Ice drill driving mechanism of ice making machine

Abstract

The present invention discloses an ice auger driving mechanism of an ice maker, comprising an output inner shaft and an output outer shaft, wherein the output outer shaft is a hollow structure, the output inner shaft is inserted into the output outer shaft, the output inner shaft and the output outer shaft are located in a housing of a reducer, the lower end of the output inner shaft is sleeved with a thrust bearing; the lower end of the output outer shaft is sleeved with a first angular contact ball bearing, the output outer shaft is sleeved with a transmission gear, and the transmission gear is limited on the output outer shaft by a positioning key; the upper end of the output inner shaft abuts against the lower end of the ice auger, the upper end of the output outer shaft is provided with a spline groove, the outer wall of the lower end of the ice auger is provided with an external spline, and the external spline is inserted into the spline groove at the upper end of the output outer shaft. The present invention transmits the axial load and the radial load borne by the reducer driving mechanism separately, thereby improving the reliability of the reducer driving mechanism.

Description

Technical field:

[0002] The invention relates to the technical field of continuous ice making machines, and in particular to an ice drill driving mechanism of an ice making machine. Background technology:

[0004] The continuous ice maker is a continuous ice making device that makes and defrosts ice at the same time. It is small in size, occupies little space, and is easy to install. It does not require preparation and defrosting time during the entire ice making process, so it is very popular. The continuous ice maker consists of a compressor, a condenser, an evaporator, an ice making cylinder, an ice drill, and a storage bin. Its working principle is: when the refrigerant passes through the outer wall of the evaporator, it absorbs and takes away the heat of the water in the evaporator, and the water temperature gradually drops to the freezing point to form ice. The screw-type ice drill in the ice making cylinder rotates under the drive of the motor to transport the ice upward along with the ice drill. As the ice cubes are continuously squeezed out, a certain flow of cold drinking water controlled by the switch device at the bottom of the ice making cylinder is continuously added, and the continuous operation continuously makes water into ice.

[0005] At present, this type of continuous ice making machine generally drives the ice auger through a reducer, and the ice auger squeezes the ice cubes out of the cylinder of the ice making cylinder through the ice auger. The output shaft of the reducer structure is supported by an angular contact bearing, and the ice auger is fixed on the upper end of the output shaft. Disadvantages of this type of structure: In the prior art, two angular contact ball bearings are installed on the output shaft, so that the output shaft can withstand a certain axial force; during the operation of the equipment, the ice auger generates a spiral upward force through rotation, bringing the ice cubes out of the cylinder, and conversely, the ice auger also withstands a downward force. The ice auger is connected to the output shaft, and the output shaft is connected to the angular contact ball bearing. Finally, the axial force acts on the angular contact ball bearing; thus, the device is easily damaged, increasing the maintenance cost. In harsh environments such as winter, due to the rapid freezing of ice cubes, the angular contact ball bearing at the output shaft is subjected to a large axial force. During long-term operation of the equipment, there is a risk of the inner ring falling off, thereby damaging the reducer. Summary of the invention:

[0007] The purpose of the present invention is to solve the technical problem that when the ice auger of the existing ice maker brings ice cubes out of the cylinder, the axial force acts on the angular contact ball bearing used to support the output shaft of the reducer, thereby the device is easily damaged and the maintenance cost is increased, and an ice auger driving mechanism for the ice maker is provided.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An ice drill driving mechanism of an ice maker comprises an output inner shaft and an output outer shaft, wherein the output outer shaft is a hollow structure, the output inner shaft is inserted into the output outer shaft, the output inner shaft and the output outer shaft are located in a housing of a reducer, a first shaft shoulder is provided at the lower end of the output inner shaft, a thrust bearing is sleeved on the first shaft shoulder, and the lower end of the thrust bearing is embedded in a mounting groove at the bottom of the housing; a second shaft shoulder is provided at the lower end of the output outer shaft, a first angular contact ball bearing is sleeved on the second shaft shoulder, a keyway is provided in the middle of the output outer shaft, a positioning key is embedded in the keyway, The output outer shaft is sleeved with a transmission gear and the transmission gear is limited on the output outer shaft by a positioning key, and the transmission gear is used to mesh with the driving gear in the reducer; the upper part of the output outer shaft is sleeved with a second angular contact ball bearing, and the second angular contact ball bearing is located above the transmission gear, and the outer side of the second angular contact ball bearing is embedded in the mounting groove at the upper end of the outer shell; the upper end of the output inner shaft abuts against the lower end of the ice auger, and the upper end of the output outer shaft is provided with a spline groove, and the outer wall of the lower end of the ice auger is provided with an external spline, and the external spline is inserted in the spline groove at the upper end of the output outer shaft.

