402) is provided on the bolt (4), and the nut (402) is arranged in the sinking hole (202); the pump body assembly also includes a lower muffler (201), the lower muffler (201) covers the lower end face and covers the sinking hole (202), and a lower muffler cavity is formed between the lower muffler (201) and the lower end face.

3. The pump assembly according to claim 1, characterized in that The upper flange (1) is provided with a circulation hole (502), and the outer edge of the upper muffler (101) is provided with a notch (501), and the notch (501) is opposite to the circulation hole (502).

4. The pump assembly according to claim 1, characterized in that The upper muffler (101) is fixed to the upper flange (1) via upper screws; or, the upper muffler (101) is fixed to the upper flange (1) via welding; or, the upper muffler (101) and the upper flange (1) are bonded together; or, the upper muffler (101) and the upper flange (1) are connected together via threads.

5. The pump assembly according to claim 1, characterized in that The upper end surface is provided with a circular sunken surface (503), and an annular surface (504) is provided around the sunken surface. The upper muffler (101) is interference-fitted with the annular surface (504).

6. The pump assembly according to claim 2, characterized in that The lower muffler (201) is fixed to the lower flange (2) via lower screws; or, the lower muffler (201) is fixed to the lower flange (2) via welding.

7. The pump assembly according to claim 1, characterized in that There are at least two cylinders (3).

8. The pump assembly according to claim 1, wherein: The upper flange (1) is provided with a boss (505) facing away from the lower flange (2); an outflow hole (506) is provided in the middle of the upper muffler (101); the outflow hole (506) is sleeved on the outer periphery of the boss (505); and a gap (507) is formed between the outer peripheral surface of the boss (505) and the inner peripheral surface of the boss (505).

9. A rotary compressor, characterized in that: The pump body assembly comprises the pump body assembly according to any one of claims 1 to 8.

10. An air conditioner, characterized in that: Including the rotor compressor according to claim 9.

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