Pump body assembly, rolling piston compressor, air conditioner

Abstract

The application provides a pump body assembly, a rolling rotor compressor and an air conditioner, wherein the pump body assembly comprises a first exhaust silencing cavity, a second exhaust silencing cavity and a pump body exhaust port, the first exhaust silencing cavity and the second exhaust silencing cavity are communicated through a flow passage, the pump body exhaust port is arranged correspondingly to the first exhaust silencing cavity, a Tesla valve pipe is arranged in the flow passage, a forward inlet of the Tesla valve pipe is arranged correspondingly to the second exhaust silencing cavity, and a forward outlet of the Tesla valve pipe is arranged correspondingly to the first exhaust silencing cavity. The application minimizes the pressure difference of the airflow in the two exhaust silencing cavities, that is, the back pressure difference of the two exhaust valve assemblies, so that the opening time of the exhaust valve pieces in the two exhaust valve assemblies is as consistent as possible, thereby reducing the pressure loss and vibration intensification phenomenon caused by the exhaust pulsation.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a pump assembly, a rolling rotor compressor, and an air conditioner. Background Technology

[0002] Scroll compressors are increasingly used in air conditioning, heat pump water heaters, refrigeration equipment, and vehicle refrigeration systems due to their simple structure, low cost, and high reliability. In recent years, to further improve the energy efficiency of scroll compressors, single-cylinder double-row scroll compressors have been increasingly adopted. However, this has also brought about some other problems.

[0003] The primary function of a compressor in a refrigeration system is to periodically compress the refrigerant, transforming it from a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure refrigerant, thus circulating it within the system. In a single-cylinder, double-row, rolling rotor compressor, during the periodic compression and discharge process, valves located in the upper and lower flange valve seats continuously open and close the discharge ports to achieve the discharge function. Due to the dual-exhaust pump body structure, the lower exhaust gas must flow through the lower silencer chamber and the pump body flow hole to reach the upper silencer chamber, resulting in a significant pressure drop. Because of this pressure drop, the back pressure experienced by the upper and lower exhaust valves will differ during compressor operation. Analysis shows that the exhaust valve opening condition is P. 缸内 ≥P 背压 +P 预作用力 When the upper and lower exhaust valve plates have the same stiffness (i.e. the same pre-action force of the exhaust valve plates), due to the different back pressures and the constant pressure inside the cylinder, the opening times of the two exhaust valve plates will be inconsistent, causing the upper valve plate to open first and the lower valve plate to open later, which in turn leads to adverse conditions such as large exhaust pulsation, exhaust pressure loss and increased vibration. Summary of the Invention

[0004] Therefore, the present invention provides a pump body assembly, a rolling rotor compressor, and an air conditioner, which can solve the technical problems in the prior art where the large opening time difference between the upper and lower exhaust valves leads to large exhaust pulsation, exhaust pressure loss, and increased vibration in the pump body assembly.

[0005] To address the aforementioned problems, the present invention provides a pump body assembly, including a first exhaust silencing chamber and a corresponding first exhaust valve assembly, a second exhaust silencing chamber and a corresponding second exhaust valve assembly, and a pump body exhaust port. The first exhaust silencing chamber and the second exhaust silencing chamber are connected by a flow channel. The pump body exhaust port is correspondingly disposed to the first exhaust silencing chamber. A Tesla valve tube is disposed within the flow channel, and the forward inlet of the Tesla valve tube is correspondingly disposed to the second exhaust silencing chamber, and the forward outlet of the Tesla valve tube is correspondingly disposed to the first exhaust silencing chamber.

[0006] In some embodiments, the Tesla valve tube has N circulation sections, where N ≥ 4.

[0007] In some embodiments, the Tesla valve tube has a channel angle of α in its main flow channel, where 0° < α ≤ 25°.

[0008] In some embodiments, the flow cross-section of the main flow channel is rectangular, and the width of the rectangle is d, 0.5mm≤d≤2.0mm.

