Pump body assembly, rotor compressor and air conditioner

Abstract

The invention provides a pump body assembly, a rotor compressor and an air conditioner. The pump body assembly comprises an upper flange, an upper air cylinder, a partition plate, a lower air cylinder and a lower flange which are sequentially arranged from top to bottom. The upper flange and the upper cylinder are positioned through an upper positioning screw, and an upper positioning thread in threaded connection with the upper positioning screw is formed on one of the upper flange and the upper cylinder; the lower flange and the lower cylinder are positioned through a lower positioning screw, and a lower positioning thread in threaded connection with the lower positioning screw is formed on one of the lower flange and the lower cylinder; the upper flange, the upper air cylinder, the partition plate, the lower air cylinder and the lower flange are locked through locking screws, and locking threads in threaded connection with the locking screws are formed on one of the upper flange, the partition plate and the lower flange. The number of screws in threaded connection with the upper cylinder and the lower cylinder is reduced, deformation of the upper cylinder and the lower cylinder during positioning and locking of the pump body assembly is reduced, power consumption and abrasion of the compressor are reduced, the height of the upper cylinder and the height of the lower cylinder are reduced, and the energy efficiency of the compressor is improved.

Description

Technical Field

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

[0002] In the existing twin-cylinder rotor compressor, when the upper flange and the upper cylinder are positioned by the upper positioning screws, the positioning threads are formed on the upper cylinder; when the lower flange and the lower cylinder are positioned by the lower positioning screws, the positioning threads are formed on the lower cylinder; when the upper flange, the upper cylinder, the partition, the lower cylinder and the lower flange are locked by the locking screws, the locking threads are formed on the upper cylinder; in this way, on the one hand, the upper cylinder is easily deformed when the upper positioning screws and the locking screws are locked, resulting in high power consumption and large wear of the compressor; on the other hand, the heights of the two cylinders are relatively high, resulting in poor energy efficiency of the compressor. Summary of the invention

[0003] In view of this, the present invention provides a pump body assembly, a rotor compressor and an air conditioner to solve the problems in the existing rotor compressor that the upper positioning screw and the locking screw are easily deformed when being tightened, resulting in high power consumption and large wear of the compressor, and the height of the two cylinders is relatively high, resulting in poor energy efficiency of the compressor.

[0004] The present invention provides a pump body assembly for a rotary compressor; the pump body assembly comprises an upper flange, an upper cylinder, a partition, a lower cylinder and a lower flange arranged in sequence from top to bottom;

[0005] The upper flange and the upper cylinder are positioned by upper positioning screws, and an upper positioning thread threadedly connected to the upper positioning screw is formed on one of the upper flange and the upper cylinder;

[0006] The lower flange and the lower cylinder are positioned by a lower positioning screw, and a lower positioning thread threadedly connected to the lower positioning screw is formed on one of the lower flange and the lower cylinder;

[0007] The upper flange, the upper cylinder, the partition, the lower cylinder and the lower flange are locked by locking screws, and a locking thread threadedly connected to the locking screw is formed on one of the upper flange, the partition and the lower flange.

[0008] Further optionally, the upper flange is formed with an upper flange positioning hole, and the upper cylinder is formed with an upper cylinder positioning hole; one of the upper flange positioning hole and the upper cylinder positioning hole is formed with the upper positioning thread; the upper positioning screw is passed through the upper flange positioning hole and the upper cylinder positioning hole, and the upper positioning screw is connected with the upper positioning thread to realize the positioning of the upper flange and the upper cylinder;

[0009] The lower flange is formed with a lower flange positioning hole, and the lower cylinder is formed with a lower cylinder positioning hole; one of the lower flange positioning hole and the lower cylinder positioning hole is formed with a lower positioning thread; the lower positioning screw is passed through the lower flange positioning hole and the lower cylinder positioning hole, and the lower positioning screw is connected to the lower positioning thread to achieve the positioning of the lower flange and the lower cylinder.

[0010] Further optionally, the upper flange is further formed with an upper flange locking hole, the upper cylinder is formed with an upper cylinder locking hole, the partition is formed with a partition locking hole, the lower cylinder is formed with a lower cylinder locking hole, the lower flange is further formed with a lower flange locking hole, and one of the upper flange locking hole and the lower flange locking hole is formed with a locking thread;

[0011] The locking screw includes a first locking screw, which is inserted into the upper flange locking hole, the upper cylinder locking hole, the partition locking hole, the lower cylinder locking hole and the lower flange locking hole. The first locking screw is connected to the locking thread to achieve overall locking of the upper flange, upper cylinder, partition, lower cylinder and lower flange.

