Receivers, Refrigeration System Components and Refrigerators

Abstract

The present application provides a liquid storage device, a refrigeration system component and a refrigerator. The liquid storage device includes a cylinder, an inlet is provided on the cylinder, a vortex channel is provided in the cylinder, and the inlet is connected to a port of the vortex channel; when the gas-liquid mixed refrigerant flows into the vortex channel from the inlet, centrifugal gas-liquid separation can occur. The vortex channel is provided in the liquid storage device, and the centrifugal phenomenon that occurs when the gas-liquid mixed refrigerant flows in the vortex channel can be used to better perform gas-liquid separation, thereby improving the gas-liquid separation effect.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigerators, and in particular relates to a liquid storage device, a refrigeration system component and a refrigerator. Background Art

[0002] Liquid accumulators are often used in refrigeration systems. They are placed before the compressor inlet to separate gas from liquid and store liquid refrigerant to avoid liquid hammering and damage to the compressor. Liquid accumulators in existing refrigerators are mostly tube-inserted structures in a cylinder. Liquid accumulators of this structure mainly rely on the difference in density between gas and liquid phases to separate liquid refrigerant under the action of gravity to prevent liquid hammering of the compressor. However, the separation effect of separating gas and liquid phases by gravity is poor. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present application is to provide a liquid storage device, a refrigeration system component and a refrigerator that can achieve a better gas-liquid separation effect.

[0004] In order to solve the above problems, the present application provides a liquid storage device, including a cylinder, an inlet is provided on the cylinder, a vortex channel is included in the cylinder, and the inlet is connected to a port of the vortex channel; when the gas-liquid mixed refrigerant flows into the vortex channel from the inlet, centrifugal gas-liquid separation can occur.

[0005] Preferably, the cylinder further includes a gravity separation chamber, and the gravity separation chamber is communicated with another port of the vortex channel.

[0006] Preferably, the axial side surface of the vortex channel is configured as an inclined surface so that all refrigerants can be discharged from the other port of the vortex channel.

[0007] Preferably, another port of the vortex channel is arranged in the vortex axis direction of the vortex channel and is communicated with the gravity separation chamber located below the vortex channel.

[0008] Preferably, a liquid outlet is provided at the bottom of the gravity separation chamber.

[0009] Preferably, the cross-section of the other end of the vortex channel is a region enclosed by a tangent line at an end point of an inner vortex of the vortex channel and the inner vortex.

[0010] Preferably, a blocking body is provided on the other port of the vortex channel, and the blocking body is arranged in the cross section and extends toward the vortex center along the radial direction of the end point of the inner vortex circle.

[0011] Preferably, the length of the blocking body is 3-8 mm.

[0012] According to another aspect of the present application, a refrigeration system is provided, comprising the liquid storage device as described above.

[0013] Preferably, the liquid accumulator is arranged between the evaporator and the compressor of the refrigeration system; when the liquid accumulator includes a liquid outlet, the liquid outlet is communicated with the evaporator inlet.

[0014] According to yet another aspect of the present application, a refrigerator is provided, comprising the liquid storage device as described above or the refrigeration system as described above.

[0015] The present application provides a liquid storage device, comprising a cylinder, an inlet is provided on the cylinder, a vortex channel is provided in the cylinder, the inlet is connected to a port of the vortex channel; when the gas-liquid mixed refrigerant flows into the vortex channel from the inlet, centrifugal gas-liquid separation can occur. The vortex channel is provided in the liquid storage device, and the centrifugal phenomenon that occurs when the gas-liquid mixed refrigerant flows in the vortex channel can be used to better perform gas-liquid separation, thereby improving the gas-liquid separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the liquid storage device according to an embodiment of the present application;

[0017] Figure 2 An axial cross-sectional view of a liquid reservoir according to an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the cutaway structure of the upper end of the liquid storage device according to an embodiment of the present application;

[0019] Figure 4 The liquid storage device of the embodiment of the present application Figure 3 A top view of

[0020] Figure 5 A connection diagram of a refrigeration system according to an embodiment of the present application.