[0009] In some embodiments, when the pump body assembly is a single-cylinder double-row pump body, N = 6, α = 12.5°, and d = 2mm; or, when the pump body assembly is a double-cylinder single-stage pump body, N = 8, α = 10°, and d = 2mm.

[0010] In some embodiments, the flow passage has at least two, and each flow passage is provided with the Tesla valve tube.

[0011] In some embodiments, the pump body assembly is a single-cylinder double-row pump body.

[0012] In some embodiments, the pump assembly is a dual-cylinder single-stage pump.

[0013] The present invention also provides a compressor including the pump body assembly described above.

[0014] The present invention also provides an air conditioner, including the compressor described above.

[0015] This invention provides a pump assembly, a rolling rotor compressor, and an air conditioner. A Tesla valve tube is installed in the flow channel, which fully utilizes the forward acceleration and reverse obstruction characteristics of the Tesla valve tube. This significantly reduces the pressure drop of the exhaust gas flow from the second exhaust valve assembly in the second exhaust silencer chamber before it flows into the first exhaust silencer chamber and mixes with the exhaust gas flow from the first exhaust valve assembly. This minimizes the pressure difference between the airflow in the two exhaust silencers chambers, i.e., the back pressure difference between the two exhaust valve assemblies. This ensures that the opening time of the exhaust valve plates in the two exhaust valve assemblies is as consistent as possible, thereby reducing pressure loss and increased vibration caused by exhaust pulsation. Furthermore, the reverse obstruction of the Tesla valve tube prevents backflow, thus eliminating the adverse effects of increased power consumption caused by backflow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the pump body assembly according to an embodiment of the present invention (a single-cylinder double-row pump body assembly);

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the Tesla valve tube in the diagram;

[0018] Figure 3 for Figure 2 The right-side view;

[0019] Figure 4 This is a schematic diagram of the internal structure of the pump body assembly according to an embodiment of the present invention (a dual-cylinder single-stage pump body assembly);

[0020] Figure 5 This is a schematic diagram showing the relationship between the channel angle α of the main flow channel of the Tesla valve tube in the single-cylinder double-row pump body assembly of the present invention and the corresponding compressor energy efficiency (taking a pump body height of 36mm as an example).

[0021] Figure 6 This is a schematic diagram showing the relationship between the width d of the main flow channel of the Tesla valve tube in the single-cylinder double-row pump body assembly of this invention and the corresponding compressor energy efficiency when the channel bend angle α is 12.5°.

[0022] The reference numerals in the attached figures are as follows:

[0023] 11. First exhaust muffler chamber; 21. Second exhaust muffler chamber; 3. Pump body exhaust port; 4. Tesla valve pipe; 41. Forward inlet; 42. Forward outlet; 43. Main flow channel; 44. Branch channel; 51. First valve plate; 52. First valve plate baffle; 61. Second valve plate; 62. Second valve plate baffle; 71. Upper flange; 72. Upper muffler; 73. Lower flange; 74. Lower muffler; 75. First cylinder; 76. Second cylinder; 77. Baffle; 78. Crankshaft; 79. First roller; 80. Second roller. Detailed Implementation

[0024] See also Figures 1 to 6 As shown, according to an embodiment of the present invention, a pump body assembly is provided, including a first exhaust silencing chamber 11 and a corresponding first exhaust valve assembly, a second exhaust silencing chamber 21 and a corresponding second exhaust valve assembly, and a pump body exhaust port 3. The first exhaust silencing chamber 11 and the second exhaust silencing chamber 21 are connected by a flow channel. The pump body exhaust port 3 is correspondingly disposed to the first exhaust silencing chamber 11. A Tesla valve tube 4 (also referred to as a Tesla valve) is disposed within the flow channel, and the forward inlet 41 of the Tesla valve tube 4 is correspondingly disposed to the second exhaust silencing chamber 21, and the forward outlet 42 of the Tesla valve tube 4 is correspondingly disposed to the first exhaust silencing chamber 11. See details. Figure 1 or Figure 4As shown, the first exhaust valve assembly specifically includes a first valve plate 51 with a certain rigidity and a first valve plate baffle 52 that can limit the opening angle of the first valve plate 51. The second exhaust valve assembly includes a second valve plate 61 with a certain rigidity and a second valve plate baffle 62 that can limit the opening angle of the second valve plate 61. The aforementioned Tesla valve tube 4 can be a Tesla valve tube of the prior art.