[0012] Further optionally, when the upper positioning screw is connected to the upper positioning thread, the maximum tightening force of the upper positioning screw is F1, when the first locking screw is connected to the locking thread, the maximum tightening force of the first locking screw is F2, and when the lower positioning screw is connected to the lower positioning thread, the maximum tightening force of the lower positioning screw is F3; F1, F2 and F3 satisfy:

[0013] F1 <F2,F3<F2。

[0014] Further optionally, the upper flange is also formed with an upper flange locking hole, and the upper cylinder is formed with an upper cylinder locking hole; the partition is formed with a partition locking hole, and the partition locking hole includes a partition upper locking hole and a partition lower locking hole which are arranged relatively up and down along the thickness direction of the partition, the partition locking hole is formed with an upper locking thread, and the partition lower locking hole is formed with a lower locking thread; the lower cylinder is formed with a lower cylinder locking hole, and the lower flange is also formed with a lower flange locking hole;

[0015] The locking screw also includes a second locking screw and a third locking screw, the second locking screw is inserted into the locking hole of the upper flange, the locking hole of the upper cylinder and the locking hole on the partition, and the second locking screw is connected to the upper locking thread to achieve the locking of the upper flange, the upper cylinder and the partition;

[0016] The third locking screw is inserted into the locking hole of the lower flange, the locking hole of the lower cylinder and the locking hole of the partition plate. The third locking screw is connected to the lower locking thread to achieve the locking of the lower flange, the lower cylinder and the partition plate.

[0017] Further optionally, when the upper positioning screw is connected to the upper positioning thread, the maximum tightening force of the upper positioning screw is F1', when the second locking screw is connected to the upper locking thread, the maximum tightening force of the second locking screw is F2', when the lower positioning screw is connected to the lower positioning thread, the maximum tightening force of the lower positioning screw is F3', and when the third locking screw is connected to the lower locking thread, the maximum tightening force of the third locking screw is F4'; F1', F2', F3' and F4' satisfy:

[0018] F1' <F2',F1'<F4',F3'<F2',F3'<F4'。

[0019] Further optionally, the height of the partition is H g The heights of the upper cylinder and the lower cylinder are both H q , the H g and H q satisfy:

[0020] H g -H q ≥2mm, 8mm≤H q ≤12mm.

[0021] Further optionally, relative to the axis of the upper flange locking hole, the axis of the upper flange positioning hole is closer to the axis of the upper flange;

[0022] Relative to the axis of the lower flange locking hole, the axis of the lower flange positioning hole is closer to the axis of the lower flange.

[0023] The present invention also provides a rotary compressor, comprising a casing and a pump body assembly as described in any one of the above items; the casing is formed with an installation cavity, and the pump body assembly is arranged in the installation cavity.

[0024] The present invention also provides an air conditioner, comprising the above-mentioned rotary compressor.

[0025] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0026] The upper positioning thread connected to the upper positioning screw thread is formed on one of the upper flange and the upper cylinder, the lower positioning thread connected to the lower positioning screw thread is formed on one of the lower flange and the lower cylinder, and the locking thread connected to the locking screw thread is formed on one of the upper flange, the partition and the lower flange. The number of screws threadedly connected to the upper cylinder and the lower cylinder is reduced, and the deformation of the upper cylinder and the lower cylinder when the pump body assembly is positioned and locked is reduced, the power consumption and wear of the compressor are reduced, the height of the upper cylinder and the lower cylinder is reduced, and the energy efficiency of the compressor is improved. The problems of deformation of the upper cylinder when the upper positioning screw and the locking screw are easily caused when locking in the existing rotor compressor, resulting in high power consumption and large wear of the compressor, and the relatively high height of the two cylinders resulting in poor energy efficiency of the compressor are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] Figure 1a A structural schematic diagram of embodiment 1 of the present invention when positioning the upper flange and the upper cylinder;

[0030] Figure 1b A structural schematic diagram of Embodiment 1 of the present invention when positioning the lower flange and the lower cylinder;

[0031] Figure 1c A structural schematic diagram of Example 1 of the present invention when the upper flange, upper cylinder, partition, lower cylinder and lower flange are locked;

[0032] Figure 2a A schematic structural diagram of Embodiment 2 of the present invention when positioning the upper flange and the upper cylinder;

[0033] Figure 2b A schematic structural diagram of Embodiment 2 of the present invention when positioning the lower flange and the lower cylinder;

[0034] Figure 2cA structural schematic diagram of Example 2 of the present invention when the upper flange, upper cylinder, partition, lower cylinder and lower flange are locked;

[0035] Figure 3a A schematic structural diagram of Embodiment 3 of the present invention when positioning the upper flange and the upper cylinder;

[0036] Figure 3b A schematic structural diagram of Embodiment 3 of the present invention when positioning the lower flange and the lower cylinder;

[0037] Figure 3c A structural schematic diagram of Example 3 of the upper flange, upper cylinder, partition, lower cylinder and lower flange provided by the present invention when locked;

[0038] In the figure:

