Fixing structure for evaporator and gearbox of ice maker

Abstract

The utility model relates to the technical field of assembly of an evaporator and a gear box of an ice maker, and provides a fixing structure for the evaporator and the gear box of the ice maker, which comprises a limiting matching piece arranged at the connecting and matching part between the evaporator and the gear box, the two or more limiting matching pieces are arranged at the connecting and matching position between the evaporator and the gearbox in the circumferential direction at intervals. Axial and / or circumferential limiting assembly is formed between the evaporator and the gear box through more than two limiting matching pieces, and when the output shaft of the gear box is in transmission connection with the ice blade screw, the axis of the output shaft of the gear box and the axis of the ice blade screw are oppositely located on the same axis. The limiting matching pieces are arranged at intervals in the circumferential direction, multi-point constraint can be formed in the axial direction and / or the circumferential direction, and the assembling deviation phenomenon between the gear box and the evaporator after assembling is prevented. The axis of the output shaft of the gear box and the axis of the ice blade screw are kept on the same straight line, so that the problem of non-uniform stress of the motor caused by eccentricity is avoided, and the ice maker is prevented from generating larger noise during working.

Description

Technical Field

[0001] This utility model relates to the technical field of assembling the evaporator and gearbox of an ice maker, specifically to a fixing structure for the evaporator and gearbox of an ice maker. Background Technology

[0002] In an ice maker, the gearbox is typically fixed to a mounting plate with four screws, while the evaporator is independently fixed to the same mounting plate with three screws. Because the gearbox and evaporator use different fastening points, during assembly, insufficient machining precision of the mounting plate, improper screw tightening sequence, or loosening of the screws due to long-term vibration of the mounting plate during ice maker operation can all lead to concentricity deviations between the gearbox's output shaft and the evaporator's ice blade screw exceeding the allowable range.

[0003] When the concentricity deviation is too large, the transmission connection between the gearbox output shaft and the ice skate screw will generate an eccentric load, causing the motor to bear additional radial force during operation, which will lead to the following problems:

[0004] Uneven stress: The bearings and gears in the gearbox wear faster due to asymmetrical loads;

[0005] Structural deformation: Under long-term eccentric stress, the evaporator may undergo plastic deformation, causing the ice blade screw to deviate from its running trajectory, which may lead to a decrease in ice-making efficiency;

[0006] Vibration and noise: When the motor connected to the gearbox rotates at too high a speed, the eccentricity will cause second-order harmonic vibration, making the noise of the whole machine too loud. Utility Model Content

[0007] This invention proposes a fixing structure for the evaporator and gearbox of an ice maker. By incorporating two or more limiting fitting components, this structure achieves precise positioning and assembly between the gearbox and evaporator, significantly improving the transmission stability between the gearbox's output shaft and the ice blade screw. Specifically, the limiting fitting components are arranged at intervals along the circumference, forming multi-point constraints in the axial and / or circumferential directions, effectively preventing assembly misalignment between the gearbox and evaporator after assembly. When the gearbox output shaft and the ice blade screw are connected, their axes are forced to remain aligned, avoiding uneven motor force caused by eccentricity and preventing excessive noise during ice maker operation.

[0008] An ice maker evaporator and gearbox fixing structure designed for this purpose includes a limiting fitting component disposed at the connection and fitting point between the evaporator and the gearbox. There are two or more limiting fitting components. One end of the limiting fitting component is limited and abuts against the connection and fitting point between the gearbox and the evaporator. The two or more limiting fitting components are arranged at intervals along the circumference at the connection and fitting point between the evaporator and the gearbox.

[0009] The evaporator is equipped with an ice blade screw, and the gearbox is equipped with an output shaft that is driven and connected to the ice blade screw. The evaporator and the gearbox are connected by two or more limiting fittings to form an axial and / or circumferential limiting assembly, so that when the output shaft of the gearbox is driven and connected to the ice blade screw, the axes of the output shaft of the gearbox and the ice blade screw are located on the same axis.

[0010] The number of limiting fitting parts is two, and the evaporator and gearbox are connected by two limiting fitting parts to form a two-point line limiting assembly;

[0011] The number of limiting fitting parts is three, and the evaporator and gearbox are connected by the three limiting fitting parts to form a three-point surface limiting assembly.

[0012] A limiting groove is provided at the connection between the evaporator and the gearbox. When the evaporator and the gearbox are assembled, two or more limiting fittings are inserted into the limiting groove in a relatively limiting manner. The limiting fittings abut against the inner side of the limiting groove. The evaporator and the gearbox form an axial and / or circumferential limiting assembly through the cooperation of the limiting fittings and the limiting groove.

