阅读说明：本技术 一种压缩机及压缩机组件装配方法、冰箱 (Compressor, assembly method of compressor assembly and refrigerator ) 是由 李秀军 侯同尧 赵强 张善房 彭汉光 于 2019-11-26 设计创作，主要内容包括：本发明公开了一种压缩机及压缩机组件装配方法、冰箱,该压缩机包括定子、转子、连杆、活塞和定位控制器,定子用于产生交变磁场,转子与连杆连接,连杆与活塞连接,转子用于在交变磁场的拖动下,通过连杆带动活塞进行往复运动,定位控制器用于在安装连杆的过程中固定转子的初始位置。通过定位控制器在安装连杆的过程中固定转子的初始位置,可以使得转子的初始位置固定,在启动过程中,可以快速估算实际位置,提高压缩机启动成功率,降低噪音。(The invention discloses a compressor, an assembly method of a compressor assembly and a refrigerator. The initial position of the rotor is fixed by the positioning controller in the process of installing the connecting rod, so that the initial position of the rotor can be fixed, the actual position can be quickly estimated in the starting process, the starting success rate of the compressor is improved, and the noise is reduced.)

1. A compressor, comprising: the device comprises a stator, a rotor, a connecting rod, a piston and a positioning controller;

the stator is used for generating an alternating magnetic field;

the rotor is connected with the connecting rod; the connecting rod is connected with the piston; the rotor is used for driving the piston to reciprocate through the connecting rod under the dragging of the alternating magnetic field;

the positioning controller is used for fixing the initial position of the rotor in the process of installing the connecting rod.

2. The compressor of claim 1, wherein the positioning controller magnetically fixes an initial position of the rotor during installation of the connecting rod.

3. The compressor of claim 1, wherein the positioning control is an electromagnet.

4. A compressor according to any one of claims 1 to 3, further comprising a housing;

the positioning controller is fixed at a preset position of the shell by taking the rotor as a center.

5. A compressor assembly assembling method based on the compressor of any one of claims 1 to 4, comprising:

mounting a stator and a rotor of the compressor;

and controlling the rotor to be positioned at an initial position by a positioning controller, and installing a connecting rod of the compressor.

6. The method as claimed in claim 5, wherein said controlling the rotor to be located at an initial position by the positioning controller, installing a connecting rod of the compressor comprises:

starting a positioning controller, fixing the initial position of the rotor, and installing a connecting rod of the compressor;

and closing the positioning controller.

7. The method of claim 5, wherein the positioning controller is an electromagnet.

8. The method as claimed in any one of claims 5 to 7, wherein the positioning controller is fixed to a predetermined position of a casing of the compressor centering on the rotor.

9. A refrigerator characterized by comprising the compressor of any one of claims 1 to 4.

Technical Field

The embodiment of the invention relates to the technical field of refrigerators, in particular to a compressor, a compressor assembly assembling method and a refrigerator.

Background

The working principle of the existing reciprocating compressor is that an alternating magnetic field is generated by a three-phase stator coil, a permanent magnet rotor is dragged by the magnetic field to drive a connecting rod to reciprocate, a piston connected with the connecting rod reciprocates to compress gas in a cylinder to generate high-pressure gas, and the system circulates.

The starting process of the existing variable frequency controller mainly comprises magnetic field positioning, forced dragging, actual position estimation, and switching to double closed-loop operation after the target rotating speed or positioning angle is reached.

Because the production consistency of the rotor, the stator and the connecting rod is not uniform, the initial position of the rotor is not fixed in the starting and positioning process, so that the starting success rate is low and the noise is high.

Disclosure of Invention

The embodiment of the invention provides a compressor, a compressor assembly assembling method and a refrigerator, which are used for improving the starting success rate of the compressor and reducing the starting noise.

In a first aspect, an embodiment of the present invention provides a compressor, including: the device comprises a stator, a rotor, a connecting rod, a piston and a positioning controller;

the stator is used for generating an alternating magnetic field;

the rotor is connected with the connecting rod; the connecting rod is connected with the piston; the rotor is used for driving the piston to reciprocate through the connecting rod under the dragging of the alternating magnetic field;

the positioning controller is used for fixing the initial position of the rotor in the process of installing the connecting rod.

Optionally, the positioning controller fixes the initial position of the rotor in a magnetic attraction manner in the process of installing the connecting rod.

Optionally, the positioning controller is an electromagnet.

Optionally, the compressor further comprises a housing;

the positioning controller is fixed at a preset position of the shell by taking the rotor as a center.

In a second aspect, an embodiment of the present invention provides a method for installing a compressor assembly of a compressor based on the first aspect, including:

mounting a stator and a rotor of the compressor;

and controlling the rotor to be positioned at an initial position by a positioning controller, and installing a connecting rod of the compressor.

