Liquid separation structure and air conditioning with high liquid separation efficiency

Abstract

The present invention provides a liquid separation structure and an air conditioner with high liquid separation efficiency. The liquid separation structure includes a shell and an inner tube, and the inner surface of the inner tube is provided with a first spiral flow channel. The liquid separation structure and the air conditioner with high liquid separation efficiency provided by the present invention are provided with an inner tube inside the shell, and a first spiral flow channel and a second spiral flow channel are provided to perform turbulent mixing on the unevenly distributed refrigerant, and the first spiral flow channel and the second spiral flow channel are used to respectively perform corresponding mixing and separation for the refrigerant in different gas-liquid distribution states, thereby realizing annular distribution of liquid phase refrigerant, increasing the uniformity of the refrigerant at the liquid separation pipe, and providing a through hole to connect the first spiral flow channel and the second spiral flow channel, thereby reducing the flow resistance inside the liquid separation structure as much as possible, and the through hole is used to cooperate with the first spiral flow channel and the second spiral flow channel to form an anti-muffler structure, so that the noise caused by the flow of the refrigerant can be effectively suppressed or even eliminated by the muffler structure.

Description

Technical Field

[0001] The invention relates to the technical field of air treatment equipment, in particular to a liquid separation structure and an air conditioner with high liquid separation efficiency. Background Art

[0002] In order to ensure the good heat exchange capacity of the evaporator, a liquid distributor is required to increase the number of refrigerant flow paths. At the same time, after the refrigerant passes through the throttling element, the pressure changes instantly, causing a flash phase change, and the refrigerant in the liquid distributor assembly is in a gas-liquid two-phase mixed state. As the two-phase refrigerant flows in the connecting pipe between the throttling element and the evaporator, the difference in flow velocity between the two phases and the continuous influence and drive of the interphase force cause the gas-liquid two-phase state of the refrigerant to present unstable asymmetric flow patterns such as stratified flow and wave flow at different sections of the pipeline, resulting in uneven liquid distribution by the liquid distributor. When the liquid distributor is installed at an angle, the uneven liquid distribution of the liquid distributor is aggravated, and the anti-interference ability is poor, which affects the heat exchange of the heat exchanger. Summary of the invention

[0003] In order to solve the technical problem of poor liquid separation efficiency of the liquid separation mechanism in the prior art, a liquid separation structure and an air conditioner with high liquid separation efficiency and an inner tube and a spiral flow channel are provided to increase the distribution uniformity.

[0004] A liquid separation structure, comprising:

[0005] A shell, wherein a first end of the shell is provided with an inlet, and a second end of the shell is provided with a plurality of liquid dispensing tubes;

[0006] An inner tube is disposed in the shell, and a first flow channel is formed inside the inner tube, and a second flow channel is formed between an outer surface of the inner tube and an inner surface of the shell;

[0007] The inner surface of the inner tube is provided with a first spiral flow channel;

[0008] Of the refrigerant flowing in from the inlet, part of the refrigerant flows from the first flow channel to the second end of the shell, and the remaining part of the refrigerant flows from the second flow channel to the second end of the shell, and flows out from the liquid distribution tube after being mixed at the second end.

[0009] The liquid separation structure further includes an inner spiral structure, which is disposed on the inner surface of the inner tube and surrounds the first spiral flow channel on the inner surface of the inner tube.

[0010] The inner tube is a cylinder, and the axis of the inner spiral structure is colinear with the axis of the cylinder.

[0011] The outer surface of the inner tube is provided with a flow guiding structure, and the flow guiding structure forms a second spiral flow channel on the outer surface of the inner tube.

[0012] The flow guiding structure has an inner edge and an outer edge opposite to each other, the inner edge is arranged on the outer surface of the inner tube, and the outer edge is sealed with the inner surface of the shell.

[0013] The guide structure includes at least two guide plates, which are arranged on the outer surface of the inner tube in a spiral shape, and a second spiral flow channel is formed between two adjacent guide plates.

[0014] The spiral shape of each guide vane is the same, and the distance between two adjacent guide vanes is equal.

[0015] The inner tube is provided with a through hole, and the first flow channel and the second flow channel are communicated through the through hole.

[0016] The first end of the through hole is located in the first spiral flow channel.

[0017] The axis of the through hole and the axis of the inner tube form an included angle, and the angle of the included angle is less than 90°.

[0018] The shell is a cylindrical structure, and the outer diameter of the inner tube is 0.15 to 0.8 times the inner diameter of the shell.