[0025] In this technical solution, a Tesla valve tube 4 is installed in the flow channel. This fully utilizes the characteristics of the Tesla valve tube 4, which accelerates conduction in the forward direction and hinders conduction in the reverse direction. This greatly reduces the pressure drop of the exhaust airflow discharged from the second exhaust valve assembly into the second exhaust muffler chamber 21 before it flows into the first exhaust muffler chamber 11 and mixes with the exhaust airflow discharged from the first exhaust valve assembly. This minimizes the pressure difference of the airflow in the two exhaust muffler chambers, i.e., the back pressure difference of the two exhaust valve assemblies. This makes the opening time of the exhaust valve plates in the two exhaust valve assemblies as consistent as possible (i.e., reducing the opening time difference), thereby reducing the pressure loss and vibration aggravation caused by exhaust pulsation. In addition, the reverse hindering conduction of the Tesla valve tube has the function of preventing backflow, which can prevent the adverse effects of increased power consumption caused by backflow.

[0026] The specific construction of the aforementioned flow channel is determined based on the specific pump body structure. For example, Figure 1 In the single-cylinder double-row pump assembly shown, the flow passage is specifically formed by the lower flange 73, the upper flange 71, and the coaxially arranged through holes on the first cylinder 75 clamped by the two. The Tesla valve tube 4 can be assembled in the flow passage in an interference fit manner; for example, Figure 4 In the dual-cylinder single-stage pump body assembly shown, the flow passage is specifically composed of a lower flange 73, an upper flange 71, a partition 77, and coaxially arranged through holes on the first cylinder 75 and the second cylinder 76, which are respectively clamped by two of the three. The Tesla valve tube 4 can be assembled in the flow passage in an interference fit manner.

[0027] See Figure 2 As shown, the Tesla valve tube 4 has a circulation section number of N, N≥4, and specifically N=5.5 shown in the figure, so that the Tesla valve tube 4 has a better positive acceleration and conduction effect on the airflow from the second exhaust muffler chamber 21 to the first exhaust muffler chamber 11, ensuring that the pressure difference is within a small range.

[0028] The inventors discovered that the channel angle α of the main flow channel 33 of the Tesla valve tube 4 has a significant impact on the forward acceleration and reverse obstruction effects of the valve tube. (See [reference needed]). Figure 5As shown, the Tesla valve tube 4 has a channel angle of α in its main flow channel 33, where 0° < α ≤ 25°. Within this range, the corresponding compressor has a high energy efficiency.

[0029] See also Figure 3 and Figure 6 As shown, the flow cross-section of the main flow channel 43 is rectangular, with a width of d, where 0.5mm ≤ d ≤ 2.0mm. Figure 6 As shown, within this range, the corresponding compressor has a relatively high energy efficiency. More preferably, in conjunction with [see reference 1]... Figure 5 and Figure 6 Experiments have verified that when the pump body assembly is a single-cylinder, double-exhaust pump, and the Tesla valve tube structural parameters are set as follows (N = 6, α = 12.5°, d = 2mm), the pressure pulsation during the compressor pump's exhaust process is significantly improved, and the overall compressor energy efficiency is increased by approximately 1%. When the pump body assembly is a double-cylinder, single-stage pump, with N = 8, α = 10°, and d = 2mm, the pressure pulsation during the compressor pump's exhaust process is significantly improved, and the overall compressor energy efficiency is increased by approximately 1.2%.