[0021] The reference numerals are:

[0022] 1. Compressor; 2. Condenser; 3. Dry filter; 4. Return air pipe assembly; 5. Evaporator; 6. Liquid storage tank; 61. Inlet; 62. Cylinder; 621. Vortex channel; 6211. Inner vortex; 6212. Blocking body; 6213. Inclined surface; 622. Gravity separation chamber; 63. Air outlet; 631. Exhaust hole; 64. Liquid outlet; 7. One-way valve; 8. Second throttling device. DETAILED DESCRIPTION

[0023] See also Figures 1 to 4As shown, according to an embodiment of the present application, a liquid storage device 6 includes a cylinder 62, an inlet 61 is provided on the cylinder 62, a vortex channel 621 is included in the cylinder 62, and the inlet 61 is connected to a port of the vortex channel 621; when the gas-liquid mixed refrigerant flows into the vortex channel 621 from the inlet 61, centrifugal gas-liquid separation can occur.

[0024] An inlet 61 is provided on the cylinder 62 of the liquid storage tank 6 to facilitate the entry of the gas-liquid mixed refrigerant. The vortex channel 621 connected to the inlet 61 has a vortex structure. When the gas-liquid mixed refrigerant flows in the vortex channel 621, a gas-liquid centrifugal separation phenomenon will occur, that is, the liquid refrigerant with high density will be centrifugally separated to the wall of the vortex channel 621 and be intercepted. Compared with the traditional liquid storage tank 6 in which the gas-liquid mixed refrigerant is separated under gravity only by density difference, the separation effect of the present liquid storage tank 6 is better.

[0025] In some embodiments, the cylinder 62 further includes a gravity separation chamber 622 , and the gravity separation chamber 622 is connected to another port of the vortex channel 621 .

[0026] The refrigerant after centrifugal separation in the vortex channel 621 is not necessarily completely separated. By connecting the gravity separation chamber 622 with another port of the vortex channel 621, it can further utilize the density difference for separation, such as the gas phase refrigerant rises and the liquid phase refrigerant falls, thereby improving the separation effect.

[0027] In some embodiments, the axial side surface of the vortex channel 621 is configured as an inclined surface 6213 so that all refrigerants can be discharged from another port of the vortex channel 621 .

[0028] The axial side surface of the vortex channel 621 adopts an inclined surface 6213 structure. The two-phase refrigerant separated in the vortex channel 621 can quickly flow out of the vortex channel 621 under the guidance of the inclined surface 6213.

[0029] The inclined surface 6213 can be specifically an arc surface, a conical surface, etc. If the notch faces upward, the concave bottom can quickly guide out the liquid refrigerant; when the vortex channel 621 is arranged at the top of the cylinder 62, the bottom surface of the vortex channel 621 can be set as the inclined surface 6213, which can guide out the liquid refrigerant; when the vortex channel 621 is arranged in the middle of the cylinder 62, the top and bottom surfaces of the vortex channel 621 can be set as the inclined surface 6213. The inclined setting of the top surface can facilitate the guidance of the gas-phase refrigerant, and the inclined setting of the bottom surface can guide out the liquid-phase refrigerant.

[0030] In some embodiments, another port of the vortex channel 621 is disposed in the vortex axis direction of the vortex channel 621 and is communicated with the gravity separation chamber 622 located below the vortex channel 621 .

[0031] In this scheme, the vortex channel 621 is arranged above the gravity separation chamber 622, and the other port of the vortex channel 621 is the inner outlet in the axial direction, that is, the entrance of the vortex channel 621 is on the outer periphery of the vortex; the liquid refrigerant flowing out of the outlet directly drips to the bottom of the gravity separation chamber 622, and the outflowing gas refrigerant can rise along the inclined surface 6213 and then be discharged from the cylinder 62 through the air outlet 63. For the incompletely separated mixed refrigerant, it can continue to be separated under the action of gravity.

[0032] In some embodiments, a liquid outlet 64 is provided at the bottom of the gravity separation chamber 622 .

