Ice-blockage-preventing efficient freezing dryer

Abstract

The utility model discloses an anti-ice-blockage high-efficiency freezing dryer which comprises a heat exchanger, a heat exchange area is arranged in the heat exchanger, and an air channel opening is formed in the heat exchange area. The air channel port is connected with an input port of the frequency conversion compressor through a first pipeline and connected with an output port of the frequency conversion compressor and the condensation assembly through a second pipeline, and the temperature detection module is arranged in the heat exchange area of the heat exchanger, so that the temperature of the heat exchange area is monitored in real time. When the temperature detection module judges that the temperature of the heat exchange area is reduced to 0 DEG C or below (namely, the temperature is too low, and the freezing risk exists), the control module can automatically start an adjusting mechanism. Warm gas and condensate are mixed and then input into the heat exchange area, the temperature of the heat exchange area is increased, the temperature is prevented from being too low, and the icing phenomenon is avoided. And it is ensured that the temperature of the heat exchange area is kept within a reasonable range, ice blockage is avoided, an accurate adjusting mechanism is formed, icing is prevented, and the ice blockage phenomenon can be rapidly treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ice block prevention's high-efficiency refrigerators, belong to refrigerator technical field. BACKGROUND

[0002] Refrigerator is a kind of equipment used in compressed air system, mainly used to remove moisture in air. Compressed air will generate a lot of heat during compression, while the moisture in the air will also be compressed into air, forming moisture or water vapor. The refrigerator removes moisture by condensing water vapor in the air into water droplets, ensuring that the gas is not affected by moisture during subsequent processing. Common refrigerators include refrigeration type refrigerators and adsorption type refrigerators.

[0003] Mainly use the working principle of heat exchanger and compressor, by reducing air temperature to dew point, make water vapor condense into moisture, then discharge moisture through drainage device. The working principle of refrigerator depends on the cooling of compressed air and the condensation of moisture, so as to effectively remove moisture in air and ensure that the equipment and tools in compressed air system are not affected by humidity.

[0004] During the operation of the refrigerator, the heat exchange zone of the refrigerator needs to condense water vapor in the air into water droplets by cooling. However, when the temperature of the heat exchange zone is too low (especially below 0℃), it will cause the condensate to freeze, and then form ice block phenomenon. This freezing will affect the flow of air, especially the output port of the air input into the compressor. Once ice block occurs seriously, it may even cause the equipment to malfunction, resulting in shutdown or system failure.

[0005] Therefore, the purpose of this research is to design an ice block prevention high-efficiency refrigerator that can prevent freezing and ice block phenomenon through precise adjustment mechanism and can be quickly handled. INVENTION CONTENTS

[0006] In view of the shortcomings of the prior art, the utility model aims to provide an ice block prevention high-efficiency refrigerator to solve the problems of the prior art.

[0007] In order to achieve the above purpose, the utility model is realized by the following technical scheme:

[0008] An ice block prevention high-efficiency refrigerator, comprising: a heat exchanger, the heat exchanger is internally provided with a heat exchange zone, and the heat exchange zone is provided with an air passage opening;

[0009] The air passage opening is connected with the input port of the frequency conversion compressor through a first pipeline, and the output port of the frequency conversion compressor and the condensing assembly are connected through a second pipeline, the input port of the heat exchange zone is connected with the condensing assembly through a third pipeline, and a fourth pipeline is connected with the input port of the heat exchange zone through the third pipeline.

[0010] A first control valve is arranged on the third pipeline, and a second control valve is arranged on the fourth pipeline, the communication state of the third pipeline and the fourth pipeline is controlled through the second control valve, and a temperature detection module is arranged in the heat exchange area;

[0011] A control module is electrically connected with the variable frequency compressor, the condensing assembly, the first control valve and the second control valve;

[0012] When the temperature detection module judges that the temperature of the heat exchange area is less than 0°, the second control valve is opened through the control module, and the opening range of the first control valve is reduced, so that the gas not cooled by the variable frequency compressor is combined with the condensate in the third pipeline and the fourth pipeline, and is input into the heat exchange area, so as to improve the temperature of the heat exchange area.

[0013] As a further improvement, an anti-icing assembly is arranged at the airway opening, and the anti-icing assembly comprises:

[0014] A set of separation nets are laterally movably arranged in the heat exchanger, and a driving assembly is arranged to drive the lateral movement of the two separation nets, and the two separation nets are arranged in a vertically adhering manner;

[0015] The control module is electrically connected with the driving assembly, and the control module drives the two driving assemblies to control the two separation nets to move transversely towards opposite sides, so that the corresponding through holes on the two separation nets are repeatedly dislocated and overlapped, and the ice on the separation nets is broken.