Optionally, the controlling the rotor to be located at the initial position by the positioning controller, and the connecting rod for installing the compressor includes:

starting a positioning controller, fixing the initial position of the rotor, and installing a connecting rod of the compressor;

and closing the positioning controller.

Optionally, the positioning controller is an electromagnet.

Optionally, the positioning controller is fixed to a preset position of the casing of the compressor, with the rotor as a center.

In a third aspect, an embodiment of the present invention provides a refrigerator, including the compressor of the first aspect.

The compressor provided by the embodiment of the invention comprises a stator, a rotor, a connecting rod, a piston and a positioning controller, wherein the stator is used for generating an alternating magnetic field, the rotor is connected with the connecting rod, the connecting rod is connected with the piston, the rotor is used for driving the piston to reciprocate through the connecting rod under the dragging of the alternating magnetic field, and the positioning controller is used for fixing the initial position of the rotor in the process of installing the connecting rod. The initial position of the rotor is fixed by the positioning controller in the process of installing the connecting rod, so that the initial position of the rotor can be fixed, the actual position can be quickly estimated in the starting process, the starting success rate of the compressor is improved, and the noise is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a framework structure of an FOC algorithm provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a compressor according to an embodiment of the present invention;

fig. 3 is a schematic flow chart illustrating an assembling method of a compressor assembly according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to the embodiment of the invention, when a compressor is started, a variable frequency controller drives the compressor to start through an FOC algorithm, and fig. 1 exemplarily shows a frame structure of the FOC algorithm applied to the embodiment of the invention, based on the frame structure, the refrigerator variable frequency controller can obtain three-phase currents Ia, Ib and Ic flowing through a PMSM motor through a sampling resistor R, obtain I alpha and I beta after Clarke conversion, and convert the three-phase currents Ia, Ib and Ic into Iq and Id through Park conversion; and on the other hand, according to the I alpha and the I beta, estimating the actual rotating speed omega through an estimator, comparing the actual rotating speed omega with the set rotating speed, outputting reference Iq and Id currents through PI regulation, outputting actual Vq and Vd through current loop PI regulation, finally obtaining three-phase power through anti-Clarke and anti-Park conversion and SVM modulation, and driving the motor through a three-phase bridge.

Based on the above description, fig. 2 shows the structure of a compressor according to an embodiment of the present invention in detail.

As shown in fig. 2, the compressor specifically includes: stator 201, stator 202, connecting rod 203, piston 204 and positioning controller 205.

The stator 201 is used for generating an alternating magnetic field, the stator 202 is connected with a connecting rod 203, the connecting rod 203 is connected with a piston 204, the stator 202 is used for driving the piston 204 to reciprocate through the connecting rod 203 under the dragging of the alternating magnetic field, and the positioning controller 205 is used for fixing the initial position of the stator 202 in the process of installing the connecting rod 203.

Specifically, the positioning controller 205 fixes the initial position of the stator 202 by magnetic attraction during the process of installing the connecting rod 203. Thus, the positioning controller 205 may be an electromagnet or other controller with magnetic attraction function.

The positioning controller 205 can be fixed to a preset position of the housing 206 with the stator 202 as a center, and the preset position can be set empirically and arbitrarily (0-360 degrees) as required.

Before the connecting rod 203 is installed on the compressor component, the positioning controller 205 is started, and after the connecting rod 203 is installed, the positioning controller 205 is closed, so that the original automatic installation mode of the connecting rod 203 is not influenced.

Based on the same technical concept, the positioning controller 205 can also detect the position of the connecting rod 203 for maintenance and development of variable frequency control.

Based on the structure of the compressor shown in fig. 2, a flow of a compressor assembly assembling method is exemplarily shown in fig. 3.

As shown in fig. 3, the process specifically includes:

step 301, mounting a stator and a rotor of the compressor.

And step 302, controlling the rotor to be located at an initial position through a positioning controller, and installing a connecting rod of the compressor.

When the connecting rod of the compressor is installed, the positioning controller is started first, the initial position of the rotor is fixed, and the connecting rod of the compressor is installed. The positioning controller is closed after the connecting rod is installed.

It should be noted that the embodiment of the present invention further provides a refrigerator, which includes the above compressor.

The above embodiment shows that the compressor includes a stator, a rotor, a connecting rod, a piston, and a positioning controller, the stator is used for generating an alternating magnetic field, the rotor is connected with the connecting rod, the connecting rod is connected with the piston, the rotor is used for driving the piston to reciprocate through the connecting rod under the dragging of the alternating magnetic field, and the positioning controller is used for fixing the initial position of the rotor in the process of installing the connecting rod. The initial position of the rotor is fixed by the positioning controller in the process of installing the connecting rod, so that the initial position of the rotor is fixed, and the consistency of the stator, the rotor and the connecting rod is maintained. In the starting process, the actual position can be quickly estimated, the starting success rate of the compressor is improved, and the noise is reduced.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.