[0033] A liquid outlet 64 is provided at the bottom of the gravity separation chamber 622 to facilitate the discharge of liquid refrigerant, which can be used for other devices, such as being introduced into the evaporator 5 to continue absorbing heat and undergoing phase change.

[0034] In some embodiments, the cross section of the other end of the vortex channel 621 is a region enclosed by a tangent line at an end point of the inner vortex circle 6211 of the vortex channel 621 and the inner vortex circle 6211, such as Figure 4 The shaded surface shown.

[0035] The vortex channel 621 adopts the outlet with the above-mentioned cross-sectional shape, which is conducive to the liquid refrigerant attached to the wall surface of the vortex channel 621 under the action of centrifugal force to directly fall into the gravity separation chamber 622 under the action of gravity.

[0036] In some embodiments, a blocking body 6212 is provided on the other end of the vortex channel 621 , and the blocking body 6212 is arranged in the cross section and extends toward the vortex center along the radial direction of the end point of the inner vortex circle 6211 .

[0037] The extended blocking body 6212 can prevent the refrigerant flowing to the end of the vortex channel 621 from mixing with the refrigerant continuing to flow behind, thereby affecting the centrifugal separation effect of the wall surface at the end of the vortex channel 621.

[0038] Optionally, the length of the blocking body 6212 is 3-8 mm, preferably 5 mm.

[0039] The blocking body 6212 adopts the above-mentioned length to divide the flow cross section into two halves. If it is too long, the airflow at the end will be blocked and the local loss will increase. If it is too short, the airflow at the end will be ejected along the tangent, interfering with the flow of the fluid behind and affecting the effect of centrifugal separation.

[0040] According to another embodiment of the present application, a refrigeration system is provided, comprising the liquid storage device 6 as described above.

[0041] The use of the above-mentioned liquid storage device 6 in the refrigeration system can improve the separation effect, thereby reducing the occurrence of liquid hammer.

[0042] In some embodiments, the liquid reservoir 6 is disposed between the evaporator 5 and the compressor 1 of the refrigeration system; when the liquid reservoir 6 includes a liquid outlet 64 , the liquid outlet 64 is communicated with the inlet of the evaporator 5 .

[0043] The liquid refrigerant separated from the liquid storage device 6 flows back to the evaporator 5 and can be continuously used as a cold source, thereby improving the refrigeration capacity and system performance.

[0044] In the specific installation structure, a one-way valve 7 and a throttle are provided between the liquid outlet 64 and the inlet of the evaporator 5. By providing the one-way valve 7 and the throttle between the liquid outlet 64 and the evaporator 5, the one-way valve 7 ensures that the liquid refrigerant can only flow toward the inlet of the evaporator 5, and cannot flow in the opposite direction to cause liquid hammering of the compressor 1.

[0045] like Figure 5 A schematic diagram of the connection relationship of a refrigeration system is shown, and the refrigeration system includes a compressor 1, a condenser 2, a drying filter 3, a first throttling device, an evaporator 5, a liquid reservoir 6, a return air pipe and other components connected in sequence; wherein the first throttling device is a capillary tube, which forms a return air pipe assembly 4 with the return air pipe for heat exchange; the liquid outlet 64 of the liquid reservoir 6 is connected to the inlet of the evaporator 5, and a one-way valve 7 and a second throttling device 8 are connected therebetween in sequence, and the second throttling device 8 can optionally use a throttling valve.

[0046] As for the structure of the liquid storage device 6, it specifically includes a cylinder 62, a gas outlet 63 is provided on the top of the cylinder 62, an inlet 61 is provided on the side wall, and a liquid outlet 64 is provided on the bottom; the cylinder 62 includes a centrifugal separation area on the upper layer and a gravity separation area on the lower layer, and the centrifugal separation area is a vortex structure, and an arc-shaped partition wall is provided between the centrifugal separation area and the gravity separation area, and the arc-shaped partition wall is also the bottom surface of the vortex structure, and its concave surface faces upward, so that after centrifugal separation, the liquid refrigerant gathers at the bottom of the concave and flows out to the gravity separation area.