[0010] Furthermore, a limiting retaining spring is provided at the bottom of the second angular contact ball bearing, and the limiting retaining spring is sleeved on the output outer shaft to limit the second angular contact ball bearing on the output outer shaft.

[0011] Furthermore, a cylinder is sleeved on the outer side of the ice drill, and the lower end of the cylinder is fixedly connected to the upper end of the outer shell.

[0012] Furthermore, a plurality of spirally arranged ice blades are provided on the outer wall of the ice drill, and the plurality of ice blades are arranged at equal intervals.

[0013] Furthermore, a motor is fixedly mounted outside the housing, and the output shaft of the motor and the transmission gear are driven by multiple sets of gears.

[0014] An ice auger driving mechanism for an ice maker provided by the present invention has the following beneficial effects: this solution divides the output shaft into two parts, namely an output inner shaft and an output outer shaft, and adds a thrust bearing at the bottom of the output inner shaft; the output outer shaft is connected to the angular contact ball bearing and the ice auger, and is mainly used to transmit power and bear radial loads; the output inner shaft is abutted against the thrust bearing and the ice auger, and is mainly used to bear axial loads; this solution transmits the axial load and radial load borne by the reducer driving mechanism separately, thereby improving the reliability of the reducer driving mechanism. Description of the drawings:

[0016] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 A schematic structural diagram of an ice auger driving mechanism of an ice making machine provided by the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the local structure of part A in the middle;

[0019] Figure 3 A schematic diagram of an explosion structure of an ice drill driving mechanism of an ice maker provided by the present invention with its outer shell removed;

[0020] Figure 4 A schematic structural diagram of an ice auger driving mechanism and a motor installation state of an ice maker provided by the present invention.

[0021] Explanation of the numbers in the figure: 1-output inner shaft, 2-output outer shaft, 21-keyway, 22-locating key, 23-spline groove, 3-housing, 4-thrust bearing, 5-first angular contact ball bearing, 6-transmission gear, 7-second angular contact ball bearing, 71-limiting retaining spring, 8-ice drill, 81-external spline, 82-ice blade, 9-cylinder, 10-motor. Specific implementation method:

[0023] 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.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, an ice drill driving mechanism of an ice maker comprises an output inner shaft 1 and an output outer shaft 2, wherein the output outer shaft 2 is a hollow structure, wherein the output inner shaft 1 is inserted into the output outer shaft 2, wherein the output inner shaft 1 and the output outer shaft 2 are located in a housing 3 of a reducer, wherein a first shaft shoulder is provided at the lower end of the output inner shaft 1, wherein a thrust bearing 4 is sleeved on the first shaft shoulder, wherein the lower end of the thrust bearing 4 is embedded in a mounting groove at the bottom of the housing 3; wherein a second shaft shoulder is provided at the lower end of the output outer shaft 2, wherein a first angular contact ball bearing 5 is sleeved on the second shaft shoulder, wherein a keyway 21 is provided in the middle of the output outer shaft 2, wherein a positioning key 22 is embedded in the keyway 21, wherein the ... The output outer shaft 2 is sleeved with a transmission gear 6 and the transmission gear 6 is limited on the output outer shaft 2 by a positioning key 22. The transmission gear 6 is used to mesh with the driving gear in the reducer; the upper part of the output outer shaft 2 is sleeved with a second angular contact ball bearing 7, and the second angular contact ball bearing 7 is located above the transmission gear 6. The outer side of the second angular contact ball bearing 7 is embedded in the mounting groove at the upper end of the outer shell 3; the upper end of the output inner shaft 1 abuts against the lower end of the ice drill 8, and the upper end of the output outer shaft 2 is provided with a spline groove 23, and the outer wall of the lower end of the ice drill 8 is provided with an external spline 81, and the external spline 81 is inserted in the spline groove 23 at the upper end of the output outer shaft 2.