[0039] 11-upper flange; 111-upper flange positioning hole; 112-upper flange shaft hole; 12-upper cylinder; 121-upper cylinder positioning hole; 122-upper cavity; 13-partition; 131-partition shaft hole; 14-lower cylinder; 141-lower cylinder positioning hole; 142-lower cavity; 15-lower flange; 151-lower flange positioning hole; 152-lower flange shaft hole; 16-upper roller; 17-lower roller;

[0040] 21-upper positioning screw; 22-lower positioning screw;

[0041] 31-first locking screw; 32-second locking screw; 33-third locking screw;

[0042] 41 - long axis; 42 - upper eccentric axis; 43 - intermediate axis; 44 - lower eccentric axis; 45 - short axis. DETAILED DESCRIPTION

[0043] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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 without creative work are within the scope of protection of the present invention.

[0044] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the situation of including at least one.

[0045] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0047] In the pump assembly of the rotary compressor, screws are used to position and lock the various components of the pump assembly. The screws used for positioning are called positioning screws; the screws used for locking are called locking screws. Generally, positioning screws are used to determine the relative position between components, and their torque is generally small, while locking screws are used to tighten components so that the components will not be relatively displaced in the compressor, and the torque is generally large. There are many screws that are both centering screws and locking screws.

[0048] In the existing twin-cylinder rotor compressor, when the upper flange and the upper cylinder are positioned by the upper positioning screws, the positioning threads are formed on the upper cylinder; when the lower flange and the lower cylinder are positioned by the lower positioning screws, the positioning threads are formed on the lower cylinder; when the upper flange, the upper cylinder, the partition, the lower cylinder and the lower flange are locked by the locking screws, the locking threads are formed on the upper cylinder; thus, on the one hand, when the upper positioning screws and the locking screws are locked, local deformation of the upper cylinder is easily caused, especially irregular local deformation of the inner circumference of the cylinder and the sliding vane groove, which has a great impact on the performance fluctuation and reliability of the compressor, resulting in high power consumption and large wear of the compressor; on the other hand, the heights of the two cylinders are relatively high, resulting in poor energy efficiency of the compressor;

[0049] like Figures 1a to 3cAs shown, the present invention creatively provides a pump body assembly for a rotary compressor; the pump body assembly comprises an upper flange 11, an upper cylinder 12, a partition 13, a lower cylinder 14 and a lower flange 15 arranged in sequence from top to bottom; the upper cylinder 12 is formed with an upper cavity 122 and an upper slide groove connected to the upper cavity 122, a rotatable upper roller 16 is arranged in the upper cavity 122, and a slidable upper slide plate is arranged in the upper slide groove; one end of the upper slide plate abuts against the upper roller 16, and an upper elastic member is arranged between the other end of the upper slide plate and the side wall of the upper slide groove; when the upper roller 16 rotates, the upper roller 16 and the upper slide plate are moved in a direction opposite to each other. Under the action of the elastic member, the upper slide can slide in the upper slide groove, so that the upper cavity 122 can achieve air intake and exhaust; the lower cylinder 14 is formed with a lower cavity 142 and a lower slide groove connected to the lower cavity 142, a rotatable lower roller 17 is arranged in the lower cavity 142, and a slidable lower slide is arranged in the lower slide groove; one end of the lower slide abuts against the lower roller 17, and a lower elastic member is arranged between the other end of the lower slide and the side wall of the lower slide groove; when the lower roller 17 rotates, under the action of the lower roller 17 and the lower elastic member, the lower slide can slide in the lower slide groove, so that the lower cavity 142 can achieve air intake and exhaust;

[0050] The upper flange 11 and the upper cylinder 12 are positioned by the upper positioning screw 21, and the upper positioning thread threadedly connected with the upper positioning screw 21 is formed on one of the upper flange 11 and the upper cylinder 12;

[0051] Specifically, the upper flange 11 and the upper cylinder 12 are positioned in the following manner: the upper flange 11 is formed with an upper flange positioning hole 111, and the upper cylinder 12 is formed with an upper cylinder positioning hole 121; one of the upper flange positioning hole 111 and the upper cylinder positioning hole 121 is formed with an upper positioning thread; the upper positioning screw 21 is passed through the upper flange positioning hole 111 and the upper cylinder positioning hole 121, and the upper positioning screw 21 is connected with the upper positioning thread to achieve the positioning of the upper flange 11 and the upper cylinder 12;

[0052] The lower flange 15 and the lower cylinder 14 are positioned by the lower positioning screw 22, and the lower positioning thread threadedly connected with the lower positioning screw 22 is formed on one of the lower flange 15 and the lower cylinder 14;

