Double-cylinder swing type electronic compressor

Abstract

The invention provides a double-cylinder swing type compressor which is more subdivided into a stator type rotor compressor, and belongs to the field of refrigeration equipment. An inner air cylinder (71) and an outer air cylinder (72) are separated in an annular cavity (14) through a circular ring structure (23), and rotating motion of a driving motor passes through an eccentric shaft and a bearing and then is converted into swinging motion of the circular ring structure (23) in the annular cavity (14) to generate volume change of the air cylinders. The invention has the beneficial effects of low abrasion, high efficiency and low cost.

Description

Technical Field

[0001] The present application relates to the field of refrigeration equipment, in particular to the field of compressors of refrigeration equipment. Background Art

[0002] At present, there is a trend that scroll and rotary compressors are gradually replacing piston compressors in compressors for small and medium-sized air conditioners, refrigerators and other refrigeration equipment. However, scroll compressors have complex structures, high processing costs, and low efficiency at low speeds. Rotary compressors have problems such as large wear on the stator and rotor and low efficiency. Daikin's swing compressor has been more successful in solving the above problems, but it also has problems such as low volume ratio and high requirements for lubricating oil. Summary of the invention

[0003] In view of the above problems, the purpose of this application is to provide a compressor that has the advantages of low wear and high efficiency of a scroll compressor and a swing compressor, and also has the advantages of a simple structure, small size and low cost of a rotor compressor.

[0004] The present application adopts the following technical scheme: it mainly includes a driving motor, an eccentric shaft, a bearing, a swinging plate and a stator. The driving motor is connected to the eccentric shaft. The output shaft of the eccentric shaft is installed on the inner ring of the bearing, and the transmission shaft of the swinging plate is installed on the outer ring of the bearing. The swinging plate includes a circular ring structure, a disk surface and a transmission shaft. There is an annular chamber in the stator, and the circular ring structure of the swinging plate is installed in the annular chamber of the stator, and the annular chamber is divided into an inner cylinder and an outer cylinder by the circular ring structure of the swinging plate. The inner and outer cavity walls of the stator are respectively provided with guide grooves, and stator devices are respectively provided in the guide grooves. The function of the stator device is to separate the cylinders and produce volume changes. An air inlet and an exhaust port are respectively provided on both sides of the guide groove.

[0005] Preferred as Figure 3 Another installation method of the eccentric shaft, the bearing and the swing plate is that the output shaft of the eccentric shaft is installed on the outer ring of the bearing, and the transmission shaft of the swing plate is installed on the inner ring of the bearing.

[0006] Preferably, the inner stator and the outer stator of the double-cylinder swing rotor compressor can be separated and provided with springs respectively.

[0007] Preferred as Figure 4 The inner stator and the outer stator of the double-cylinder swing rotor compressor shown in the figure can be connected, and a rotating shaft is provided at the circular ring structure of the swing plate.

[0008] Preferably, the outer ring of the eccentric shaft is provided with a balancing block.

[0009] The dual cylinders described in the preferred dual-cylinder swing compressor can be switched to a parallel state or a series state as well as a single-cylinder operation state. When the dual cylinders are in a series state, the outer cylinder is preferably a low-pressure cylinder and the inner cylinder is a high-pressure cylinder. The state is controlled by a solenoid valve under specific working conditions. For example, the outdoor temperature is low in winter, and the temperature difference of the refrigerant needs to be increased during heating, so the internal and external compressors are suitable for a series state. In summer, normal working conditions are suitable for a parallel state. When the indoor temperature reaches or approaches the set temperature, the speed of the drive motor can be reduced and the compressor is switched to a series state. When there is only a fixed-frequency power supply, single-cylinder operation is required to realize the variable capacity of the compressor. Since the dual-cylinder volumes of this application are different, three-stage variable capacity can be performed.

[0010] The present application has the following beneficial effects: due to the adoption of a swing type and a double cylinder and a curved surface structure without a scroll compressor, it has the advantages of low wear, high efficiency, low cost, high volume ratio, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the expansion of a twin-cylinder swing rotor compressor according to Example 1.

[0012] Figure 2 This is a schematic diagram of the expansion of a twin-cylinder swing rotor compressor according to Example 2.

[0013] Figure 3 This is a schematic diagram of another installation method for the eccentric shaft, bearing, and swing plate.

[0014] Figure 4 A schematic diagram of a stator structure.

[0015] Figure 5 It is a top view of the circular ring structure of the swing plate in the annular chamber of the stationary plate.

