Totally enclosed balanced refrigerant pump

Abstract

The application discloses a totally-enclosed balanced refrigerant pump, which comprises a pump shell, a motor coil arranged in the pump shell, a reaction type rotor pair, an outer rotor and at least one inner rotor, the inner rotor being connected to the pump shell through a fixing frame, the outer rotor being connected to the fixing frame through a bearing, and the outer rotor being provided with a magnetic steel, wherein the motor coil drives the magnetic steel to rotate, the outer rotor drives the inner rotor to rotate, and the refrigerant is sucked and discharged through a high-pressure cavity formed between the inner rotor and the outer rotor. The outer rotor drives the inner rotor to rotate and is supported through the bearing, so that the outer rotor and the inner rotor are balanced in force, the reliability of left and right movement of the inner rotor and the outer rotor is greatly improved, the problem of wear of the outer wall of the outer rotor is solved, and the whole structure is more compact.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerant pump, in particular to a fully-closed balanced refrigerant pump. BACKGROUND

[0002] Refrigerant, also known as coolant, cryogen, snow, is a medium substance in various heat engines to complete energy conversion. These substances increase power through reversible phase change (such as gas-liquid phase change). For example, steam in steam engine, snow in refrigeration machine, etc.

[0003] In the field of refrigerant delivery, fluorine pump air conditioner is generally needed, and the existing fluorine pump air conditioner has the following shortcomings: 1. The fluorine pump air conditioner is easy to burn out the motor due to wear during operation; 2. The gas-liquid mixed delivery has high cavitation ability to the pump; 3. Higher requirements are put forward for wear. SUMMARY

[0004] The present application aims at the deficiencies of the prior art and provides a fully-closed balanced refrigerant pump, which can drive the inner rotor to rotate by the outer rotor and support by the bearing, balance the force of the outer rotor and the inner rotor, greatly improve the reliability of the left and right movement of the inner rotor and the outer rotor, solve the problem of wear of the outer wall of the outer rotor, and make the whole structure more compact.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme:

[0006] A fully-closed balanced refrigerant pump, comprising:

[0007] A pump shell, a motor coil is arranged in the pump shell;

[0008] Characterized in that:

[0009] Further comprising a reaction type rotor pair, the reaction type rotor pair comprises an outer rotor and at least one inner rotor, the inner rotor is connected to the pump shell through a fixing frame, the outer rotor is connected to the fixing frame through a bearing, the outer rotor is provided with a magnetic steel, the motor coil drives the magnetic steel to rotate, so that the outer rotor drives the inner rotor to rotate, and the refrigerant is sucked and discharged through the high-pressure cavity formed between the inner rotor and the outer rotor; through the design of the above structure, the inner rotor can be driven to rotate by the outer rotor, and the bearing is supported, so that the force of the outer rotor and the inner rotor is balanced, the reliability of the left and right movement of the inner rotor and the outer rotor is greatly improved, the problem of wear of the outer wall of the outer rotor is solved, and the whole structure is more compact.

[0010] Further, the inner rotor and the outer rotor eccentrically move, which is beneficial to form a high-pressure cavity during the rotation of the inner rotor and the outer rotor, so that the refrigerant enters the high-pressure cavity and is discharged after rotation.

[0011] Further, the inner rotor is provided with an outer gear ring, the outer rotor is provided with an inner gear ring, the inner gear ring and the outer gear ring are meshed with each other, and the design of the inner gear ring and the outer gear ring can improve the stability and reliability of the rotation of the outer rotor driving the inner rotor and reduce wear.

[0012] Further, the outer gear ring is provided with a first wear-resistant layer, the inner gear ring is provided with a second wear-resistant layer, the first wear-resistant layer and the second wear-resistant layer are both made of elastic material, can play a role in protecting the outer gear ring and the inner gear ring, reducing wear, prolonging the service life of the inner rotor and the outer rotor, and the wear material is non-metal, so the motor will not burn out.

