Motor rotating speed adjusting structure of ice cream machine

Abstract

The utility model discloses a motor rotating speed adjusting structure of an ice cream machine, which belongs to the technical field of ice cream machines and comprises a compressor, an evaporator, a stirrer, a motor, a control panel and a display panel. The control panel is in electric control connection with the compressor, the motor and the display panel, an adjustable direct-current voltage circuit is arranged on the control panel, different voltage signals are output through the adjustable direct-current voltage circuit, and the motor is controlled to output different rotating speeds through the different voltage signals. According to the structure, the motor can at least rotate at a high speed and a low speed, so that the stirrer can stir ice cream at least at a high rotating speed and a low rotating speed, the stirring speed of the ice cream can be increased by the stirrer rotating at a high speed, the discharging speed of the ice cream can be reduced by the stirrer rotating at a low speed, and the use experience of a user is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of ice cream machine technology, specifically to a motor speed adjustment structure for an ice cream machine. Background Technology

[0002] Existing ice cream machines typically consist of a mixing bowl, an evaporating cylinder, a dispensing assembly, a main refrigeration system, and a control system. The evaporating cylinder is equipped with a stirrer. The general workflow of an ice cream machine is as follows: the main refrigeration system and stirrer are controlled by the control system. The ice cream mixture enters the evaporating cylinder from the mixing bowl. Inside the evaporating cylinder, the ice cream mixture is stirred and heat exchanged, gradually cooling and solidifying until it reaches the desired ice cream consistency set by the system. Furthermore, the ice cream forming process can be broadly divided into three stages: a liquid stage, a solid-liquid mixed stage, and a solid stage.

[0003] When the motor driving the mixer operates at its rated voltage and rated frequency (speed), the viscosity of the ice cream varies in the evaporation cylinder at different stages of the molding process. The resistance experienced by the mixer during mixing also changes with the viscosity of the ice cream. As the motor load increases, the motor speed naturally decreases based on its own motor design characteristics.

[0004] In other words, the motor speed of ice cream machines on the market is fixed. The speed and torque of the motor drive the agitator to stir the ice cream. As a result, the speed of ice cream stirring is not adjustable. As the ice cream becomes harder and harder under the cooling of the evaporation tank, the stirring speed will become slower and slower, and may even become clogged. This will seriously affect the uniformity of the ice cream stirring, affect the taste of the ice cream, and also cause the ice cream to be dispensed slowly or even not at all, affecting the user experience.

[0005] Therefore, further improvements are necessary. Utility Model Content

[0006] The present invention aims to provide a motor speed adjustment structure for an ice cream machine to overcome the shortcomings of the prior art.

[0007] An ice cream machine motor speed adjustment structure designed for this purpose includes a compressor, an evaporator, a stirrer, and a motor. The compressor is connected to the evaporator, and the stirrer rotates on the evaporator driven by the motor. The ice cream machine also includes a control board and a display board. The control board is electrically connected to the compressor, the motor, and the display board. The control board is equipped with an adjustable DC voltage circuit, and outputs different voltage signals through the adjustable DC voltage circuit, thereby controlling the motor to output different speeds through different voltage signals.

[0008] The control board is equipped with at least two voltage levels for user use, and the motor can rotate at high or low speeds by selecting the voltage level through the control board.

[0009] The control board is set with voltages of 10V-15V and 15V-24V respectively.

[0010] The adjustable DC voltage circuit includes a switching transistor that switches the input voltage to a high-frequency pulse signal, an input filter, a rectifier and filter that outputs a stable DC voltage, a pulse transformer that converts the operating voltage, a power driver chip that is connected to the switching transistor, and a PWM debugging optocoupler feedback loop.

[0011] The control board consists of a processor, touch buttons, and a rotary encoder. The display board consists of a display driver chip, a digital tube, and LED beads. The processor is electrically connected to the touch buttons and the rotary encoder to enable the function selection of the ice cream machine. The processor is also electrically connected to the display driver chip to enable the display of the digital tube and LED beads.

[0012] The control board is equipped with a motor drive control circuit and is connected to the motor control system through the motor drive control circuit. The motor drive control circuit consists of a switching MOSFET and a current sampling resistor, and is equipped with an R7 sampling resistor for sampling the motor current.

[0013] The control board is equipped with a 5V voltage regulator circuit, which consists of a 5V voltage regulator module and a filter capacitor.

[0014] The control board is equipped with a temperature sampling circuit, which consists of a 100K pull-up resistor and an NTC temperature sensor forming a voltage divider circuit, and outputs a temperature analog electrical signal to the control board.

[0015] The evaporator and / or the motor are also equipped with a heat dissipation device, and the control board is electrically connected to the heat dissipation device.