[0053] Specifically, the lower flange 15 and the lower cylinder 14 are positioned in the following manner: the lower cylinder 14 is formed with a lower cylinder positioning hole 141; one of the lower flange positioning hole 151 and the lower cylinder positioning hole 141 is formed with a lower positioning thread; the lower positioning screw 22 is passed through the lower flange positioning hole 151 and the lower cylinder positioning hole 141, and the lower positioning screw 22 is connected to the lower positioning thread to achieve the positioning of the lower flange 15 and the lower cylinder 14;

[0054] The upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15 are integrally locked together by locking screws, and a locking thread threadedly connected to the locking screw is formed on one of the upper flange 11, the partition 13 and the lower flange 15;

[0055] Specifically, the upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15 can be locked by any of the following two methods:

[0056] The first type is that the upper flange 11 is further formed with an upper flange locking hole, the upper cylinder 12 is formed with an upper cylinder locking hole, the partition 13 is formed with a partition locking hole, the lower cylinder 14 is formed with a lower cylinder locking hole, the lower flange 15 is further formed with a lower flange locking hole, and one of the upper flange locking hole and the lower flange locking hole is formed with a locking thread;

[0057] The locking screws include a first locking screw 31, which is inserted into the upper flange locking hole, the upper cylinder locking hole, the partition locking hole, the lower cylinder locking hole and the lower flange locking hole. The first locking screw 31 is connected to the locking thread to achieve overall locking of the upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15.

[0058] The second type is that the upper flange 11 is also formed with an upper flange locking hole, and the upper cylinder 12 is formed with an upper cylinder locking hole; the partition 13 is formed with a partition locking hole, and the partition locking hole includes a partition upper locking hole and a partition lower locking hole which are arranged relatively up and down along the thickness direction of the partition 13, and the partition locking hole is formed with an upper locking thread, and the partition lower locking hole is formed with a lower locking thread; the lower cylinder 14 is formed with a lower cylinder locking hole, and the lower flange 15 is also formed with a lower flange locking hole;

[0059] The locking screws also include a second locking screw 32 and a third locking screw 33. The second locking screw 32 is inserted into the locking hole of the upper flange, the locking hole of the upper cylinder and the locking hole of the partition. The second locking screw 32 is connected to the upper locking thread to achieve the locking of the upper flange 11, the upper cylinder 12 and the partition 13; the third locking screw 33 is inserted into the locking hole of the lower flange, the locking hole of the lower cylinder and the lower locking hole of the partition. The third locking screw 33 is connected to the lower locking thread to achieve the locking of the lower flange 15, the lower cylinder 14 and the partition 13; in this way, the upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15 can be integrally locked together by the second locking screw 32 and the third locking screw 33;

[0060] The locking thread is not formed on the cylinder, but on the upper flange 11 or the lower flange 15 or the partition 13, so that the local deformation of the cylinder can be transferred to the non-cylinder parts; the number of screws threadedly connected to the upper cylinder 12 and the lower cylinder 14 is reduced, the deformation of the upper cylinder 12 and the lower cylinder 14 when the pump body assembly is positioned and locked is reduced, the reserved gap of the pump body is reduced, the power consumption and wear of the compressor are reduced, the height of the upper cylinder 12 and the lower cylinder 14 is reduced, and the energy efficiency of the compressor is improved. The problem that the upper positioning screw 21 and the locking screw in the existing rotor compressor are easily deformed when locked, resulting in high power consumption and large wear of the compressor, and the height of the two cylinders is relatively high, resulting in poor energy efficiency of the compressor, solves the problem that the deformation reserved gap of the cylinder is large and affects the energy efficiency of the compressor, and solves the problem that the deformation amount of the cylinder caused by the locking force is large, resulting in the inability to reserve a suitable gap, and then the pump body leaks.

[0061] In addition, the upper flange locking hole and the upper flange positioning hole 111 have the following positional relationship: relative to the axis of the upper flange locking hole, the axis of the upper flange positioning hole 111 is closer to the axis of the upper flange 11;

[0062] The lower flange locking hole and the lower flange positioning hole 151 have the following positional relationship: relative to the axis of the lower flange locking hole, the axis of the lower flange positioning hole 151 is closer to the axis of the lower flange 15 .

[0063] The upper flange 11 is formed with an upper flange shaft hole 112, the partition 13 is formed with a partition shaft hole 131, and the lower flange 15 is formed with a lower flange shaft hole 152; the pump body assembly also includes a crankshaft, which includes a long shaft 41, an upper eccentric shaft 42, an intermediate shaft 43, a lower eccentric shaft 44 and a short shaft 45 arranged in sequence from top to bottom; the long shaft 41 and the upper flange shaft hole 112 are rotatably matched through a main bearing, and the short shaft 45 and the lower flange shaft hole 152 are rotatably matched through a secondary bearing; the upper eccentric shaft 42 is rotatably arranged in the upper cavity In the body 122, an upper roller 16 is arranged on the upper eccentric shaft 42; the lower eccentric shaft 44 is rotatably arranged in the lower cavity 142, and a lower roller 17 is arranged on the lower eccentric shaft 44; the intermediate shaft 43 is rotatably arranged in the partition shaft hole 131; when the crankshaft is controlled to rotate, the upper eccentric shaft 42 rotates with the upper roller 16 in the upper cavity 122, and the upper cavity 122 realizes intake and exhaust, and the lower eccentric shaft 44 rotates with the lower roller 17 in the lower cavity 142, and the lower cavity 142 realizes intake and exhaust.