[0013] Further, the fixed frame is provided with a liquid inlet cavity and a liquid outlet cavity, the liquid inlet cavity is communicated with a liquid inlet pipe arranged on the pump shell, a flow guide cavity and a converging cavity are formed between the fixed frame and the pump shell, the pump shell is provided with a liquid outlet pipe communicated with the converging cavity, the refrigerant enters the liquid inlet cavity through the liquid inlet pipe, is continuously sucked and discharged through the high-pressure cavity formed by the meshing of the inner rotor and the outer rotor, and then enters the flow guide cavity through the liquid outlet cavity and is output through the liquid outlet pipe.

[0014] Further, the inner rotor is abutted against the outer rotor and the fixed frame through the baffle, the baffle is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the high-pressure cavity, and the design of the baffle is not only beneficial to reducing the wear of the inner rotor and the outer rotor during rotation, but also can play a positioning role.

[0015] Further, the side of the outer rotor close to the baffle is provided with a balance cavity, the balance cavity is communicated with the converging cavity through a compensation channel, the compensation channel is arranged in the outer rotor, the refrigerant in the converging cavity enters the balance cavity through the compensation channel through the bearing, and the axial balance of the inner rotor and the outer rotor during rotation is realized.

[0016] Further, the baffle is provided with a flow guide hole, the balance cavity is communicated with the high-pressure cavity through the flow guide hole, the refrigerant in the balance cavity is conveniently discharged through the high-pressure cavity, and the entire reaction type rotor pair is in dynamic balance.

[0017] Further, the inner rotor is connected to the fixed frame through the rotating shaft, and the inner rotor is conveniently supported.

[0018] Further, the pump shell is a fully closed structure.

[0019] The application has the following beneficial effects due to the adoption of the above technical scheme:

[0020] 1. The outer rotor can drive the inner rotor to rotate, and the outer rotor and the inner rotor are supported by the bearing, so that the force balance of the outer rotor and the inner rotor is realized, the reliability of the left-right movement of the inner rotor and the outer rotor is greatly improved, the problem of wear of the outer wall of the outer rotor is solved, and the entire structure can be more compact.

[0021] 2. The inner rotor and the outer rotor are eccentrically moved, which is beneficial to forming a high-pressure cavity during the rotation of the inner rotor and the outer rotor, so that the refrigerant enters the high-pressure cavity and is discharged after rotation.

[0022] 3. The outer gear ring has a first wear-resistant layer, and the inner gear ring has a second wear-resistant layer. Both the first and second wear-resistant layers are made of elastic materials, which can protect the outer and inner gear rings, reduce wear, and extend the service life of the inner and outer rotors. The wear material is non-metallic, so the motor will not burn out.

[0023] 4. The refrigerant in the collecting cavity is fed into the balance cavity through the bearing via the compensation channel, so as to maintain axial balance when the inner rotor and the outer rotor rotate. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of a fully enclosed balanced refrigerant pump according to the present invention;

[0026] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0028] Figure 4 This is a schematic diagram of the structure when the inner rotor and outer rotor mesh in this invention.

[0029] In the diagram: 1-Pump casing; 2-Fixed frame; 3-Outer rotor; 4-Inner rotor; 5-Motor coil; 6-Outlet chamber; 7-Inlet pipe; 8-Outlet pipe; 9-Guide chamber; 10-Gathering chamber; 11-Magnet; 12-Inlet chamber; 13-Compensation channel; 14-Steel retainer; 15-High pressure chamber; 16-First wear-resistant layer; 17-Second wear-resistant layer; 18-Bearing; 19-Inlet; 20-Outlet; 21-Balance chamber; 22-Guide hole; 23-Shaft. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] like Figures 1 to 4 As shown, this invention discloses a fully enclosed balanced refrigerant pump, comprising: a pump housing 1, which is a fully enclosed structure. A motor coil 5 is disposed inside the pump housing 1, dividing the interior of the pump housing 1 into left and right sections.

