Baffle and compressor comprising same

Abstract

The utility model provides a baffle and a compressor comprising the same. The baffle is used in the compressor, the compressor comprises a pump body and a silencer, the pump body comprises an upper cylinder cover, the silencer is arranged on the side, close to a motor, of the upper cylinder cover, and the baffle comprises at least one shielding part which is attached to at least part of the outer wall of the silencer and extends outwards in the direction away from the silencer; an included angle theta is formed between the plane where the shielding part is located and the plane where the silencer is located; and the circulating holes are formed between the two adjacent shielding parts. The baffle is arranged on the outer wall of the silencer, and the shielding part can prevent lubricating oil from guiding upwards under the action of a flow field, so that the quantity of the lubricating oil entering the upper space of the motor is reduced, the quantity of oil discharged out of the compressor along with a refrigerant is reduced, and the quantity of the lubricating oil falling back to an oil pool at the bottom of the compressor is increased; the stability of the lower oil pool surface of the compressor is improved, and the working reliability of the compressor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, concretely relates to a baffle and including its compressor. BACKGROUND

[0002] During the operation of the compressor, the high-speed rotation of the motor rotor and the high-pressure gas at the exhaust port of the pump body form a turbulent flow field, which easily causes the lubricating oil to reach the upper cavity of the motor assembly together with the refrigerant gas. Moreover, the oil return of the motor channel causes impact on the oil pool, disturbs the stability of the oil pool, and also causes the lubricating oil to reach the upper cavity of the motor assembly together with the refrigerant gas. Furthermore, due to the influence of the exhaust structure, the pressure of the lower space of the motor is usually greater than the pressure of the upper space of the motor, and the lubricating oil in the upper cavity of the motor is not easy to return to the oil pool in the lower part of the compressor, which causes the oil level of the compressor to decrease, and the reliability of the compressor to decrease. SUMMARY

[0003] In view of the problems in the prior art, the utility model aims to provide a baffle and a compressor comprising the same, to improve the stability of the oil level of the oil pool of the compressor, to reduce the oil output rate of the compressor, and to improve the working reliability of the compressor.

[0004] The utility model embodiment provides a baffle for use in a compressor, wherein the compressor comprises a pump body and a muffler, the pump body comprises an upper cylinder cover, the muffler is arranged on the side of the upper cylinder cover close to the motor, and the baffle comprises:

[0005] at least one shielding part, which is in contact with at least part of the outer wall of the muffler and extends outward in a direction away from the muffler, the plane on which the shielding part is located and the plane on which the muffler is located have an included angle θ, and there is a gap between the side of the shielding part away from the muffler and the upper cylinder cover;

[0006] a flow-through hole arranged between two adjacent shielding parts.

[0007] In some embodiments, the baffle further comprises a mounting part arranged on the side of the shielding part close to the muffler.

[0008] In some embodiments, the included angle θ satisfies 5°≤θ≤15°.

[0009] In some embodiments, a plurality of through holes penetrating in the axial direction of the upper cylinder cover are arranged on the circumference of the upper cylinder cover, and the flow-through holes and the through holes are arranged alternately.

[0010] In some embodiments, the baffle is integrally formed.

[0011] In some embodiments, the baffle comprises a plurality of separate shielding parts, and at least one mounting part is arranged on each shielding part.

[0012] In some embodiments, the side of the baffle facing away from the muffler is located on the circumference of an outer circle with a diameter D1, and the outer diameter of the upper cylinder head of the compressor is D2, and the following is satisfied: 4mm < D2-D1 < 10mm.

[0013] In some embodiments, the side of the baffle close to the muffler is located on the circumference of an inner circle with a diameter d1, and the outer wall diameter of the muffler is d2, and the following is satisfied: 2mm < d1-d2 < 6mm.

[0014] Embodiments of the utility model also provide a compressor which comprises the baffle as claimed in any one of the preceding items.