[0019] The outflow direction of the inlet is directed toward the inner tube.

[0020] The axis of the inlet is colinear with the axis of the inner tube.

[0021] The liquid separation structure further comprises a blocking member, and the blocking member is arranged at an end of the inner tube away from the inlet.

[0022] The shell is a cylindrical structure, and the axis of the liquid dispensing tube passes through the axis of the shell; or the shell is a cylindrical structure, and the liquid dispensing tube is arranged tangent to the shell.

[0023] A filtering mechanism is arranged at the inlet.

[0024] The diameter of the through hole ranges from 0.5 mm to 2 mm.

[0025] An air conditioner comprises the above-mentioned liquid separation structure.

[0026] The liquid separation structure and air conditioner with high liquid separation efficiency provided by the present invention are equipped with an inner tube inside the shell, and a first spiral flow channel and a second spiral flow channel are arranged to perform turbulent mixing on the unevenly distributed refrigerant, and the first spiral flow channel and the second spiral flow channel are used to perform corresponding mixing and separation for the refrigerant in different gas-liquid distribution states, thereby realizing annular distribution of liquid phase refrigerant and increasing the uniformity of the refrigerant at the liquid separation pipe, and a through hole is arranged to connect the first spiral flow channel and the second spiral flow channel to minimize the flow resistance inside the liquid separation structure, and the through hole is used to cooperate with the first spiral flow channel and the second spiral flow channel to form an anti-muffler structure, so that the noise caused by the flow of the refrigerant can be effectively suppressed or even eliminated through the muffler structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a liquid separation structure with high liquid separation efficiency and a liquid separation structure of an embodiment of an air conditioner provided by the present invention;

[0028] Figure 2 A schematic diagram of the structure of the inner tube and the flow guide structure of the liquid separation structure with high liquid separation efficiency and the air conditioner embodiment provided by the present invention;

[0029] Figure 3 Another structural schematic diagram of the inner tube and the flow guide structure of the liquid separation structure with high liquid separation efficiency and the air conditioner embodiment provided by the present invention;

[0030] Figure 4 A schematic diagram of the structure of the inner tube of an embodiment of a liquid separation structure with high liquid separation efficiency and an air conditioner provided by the present invention;

[0031] Figure 5 A cross-sectional view of an inner tube of an embodiment of a liquid separation structure with high liquid separation efficiency and an air conditioner provided by the present invention;

[0032] Figure 6 A schematic structural diagram of a liquid separation structure with high liquid separation efficiency and an air conditioner embodiment provided by the present invention, wherein the inner tube is provided with a plugging member;

[0033] Figure 7 Another structural schematic diagram of a liquid separation structure with high liquid separation efficiency and a liquid separation structure of an embodiment of an air conditioner provided by the present invention;

[0034] In the figure:

[0035] 1. Shell; 11. Inlet; 12. Liquid distribution tube; 2. Inner tube; 3. First spiral flow channel; 4. Flow guide structure; 21. Through hole; 5. Blocking piece;. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] like Figures 1 to 7 The liquid separation structure shown comprises: a shell 1, wherein the first end of the shell 1 is provided with an inlet 11, and the second end of the shell 1 is provided with a plurality of liquid separation tubes 12; an inner tube 2 is provided in the shell 1, and the interior of the inner tube 2 forms a first flow channel, and the outer surface of the inner tube 2 and the inner surface of the shell 1 form a second flow channel; the inner surface of the inner tube 2 is provided with a first spiral flow channel 3; of the refrigerant flowing in from the inlet 11, part of the refrigerant flows from the first flow channel to the second end of the shell 1, and the remaining part of the refrigerant flows from the second flow channel to the second end of the shell 1, and in the The refrigerant at the second end is mixed and flows out from the liquid separation tube 12. The inner tube 2 is used to divide the refrigerant flowing into the inlet 11 into two parts. The tubular shape of the first flow channel and the annular shape of the second flow channel are used to perform turbulent mixing on different states of the refrigerant, and the first spiral flow channel 3 is used to make the refrigerant entering the first flow channel undergo centrifugal motion. Since the internal size of the inner tube 2 is relatively small, the gas-liquid two-phase refrigerant is accelerated and circulated inside the first spiral flow channel 3, which in turn promotes the gradual mixing of the gas-liquid two-phase refrigerant, thereby increasing the uniformity of the refrigerant, thereby ensuring that the uniformity of the refrigerant reaching the liquid separation tube 12 is consistent, thereby achieving the purpose of increasing the liquid separation effect.