[0034] The pump casing 1 also includes a reaction rotor pair, comprising an outer rotor 3 and at least one inner rotor 4. This application preferably uses one outer rotor 3 and two inner rotors 4, symmetrically positioned inside the outer rotor 3. The eccentric movement of the inner rotor 4 and outer rotor 3 facilitates the formation of a high-pressure chamber 15 during rotation, allowing the refrigerant to enter the high-pressure chamber 15, rotate, and then be discharged. The inner rotor 4 is equipped with an outer gear ring, and the outer rotor 3 is equipped with an inner gear ring. The inner and outer gear rings mesh with each other. The design of the inner and outer gear rings improves the stability and reliability of the rotation of the inner rotor 4 driven by the outer rotor 3, reducing wear. This application uses an example with 7 inner gear rings and 6 outer gear rings to illustrate the structure of the reaction rotor pair, but the number of teeth is not limited to these values ​​and can be adjusted according to actual needs.

[0035] The outer gear ring is provided with a first wear-resistant layer 16, and the inner gear ring is provided with a second wear-resistant layer 17. Both the first wear-resistant layer 16 and the second wear-resistant layer 17 are made of elastic material, which can protect the outer gear ring and the inner gear ring, reduce wear, and extend the service life of the inner rotor 4 and the outer rotor 3. The wear material is non-metallic, so the motor will not burn out.

[0036] The inner rotor 4 is connected to the pump casing 1 via a fixed frame 2, and is also connected to the fixed frame 2 via a rotating shaft 23 for easy support. The outer rotor 3 is connected to the fixed frame 2 via a bearing 18. The outer rotor 3 is equipped with a magnet 11, which is driven to rotate by a motor coil 5, causing the outer rotor 3 to drive the inner rotor 4 to rotate. This allows the refrigerant to be drawn in and discharged through the high-pressure chamber 15 formed between the inner rotor 4 and the outer rotor 3. Through the design of the above structure, the outer rotor 3 can drive the inner rotor 4 to rotate, and the bearing 18 provides support, balancing the forces on the outer rotor 3 and the inner rotor 4. This greatly improves the reliability of the lateral movement of the inner rotor 4 and the outer rotor 3, while also solving the problem of wear on the outer wall of the outer rotor 3, making the entire structure more compact.

[0037] The fixed frame 2 is provided with a liquid inlet cavity 12 and a liquid outlet cavity 6, the liquid inlet cavity 12 is communicated with a liquid inlet pipe 7 arranged on the pump shell 1, the fixed frame 2 and the pump shell 1 form a flow guide cavity 9 and a converging cavity 10, the fixed frame 2 is provided with a channel, the flow guide cavity 9 is communicated with the converging cavity 10 through the channel, the pump shell 1 is provided with a liquid outlet pipe 8 communicated with the converging cavity 10, the refrigerant enters the liquid inlet cavity 12 through the liquid inlet pipe 7, is continuously sucked and discharged through the high pressure cavity 15 formed by the meshing of the inner rotor 4 and the outer rotor 3, and then enters the flow guide cavity 9 from the liquid outlet cavity 6, and is output from the liquid outlet pipe 8 through the converging cavity 10.

[0038] The inner rotor 4 is abutted against the outer rotor 3 and the fixed frame 2 through the blocking ring 14, the blocking ring 14 is provided with a liquid inlet 19 and a liquid outlet 20, the liquid inlet 19 and the liquid outlet 20 are both communicated with the high pressure cavity 15, the liquid inlet 19 is communicated with the liquid inlet cavity 12, the liquid outlet 20 is communicated with the liquid outlet cavity 6, through the design of the blocking ring 14, not only the abrasion of the inner rotor 4 and the outer rotor 3 during rotation is reduced, but also the positioning effect is achieved.

[0039] The side of the outer rotor 3 close to the blocking ring 14 is provided with a balance cavity 21, the balance cavity 21 is communicated with the converging cavity 10 through a compensation channel 13, the compensation channel 13 is arranged in the outer rotor 3, the refrigerant in the converging cavity 10 enters the balance cavity 21 through the compensation channel 13 from the bearing 18, so that the axial balance of the inner rotor 4 and the outer rotor 3 during rotation is maintained. The blocking ring 14 is provided with a flow guide hole 22, the balance cavity 21 is communicated with the high pressure cavity 15 on the other side through the flow guide hole 22, so that the refrigerant in the balance cavity 21 is discharged through the high pressure cavity 15, and the whole reaction type rotor pair is in dynamic balance.

