Sealing Structure with Multiple Sealing Effects and Chiller

Abstract

The present invention provides a sealing structure with multiple sealing effects and a water chiller. The sealing structure is disposed at the extrusion contact surface of two components. The sealing structure includes a gasket and a sealing groove formed on the extrusion contact surface of at least one of the components. The gasket is disposed between the extrusion contact surfaces of the two components. The sealing structure with multiple sealing effects and the water chiller provided by the present invention are provided with a sealing groove on the extrusion contact surface, and the gasket is extruded and deformed into the sealing groove by the extrusion force of the two components, so that an additional sealing effect can be added relative to the gasket. Moreover, by providing multiple sealing grooves and arranging them in proportion, and providing sealing rings, the sealing effect can be further enhanced, avoiding the leakage of external air into the water chiller system and causing a decrease in refrigeration efficiency, and overcoming the need to additionally provide a refrigeration system in the prior art, thus simplifying the control system of the water chiller.

Description

Technical Field

[0001] The invention relates to the technical field of device sealing, in particular to a sealing structure and a chiller with multiple sealing effects. Background Art

[0002] In order to mitigate the trend of global warming, according to the Kyoto Protocol and the Kigali Amendment, the use of R134a refrigerant is being restricted and will be banned. In order to seize the sales opportunities in the future chiller market, global chiller manufacturers are actively seeking alternatives to R134a, among which R1233zd(E) is considered to be the best alternative refrigerant. However, according to the analysis of the refrigeration cycle, during the operation of the chiller, the pressure of the low-pressure side (evaporator, compressor suction end) of the system of R1233zd(E) refrigerant is lower than the atmospheric pressure, causing the outside air to leak into the refrigerant system through the various sealed connections of the unit under the action of the pressure difference during the operation of the unit, and finally discharged into the condenser through the compressor. Since air cannot condense in the condenser and can only accumulate in the upper part of the condenser, the air in the condenser accumulates more and more, which makes the condensation pressure increase continuously, reduces the refrigeration efficiency of the chiller, and increases the operating energy consumption of the unit. In the prior art, an independent small refrigeration system is generally added. During the operation of the main unit, the refrigeration system is activated according to a specific procedure, and the gas on the upper part of the condenser is drained into the refrigeration system. After contacting and exchanging heat with its low-temperature heat exchanger, the refrigerant therein condenses into liquid, and the remaining non-condensable gas is discharged into the atmosphere, thereby reducing the non-condensable gas content in the main unit condenser and ensuring the heat exchange efficiency in the condenser, making the control system of the chiller very complicated. At the same time, the newly added small refrigeration system itself also consumes a certain amount of electrical power, which increases the power consumption of the whole machine and reduces the energy efficiency ratio of the whole machine. Summary of the invention

[0003] In order to solve the technical problem that the existing chiller needs to be equipped with an additional small refrigeration system, which causes the energy efficiency ratio of the whole machine to be reduced, a sealing structure and a chiller with multiple sealing effects are provided to increase the sealing effect and prevent the outside air from entering the system.

[0004] A sealing structure is arranged at the extrusion contact surface of two components, and the sealing structure includes a sealing gasket and a sealing groove opened on the extrusion contact surface of at least one of the components. The sealing gasket is arranged between the extrusion contact surfaces of the two components, and when the two components complete the sealing, part of the sealing gasket is deformed into the sealing groove.

[0005] The two components are locked by a threaded member, the sealing gasket and the sealing groove are both annular, and the sealing gasket and the sealing groove are both arranged around the circumference of the threaded member.

[0006] The axis of the gasket and the axis of the sealing groove are both collinear with the axis of the threaded part.

[0007] The number of the sealing grooves is multiple, and all the sealing grooves are arranged around the circumference of the threaded part. The gasket covers all the sealing grooves, and there is a spacing between two adjacent sealing grooves.

[0008] In the direction close to the axis of the threaded part, the spacing between two adjacent sealing grooves gradually increases.

[0009] The spacing between all the sealing grooves forms a geometric sequence or an arithmetic sequence.

[0010] An assembly contact surface adjacent to the extrusion contact surface is further provided between the two components, and a sealing ring is arranged between the assembly contact surfaces of the two components. The sealing ring, the sealing groove and the gasket form the sealing structure.

[0011] The number of the sealing rings is multiple, and they are arranged in sequence in the direction away from the extrusion contact surface.

[0012] There is a spacing between two adjacent sealing rings, and the spacing between all the sealing rings forms a geometric sequence or an arithmetic sequence.

[0013] A water chiller includes the above-mentioned sealing structure.

[0014] The sealing structure and the water chiller with multiple sealing effects provided by the present invention are provided with a sealing groove on the extrusion contact surface. The gasket is extruded and deformed into the sealing groove by the extrusion force of the two components, so that an additional sealing effect can be added relative to the gasket. Moreover, multiple sealing grooves are arranged in proportion, and the sealing rings are arranged, which can further increase the sealing effect, avoid the leakage of external air into the water chiller system and cause the decrease of refrigeration efficiency, and overcome the need for an additional refrigeration system in the prior art, thus simplifying the control system of the water chiller. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the sealing structure of the embodiment of the sealing structure and the water chiller with multiple sealing effects provided by the present invention;

[0016] Figure 2 It is Figure 1 a partial schematic view at A of

[0017] Figure 3 It is Figure 2 a partial schematic view at B of

[0018] Figure 4 It is Figure 2 a partial schematic view at C of

[0019] In the figure:

[0020] 1. Components; 11. Extrusion contact surface; 2. Sealing gasket; 3. Sealing groove; 12. Assembly contact surface; 4. Sealing ring. Specific implementation manner

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to 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.