[0013] The limiting fitting has a claw-like structure with the upper part of the limiting groove open. The evaporator is assembled with the gearbox. The limiting fitting is inserted into the limiting groove from the upper part of the limiting groove, and two or more limiting fittings clamp the inner side of the limiting groove relative to each other.

[0014] An installation plate is provided between the evaporator and the gearbox. The evaporator and the gearbox are fixedly connected to the installation plate, and the installation plate is provided with a clearance opening at the connection and mating point between the evaporator and the gearbox. The clearance opening is provided with a corresponding limiting fitting, and the clearance opening and the limiting fitting form a clearance fit. The limiting fitting passes through the clearance opening during the assembly of the evaporator, the gearbox and the installation plate.

[0015] The mounting plate is provided with a first assembly hole for fixed connection with the gearbox.

[0016] The gearbox is provided with a connecting part coaxially arranged with the first mounting hole, and the connecting part is fixedly connected to the first mounting hole.

[0017] The mounting plate is provided with a second assembly hole for fixed connection with the evaporator.

[0018] The mounting plate has a groove that mates with the evaporator, and the evaporator has a connecting lug that is fixed on the mounting plate, as well as a mating part on the positioning groove.

[0019] The limiting fitting is provided on the end of the evaporator and extends axially along the outer side of the evaporator. The gearbox is provided with a limiting groove that mates with the limiting fitting. The limiting groove is either an annular groove or a limiting hole.

[0020] The beneficial technical effects of this utility model are as follows:

[0021] The ice maker's evaporator and gearbox fixing structure utilizes two or more limiting fitting components to achieve precise positioning and assembly between the gearbox and evaporator, significantly improving the transmission stability between the gearbox's output shaft and the ice blade screw. Specifically, the limiting fitting components are arranged at intervals along the circumference, forming multi-point constraints in the axial and / or circumferential directions, effectively preventing assembly misalignment between the gearbox and evaporator after assembly. When the gearbox output shaft and ice blade screw are connected, their axes are forced to remain aligned, avoiding uneven motor force caused by eccentricity and preventing excessive noise during ice maker operation. Attached Figure Description

[0022] Figure 1 This is an exploded view of the assembly structure between the evaporator, gearbox, and mounting plate according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the evaporator, gearbox and mounting plate in one embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal cross-sectional structure of an evaporator according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional assembly structure between the evaporator, gearbox and mounting plate in one embodiment of the present invention.

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] See Figures 1-5An ice maker evaporator and gearbox fixing structure includes a limiting fitting 3 disposed at the connection and fitting point between the evaporator 1 and the gearbox 2. One end of the limiting fitting 3 is limited and abuts against the connection and fitting point between the gearbox 2 and the evaporator 1. There are two or more limiting fittings 3, which are arranged at intervals along the circumference at the connection and fitting point between the evaporator 1 and the gearbox 2.

[0029] The evaporator 1 is equipped with an ice blade screw 4, and the gearbox 2 is equipped with an output shaft 2.1 that is drivenly connected to the ice blade screw 4. The evaporator 1 and the gearbox 2 are connected by two or more limiting fitting parts 3 to form an axial and / or circumferential limiting assembly to ensure the coaxial fit between the evaporator 1 and the gearbox 2. Thus, when the output shaft 2.1 of the gearbox 2 is drivenly connected to the ice blade screw 4, the axes of the output shaft 2.1 of the gearbox 2 and the ice blade screw 4 are located on the same axis.

[0030] The fixing structure of the evaporator 1 and gearbox 2 of the ice maker is equipped with two or more limiting fitting parts 3, which achieves precise limiting assembly of the gearbox 2 and evaporator 1, significantly improving the transmission stability between the output shaft 2.1 of the gearbox 2 and the ice blade screw 4. Specifically, the limiting fitting parts 3 are arranged at intervals along the circumference, which can form multi-point constraints in the axial and / or circumferential directions, effectively preventing assembly misalignment between the gearbox 2 and evaporator 1 after assembly. When the output shaft 2.1 of the gearbox 2 is connected to the ice blade screw 4, their axes are forced to be kept on the same straight line, avoiding uneven motor force caused by eccentricity and preventing excessive noise from the ice maker during operation.

[0031] In this embodiment, a motor 16 is provided on the outside of the gearbox 2 and is connected to the corresponding gear of the gearbox 2 via a transmission.

[0032] The number of the limiting fitting parts 3 is two, and the evaporator 1 and the gearbox 2 are connected by the two limiting fitting parts 3 to form a two-point line limiting assembly;

[0033] The number of limiting fitting parts 3 is three, and the evaporator 1 and the gearbox 2 are connected by the three limiting fitting parts 3 to form a three-point surface limiting assembly.