[0015] The baffle and the compressor comprising the same provided by the utility model have the following advantages:

[0016] By arranging the baffle on the outer wall of the muffler, the shielding part can block the lubricating oil from being guided upward under the action of the flow field, thereby reducing the amount of lubricating oil entering the upper space of the motor, reducing the amount of oil discharged out of the compressor along with the refrigerant, increasing the amount of lubricating oil falling back to the oil pool at the bottom of the compressor, improving the stability of the oil pool surface at the bottom of the compressor, and thereby improving the reliability of the compressor in operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0018] Figures 1 to 3 is a schematic view of the baffle of an embodiment of the utility model at different angles;

[0019] Figure 4 is a structural schematic view of a compressor provided with the baffle of an embodiment of the utility model;

[0020] Figure 5 is Figure 4 is an enlarged view of the position of the dashed box of

[0021] Figures 6 to 8 is a schematic view of the baffle of another embodiment of the utility model at different angles;

[0022] Figure 9 is an oil-gas distribution nephogram of a compressor in the prior art at a moment during operation;

[0023] Figure 10 is an oil-gas distribution nephogram of a compressor of an embodiment of the utility model at a moment during operation.

[0024] REFERENCE SIGNS:

[0025] 10 baffle

[0026] 11. Shielding section

[0027] 12 Flow holes

[0028] 13 Installation Department

[0029] 100 compressor

[0030] 110 Pump Body

[0031] 111 Upper cylinder head

[0032] 120 silencer

[0033] 200 oil clusters Detailed Implementation

[0034] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0035] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0036] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] It is to be further understood that the terms "comprises", "comprising", "includes", "including", "contains", "containing", "consists" and / or "consisting" specify the presence of stated features, steps, operations, elements, components, items, categories, and / or groups but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, items, categories, and / or groups thereof. The terms "or" and "and / or" as used herein are to be interpreted as inclusive or, meaning any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

[0038] To solve the problems in the prior art, the utility model provides a baffle for a compressor, the compressor comprising a pump body and a silencer, the pump body comprising an upper cylinder cover, the silencer being arranged on the side of the upper cylinder cover close to a motor, the baffle comprising: at least one shielding part, which is in contact with at least part of the outer wall of the silencer and extends outward in a direction away from the silencer, the plane in which the shielding part is located and the plane in which the silencer is located having an included angle θ, and the side of the shielding part away from the silencer and the upper cylinder cover having a spacing; and a flow-through hole arranged between two adjacent shielding parts. In the technical solution, the baffle is arranged outside the silencer, the amount of lubricating oil entering the upper space of the motor is reduced, the amount of lubricating oil discharged out of the compressor along with the refrigerant is reduced, the amount of lubricating oil returning to the oil pool at the bottom of the compressor is increased, the stability of the oil pool surface at the bottom of the compressor is improved, and the reliability of the compressor in operation is improved.

[0039] The baffle provided by the utility model will be further described below in combination with the drawings and specific embodiments. It can be understood that the specific embodiments shown are not intended to limit the protection scope of the utility model.

[0040] Figures 1 to 3 Fig. 1 shows a schematic view of the baffle provided by an embodiment of the utility model at different angles; Figure 4 And Figure 5 Fig. 2 shows a schematic view of a compressor provided with the baffle provided by an embodiment of the utility model. In combination with Fig. 1 and Fig. 2, Figures 1 to 5 It can be seen that the baffle 10 provided by the embodiment of the utility model comprises a shielding part 11 and a flow-through hole 12. The baffle 10 is used in a compressor 100, and the compressor 100 comprises a pump body 110 and a silencer 120 arranged on the upper end of the pump body 110. The shielding part 11 is in contact with at least part of the outer wall of the silencer 120 and extends outward in a direction away from the silencer 120; and the flow-through hole 12 is arranged between two adjacent shielding parts 11.

[0041] By setting a baffle 10 on the outer wall of the muffler 120, the shielding part 11 can block the lubricating oil from flowing upward under the action of the flow field, thereby reducing the amount of lubricating oil entering the upper space of the motor, reducing the amount of oil discharged with the refrigerant from the compressor 100, increasing the amount of lubricating oil falling back to the oil sump at the bottom of the compressor 100, improving the stability of the oil sump surface at the bottom of the compressor 100, and thus improving the reliability of the compressor operation.

[0042] The flow hole 12 can accelerate the return of lubricating oil from the motor channel to the bottom oil sump of the compressor. On the other hand, it can connect the lower space of the motor with the upper space, preventing excessive pressure in the lower space of the motor and making the return of lubricating oil from the upper space of the motor to the bottom oil sump more smoothly.