[0022] As Figures 1 to 4 shown in the sealing structure, it is arranged at the extrusion contact surface 11 of two components 1. The sealing structure includes a sealing gasket 2 and a sealing groove 3 opened on the extrusion contact surface 11 of at least one of the components 1. The sealing gasket 2 is arranged between the extrusion contact surfaces 11 of the two components 1. When the two components 1 are sealed, part of the sealing gasket 2 deforms into the sealing groove 3. Using the deformation of the sealing gasket 2 entering the sealing groove 3 has an additional layer of sealing effect compared with the prior art that only uses the sealing gasket 2, thereby achieving a multiple sealing effect and avoiding the leakage of external air into the chiller system and causing a decrease in refrigeration efficiency.

[0023] The two components 1 are locked by threaded parts. The sealing gasket 2 and the sealing groove 3 are both annular, and the sealing gasket 2 and the sealing groove 3 are both arranged around the circumference of the threaded part. The threaded part is used to lock the two components 1. During the locking process of the threaded part, the extrusion contact surfaces 11 of the two components 1 approach each other, and finally the sealing gasket 2 is squeezed between the two components 1, and the sealing gasket 2 deforms into the sealing groove 3, increasing the sealing effect.

[0024] The axis of the sealing gasket 2 and the axis of the sealing groove 3 are both collinear with the axis of the threaded part, so that the distance from the sealing groove 3 to the hole groove opened for the threaded part on the component 1 is equal, thereby ensuring the sealing effect.

[0025] The number of the sealing grooves 3 is multiple, and all the sealing grooves 3 are arranged around the circumference of the threaded part. The sealing gasket 2 covers all the sealing grooves 3, and there is a spacing between adjacent two sealing grooves 3, thereby forming multiple sealing positions at the extrusion contact surface 11 and strengthening the sealing effect between the two components 1.

[0026] Along the direction close to the axis of the threaded part, the spacing between adjacent two sealing grooves 3 gradually increases. That is to say, the closer to the position of the external air, the denser the spacing between the sealing grooves 3, so as to effectively block the leakage path of the external air into the inside of the component 1.

[0027] The spacing between all the sealing grooves 3 forms a geometric sequence or an arithmetic sequence. Specifically, the number of the sealing grooves 3 and the spacing between the sealing grooves 3 are calculated according to the force condition between the two components 1.

[0028] An assembly contact surface 12 adjacent to the extrusion contact surface 11 is further provided between the two components 1, and a sealing ring 4 is arranged between the assembly contact surfaces 12 of the two components 1. The sealing ring 4, the sealing groove 3 and the gasket 2 form the sealing structure, and the sealing ring 4 is used to block the path for external air to enter the component 1 again, enhancing the sealing effect of the sealing structure.

[0029] The number of the sealing rings 4 is multiple, and they are arranged in sequence along the direction away from the extrusion contact surface 11, so as to form multiple layers of seals between the assembly contact surfaces 12 and enhance the sealing effect.

[0030] There is a spacing between two adjacent sealing rings 4, and the spacing between all the sealing rings 4 forms a geometric sequence or an arithmetic sequence. That is to say, the closer to the extrusion contact surface 11, the denser the spacing between the sealing rings 4, thereby effectively hindering the leakage path of external air into the component 1.

[0031] A water chiller includes the above-mentioned sealing structure.

[0032] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these 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 appended claims.

Claims

1. A sealing structure is provided at the extrusion contact surface (11) of two components (1), and is characterized in that: The sealing structure includes a gasket (2) and a sealing groove (3) formed on the extrusion contact surface (11) of at least one of the components (1). The gasket (2) is disposed between the extrusion contact surfaces (11) of the two components (1), and when the two components (1) are sealed, part of the gasket (2) deforms into the sealing groove (3); the two components (1) are locked by a threaded member. Both the gasket (2) and the sealing groove (3) are annular, and both the gasket (2) and the sealing groove (3) are disposed around the circumference of the threaded member; the number of the sealing grooves (3) is multiple, and all the sealing grooves (3) are disposed around the circumference of the threaded member. The gasket (2) covers all the sealing grooves (3), and there is a spacing between adjacent two of the sealing grooves (3); along the direction close to the axis of the threaded member, the spacing between adjacent two of the sealing grooves (3) gradually increases; there is also an assembly contact surface (12) adjacent to the extrusion contact surface (11) between the two components (1), and a sealing ring (4) is disposed between the assembly contact surfaces (12) of the two components (1). The sealing ring (4), the sealing groove (3) and the gasket (2) form the sealing structure; the number of the sealing rings (4) is multiple, and they are arranged in sequence along the direction away from the extrusion contact surface (11); there is a spacing between adjacent two of the sealing rings (4), and the spacing between all the sealing rings (4) forms a geometric progression or an arithmetic progression.

2. The sealing structure according to claim 1, wherein: The axis of the gasket (2) and the axis of the sealing groove (3) are both collinear with the axis of the threaded member.

3. The sealing structure according to claim 1, characterized in that: The spacing between all the sealing grooves (3) forms a geometric progression or an arithmetic progression.

4. A chiller, characterized in that: Comprising the sealing structure according to any one of claims 1 to 3.

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