[0034] By further limiting the number of limiting fitting parts 3 to two or three, a geometrically stable structure of "two points forming a line" or "three points forming a surface" is formed. When two limiting fitting parts 3 are used, their symmetrical distribution can eliminate the circumferential rotational degree of freedom, ensuring that the alignment error between the output shaft 2.1 of the gearbox 2 and the ice blade screw 4 is within the corresponding process conditions; while the triangular distribution of three limiting fitting parts 3 can simultaneously constrain axial tilt and radial offset, ensuring the concentricity of the assembly between the evaporator 1 and the gearbox 2. This design achieves maximum positioning accuracy with the fewest limiting points, saving material costs compared to the traditional full-circumference positioning structure, and facilitating visual alignment during assembly. The elastic claw-like structure can achieve elastic fine-tuning in both two-point and three-point layouts, compensating for manufacturing tolerances and avoiding assembly stress caused by over-positioning.

[0035] A limiting groove 5 is provided at the connection between the evaporator 1 and the gearbox 2. When the evaporator 1 and the gearbox 2 are assembled, two or more limiting fitting parts 3 are inserted into the limiting groove 5 for relative limiting. The limiting fitting parts 3 abut against the inner side of the limiting groove 5. The evaporator 1 and the gearbox 2 form an axial and / or circumferential limiting assembly through the cooperation of the limiting fitting parts 3 and the limiting groove 5.

[0036] By adding a limiting groove 5 and a limiting fitting 3 for insertion and engagement, the positioning effect between the gearbox 2 and the evaporator 1 is achieved. The side wall of the limiting groove 5 can absorb radial impact loads, while the contact surface between the limiting fitting 3 and the bottom of the limiting groove 5 bears axial pressure, thereby reducing the displacement of the gearbox 2 under vibration conditions; the upper opening of the limiting groove 5 can be chamfered to prevent chipping during assembly.

[0037] The limiting fitting 3 has a claw-like structure, the upper part of the limiting groove 5 is open, the evaporator 1 is assembled with the gearbox 2, the limiting fitting 3 is inserted into the limiting groove 5 from the upper part of the limiting groove 5, and two or more limiting fittings 3 clamp the inner side of the limiting groove 5 relative to each other.

[0038] The claw-shaped limiting fitting 3 and the upper open limiting groove 5 constitute a "pin-guide rail" type quick assembly system. The elastic arm of the claw has a corresponding elastic force when inserted into the limiting groove, forming a pre-tightening force to prevent loosening and improve assembly efficiency.

[0039] An installation plate 6 is provided between the evaporator 1 and the gearbox 2. The evaporator 1 and the gearbox 2 are respectively fixedly connected to the installation plate 6. The installation plate 6 is provided with a clearance opening 7 at the connection and mating point between the evaporator 1 and the gearbox 2. The clearance opening 7 is correspondingly provided with a limiting fitting 3, and the clearance opening 7 and the limiting fitting 3 form a clearance fit. The limiting fitting 3 passes through the clearance opening 7 during the assembly of the evaporator 1, the gearbox 2 and the installation plate 6.

[0040] The mounting plate 6 is provided with a first assembly hole 8 for fixed connection with the gearbox 2.

[0041] The gearbox 2 is provided with a connecting part 15 coaxially arranged with the first mounting hole 8, and the connecting part 15 is fixedly connected to the first mounting hole 8.

[0042] The mounting plate 6 is provided with a second assembly hole 9 for fixed connection with the evaporator 1.

[0043] The mounting plate 6 is provided with a groove 12 that mates with the evaporator 1. The evaporator 1 is provided with a connecting lug 13 fixed on the mounting plate 6 and a mating part 14 on the positioning groove 12.

[0044] The limiting fitting 3 is provided on the end of the evaporator 1 and extends axially along the outer side of the evaporator 1. The gearbox 2 is provided with a limiting groove 5 that cooperates with the limiting fitting 3. The limiting groove 5 is in the form of an annular groove or a limiting hole.

[0045] In this embodiment, the evaporator includes an inner barrel 11 and an outer barrel 10. A gap is provided between the outer barrel 10 and the inner barrel 11 for the flow of heat exchange medium. A limiting fitting 3 is provided on the inner barrel 11, and the limiting fitting 3 and the inner barrel 11 are integrally formed.

[0046] In this embodiment, the inner tub 11 is provided with a sealing ring assembly 17 that is coaxially engaged with the ice skate screw 4. The sealing ring assembly 17 is installed on the support 18, and the support 18 is provided with a sealing ring 19 for forming a sealing fit between the inner tub 11 and the support 18.

[0047] In this embodiment, the inner barrel 11 is provided with a sealing cap 20 at the end. The sealing cap 20 is rotatably connected to the bearing 21 sleeved on the outside of the ice skate screw 4 and the bearing 12. The bearing 12 reduces vibration and friction, making the rotation of the ice skate screw 4 smoother.