[0027] Specifically, a limiting retaining spring 71 is provided at the bottom of the second angular contact ball bearing 7 , and the limiting retaining spring 71 is clamped on the output outer shaft 2 to limit the second angular contact ball bearing 7 on the output outer shaft 2 .

[0028] Specifically, a cylinder 9 is sleeved on the outer side of the ice drill 8 , and the lower end of the cylinder 9 is fixedly connected to the upper end of the outer shell 3 .

[0029] Specifically, a plurality of spirally arranged ice blades 82 are provided on the outer wall of the ice drill 8, and the plurality of ice blades 82 are arranged at equal intervals.

[0030] Further, such as Figure 4 As shown, a motor 10 is fixedly mounted outside the housing 3, and the output shaft of the motor 10 is transmission-connected with the transmission gear 6 via a plurality of gear sets.

[0031] By adopting the above technical scheme, the output shaft is divided into two parts, namely the output inner shaft 1 and the output outer shaft 2, and a thrust bearing 4 is added at the bottom of the output inner shaft 1; the output outer shaft 2 is connected with the angular contact ball bearing and the ice drill 8, mainly used to transmit power and bear radial loads; the output inner shaft 1 is abutted with the thrust bearing 4 and the ice drill 8, mainly used to bear axial loads; this scheme transmits the axial load and radial load borne by the reducer drive mechanism separately, thereby improving the reliability of the reducer drive mechanism.

[0032] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ice drill driving mechanism for an ice making machine, Features: The invention comprises an output inner shaft (1) and an output outer shaft (2), wherein the output outer shaft (2) is a hollow structure, the output inner shaft (1) is inserted into the output outer shaft (2), the output inner shaft (1) and the output outer shaft (2) are located in a housing (3) of a reducer, the lower end of the output inner shaft (1) is provided with a first shaft shoulder, a thrust bearing (4) is sleeved on the first shaft shoulder, and the lower end of the thrust bearing (4) is embedded in a mounting groove at the bottom of the housing (3); the lower end of the output outer shaft (2) is provided with a second shaft shoulder, a first angular contact ball bearing (5) is sleeved on the second shaft shoulder, a keyway (21) is provided in the middle of the output outer shaft (2), a positioning key (22) is embedded in the keyway (21), and the output outer shaft (2) is sleeved on the outside. There is a transmission gear (6) and the transmission gear (6) is limited on the output outer shaft (2) by a positioning key (22), and the transmission gear (6) is used to mesh with the driving gear in the reducer; the upper part of the output outer shaft (2) is sleeved with a second angular contact ball bearing (7), the second angular contact ball bearing (7) is located above the transmission gear (6), and the outer side of the second angular contact ball bearing (7) is embedded in the mounting groove at the upper end of the outer shell (3); the upper end of the output inner shaft (1) is in contact with the lower end of the ice drill (8), the upper end of the output outer shaft (2) is provided with a spline groove (23), and the outer wall of the lower end of the ice drill (8) is provided with an external spline (81), and the external spline (81) is inserted in the spline groove (23) at the upper end of the output outer shaft (2); A limiting retaining spring (71) is provided at the bottom of the second angular contact ball bearing (7), and the limiting retaining spring (71) is sleeved on the output outer shaft (2) and limits the second angular contact ball bearing (7) on the output outer shaft (2); A plurality of spirally arranged ice blades (82) are provided on the outer wall of the ice drill (8), and the plurality of ice blades (82) are arranged at equal intervals.

2. The ice auger driving mechanism of an ice making machine according to claim 1, Features: A cylinder (9) is sleeved on the outer side of the ice drill (8), and the lower end of the cylinder (9) is fixedly connected to the upper end of the outer shell (3).

3. The ice auger driving mechanism of an ice making machine according to claim 1, Features: A motor (10) is fixedly mounted outside the housing (3), and an output shaft of the motor (10) is transmission-connected to a transmission gear (6) via a plurality of gear sets.

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