[0040] In actual use, first, the refrigerant is input through the liquid inlet pipe 7 on both sides of the pump shell 1, the motor coil 5 is started to drive the magnetic steel 11 to rotate, so that the outer rotor 3 drives the two inner rotors 4 to rotate synchronously, the inner rotor 4 and the outer rotor 3 form a continuous high pressure cavity 15, the refrigerant is sucked into the liquid inlet cavity 12, and then is discharged to the flow guide cavity 9 from the liquid outlet cavity 6 after rotation, the refrigerant in the flow guide cavity 9 is output from the liquid outlet pipe 8 through the converging cavity 10; since the converging cavity 10 is high pressure, the refrigerant inside enters the balance cavity 21 through the compensation channel 13 in the outer rotor 3 from the bearing 18, the blocking ring 14 is positioned through the balance cavity 21, so that the stability and reliability of the inner rotor 4 and the outer rotor 3 during rotation are improved, the refrigerant in the balance cavity 21 on the right side enters the high pressure cavity 15 on the right side through the flow guide hole 22 to be output, so that the whole refrigerant pump reaches dynamic balance.

[0041] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification for realizing basically the same technical effect based on the present application is covered in the protection scope of the present application.

Claims

1. A fully enclosed balanced refrigerant pump, comprising: Pump casing, wherein a motor coil is provided inside the pump casing; Its features are: It also includes a reaction rotor pair, which comprises an outer rotor and at least one inner rotor. The inner rotor is connected to the pump housing via a fixed frame, and the outer rotor is connected to the fixed frame via a bearing. The outer rotor is equipped with a magnet, and the motor coil drives the magnet to rotate, causing the outer rotor to drive the inner rotor to rotate, thereby realizing the intake and discharge of refrigerant through the high-pressure chamber formed between the inner and outer rotors. The inner rotor abuts against the outer rotor and the fixed frame via a retaining ring, which has an inlet and an outlet, both of which are connected to the high-pressure chamber. The fixed frame has an inlet chamber and an outlet chamber, with the inlet chamber connected to an inlet pipe provided on the pump housing. The fixed frame and the pump housing are... The pump housing forms a guide cavity and a converging cavity. An outlet pipe connects to the converging cavity. Refrigerant enters the inlet cavity through the inlet pipe, is continuously drawn in and discharged through the high-pressure cavity formed by the meshing of the inner and outer rotors, and then enters the guide cavity from the outlet cavity, before being output from the converging cavity through the outlet pipe. A balance cavity is located on the side of the outer rotor near the retaining ring. The balance cavity is connected to the converging cavity via a compensation channel located inside the outer rotor. Refrigerant in the converging cavity enters the balance cavity through the bearing via the compensation channel, achieving axial balance between the inner and outer rotors during rotation. The retaining ring has a guide hole, through which the balance cavity connects to the high-pressure cavity.

2. A totally-enclosed, balanced-refrigerant pump as recited in claim 1, characterized by: The inner rotor and the outer rotor move eccentrically.

3. A totally-enclosed, balanced-refrigerant pump as recited in claim 2, characterized by: The inner rotor is provided with an outer gear ring, and the outer rotor is provided with an inner gear ring, the inner gear ring and the outer gear ring mesh with each other.

4. A totally-enclosed, balanced-refrigerant pump as recited in claim 3, characterized by: The outer gear ring is provided with a first wear-resistant layer, and the inner gear ring is provided with a second wear-resistant layer. Both the first wear-resistant layer and the second wear-resistant layer are made of elastic material.

5. A fully enclosed balanced refrigerant pump according to claim 1, characterized in that: The inner rotor is connected to the fixed frame via a rotating shaft.

6. A fully enclosed balanced refrigerant pump according to claim 1, characterized in that: The pump casing is a fully enclosed structure.

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