[0047] The inlet 61 is connected to the vortex structure tangentially along the wall of the cylinder 62. A through hole connected to the lower gravity separation zone is provided in the center of the vortex structure, which is the outlet. The cross section of this outlet is drawn along the tangent direction of the central end point of the vortex circle 6211 in the vortex body, and the area roughly enclosed by the straight line and the vortex circle 6211 in the vortex body is as follows: Figure 4 The shaded surface shown is the outlet cross section; a blocking body 6212 is also provided at the outlet, and the blocking body 6212 extends along the radial direction of the central end point of the inner vortex 6211.

[0048] An exhaust through hole 631 communicating with the air outlet 63 is also provided on the arc-shaped partition wall, so that the gravity separation area is connected with the air outlet 63 .

[0049] When the refrigeration system is working, the refrigerant flowing out of the evaporator 5 flows into the liquid accumulator 6 through the inlet 61 of the liquid accumulator 6. After gas-liquid separation, the gaseous refrigerant flows out from the gas outlet 63, and the liquid refrigerant is stored in the cylinder 62 and can also flow out of the liquid accumulator 6 through the liquid outlet 64.

[0050] When the gas-liquid mixed refrigerant enters the vortex structure through the inlet 61, the linear velocity can be considered to remain unchanged while the rotation radius gradually decreases during the process of flowing along the vortex from the outside to the inside. According to the formula F = mV 2 / R shows that the centrifugal force gradually increases, thus achieving a better effect than gravity separation.

[0051] According to yet another embodiment of the present application, a refrigerator is provided, comprising the liquid storage device 6 as described above or the refrigeration system as described above.

[0052] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0053] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A liquid storage device (6), comprising a cylinder (62), wherein the cylinder (62) is provided with an inlet (61), characterized in that: The cylinder (62) includes a vortex channel (621), and the inlet (61) is in communication with a port of the vortex channel (621); when the gas-liquid mixed refrigerant flows into the vortex channel (621) from the inlet (61), centrifugal gas-liquid separation can occur; The other port of the vortex channel (621) is arranged in the direction of the vortex axis of the vortex channel (621), and the cross section of the other port of the vortex channel (621) is a region enclosed by a tangent line at an end point of an inner vortex circle (6211) of the vortex channel (621) and the inner vortex circle (6211); A blocking body (6212) is provided on the other end of the vortex channel (621), and the blocking body (6212) is arranged in the cross section and extends toward the vortex center along the radial direction of the end point of the inner vortex circle (6211).

2. The liquid storage device (6) according to claim 1, characterized in that: The cylinder (62) further comprises a gravity separation chamber (622), and the gravity separation chamber (622) is in communication with another port of the vortex channel (621).

3. The liquid storage device (6) according to claim 2, characterized in that: The axial side surface of the vortex channel (621) is configured as an inclined surface (6213) so that all refrigerants can be discharged from another port of the vortex channel (621).

4. The liquid reservoir (6) according to claim 3, characterized in that: The other port of the vortex channel (621) is in communication with the gravity separation chamber (622) located below the vortex channel (621).

5. The liquid reservoir (6) according to claim 2, 3 or 4, characterized in that: A liquid outlet (64) is provided at the bottom of the gravity separation chamber (622).

6. The liquid reservoir according to claim 1, characterized in that The length of the blocking body (6212) is 3-8 mm.

7. A refrigeration system, characterized in that: It comprises a liquid reservoir (6) as described in any one of claims 1-6.

8. The refrigeration system according to claim 7, characterized in that: The liquid accumulator (6) is arranged between the evaporator (5) and the compressor (1) of the refrigeration system; when the liquid accumulator (6) includes a liquid outlet (64), the liquid outlet (64) is communicated with the inlet of the evaporator (5).

9. A refrigerator, characterized in that: It comprises a liquid storage device (6) as described in any one of claims 1 to 6 or a refrigeration system as described in any one of claims 7 to 8.

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