[0043] Furthermore, such as Figures 2 to 4 As shown, the baffle 10 also includes a mounting portion 13, located on the side of the shielding portion 11 near the muffler 120. The mounting portion 13 secures the shielding portion 11 to the outer wall of the muffler chamber of the muffler 120. The mounting portion 13 facilitates the securing of the shielding portion 11 to the outer wall of the muffler chamber of the muffler 120. Furthermore, the mounting portion 13 can be connected to the muffler 120 by welding or gluing, etc.

[0044] Further, please refer to Figure 4 and Figure 5 The pump body 110 includes an upper cylinder head 111, and a muffler 120 is located on the side of the upper cylinder head 111 near the motor. The plane containing the shield 11 and the plane containing the muffler 120 form an angle θ, meaning the shield 11 is an inclined surface. By setting the shield 11 as an inclined surface, the lubricating oil flowing back to the upper surface of the baffle 10 can be directly and quickly returned to the oil sump, improving the oil return efficiency.

[0045] Furthermore, there is a gap between the side of the shield 11 away from the muffler 120 and the upper cylinder head 111, so that the lubricating oil flowing downward along the housing of the compressor 100 can flow back to the oil sump from below the shield 11 through this gap, in order to prevent the upward airflow discharged from the muffler 120 above the shield 11 from carrying away the lubricating oil flowing downward along the housing of the compressor 100 away from the compressor 100 again.

[0046] Furthermore, the angle θ between the plane where the shielding part 11 is located and the plane where the muffler 120 is located satisfies: 5°≤θ≤15°. By limiting the tilt angle of the shielding part 11, a better oil return effect is achieved.

[0047] Further, the upper cylinder cover 111 is provided with a plurality of through holes (not shown in the figure) penetrating along the axial direction thereof, and the flow-through holes 12 are arranged alternately with the through holes. The through holes on the upper cylinder cover 111 are used for reducing weight and improving oil return efficiency, and the alternate arrangement of the flow-through holes 12 and the through holes can avoid the lubricating oil flowing upward through the through holes of the upper cylinder cover 111, and at the same time, avoid the oil return of the motor channel directly impacting the oil pool, so that the liquid level of the oil pool is less fluctuated.

[0048] Further, the baffle 10 is integrally formed in the embodiment, so that the manufacturing steps of the baffle 10 can be simplified. Further, the muffler 120 and the baffle 10 can also be integrally formed, so that the installation steps of the muffler 120 and the baffle 10 can be simplified.

[0049] As shown in FIG. 1, Figures 6 to 8 In another embodiment, the baffle 10 includes a plurality of separated shielding parts 11, and each shielding part 11 is provided with at least one mounting part 13, that is, the baffle 10 is in a split type. The split type baffle 10 can save material and reduce the cost of the baffle 10. As shown in FIG. 2, Figures 6 to 8 The baffle 10 includes three separated shielding parts 11, each shielding part 11 is provided with one mounting part 13, each shielding part 11 is attached to part of the outer wall of the cavity part of the muffler 120, and the flow-through holes 12 are arranged between the adjacent two shielding parts 11.

[0050] Further, the side of the shielding part 11 away from the muffler 120 is located on the circumference of an outer circle, the diameter of the outer circle is D1, the outer diameter of the upper cylinder cover 111 of the compressor is D2, the upper cylinder cover 111 is connected to the inner wall of the compressor shell, and D1 < D2. This arrangement can make the lubricating oil flowing along the inner wall of the shell quickly return to the oil pool, thereby improving the oil return efficiency. Preferably, in some embodiments, D1 and D2 satisfy: 4mm < D2-D1 < 10mm.

[0051] The side of the shielding part 11 close to the muffler 120 is located on the circumference of an inner circle, the diameter of the inner circle is d1, the diameter of the outer wall of the muffler 120 is d2, and d1 > d2. This arrangement can make the lubricating oil flowing to the upper surface of the muffler 120 quickly return to the oil pool, thereby improving the oil return efficiency. Preferably, in some embodiments, d1 and d2 satisfy: 2mm < d1-d2 < 6mm.