[0016] As a further improvement, the driving assembly comprises two telescopic guide rod motors respectively arranged on the opposite sides of the two separation nets, and the telescopic guide rod motors are electrically connected with the control module, and the control module controls the two telescopic guide rod motors to drive the two separation nets to move transversely towards opposite directions.

[0017] As a further improvement, the separation net comprises a first mesh arranged above and a second mesh arranged below, and the through holes on the first mesh and the second mesh are overlapped.

[0018] As a further improvement, a plurality of first protrusions are arranged below the first mesh, and a plurality of second protrusions are arranged above the second mesh corresponding to the positions of the first protrusions, and the two separation nets move transversely, and the dislocation state transformation generated in the process of contact / separation of the first protrusions and the second protrusions causes the separation nets to vibrate with small amplitude and high frequency.

[0019] As a further improvement, the first protrusions and the second protrusions are arranged on the edges of the through holes along the transverse movement direction of the separation nets.

[0020] As a further improvement, the through-hole aperture interval is between 5mm-10mm.

[0021] As a further improvement, the output end of one of the telescopic guide rod motors is fixedly connected to the middle of the left side edge of the first mesh, and the output end of the other telescopic guide rod motor is fixedly connected to the middle of the right side edge of the upper second mesh.

[0022] As a further improvement, guide grooves are arranged inside the heat exchanger corresponding to the side edges of the first mesh and the second mesh, and the first mesh and the second mesh are guided to slide transversely through the guide grooves.

[0023] As a further improvement, the height of the guide groove is 2.1-2.2 times the single separation mesh.

[0024] Beneficial effects:

[0025] The utility model discloses a temperature detection module is arranged in the heat exchange area of heat exchanger, and the temperature of heat exchange area is monitored in real time. When the temperature detection module judges that the temperature of heat exchange area drops below 0 DEG C (that is, the temperature is too low, and there is icing risk), the control module will automatically start the adjustment mechanism.

[0026] The control module opens the second control valve, and the fourth pipeline is communicated with the third pipeline. At this time, the gas (that is, the gas with higher temperature) not cooled will flow into the third pipeline through the fourth pipeline and carry heat. At the same time, the opening range of the first control valve will be reduced, and the gas flow cooled by the frequency conversion compressor is reduced, so that the warm gas combines with the condensate and enters the heat exchange area.

[0027] After the warm gas mixes with the condensate, the warm gas is input to the heat exchange area, the temperature of the heat exchange area is increased, the temperature is prevented from being too low, and the icing phenomenon is avoided. The temperature of the heat exchange area is maintained in a reasonable range, the ice blockage is avoided, and the accurate adjustment mechanism is formed to prevent the icing and the ice blockage phenomenon from being quickly handled. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, other related drawings can be obtained according to these drawings without the creative labor.

[0029] Figure 1 It is a side view structure schematic diagram of the ice blockage prevention high-efficiency cold dryer of the utility model.

[0030] Figure 2 is an enlarged state schematic view of the anti-icing assembly.

[0031] Figure 3 is an enlarged state schematic view of the working state of the anti-icing assembly.

[0032] Figure 4 is Figure 2 is an enlarged side view structural schematic view of the separation net at A.

[0033] Figure 5 is Figure 3 is an enlarged side view structural schematic view of the separation net at B.

[0034] Figure 6 is a module connection schematic view of the anti-icing high-efficiency cold dryer.

[0035] The reference signs: 1, heat exchanger; 11, heat exchange area; 12, airway opening; 13, first pipeline; 2, frequency conversion compressor; 21, second pipeline; 3, condensing assembly; 31, third pipeline; 32, first control valve; 4, fourth pipeline; 41, second control valve; 5, temperature detection module; 6, control module; 7, telescopic guide rod motor; 71, first mesh; 72, second mesh; 711, first protruding block; 721, second protruding block; 73, through hole; 74, guide groove. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0038] Referring to Figures 1-6 As shown in the figure, an ice blocking prevention high-efficiency cold dryer comprises a heat exchanger 1, a heat exchange area 11 is arranged in the heat exchanger 1, and an air passage 12 is arranged on the heat exchange area 11.