[0030] It should be noted that, as Figure 3 As shown, the Tesla valve tube 4 has a cuboid structure and has geometric parameters such as valve tube width K, valve tube thickness H, and valve tube length L. These parameters do not directly affect the effect of the Tesla valve, so the present invention does not limit them.

[0031] Since the cross-sectional area of ​​the main flow channel 33 inside the Tesla valve tube 4 is not advantageous compared to the cross-sectional area of ​​the original pump body circular DC through-hole (i.e., the aforementioned flow channel), there should be no fewer than two flow holes in the pump body used to house the Tesla valve tube. This ensures that the overall airflow velocity of the Tesla valve tube 4 is not lower than that of the original circular DC through-hole. In other words, there should be at least two flow channels, and each flow channel should contain a Tesla valve tube 4. It should be noted that since the Tesla valve tube 4 is not a completely hollow structure and has a certain strength, more flow holes for housing the Tesla valve tube can be opened within the pump body, provided that the structural space allows, without significantly affecting the structural strength of the pump body.

[0032] Figure 1 The diagram shows a single-cylinder, double-exhaust pump body, in which a first exhaust silencing chamber 11 is formed between the upper muffler 72 and the upper flange 71, and a second exhaust silencing chamber 21 is formed between the lower muffler 74 and the lower flange 73. A first exhaust valve assembly is disposed on the upper exhaust port of the upper flange 71 and located within the upper muffler 72, and a second exhaust valve assembly is disposed on the lower exhaust port of the lower flange 73 and located within the lower muffler 74. Figure 4 The dual-cylinder single-stage pump shown is configured similarly and will not be described in detail.

[0033] According to an embodiment of the present invention, a compressor is also provided, including the pump body assembly described above.

[0034] According to an embodiment of the present invention, an air conditioner is also provided, including the compressor described above.

[0035] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A pump body assembly, comprising a first exhaust silencing chamber (11) and a corresponding first exhaust valve assembly, a second exhaust silencing chamber (21) and a corresponding second exhaust valve assembly, and a pump body exhaust port (3), wherein the first exhaust silencing chamber (11) and the second exhaust silencing chamber (21) are connected by a flow channel, and the pump body exhaust port (3) is correspondingly disposed with respect to the first exhaust silencing chamber (11), characterized in that, The flow channel is provided with a Tesla valve tube (4), and the forward inlet (41) of the Tesla valve tube (4) is corresponding to the second exhaust muffler chamber (21), and the forward outlet (42) of the Tesla valve tube (4) is corresponding to the first exhaust muffler chamber (11). The forward acceleration conduction and reverse obstruction conduction characteristics of the Tesla valve tube are used to reduce the pressure difference of the airflow in the first exhaust muffler chamber (11) and the second exhaust muffler chamber (21) to achieve consistency in the opening time of the exhaust valve plates in the first exhaust valve assembly and the second exhaust valve assembly. The number of circulation sections of the Tesla valve tube (4) is N, N≥4. The channel angle of the main flow channel (43) of the Tesla valve tube (4) is α, 0°<α≤25°. The flow cross section of the main flow channel (43) is rectangular, and the width of the rectangle is d, 0.5mm≤d≤2.0mm.

2. The pump body assembly according to claim 1, characterized in that, When the pump assembly is a single-cylinder, double-row pump, N=6. d=2mm; or, when the pump body assembly is a dual-cylinder single-stage pump body, N=8, α=10°, d=2mm.

3. The pump body assembly according to claim 1, characterized in that, The flow passage has at least two, and each flow passage is provided with the Tesla valve tube (4).

4. The pump body assembly according to claim 1, characterized in that, The pump body assembly is a single-cylinder, double-row pump body.

5. The pump body assembly according to claim 1, characterized in that, The pump assembly is a dual-cylinder single-stage pump.

6. A compressor, characterized in that, Includes the pump body assembly according to any one of claims 1 to 5.

7. An air conditioner, characterized in that, Includes the compressor described in claim 6.

Images