[0016] This invention features an adjustable DC voltage circuit on the control board. By controlling the output of different voltage signals from the adjustable DC voltage circuit, the control board controls the motor to output different speeds based on the different voltage signals. This allows the motor to rotate at least fast and slow speeds, enabling the mixer to churn the ice cream at at least two different speeds.

[0017] In actual use, the fast-rotating mixer can speed up the mixing of ice cream, which not only reduces cooling blockage but also improves the uniformity and texture of the ice cream. The slow-rotating mixer can slow down the dispensing speed of the ice cream, ensuring a stable dispensing speed and reducing the problem of ice cream falling off due to excessive dispensing speed, thus greatly improving the user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the connection between the control board and the display board according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of a motor drive control circuit according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of a 5V voltage regulator circuit according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of a temperature sampling circuit according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of an adjustable DC voltage circuit according to an embodiment of the present invention. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See Figures 1-5 The motor speed adjustment structure of this ice cream machine includes a compressor 1, an evaporator, a stirrer, and a motor 2. The compressor 1 is connected to the evaporator, and the stirrer rotates on the evaporator driven by the motor 2. The ice cream machine also includes a control board 3 and a display board 4. The control board 3 is electrically connected to the compressor 1, the motor 2, and the display board 4 respectively. The control board 3 is equipped with an adjustable DC voltage circuit, and outputs different voltage signals through the adjustable DC voltage circuit, and controls the motor 2 to output different speeds through different voltage signals.

[0026] In this embodiment, an adjustable DC voltage circuit is provided on the control board 3, and different voltage signals are output by the control circuit. The control board 3 then controls the motor 2 to output different speeds according to the different voltage signals, so that the motor 2 can rotate at least fast and slow speeds, so that the stirrer can stir the ice cream at at least two different speeds.

[0027] In actual use, the fast-rotating mixer can speed up the mixing of ice cream, which not only reduces cooling blockage but also improves the uniformity and texture of the ice cream. The slow-rotating mixer can slow down the dispensing speed of the ice cream, ensuring a stable dispensing speed and reducing the problem of ice cream falling off due to excessive dispensing speed, thus greatly improving the user experience.

[0028] The control board 3 is equipped with at least two voltages, large and small, for users to use. The motor 2 can rotate quickly or slowly by selecting the voltage through the control board 3.

[0029] That is, when the ice cream is being mixed, the user selects a high voltage through the control board 3, and the motor 2 rotates quickly, so that the stirrer can quickly stir the ice cream; when the ice cream is being dispensed, the user selects a low voltage through the control board 3, and the motor 2 rotates slowly, so that the stirrer can slowly stir the ice cream and slowly dispense the ice cream.

[0030] The voltage settings on control board 3 are 10V-15V and 15V-24V, respectively.

[0031] In this embodiment, the high voltage is 10V, and the low voltage is 15V or 24V.

[0032] The adjustable DC voltage circuit includes a switching transistor that switches the input voltage to a high-frequency pulse signal, an input filter, a rectifier and filter for a stable output DC voltage, a pulse transformer 6 that converts the operating voltage, a power driver chip connected to the switching transistor, and a PWM debugging optocoupler feedback loop 7.

[0033] In this embodiment, the working principle of the adjustable DC voltage circuit is as follows: the input voltage is switched to a high-frequency pulse signal by the switching action of the switching transistor, and then converted to the required voltage level by the pulse transformer 6. Finally, a stable DC voltage is output after rectification and filtering. The output DC voltage is then controlled by the PWM debugging optocoupler feedback loop 7 to control the power driver chip of the switching transistor, and automatically adjust the output DC voltage, i.e., 10V, 15V or 24V, so as to achieve the speed regulation effect of motor 2, that is, to achieve the purpose of speed regulation by changing the working voltage of motor 2.

[0034] The control board 3 consists of a processor, touch buttons, and a rotary encoder. The display board 4 consists of a display driver chip, a digital tube, and LED beads. The processor is electrically connected to the touch buttons and the rotary encoder to realize the function selection of the ice cream machine. The processor is also electrically connected to the display driver chip to realize the display of the digital tube and LED beads.

[0035] In this embodiment, the working principle of the control board 3 and the display board 4 is as follows: the processor loads the logic control program for the entire ice cream machine system, the touch buttons can select the functions of smoothie, ice cream, snow melt water, milkshake, and extrusion cleaning, the rotary encoder can adjust the gear of different function menus, long press the rotary encoder to turn off the machine, short press the rotary encoder to turn on the machine, the processor communicates with the display driver chip to realize the digital tube and LED display, and the user can select the voltage through the combination of touch buttons and rotary encoder.