[0038] The liquid separation structure further includes an inner spiral structure, which is disposed on the inner surface of the inner tube 2 , and the inner spiral structure forms the first spiral flow channel 3 on the inner surface of the inner tube 2 .

[0039] The inner tube 2 is a cylinder, and the axis of the inner spiral structure is colinear with the axis of the cylinder, thereby ensuring the uniformity of the first spiral flow channel 3 and avoiding unstable flow rate of the refrigerant inside the inner tube 2 and affecting the mixing effect of the refrigerant.

[0040] The outer surface of the inner tube 2 is provided with a guide structure 4, and the guide structure 4 forms a second spiral flow channel on the outer surface of the inner tube 2, so that the refrigerant entering the second flow channel also performs centrifugal motion. Because the size of the shell 1 is large, the liquid refrigerant gradually diffuses to the tube wall under the action of centrifugal force. However, due to the mutual pulling force between the gas-phase refrigerant and the liquid-phase refrigerant, and the different states of the refrigerant entering the second flow channel, the separation effects are different and limited. The refrigerant close to the inner tube 2 is less disturbed, and it is difficult for the gas-liquid two-phase separation to occur, so that the two-phase refrigerant flow rate flowing out of each branch is more evenly distributed, ensuring that a better diversion effect can be achieved for different incoming flow states, thereby improving the consistency of liquid separation.

[0041] The guide structure 4 has a relative inner edge and an outer edge, the inner edge is arranged on the outer surface of the inner tube 2, and the outer edge is sealed with the inner surface of the shell 1, so that the flow entering the second flow channel must flow according to the second spiral flow channel defined by the guide structure 4, thereby ensuring the turbulent mixing effect of the second spiral flow channel.

[0042] The number of turns of the second spiral flow channel formed by the flow-guiding structure 4 on the outer surface of the inner tube 2 is in the range of 2-3 turns.

[0043] The guide structure 4 includes at least two guide plates, which are spirally arranged on the outer surface of the inner tube 2, and a second spiral flow channel is formed between two adjacent guide plates, that is, a multi-section spiral structure is formed inside the second flow channel, thereby reducing the fluid resistance of the guide structure 4 to the refrigerant, increasing the liquid separation effect of the liquid separation structure and reducing the pressure loss generated by the liquid separation structure.

[0044] The spiral shape of each guide plate is the same, and the spacing between two adjacent guide plates is equal, ensuring the uniformity of the second spiral flow channel, thereby ensuring the reliability of the turbulent mixing of the refrigerant in the second fluid channel.

[0045] Preferably, each guide plate rotates half a circle along the outer surface of the inner tube 2.

[0046] The inner tube 2 is provided with a through hole 21, and the first flow channel and the second flow channel are connected through the through hole 21, so that the refrigerant entering the first flow channel flows from the through hole 21 to the second flow channel, and the refrigerant in the first flow channel is made to flow out at a higher speed by utilizing the through hole 21, impacting the refrigerant in the second flow channel, increasing disturbance, and accelerating the mixing of the refrigerant in the second flow channel, so that the liquid refrigerant is distributed as evenly as possible near the inner surface of the shell 1, and the gas-liquid two-phase of the refrigerant in the middle of the shell 1 is evenly mixed, so that the two-phase refrigerant flow rate flowing out from each branch is more evenly distributed, and at the same time, the refrigerant can flow out from the end of the inner tube 2 away from the inlet 11, thereby weakening the flow impact effect of the through hole 21 and reducing the noise generated by the through hole 21.

[0047] The first end of the through hole 21 is located in the first spiral flow channel 3 , so that even if the refrigerant centrifugally flowing in the first spiral flow channel 3 enters the second flow channel through the through hole 21 , the impact force of the refrigerant flowing out of the through hole 21 is increased.

[0048] The axis of the through hole 21 and the axis of the inner tube 2 have an angle, and the angle is less than 90°, so that the flow direction of the through hole 21 matches the flow direction in the second flow channel, thereby increasing the liquid separation effect.

[0049] The shell is a cylindrical structure, and the outer diameter D2 of the inner tube is 0.15 to 0.8 times the inner diameter D1 of the shell, ensuring that the size of the inner tube 2 can meet the purpose of accelerating the refrigerant.

[0050] The outflow direction of the inlet 11 is directed toward the inner tube 2 , thereby increasing the amount of refrigerant entering the first flow channel.

[0051] The axis of the inlet 11 is colinear with the axis of the inner tube 2 .