[0039] The air passage 12 is connected with the input port of a variable frequency compressor 2 through a first pipeline 13, the output port of the variable frequency compressor 2 and a condensing assembly 3 are connected through a second pipeline 21, the input port of the heat exchange area is connected with the condensing assembly 3 through a third pipeline 31, and a fourth pipeline 4 is connected with the input port of the heat exchange area through the third pipeline 31.

[0040] A first control valve 32 is arranged on the third pipeline 31, a second control valve 41 is arranged on the fourth pipeline 4, the communication state of the third pipeline 31 and the fourth pipeline 4 is controlled through the second control valve 41, and a temperature detection module 5 is arranged in the heat exchange area 11.

[0041] A control module 6 is electrically connected with the variable frequency compressor 2, the condensing assembly 3, the first control valve 32 and the second control valve 41.

[0042] When the temperature detection module 5 judges that the temperature of the heat exchange area 11 is less than 0 DEG, the second control valve 41 is opened through the control module 6, and the opening range of the first control valve 32 is reduced, so that the gas not cooled by the variable frequency compressor 2 is combined with the condensing liquid in the fourth pipeline 4 and the third pipeline 31, and is input into the heat exchange area 11, thereby improving the temperature of the heat exchange area 11.

[0043] In the use process of the cold dryer, the core problem is that the low temperature of the heat exchange area leads to ice formation of the condensing water, and then ice blocking phenomenon is formed, which affects the air flow, and even causes the equipment to stop or malfunction.

[0044] The temperature detection module 5 is arranged in the heat exchange area 11 of the heat exchanger 1, and the temperature of the heat exchange area 11 is monitored in real time. When the temperature detection module 5 judges that the temperature of the heat exchange area 11 is below 0 DEG C (that is, the temperature is too low, and there is a risk of icing), the control module 6 will automatically start the adjusting mechanism.

[0045] The control module 6 opens the second control valve 41, so that the fourth pipeline 4 is communicated with the third pipeline 31. At this time, the gas which is not cooled (i.e. the gas with high temperature) will flow into the third pipeline 31 through the fourth pipeline 4, carrying heat. At the same time, the opening range of the first control valve 32 will be reduced, reducing the flow of the gas cooled by the variable frequency compressor 2, so that these warm gases combine with the condensate to enter the heat exchange area 11.

[0046] After the warm gas mixes with the condensate, it is input into the heat exchange area 11, increasing the temperature of the heat exchange area 11, preventing the temperature from being too low and avoiding the occurrence of icing. The temperature of the heat exchange area is ensured to be maintained within a reasonable range, avoiding the occurrence of ice blockage.

[0047] In the working process of the cold dryer, in addition to ensuring that the temperature of the heat exchange area 11 is properly controlled, it is also crucial to prevent the condensate from icing at the output port and causing ice blockage. The output port is an important position where the airflow of the cold dryer finally enters the variable frequency compressor 2. If the condensate ices at this position, it will cause the airflow to be blocked, and even cause equipment failure or shutdown. Therefore, it is particularly important to design an ice blockage prevention assembly to deal with the icing problem at the output port. When the temperature in the heat exchange area 11 is too low for a period of time, causing ice blockage to have occurred, to solve this problem, an ice blockage prevention assembly is also provided at the air outlet, and the ice blockage prevention assembly comprises:

[0048] A set of separation nets laterally movably installed inside the heat exchanger 1, and a driving assembly driving the lateral movement of the two separation nets, the two separation nets being arranged in an upper and lower abutting manner;

[0049] The control module 6 is electrically connected with the driving assembly, and the control module 6 drives the two driving assemblies to control the two separation nets to move transversely towards opposite sides, so that the corresponding through holes 73 on the two separation nets repeatedly dislocate and coincide, breaking the ice on the separation nets.

[0050] The driving assembly comprises two telescopic guide rod motors 7 respectively installed on opposite sides of the two separation nets, and the telescopic guide rod motors 7 are electrically connected with the control module 6, and the control module 6 controls the two telescopic guide rod motors 7 to drive the two separation nets to move transversely towards opposite directions.

[0051] Through the separation nets provided at the output port and the transverse movement design, the ice formed by the condensate on the separation nets can be effectively broken or prevented from accumulating. The movement of the separation nets prevents the ice from accumulating on the grid for a long time, thereby avoiding the occurrence of ice blockage.

[0052] By controlling the repeated dislocation and coincidence of the separation net in the transverse direction, the ice can be "scattered" to prevent the ice layer from gradually thickening. This action is similar to stirring, which can break the ice into small pieces, thereby avoiding the formation of large ice blocks that block the airflow.