[0036] The control board 3 is equipped with a motor drive control circuit and is electrically connected to the motor 2 through the motor drive control circuit. The motor drive control circuit consists of a switching MOSFET and a current sampling resistor, and is equipped with an R7 sampling resistor for sampling the current of the motor 2.

[0037] In this embodiment, the working principle of the motor drive control circuit is as follows: when the MOS control terminal signal is high, the motor 2 is powered on and works; when the MOS control terminal signal is low, the motor 2 is powered off and stops working; the sampling resistor R7 is responsible for sampling the current of the motor 2, which is then processed by the processor to realize the stall protection of the motor 2.

[0038] The control board 3 is equipped with a 5V voltage regulator circuit, which consists of a 5V voltage regulator module and a filter capacitor.

[0039] In this embodiment, the working principle of the 5V voltage regulator circuit is: by comparing the output voltage and the reference voltage and adjusting the output current, the output voltage is kept stable, thereby achieving the effect of 5V voltage regulation.

[0040] The control board 3 is equipped with a temperature sampling circuit, which consists of a 100K pull-up resistor and an NTC temperature sensor forming a voltage divider circuit, and outputs a temperature analog electrical signal to the control board 3.

[0041] In this embodiment, the working principle of the temperature sampling circuit is as follows: the temperature is measured using an NTC temperature sensor, then the temperature signal is converted into an electrical signal, then the electrical signal is amplified to a range that can be read by the processor using a voltage divider circuit, and a filter is used to reduce noise interference. Finally, the temperature value is calculated by the processor, thereby detecting the temperature of the ice cream during stirring.

[0042] The evaporator and / or motor 2 are also equipped with a heat dissipation device 5, and the control board 3 is electrically connected to the heat dissipation device 5.

[0043] In this embodiment, the heat dissipation device 5 dissipates heat from the evaporator and / or the motor 2 under the control of the control board 3.

[0044] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A motor speed adjustment structure for an ice cream machine, comprising a compressor (1), an evaporator, a stirrer, and a motor (2), wherein the compressor (1) is connected to the evaporator, and the stirrer rotates on the evaporator under the drive of the motor (2), characterized in that: The ice cream machine further comprises a control panel (3) and a display panel (4), the control panel (3) is electrically connected with the compressor (1), the motor (2) and the display panel (4) respectively, an adjustable direct current voltage circuit is arranged on the control panel (3), different voltage signals are outputted through the adjustable direct current voltage circuit, and the motor (2) outputs different rotating speeds through the different voltage signals.

2. The ice cream machine motor speed adjustment structure of claim 1, wherein: At least two sizes of voltage for users are arranged on the control panel (3), and the motor (2) rotates fast or slow through the selection of the sizes of voltage by the control panel (3).

3. The ice cream machine motor speed adjustment structure of claim 2, wherein: The sizes of voltage arranged on the control panel (3) are 10V-15V and 15V-24V respectively.

4. The ice cream machine motor speed adjustment structure of claim 1, wherein: The adjustable direct current voltage circuit comprises a switching tube for switching input voltage into high-frequency pulse signals, an input filter, a rectification and filter for outputting stable direct current voltage, a pulse transformer (6) for converting working voltage, a power supply driving chip drivenly connected with the switching tube, and a PWM debugging optocoupler feedback loop (7).

5. The ice cream machine motor speed adjustment structure of claim 1, wherein: The control panel (3) is composed of a processor, touch keys and a knob encoder, the display panel (4) is composed of a display driving chip, a digital tube and LED lamp beads, the processor is electrically connected with the touch keys and the knob encoder, and realizes function selection of the ice cream machine, and the processor is electrically connected with the display driving chip, and realizes display of the digital tube and the LED lamp beads.

6. The ice cream machine motor speed adjustment structure of claim 1, wherein: A motor driving control circuit is arranged on the control panel (3), and the motor driving control circuit is electrically connected with the motor (2), the motor driving control circuit is composed of a switching MOS tube and a current sampling resistor, and an R7 sampling resistor for current sampling of the motor (2) is arranged on the motor driving control circuit.

7. The ice cream machine motor speed adjustment structure of claim 1, wherein: A 5V voltage stabilizing circuit is arranged on the control panel (3), the 5V voltage stabilizing circuit is composed of a 5V voltage stabilizing module and a filter capacitor.

8. The ice cream machine motor speed adjustment structure of claim 1, wherein: A temperature sampling circuit is arranged on the control panel (3), the temperature sampling circuit is composed of a 100K pull-up resistor and an NTC temperature sensor, and outputs a temperature analog electric signal to the control panel (3).

9. The ice cream machine motor speed adjustment structure of claim 1, wherein: A heat dissipation device (5) is further arranged on the evaporator and / or the motor (2), and the control panel (3) is electrically connected with the heat dissipation device (5).

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