[0052] The liquid separation structure also includes a sealing member 5, which is arranged at the end of the inner tube 2 away from the inlet 11, so that the refrigerant entering the first flow channel must flow out from the through hole 21, further increasing the influence of the first flow channel on the second flow channel. Preferably, the sealing member 5 is integrally formed with the inner tube 2.

[0053] The shell 1 is a cylindrical structure, and the axis of the liquid dispensing tube 12 passes through the axis of the shell 1; or the shell 1 is a cylindrical structure, and the liquid dispensing tube 12 is arranged tangent to the shell 1, so that more liquid refrigerant on the inner surface of the shell 1 enters the liquid dispensing tube 12, increasing the amount of liquid refrigerant in the liquid dispensing tube 12, thereby improving the liquid dispensing effect.

[0054] The inlet 11 is provided with a filtering mechanism to filter the refrigerant entering the shell 1 to ensure the reliability of the liquid separation structure.

[0055] The diameter of the through hole 21 is in the range of 0.5 mm to 2 mm, so as to prevent the refrigerant from generating additional flow-induced noise when being ejected from the through hole 21 .

[0056] An air conditioner comprises the above-mentioned liquid separation structure.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A liquid separation structure, characterized in that: include: A shell (1), wherein a first end of the shell (1) is provided with an inlet (11), and a second end of the shell (1) is provided with a plurality of liquid dispensing tubes (12); An inner tube (2) is arranged in the shell (1), and a first flow channel is formed inside the inner tube (2), and a second flow channel is formed between the outer surface of the inner tube (2) and the inner surface of the shell (1); The inner surface of the inner tube (2) is provided with a first spiral flow channel (3); Of the refrigerant flowing in from the inlet (11), part of the refrigerant flows from the first flow channel to the second end of the shell (1), and the remaining part of the refrigerant flows from the second flow channel to the second end of the shell (1), and after being mixed at the second end, flows out from the liquid dispensing tube (12); The inner tube (2) is provided with a through hole (21), and the first flow channel and the second flow channel are connected through the through hole (21); The liquid separation structure further comprises a blocking member (5), wherein the blocking member (5) is arranged at an end of the inner tube (2) away from the inlet (11).

2. The liquid separation structure according to claim 1, characterized in that: The liquid separation structure further comprises an inner spiral structure, which is arranged on the inner surface of the inner tube (2), and the inner spiral structure forms the first spiral flow channel (3) on the inner surface of the inner tube (2).

3. The liquid separation structure according to claim 2, characterized in that: The inner tube (2) is a cylinder, and the axis of the inner spiral structure is colinear with the axis of the cylinder.

4. The liquid separation structure according to claim 1, characterized in that: The outer surface of the inner tube (2) is provided with a flow guiding structure (4), and the flow guiding structure (4) forms a second spiral flow channel on the outer surface of the inner tube (2).

5. The liquid separation structure according to claim 4, characterized in that: The flow-guiding structure (4) has an inner edge and an outer edge that are opposite to each other, the inner edge being arranged on the outer surface of the inner tube (2), and the outer edge being sealed to the inner surface of the shell (1).

6. The liquid separation structure according to claim 4, characterized in that: The guide structure (4) comprises at least two guide plates, which are arranged in a spiral shape on the outer surface of the inner tube (2), and a second spiral flow channel is formed between two adjacent guide plates.

7. The liquid separation structure according to claim 6, characterized in that: The spiral shape of each guide vane is the same, and the distance between two adjacent guide vanes is equal.

8. The liquid separation structure according to claim 1, characterized in that: The first end of the through hole (21) is located in the first spiral flow channel (3).

9. The liquid separation structure according to claim 3, characterized in that: The shell (1) is a cylindrical structure, and the outer diameter dimension D2 of the inner tube (2) is 0.15 times to 0.8 times the inner diameter dimension D1 of the shell (1).

10. The liquid separation structure according to claim 1, characterized in that: The shell (1) is a cylindrical structure, and the axis of the liquid dispensing tube (12) passes through the axis of the shell (1); or the shell (1) is a cylindrical structure, and the liquid dispensing tube (12) is arranged tangentially to the shell (1).

11. The liquid separation structure according to claim 1, characterized in that: A filtering mechanism is provided at the inlet (11).

12. The liquid separation structure according to claim 1, characterized in that: The diameter of the through hole (21) ranges from 0.5 mm to 2 mm.

13. An air conditioner, characterized in that: The invention comprises the liquid separation structure according to any one of claims 1 to 12.

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