An ultrasonic defrosting device for cold storage evaporator

Abstract

The utility model relates to the technical field of evaporator defrosting, and discloses an ultrasonic defrosting device for cold storage evaporators, including an evaporator body, a fixing plate is installed on the top of the evaporator body, a conveying pipe is fixedly installed in the inner cavity of the evaporator body, fins are installed in the inner cavity of the evaporator body, and a wind tube is fixedly installed on the outer wall of the evaporator body. The ultrasonic defrosting device for cold storage evaporators emits ultrasonic waves of a certain frequency to the outer wall of the fin under the action of the ultrasonic wave transmitter, through a rotating plate and a mounting plate arranged on the outer wall of the evaporator body, and a sound wave transmitter installed on the outer wall of the mounting plate, so that the ultrasonic wave acts on the outer wall of the fin, thereby causing the frost layer on the outer wall of the fin to vibrate, and then causing the frost layer to fall under the high-frequency vibration, thereby achieving the removal of the frost layer, avoiding manual defrosting, and being more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporator defrosting, in particular to an ultrasonic defrosting device for a cold storage evaporator. Background Art

[0002] Evaporation is the physical process of converting liquid into gas. Generally speaking, an evaporator is an object that converts liquid substances into gas. There are a large number of evaporators in the industry, of which the evaporator used in refrigeration systems is one of them. The evaporator is a very important component among the four major refrigeration components. The low-temperature condensed liquid passes through the evaporator to exchange heat with the outside air, vaporizes and absorbs heat to achieve the refrigeration effect.

[0003] When using traditional evaporator equipment, due to the low temperature of the evaporator surface, when the humidity in the cold storage is high, a layer of frost will condense on the outer wall of the evaporator. The frost will affect the refrigeration effect of the evaporator, and the frost on the outer wall of the evaporator needs to be manually removed. However, due to the small gap between the fins, it is relatively laborious to remove the frost without damaging the fins, and the defrosting effect is not good. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an ultrasonic defrosting device for a cold storage evaporator, which has the advantages of being easy to use and having a good defrosting effect, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: an ultrasonic defrosting device for a cold storage evaporator, comprising an evaporator body, a fixing plate installed on the top of the evaporator body, a conveying pipe fixedly installed in the inner cavity of the evaporator body, fins installed in the inner cavity of the evaporator body, a wind tube fixedly installed on the outer wall of the evaporator body, a blower fan fixedly installed on the inner wall of the wind tube, a filter plate fixedly installed on the outer edge of the wind tube, a fixing rod fixedly installed on the outer wall of the evaporator body, a driving motor fixedly installed on the outer wall of the fixing rod, a driving gear fixedly installed on the power output shaft of the driving motor, a rotating plate rotatably connected to the outer wall of the fixing rod, a tooth groove is opened on the outer wall of the rotating plate, a mounting plate fixedly installed on the outer wall of the rotating plate, and a sound wave emitter fixedly installed on the outer wall of the mounting plate.

[0006] As a preferred technical solution of the utility model: there are two blower fans, and the two blower fans are respectively installed on the outer wall of the evaporator body.

[0007] As a preferred technical solution of the utility model: the outer wall of the driving gear and the inner wall of the tooth groove are meshed with each other, and the fixing rod is a high-torque low-speed motor.

[0008] As a preferred technical solution of the utility model: the rotating plate and the mounting plate are both made of stainless steel, and fixing rods are installed on the top and bottom of the evaporator body.

[0009] As a preferred technical solution of the utility model: a signal receiver and a controller are installed on the top of the evaporator body, and the controller and the signal receiver are electrically connected to the driving motor and the sound wave transmitter respectively.

[0010] As a preferred technical solution of the utility model: the angle of the rotating plate rotating outward is α, and 0°≤α≤°45.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The ultrasonic defrosting device for the cold storage evaporator, through a rotating plate and a mounting plate arranged on the outer wall of the evaporator body, and a sound wave transmitter installed on the outer wall of the mounting plate, emits ultrasonic waves of a certain frequency to the outer wall of the fin under the action of the sound wave transmitter, so that the ultrasonic wave acts on the outer wall of the fin, thereby causing the frost layer on the outer wall of the fin to vibrate, and then the frost layer falls under the high-frequency vibration, thereby realizing the removal of the frost layer, avoiding manual defrosting, and being more convenient.