[0064] The present invention further provides a rotary compressor, comprising a casing, a motor and a pump assembly as described in any one of the above; the casing is formed with an installation cavity, the motor and the pump assembly are arranged in the installation cavity, and the motor is located above the pump assembly;

[0065] The motor includes a rotor and a stator, and the rotor is drivingly connected to the long shaft 41; the stator includes a stator core and a stator winding, the stator core is arranged on the side wall of the installation cavity, and the stator winding is wound on the stator core; the rotor is rotatably arranged in the installation cavity; the stator winding is passed through alternating current to make the rotor rotate.

[0066] The rotary compressor further includes an upper cover and a lower cover, wherein the upper cover is arranged at the axial upper end of the casing, and the lower cover is arranged at the axial lower end of the casing, and the upper cover, the casing and the lower cover are arranged to form a closed installation cavity; a base is arranged at the lower end of the casing, and the rotary compressor is fixedly arranged by the base; an exhaust pipe is arranged on the upper cover, and the exhaust pipe is communicated with the installation cavity;

[0067] A gas-liquid separator is arranged on one side of the rotary compressor, and a gas-liquid separator outlet is formed in the gas-liquid separator; the air suction hole of the pump body assembly and the gas-liquid separator outlet are communicated through an air suction pipe.

[0068] The present invention also provides an air conditioner, which includes the rotor compressor described above.

[0069] With respect to the specific setting positions of the upper positioning thread, the lower positioning thread and the locking thread, the present invention proposes four implementation modes, namely, Example 1, Example 2, Example 3 and Example 4.

[0070] Example 1

[0071] like Figure 1a to Figure 1c As shown, the present embodiment proposes that the upper flange 11 is formed with an upper flange positioning hole 111, and the upper cylinder 12 is formed with an upper cylinder positioning hole 121; the upper cylinder positioning hole 121 is formed with an upper positioning thread; the upper positioning screw 21 is sequentially inserted into the upper flange positioning hole 111 and the upper cylinder positioning hole 121 from top to bottom, and the upper positioning screw 21 is connected with the upper positioning thread to realize the positioning and pre-tightening of the upper flange 11 and the upper cylinder 12;

[0072] The lower flange 15 is formed with a lower flange positioning hole 151, and the lower cylinder 14 is formed with a lower cylinder positioning hole 141; the lower cylinder positioning hole 141 is formed with a lower positioning thread; the lower positioning screw 22 is sequentially inserted into the lower flange positioning hole 151 and the lower cylinder positioning hole 141 from bottom to top, and the lower positioning screw 22 is connected with the lower positioning thread to realize the positioning and pre-tightening of the lower flange 15 and the lower cylinder 14;

[0073] The upper flange 11 is also formed with an upper flange locking hole, the upper cylinder 12 is formed with an upper cylinder locking hole, the partition 13 is formed with a partition locking hole, the lower cylinder 14 is formed with a lower cylinder locking hole, the lower flange 15 is also formed with a lower flange locking hole, and the upper flange locking hole is formed with a locking thread;

[0074] The locking screws include a first locking screw 31, which is inserted into the lower flange locking hole, the lower cylinder locking hole, the partition locking hole, the upper cylinder locking hole and the upper flange locking hole from bottom to top. The first locking screw 31 is connected to the locking thread to achieve overall locking of the upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15.

[0075] When the upper positioning screw 21 is connected to the upper positioning thread, the axis of the tightening force of the upper positioning screw 21 is F1, when the first locking screw 31 is connected to the locking thread, the axis of the tightening force of the first locking screw 31 is F2, and when the lower positioning screw 22 is connected to the lower positioning thread, the axis of the tightening force of the lower positioning screw 22 is F3; F1, F2 and F3 satisfy: F1 <F2,F3<F2。

[0076] The locking thread is formed on the upper flange 11, which reduces the number of screws threadedly connected to the upper cylinder 12, reduces the deformation of the upper cylinder 12 when the pump body assembly is locked, reduces the power consumption and wear of the compressor, reduces the height of the upper cylinder 12 and the lower cylinder 14, and improves the energy efficiency of the compressor.