[0048] In this embodiment, the sealing cover 20 is provided with an oil seal 22 to prevent leakage of the bearing 12, and the sealing cover 20 is provided with a connecting ear 13 that is fixed to the second mounting hole 9 of the mounting plate 6 by screws. The connecting ear 13 and the sealing cover 20 are integrally formed.

[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixing structure for the evaporator and gearbox of an ice maker, characterized in that: It includes a limiting fitting (3) provided at the connection and fit between the evaporator (1) and the gearbox (2). There are two or more limiting fittings (3), and the two or more limiting fittings (3) are arranged at intervals along the circumference at the connection and fit between the evaporator (1) and the gearbox (2). The evaporator (1) and the gearbox (2) are connected by two or more limiting fitting parts (3) to form an axial and / or circumferential limiting assembly to ensure the coaxial fit between the evaporator (1) and the gearbox (2).

2. The ice maker evaporator and gearbox fixing structure according to claim 1, characterized in that: The number of the limiting fitting parts (3) is two, and the evaporator (1) and the gearbox (2) are connected by two limiting fitting parts (3) to form a two-point line limiting assembly; The number of the limiting fitting parts (3) is three, and the evaporator (1) and the gearbox (2) are connected by the three limiting fitting parts (3) to form a three-point surface limiting assembly.

3. The ice maker evaporator and gearbox fixing structure according to claim 1, characterized in that: A limiting groove (5) is provided at the connection between the evaporator (1) and the gearbox (2). When the evaporator (1) and the gearbox (2) are assembled, two or more limiting fitting parts (3) are inserted into the limiting groove (5) for relative limiting. The limiting fitting parts (3) abut against the inner side of the limiting groove (5). The evaporator (1) and the gearbox (2) form an axial and / or circumferential limiting assembly through the cooperation of the limiting fitting parts (3) and the limiting groove (5).

4. The ice maker evaporator and gearbox fixing structure according to claim 2, characterized in that: The limiting fitting (3) has a claw-like structure. The upper part of the limiting groove (5) is open. The evaporator (1) is assembled with the gearbox (2). The limiting fitting (3) is inserted into the limiting groove (5) from the upper part of the limiting groove (5). Two or more limiting fittings (3) clamp the inner side of the limiting groove (5) relative to each other.

5. The ice maker evaporator and gearbox fixing structure according to claim 1, characterized in that: An installation plate (6) is provided between the evaporator (1) and the gearbox (2). The evaporator (1) and the gearbox (2) are respectively fixedly connected to the installation plate (6). The installation plate (6) is provided with a clearance opening (7) at the connection and fit between the evaporator (1) and the gearbox (2). The clearance opening (7) is correspondingly provided with a limiting fit (3). The clearance opening (7) and the limiting fit (3) form a clearance fit. The limiting fit (3) passes through the clearance opening (7) during the assembly of the evaporator (1), the gearbox (2) and the installation plate (6).

6. The ice maker evaporator and gearbox fixing structure according to claim 5, characterized in that: The mounting plate (6) is provided with a first mounting hole (8) for fixed connection with the gearbox (2).

7. The ice maker evaporator and gearbox fixing structure according to claim 6, characterized in that: The gearbox (2) is provided with a connecting part (15) coaxially arranged with the first mounting hole (8), and the connecting part (15) is fixedly connected to the first mounting hole (8).

8. The ice maker evaporator and gearbox fixing structure according to claim 5, characterized in that: The mounting plate (6) is provided with a second assembly hole (9) for fixed connection with the evaporator (1).

9. The ice maker evaporator and gearbox fixing structure according to claim 5, characterized in that: The mounting plate (6) is provided with a groove (12) that mates with the evaporator (1), and the evaporator (1) is provided with a connecting ear (13) fixed on the mounting plate (6) and a mating part (14) on the positioning groove (12).

10. The ice maker evaporator and gearbox fixing structure according to claim 1, characterized in that: The limiting fitting (3) is provided on the end of the evaporator (1), and the limiting fitting (3) extends axially along the outside of the evaporator (1). The gearbox (2) is provided with a limiting groove (5) that cooperates with the limiting fitting (3). The limiting groove (5) is in the form of an annular groove or a limiting hole. The evaporator (1) is equipped with an ice blade screw (4), and the gearbox (2) is equipped with an output shaft (2.1) that is connected to the ice blade screw (4). When the output shaft (2.1) of the gearbox (2) is connected to the ice blade screw (4), the output shaft (2.1) of the gearbox (2) and the ice blade screw (4) are located on the same axis with their axes opposite each other.

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