[0013] 2. The ultrasonic defrosting device for the cold storage evaporator has teeth grooves opened on the outer wall of the rotating plate, and the outer wall of the driving gear is meshed with the outer wall of the rotating plate, so that the rotating plate can be driven under the action of the driving gear, so that the rotating plate can rotate outward, and at this time, the sound waves emitted by the sound wave transmitter can be more comprehensively transmitted to the outer wall of the fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the evaporator body of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the wind tube of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the rotating plate of the utility model;

[0018] Figure 5 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. evaporator body; 2. fixing plate; 3. conveying pipe; 4. fins; 5. air cylinder; 6. blower fan; 7. fixing rod; 8. driving motor; 9. driving gear; 10. rotating plate; 11. tooth groove; 12. mounting plate; 13. sound wave transmitter; 14. filter plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 An ultrasonic defrosting device for a cold storage evaporator comprises an evaporator body 1, a fixing plate 2 is installed on the top of the evaporator body 1, a conveying pipe 3 is fixedly installed in the inner cavity of the evaporator body 1, a fin 4 is installed in the inner cavity of the evaporator body 1, a wind tube 5 is fixedly installed on the outer wall of the evaporator body 1, a blower fan 6 is fixedly installed on the inner wall of the wind tube 5, a filter plate 14 is fixedly installed on the outer edge of the wind tube 5, a fixing rod 7 is fixedly installed on the outer wall of the evaporator body 1, a driving motor 8 is fixedly installed on the outer wall of the fixing rod 7, a driving gear 9 is fixedly installed on the power output shaft of the driving motor 8, a rotating plate 10 is rotatably connected to the outer wall of the fixing rod 7, a tooth groove 11 is opened on the outer wall of the rotating plate 10, a mounting plate 12 is fixedly installed on the outer wall of the rotating plate 10, and a sound wave emitter 13 is fixedly installed on the outer wall of the mounting plate 12.

[0022] By setting the sound wave transmitter 13 on the outer wall of the mounting plate 12, during the use of the equipment, a lot of frost will adhere to the outer wall of the fin 4. At this time, ultrasonic waves will be released to the outer wall of the fin 4 under the action of the sound wave transmitter 13, and the frost attached to the outer wall of the fin 4 will be shaken off under the action of the ultrasonic wave.

[0023] In a preferred embodiment, there are two blower fans 6 , and the two blower fans 6 are respectively installed on the outer wall of the evaporator body 1 .

[0024] By installing two blowers 6 on the outer wall of the evaporator body 1, when the equipment is operating normally, the low-temperature and low-pressure gas in the inner cavity of the delivery pipe 3 will release low temperature to the outside. At this time, the low-temperature gas is blown out by the blower 6, so that the temperature in the cold storage continues to decrease.

[0025] In a preferred embodiment, the outer wall of the driving gear 9 and the inner wall of the tooth groove 11 are meshed with each other, and the fixing rod 7 is a high-torque low-speed motor.

[0026] By meshing the outer wall of the driving gear 9 with the inner wall of the tooth groove 11, when the driving motor 8 rotates, it can drive the rotation of the rotating plate 10, so that the rotating plate 10 is offset in the left and right directions, thereby achieving the position adjustment of the mounting plate 12, so that the shock wave emitted by the sound wave transmitter 13 installed on the outer wall of the mounting plate 12 can be better transmitted to the outer wall of the fin 4.

[0027] In a preferred embodiment, the rotating plate 10 and the mounting plate 12 are both made of stainless steel, and fixing rods 7 are installed on the top and the bottom of the evaporator body 1 .

[0028] The rotating plate 10 and the mounting plate 12 made of stainless steel can have sufficient strength during the use of the rotating plate 10 and the mounting plate 12, and fixing rods 7 are installed on the top and bottom of the evaporator body 1. The upper and lower fixing rods 7 simultaneously support and limit the rotating plate 10, so that the rotating plate 10 can rotate more stably along the outer wall of the fixing rods 7.

[0029] In a preferred embodiment, a signal receiver and a controller are installed on the top of the evaporator body 1 , and the controller and the signal receiver are electrically connected to the drive motor 8 and the sound wave transmitter 13 respectively.

[0030] By setting a signal receiver and a controller on the top of the evaporator body 1, when the angle of the rotating plate 10 needs to be adjusted, it is only necessary to remotely send a signal to the signal receiver, and the start of the drive motor 8 can be remotely controlled under the action of the signal receiver and the controller.