[0077] Example 2

[0078] like Figure 2a to Figure 2c As shown, the present embodiment proposes that the upper flange 11 is formed with an upper flange positioning hole 111, and the upper cylinder 12 is formed with an upper cylinder positioning hole 121; the upper cylinder positioning hole 121 is formed with an upper positioning thread; the upper positioning screw 21 is sequentially inserted into the upper flange positioning hole 111 and the upper cylinder positioning hole 121 from top to bottom, and the upper positioning screw 21 is connected with the upper positioning thread to realize the positioning and pre-tightening of the upper flange 11 and the upper cylinder 12;

[0079] The lower flange 15 is formed with a lower flange positioning hole 151, and the lower cylinder 14 is formed with a lower cylinder positioning hole 141; the lower cylinder positioning hole 141 is formed with a lower positioning thread; the lower positioning screw 22 is sequentially inserted into the lower flange positioning hole 151 and the lower cylinder positioning hole 141 from bottom to top, and the lower positioning screw 22 is connected with the lower positioning thread to realize the positioning and pre-tightening of the lower flange 15 and the lower cylinder 14;

[0080] The upper flange 11 is also formed with an upper flange locking hole, and the upper cylinder 12 is formed with an upper cylinder locking hole; the partition 13 is formed with a partition locking hole, and the partition locking hole includes a partition upper locking hole and a partition lower locking hole which are arranged relatively up and down along the thickness direction of the partition 13, and the partition locking hole is formed with an upper locking thread, and the partition lower locking hole is formed with a lower locking thread; the lower cylinder 14 is formed with a lower cylinder locking hole, and the lower flange 15 is also formed with a lower flange locking hole;

[0081] The locking screws also include a second locking screw 32 and a third locking screw 33. The second locking screw 32 is sequentially inserted into the locking hole of the upper flange, the locking hole of the upper cylinder and the locking hole on the partition from top to bottom, and the second locking screw 32 is connected to the upper locking thread to achieve the locking of the upper flange 11, the upper cylinder 12 and the partition 13; the third locking screw 33 is sequentially inserted into the locking hole of the lower flange, the locking hole of the lower cylinder and the lower locking hole of the partition from bottom to top, and the third locking screw 33 is connected to the lower locking thread to achieve the locking of the lower flange 15, the lower cylinder 14 and the partition 13;

[0082] In this way, the upper flange 11 , the upper cylinder 12 , the partition plate 13 , the lower cylinder 14 and the lower flange 15 can be integrally locked together by the second locking screw 32 and the third locking screw 33 .

[0083] When the upper positioning screw 21 is connected to the upper positioning thread, the axis of the tightening force of the upper positioning screw 21 is F1', when the second locking screw 32 is connected to the upper locking thread, the axis of the tightening force of the second locking screw 32 is F2', when the lower positioning screw 22 is connected to the lower positioning thread, the axis of the tightening force of the lower positioning screw 22 is F3', and when the third locking screw 33 is connected to the lower locking thread, the axis of the tightening force of the third locking screw 33 is F4';

[0084] F1', F2', F3' and F4' meet the following requirements: F1' <F2',F1'<F4',F3'<F2',F3'<F4'。

[0085] The height of the partition 13 is H g The heights of the upper cylinder 12 and the lower cylinder 14 are both H q , H g and H q Satisfaction: H g -H q ≥2mm; H g >H q , so that H q It can be set very small to meet the assembly and locking of the pump body components;

[0086] H q Meet: 8mm≤H q ≤12mm; because when H q When it is less than 12mm, if this solution is not used, the locking length of the thread will be less than 6mm and the locking strength will be seriously affected.

[0087] The locking thread is formed on the partition 13, which reduces the number of screws threadedly connected to the upper cylinder 12, reduces the deformation of the upper cylinder 12 when the pump body assembly is locked, reduces the power consumption and wear of the compressor, reduces the height of the upper cylinder 12 and the lower cylinder 14, and improves the energy efficiency of the compressor.

[0088] Example 3

[0089] like Figure 3a to Figure 3c As shown, the present embodiment proposes that the upper flange 11 is formed with an upper flange positioning hole 111, and the upper flange positioning hole 111 is formed with an upper positioning thread; the upper cylinder 12 is formed with an upper cylinder positioning hole 121; the upper positioning screw 21 is sequentially penetrated in the upper cylinder positioning hole 121 and the upper flange positioning hole 111 from bottom to top, and the upper positioning screw 21 is connected with the upper positioning thread to realize the positioning and pre-tightening of the upper flange 11 and the upper cylinder 12;

[0090] The lower flange 15 is formed with a lower flange positioning hole 151, and the lower flange positioning hole 151 is formed with a lower positioning thread; the lower cylinder 14 is formed with a lower cylinder positioning hole 141; the lower positioning screw 22 is sequentially inserted into the lower cylinder positioning hole 141 and the lower flange positioning hole 151 from top to bottom, and the lower positioning screw 22 is connected with the lower positioning thread to realize the positioning and pre-tightening of the lower flange 15 and the lower cylinder 14;