[0016] In the figure: (1) stator, (2) swing plate, (2A) the reverse side of swing plate (2), (3) stator end cover, (4) bearing, (5) eccentric shaft, (6) stator device, (11) guide groove, (12) exhaust port, (13) air inlet, (14) annular chamber, (15) whole machine mounting hole, (21) drive shaft of swing plate, (22) plate surface, (23) annular structure, (31) bolt, (51) balance block, (61) rotating shaft, (63) spring, (71) inner cylinder, (72) outer cylinder. Specific implementation methods

[0017] Example 1: Figure 1The diagram shows an expanded schematic diagram of a twin-cylinder swing rotor compressor. It mainly includes an eccentric shaft (5), a bearing (4), a swing plate (2) and a stator plate (1). The eccentric shaft (5) is provided with a balancing block (51). The swing plate (2) includes a circular ring structure (23), a plate surface (22) and a transmission shaft (21). The stator plate (1) includes an annular chamber (14), a guide groove (11), an air inlet (13), an air outlet (12) and a bolt hole (15) for mounting the whole machine. In order to more clearly express the structure of the swing plate (2), a schematic diagram (2A) of the reverse structure of the swing plate (2) is provided. Figure 1 The output shaft of the central eccentric shaft (5) is mounted on the inner ring of the bearing (4), and the transmission shaft of the swing plate (2) is mounted on the outer ring of the bearing (4). The annular structure (23) of the swing plate is mounted in the annular chamber (14) of the stationary plate, such as Figure 5 The annular chamber (14) of the stationary disk is divided into an inner cylinder (71) and an outer cylinder (72) by the circular ring structure (23) of the swing disk. The inner and outer cavity walls of the stationary disk (1) are respectively provided with guide grooves (11), and stator devices (6) are respectively installed in the guide grooves. An air inlet (13) and an air outlet (12) are respectively provided on both sides of the guide groove. The diameter of the disk surface (22) of the swing disk (2) in Example 1 is larger than that in Example 2, and its function is to seal the end surface of the stationary disk (1) to form a sealed cylinder. The beneficial effect is that the structure is small and the cost is low.

[0018] Example 2: Figure 2 The diagram shows an expanded schematic diagram of a twin-cylinder swing rotor compressor. It mainly includes an eccentric shaft (5), a bearing (4), a stator end cover (3), a swing plate (2) and a stator (1). The eccentric shaft (5) is provided with a balancing block (51). The stator end cover (3) includes an end cover and a bolt (31). The swing plate (2) includes a circular ring structure (23), a plate surface (22) and a transmission shaft (21). The stator (1) includes an annular chamber (14), a guide groove (11), an air inlet (13), an exhaust port (12) and a bolt hole (15) for mounting the whole machine. In order to more clearly express the structure of the swing plate (2), a schematic diagram of the reverse structure of the swing plate (2) (2A) is provided. In Figure 2 The output shaft of the central eccentric shaft (5) is mounted on the inner ring of the bearing (4), and the drive shaft (21) of the swing plate is mounted on the outer ring of the bearing (4). The annular structure (23) of the swing plate is mounted in the annular chamber (14) of the static plate. The static plate end cover (3) is mounted on the end face of the static plate (1) by bolts (31). Figure 5The annular chamber (14) of the stator plate is divided into an inner cylinder (71) and an outer cylinder (72) by the circular ring structure (23) of the swing plate. The inner and outer cavity walls of the stator plate (1) are respectively provided with guide grooves (11), and stator devices (6) are respectively installed in the inner and outer guide grooves (11). An air inlet (13) and an exhaust port (12) are respectively provided on both sides of the guide groove. The beneficial effect is that the stator plate end cover (3) not only forms a sealed cylinder but also limits the swing plate (2) to move in a limited space, thereby reducing the unbalanced movement of the swing plate (2), so the displacement can be relatively larger and the stability is better.

Claims

1. A twin-cylinder swing compressor, characterized in that It mainly includes a driving motor, an eccentric shaft, a bearing, a swinging plate and a stator. The driving motor is connected to the eccentric shaft. The output shaft of the eccentric shaft is installed on the inner ring of the bearing, and the transmission shaft of the swinging plate is installed on the outer ring of the bearing. The swinging plate includes a circular ring structure, a plate surface and a transmission shaft. There is an annular chamber in the stator, and the circular ring structure of the swinging plate is installed in the annular chamber of the stator, and the annular chamber is divided into an inner cylinder and an outer cylinder by the circular ring structure. The inner and outer cavity walls of the stator are respectively provided with guide grooves, and stator devices are respectively installed in the guide grooves. The function of the stator device is to separate the cylinders and produce volume changes. An air inlet and an exhaust port are respectively provided on both sides of the guide groove.

2. The twin-cylinder swing compressor according to claim 1, characterized in that Another installation method of the eccentric shaft, the bearing and the swing plate is that the output shaft of the eccentric shaft is installed on the outer ring of the bearing, and the transmission shaft of the swing plate is installed on the inner ring of the bearing.

3. The twin-cylinder swing compressor according to claim 1, characterized in that The outer ring of the eccentric wheel is provided with a balancing block.

4. The twin-cylinder swing compressor according to claim 1, characterized in that The inner stator and the outer stator are separated and are respectively provided with springs.

5. The twin-cylinder swing compressor according to claim 1 is characterized in that The fixed plate is connected to the outer fixed plate, and a rotating shaft is arranged at the circular ring structure of the swing plate.

6. The twin-cylinder swing compressor according to claim 1, characterized in that The dual cylinders can be switched to a parallel state or a series state as well as a single cylinder operation state.

7. The twin-cylinder swing compressor according to claim 1, characterized in that A stator end cover is provided on the end surface of the stator.

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