[0031] In a preferred embodiment, the angle of the rotating plate 10 rotating outward is α, and 0°≤α≤45°.

[0032] By means of a driving motor 8 arranged on the outer wall of the evaporator body 1, the rotating plate 10 is rotated outwardly under the action of the driving motor 8. During the process of the rotating plate 10 rotating outwardly, the direction of the outer wall of the sound wave emitter 13 will also be deflected, so that the ultrasonic wave emitted by the sound wave emitter 13 is more evenly transmitted to the outer wall of the fin 4.

[0033] Working principle: During the use of the above-mentioned equipment, the evaporator body 1 is installed as a whole on the top of the cold storage through the fixing plate 2, and then the equipment can be used normally. When the equipment needs to be used to defrost the outer wall of the fin 4, the controller is used to start the sound wave transmitter 13 according to the situation of the evaporator body 1 during use. Under the action of the sound wave transmitter 13, ultrasonic waves are emitted. At this time, ultrasonic waves will produce reflections at the interface between the frost and the surface of the fin 4. Since the fin 4 absorbs very little sound waves, the energy of the ultrasonic wave will be mainly reflected back into the frost layer. When the ultrasonic vibration frequency is higher than 20kHz, the ultrasonic wave and the vibration frequency of the frost layer coincide. The resonance will cause the frost layer to expand and contract tens of thousands of times per second. Although the internal stress in the frost layer does not reach the critical value for destroying the ice and snow layer, it can accumulate enough times in a short period of time to fatigue and destroy the frost layer, which is beneficial to the breaking and peeling of the frost. The angle of the mounting plate 12 is adjusted according to the vibration and falling of the frost. The drive motor 8 is started by the controller. At this time, the drive motor 8 drives the drive gear 9 to rotate. During the rotation of the drive gear 9, the ultrasonic wave generated by the sound wave transmitter 13 can more comprehensively remove the frost layer attached to the outer wall of the fin 4, thereby obtaining a better defrosting effect.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic defrosting device for a cold storage evaporator, comprising an evaporator body (1), characterized in that: A fixing plate (2) is installed on the top of the evaporator body (1); a conveying pipe (3) is fixedly installed in the inner cavity of the evaporator body (1); a fin (4) is installed in the inner cavity of the evaporator body (1); a wind tube (5) is fixedly installed on the outer wall of the evaporator body (1); a blower fan (6) is fixedly installed on the inner wall of the wind tube (5); a filter plate (14) is fixedly installed on the outer edge of the wind tube (5); a fixing rod (7) is fixedly installed on the outer wall of the evaporator body (1); a driving motor (8) is fixedly installed on the outer wall of the fixing rod (7); a driving gear (9) is fixedly installed on the power output shaft of the driving motor (8); a rotating plate (10) is rotatably connected to the outer wall of the fixing rod (7); a tooth groove (11) is provided on the outer wall of the rotating plate (10); a mounting plate (12) is fixedly installed on the outer wall of the mounting plate (12); and a sound wave transmitter (13) is fixedly installed on the outer wall of the mounting plate (12).

2. The ultrasonic defrosting device for cold storage evaporator according to claim 1 is characterized in that: There are two blower fans (6), and the two blower fans (6) are respectively installed on the outer wall of the evaporator body (1).

3. The ultrasonic defrosting device for cold storage evaporator according to claim 1 is characterized in that: The outer wall of the driving gear (9) and the inner wall of the tooth groove (11) are meshed with each other, and the fixing rod (7) is a high-torque low-speed motor.

4. The ultrasonic defrosting device for cold storage evaporator according to claim 1 is characterized in that: The rotating plate (10) and the mounting plate (12) are both made of stainless steel, and fixing rods (7) are installed at the top and bottom of the evaporator body (1).

5. The ultrasonic defrosting device for cold storage evaporator according to claim 1 is characterized in that: A signal receiver and a controller are installed on the top of the evaporator body (1), and the controller and the signal receiver are electrically connected to the drive motor (8) and the sound wave transmitter (13) respectively.

6. The ultrasonic defrosting device for cold storage evaporator according to claim 1 is characterized in that: The angle of the rotating plate (10) rotating outward is α, and 0°≤α≤45°.

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