[0091] The upper flange 11 is also formed with an upper flange locking hole, the upper cylinder 12 is formed with an upper cylinder locking hole, the partition 13 is formed with a partition locking hole, the lower cylinder 14 is formed with a lower cylinder locking hole, the lower flange 15 is also formed with a lower flange locking hole, and the upper flange locking hole is formed with a locking thread;

[0092] The locking screws include a first locking screw 31, which is inserted into the lower flange locking hole, the lower cylinder locking hole, the partition locking hole, the upper cylinder locking hole and the upper flange locking hole from bottom to top. The first locking screw 31 is connected to the locking thread to achieve overall locking of the upper flange 11, the upper cylinder 12, the partition 13, the lower cylinder 14 and the lower flange 15.

[0093] When the upper positioning screw 21 is connected to the upper positioning thread, the maximum tightening force of the upper positioning screw 21 is F1, when the first locking screw 31 is connected to the locking thread, the maximum tightening force of the first locking screw 31 is F2, and when the lower positioning screw 22 is connected to the lower positioning thread, the maximum tightening force of the lower positioning screw 22 is F3;

[0094] F1, F2 and F3 meet the following requirements: F1 <F2,F3<F2。

[0095] Example 4

[0096] The present embodiment proposes that the upper flange 11 is formed with an upper flange positioning hole 111, and the upper flange positioning hole 111 is formed with an upper positioning thread; the upper cylinder 12 is formed with an upper cylinder positioning hole 121; the upper positioning screw 21 is sequentially inserted into the upper cylinder positioning hole 121 and the upper flange positioning hole 111 from bottom to top, and the upper positioning screw 21 is connected with the upper positioning thread to realize the positioning of the upper flange 11 and the upper cylinder 12;

[0097] The lower flange 15 is formed with a lower flange positioning hole 151, and the lower flange positioning hole 151 is formed with a lower positioning thread; the lower cylinder 14 is formed with a lower cylinder positioning hole 141; the lower positioning screw 22 is sequentially inserted into the lower cylinder positioning hole 141 and the lower flange positioning hole 151 from top to bottom, and the lower positioning screw 22 is connected with the lower positioning thread to realize the positioning of the lower flange 15 and the lower cylinder 14;

[0098] The upper flange 11 is also formed with an upper flange locking hole, and the upper cylinder 12 is formed with an upper cylinder locking hole; the partition 13 is formed with a partition locking hole, and the partition locking hole includes a partition upper locking hole and a partition lower locking hole which are arranged relatively up and down along the thickness direction of the partition 13, and the partition locking hole is formed with an upper locking thread, and the partition lower locking hole is formed with a lower locking thread; the lower cylinder 14 is formed with a lower cylinder locking hole, and the lower flange 15 is also formed with a lower flange locking hole;

[0099] The locking screws also include a second locking screw 32 and a third locking screw 33. The second locking screw 32 is sequentially inserted into the locking hole of the upper flange, the locking hole of the upper cylinder and the locking hole on the partition from top to bottom, and the second locking screw 32 is connected to the upper locking thread to achieve the locking of the upper flange 11, the upper cylinder 12 and the partition 13; the third locking screw 33 is sequentially inserted into the locking hole of the lower flange, the locking hole of the lower cylinder and the lower locking hole of the partition from bottom to top, and the third locking screw 33 is connected to the lower locking thread to achieve the locking of the lower flange 15, the lower cylinder 14 and the partition 13;

[0100] In this way, the upper flange 11 , the upper cylinder 12 , the partition plate 13 , the lower cylinder 14 and the lower flange 15 can be integrally locked together by the second locking screw 32 and the third locking screw 33 .

[0101] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A pump assembly for a rotary compressor; characterized in that: The pump body assembly comprises an upper flange (11), an upper cylinder (12), a partition (13), a lower cylinder (14) and a lower flange (15) which are arranged in sequence from top to bottom; The upper flange (11) and the upper cylinder (12) are positioned by an upper positioning screw (21), and an upper positioning thread threadedly connected to the upper positioning screw (21) is formed on one of the upper flange (11) and the upper cylinder (12); The lower flange (15) and the lower cylinder (14) are positioned by a lower positioning screw (22), and a lower positioning thread threadedly connected to the lower positioning screw (22) is formed on one of the lower flange (15) and the lower cylinder (14); The upper flange (11), the upper cylinder (12), the partition (13), the lower cylinder (14) and the lower flange (15) are locked by locking screws, and a locking thread threadedly connected to the locking screw is formed on one of the upper flange (11), the partition (13) and the lower flange (15).