[0052] Further, the utility model discloses an embodiment also provides a kind of compressor, including the baffle 10 as described above, the compressor can obtain all technical effects of above-mentioned baffle 10, this place is not repeated here.For further confirming the beneficial effects of the compressor provided by the utility model, the oil-gas distribution in the exhaust cavity of the compressor before and after setting baffle 10 is detected using simulation experiment. Figure 9 And Figure 10 Respectively show the oil-gas distribution nephogram of the compressor at the same time when running before and after setting baffle. Figure 9And Figure 10 It can be seen that, at the same time, the compressor without the baffle 10 has an oil mass at the lower part of the motor (the position shown by the dashed black box), while the compressor with the baffle 10 has no oil mass at the lower part of the motor (the position shown by the dashed black box). Therefore, it is shown that, after the baffle 10 is added, the flow field of the compressor during operation weakens the flow guiding effect of the lubricating oil, the amount of lubricating oil distributed to the motor channel is reduced, and the stability of the oil surface of the oil pool at the bottom of the compressor is improved.

[0053] Further, the average flow of lubricating oil of the compressor without the baffle 10 and the compressor with the baffle 10 in one operating cycle is calculated through simulation experiments. Table 1 shows the comparison results of the average flow of lubricating oil of the compressor without the baffle 10 and the compressor with the baffle 10 in one operating cycle.

[0054] Table 1 Average flow of lubricating oil of the compressor without the baffle 10 and the compressor with the baffle 10 in one operating cycle.

[0055]

[0056] According to the above table, after the baffle 10 is used, the oiling amount on the rotor through hole and the stator cutting edge is reduced, and the oil return amount of the gap between the stator and the rotor and the winding gap is increased, so that the oil surface height of the compressor lubricating oil is improved.

[0057] In summary, the baffle provided by the utility model and the compressor comprising the same have the following advantages:

[0058] By arranging the baffle on the outer wall of the muffler, the shielding part can block the lubricating oil from being guided upward under the action of the flow field, thereby reducing the amount of lubricating oil entering the upper space of the motor, reducing the oil discharge amount with the refrigerant out of the compressor, increasing the amount of lubricating oil falling back to the oil pool at the bottom of the compressor, improving the stability of the oil surface of the oil pool at the bottom of the compressor, and further improving the reliability of the compressor.

[0059] The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as falling within the protection scope of the utility model.

Claims

1. A baffle for use in a compressor, the compressor including a pump body and a muffler, the pump body including an upper cylinder head, the muffler being provided on a side of the upper cylinder head near a motor, characterized by, The baffle comprises: at least one shielding part, which is in close contact with at least part of the outer wall of the muffler and extends outward in a direction away from the muffler, a plane in which the shielding part is located and a plane in which the muffler is located have an included angle θ, and a side of the shielding part away from the muffler has a spacing with the upper cylinder cover; a flow-through hole, which is arranged between two adjacent shielding parts.

2. The baffle of claim 1, wherein The baffle further comprises a mounting part, which is arranged on a side of the shielding part close to the muffler.

3. The baffle of claim 1, wherein The included angle θ satisfies 5°≤θ≤15°.

4. The baffle of claim 1, wherein The upper cylinder cover is provided with a plurality of through holes penetrating in an axial direction thereof in a circumferential direction, and the flow-through hole and the through hole are arranged alternately.

5. The baffle of claim 2, wherein, The baffle is integrally formed.

6. The baffle of claim 2, wherein, The baffle comprises a plurality of separate shielding parts, and at least one mounting part is arranged on each shielding part.

7. The baffle of claim 1, wherein A side of the shielding part away from the muffler is located on a circumference of an outer circle, a diameter of the outer circle is D1, an outer diameter of the upper cylinder cover of the compressor is D2, and 4mm<D2-D1<10mm is satisfied.

8. The baffle of claim 1, wherein, A side of the shielding part close to the muffler is located on a circumference of an inner circle, a diameter of the inner circle is d1, a diameter of the outer wall of the muffler is d2, and 2mm<d1-d2<6mm is satisfied.

9. A compressor characterized by, The baffle comprises the baffle according to any one of claims 1 to 8.

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