2. The pump assembly according to claim 1, characterized in that: The upper flange (11) is formed with an upper flange positioning hole (111), and the upper cylinder (12) is formed with an upper cylinder positioning hole (121); one of the upper flange positioning hole (111) and the upper cylinder positioning hole (121) is formed with the upper positioning thread; the upper positioning screw (21) is inserted into the upper flange positioning hole (111) and the upper cylinder positioning hole (121), and the upper positioning screw (21) is connected to the upper positioning thread to realize the positioning of the upper flange (11) and the upper cylinder (12); The lower flange (15) is formed with a lower flange positioning hole (151), and the lower cylinder (14) is formed with a lower cylinder positioning hole (141); one of the lower flange positioning hole (151) and the lower cylinder positioning hole (141) is formed with a lower positioning thread; the lower positioning screw (22) is inserted into the lower flange positioning hole (151) and the lower cylinder positioning hole (141), and the lower positioning screw (22) is connected to the lower positioning thread to achieve the positioning of the lower flange (15) and the lower cylinder (14).

3. The pump assembly according to claim 2, characterized in that: The upper flange (11) is also formed with an upper flange locking hole, the upper cylinder (12) is formed with an upper cylinder locking hole, the partition (13) is formed with a partition locking hole, the lower cylinder (14) is formed with a lower cylinder locking hole, the lower flange (15) is also formed with a lower flange locking hole, and one of the upper flange locking hole and the lower flange locking hole is formed with a locking thread; The locking screw comprises a first locking screw (31), wherein the first locking screw (31) is inserted into the upper flange locking hole, the upper cylinder locking hole, the partition locking hole, the lower cylinder locking hole and the lower flange locking hole, and the first locking screw (31) is connected to the locking thread to achieve overall locking of the upper flange (11), the upper cylinder (12), the partition (13), the lower cylinder (14) and the lower flange (15).

4. The pump assembly according to claim 3, characterized in that: When the upper positioning screw (21) is connected to the upper positioning thread, the maximum tightening force of the upper positioning screw (21) is F1, when the first locking screw (31) is connected to the locking thread, the maximum tightening force of the first locking screw (31) is F2, and when the lower positioning screw (22) is connected to the lower positioning thread, the maximum tightening force of the lower positioning screw (22) is F3; F1, F2 and F3 satisfy: F1 <F2,F3<F2。 5. The pump assembly according to claim 2, characterized in that: The upper flange (11) is also formed with an upper flange locking hole, and the upper cylinder (12) is formed with an upper cylinder locking hole; the partition (13) is formed with a partition locking hole, and the partition locking hole includes a partition upper locking hole and a partition lower locking hole which are arranged relatively up and down along the thickness direction of the partition (13), the partition locking hole is formed with an upper locking thread, and the partition lower locking hole is formed with a lower locking thread; the lower cylinder (14) is formed with a lower cylinder locking hole, and the lower flange (15) is also formed with a lower flange locking hole; The locking screw further comprises a second locking screw (32) and a third locking screw (33), wherein the second locking screw (32) is inserted into the locking hole of the upper flange, the locking hole of the upper cylinder and the locking hole of the partition, and the second locking screw (32) is connected to the upper locking thread to achieve locking of the upper flange (11), the upper cylinder (12) and the partition (13); The third locking screw (33) is inserted into the lower flange locking hole, the lower cylinder locking hole and the lower locking hole of the partition. The third locking screw (33) is connected to the lower locking thread to achieve locking of the lower flange (15), the lower cylinder (14) and the partition (13).

6. The pump assembly according to claim 5, characterized in that: When the upper positioning screw (21) is connected to the upper positioning thread, the maximum tightening force of the upper positioning screw (21) is F1', when the second locking screw (32) is connected to the upper locking thread, the maximum tightening force of the second locking screw (32) is F2', when the lower positioning screw (22) is connected to the lower positioning thread, the maximum tightening force of the lower positioning screw (22) is F3', when the third locking screw (33) is connected to the lower locking thread, the maximum tightening force of the third locking screw (33) is F4'; F1', F2', F3' and F4' satisfy: F1' <F2',F1'<F4',F3'<F2',F3'<F4'。 7. The pump assembly according to claim 5, characterized in that: The height of the partition (13) is H g The heights of the upper cylinder (12) and the lower cylinder (14) are both H q , the H g and H q satisfy: H g -H q ≥2mm,8mm≤H q ≤12mm。 8. The pump assembly according to any one of claims 3 and 5, characterized in that: Relative to the axis of the upper flange locking hole, the axis (111) of the upper flange positioning hole is closer to the axis of the upper flange (11); Relative to the axis of the lower flange locking hole, the axis (151) of the lower flange positioning hole is closer to the axis of the lower flange (15).

9. A rotary compressor, characterized in that: The rotary compressor comprises a casing and a pump body assembly according to any one of claims 1 to 8; the casing is formed with an installation cavity, and the pump body assembly is arranged in the installation cavity.

10. An air conditioner, characterized in that: The air conditioner includes the rotary compressor according to claim 9.

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