[0053] The control module 6 is connected to the driving assembly, which is automatically operated through an electric control system, so that the movement of the separation net does not require manual intervention. When the temperature is below 0°, the driving assembly is automatically started to adjust the position of the separation net to perform the action of breaking or preventing icing.

[0054] The telescopic guide rod motor 7 driving system can ensure the stable transverse movement of the separation net, avoiding the situation that the separation net does not move smoothly or fails due to changes in external environment, equipment wear and tear, or other reasons. Through continuous movement and adjustment, the anti-icing blockage assembly can ensure that icing does not affect the output airflow, thereby avoiding damage and downtime caused by ice blockage and ensuring the long-term reliability of the equipment.

[0055] To ensure that the output hole of the airflow is as smooth as possible, the separation net includes a first mesh 71 above and a second mesh 72 below, and the through holes 73 on the first mesh 71 and the second mesh 72 coincide. Through the coincidence of the holes in the normal state, the airflow output is as smooth as possible.

[0056] To further break and detach the ice blocks on the separation net that have formed an ice state, a plurality of first protrusions 711 are arranged below the first mesh 71, and a plurality of second protrusions 721 are arranged above the second mesh 72 corresponding to the positions of the first protrusions 711. The dislocation state transformation generated by the contact / separation process of the first protrusions 711 and the second protrusions 721 causes the separation net to vibrate at a small amplitude and high frequency.

[0057] Through the contact and separation of the first protrusions 711 and the second protrusions 721 when the first mesh 71 and the second mesh 72 move in dislocation, the drop formed by the contact and separation generates a vibration effect, so that the two separation nets vibrate at the same time, thereby accelerating the breaking and detachment of the ice state.

[0058] The first protrusions 711 and the second protrusions 721 are arranged along the transverse movement direction of the separation net on the edge of the through holes 73.

[0059] The aperture interval of the through hole 73 is between 5mm-10mm. The aperture size of the hole directly affects whether the ice block can be smoothly separated from the separation net after being broken. The aperture set between 5mm-10mm can ensure that most small to medium-sized ice blocks can be effectively broken under the action of vibration and can quickly fall through the aperture. Too small aperture may limit the separation of ice blocks, leading to ice accumulation, while too large aperture may not effectively break smaller ice blocks, affecting the efficiency of vibration breaking.

[0060] The output end of one of the telescopic guide rod motors 7 installed inside the heat exchanger 1 is fixedly connected to the middle of the left side edge of the first mesh 71, and the output end of the other telescopic guide rod motor 7 is fixedly connected to the middle of the right side edge of the upper second mesh 72.

[0061] The guide groove 74 corresponding to the side edges of the first mesh 71 and the second mesh 72 inside the heat exchanger 1 is provided, and the first mesh 71 and the second mesh 72 are guided to slide transversely through the guide groove 74;

[0062] The height of the guide groove 74 is 2.1-2.2 times the single separation net.

[0063] By setting protrusions on the first mesh 71 and the second mesh 72, when the two separation meshes move transversely, the contact and separation between the protrusions produce a dislocation and drop effect. This dislocation state transformation causes the mesh to produce small amplitude high frequency vibration, which in turn helps to break and shake the ice that has formed. This method can effectively prevent the ice layer from being too thick, thereby avoiding the ice blockage phenomenon caused by ice accumulation.

[0064] During the breaking process of the ice layer, the vibration accelerates the separation of the ice blocks, reducing the residence time of the condensed water or ice blocks on the separation net, ensuring the smooth flow of the airflow. This vibration effect plays a very significant role in the detachment of the ice material, effectively improving the performance of the anti-icing assembly.

[0065] The design of the protrusions helps to increase the frequency and amplitude of the vibration, ensuring more complete breaking effect. Unlike traditional purely mechanical means, this design provides a "intermittent vibration" method, so that the ice material does not adhere to the separation net for a long time, and falls off in time, improving the ice breaking and anti-blocking efficiency.

[0066] By setting the layout of the protrusions, appropriate impact and vibration are ensured during the movement of the separation net, thereby quickly breaking the relatively solid ice.

[0067] The guide groove 74 can ensure the transverse sliding of the two separated meshes to be more stable, and avoid jamming or uneven movement caused by improper guiding. The height of the guide groove 74 is designed to be 2.1-2.2 times of the single separated mesh, which further ensures that the separated mesh can keep a stable movement track when sliding, and the two separated meshes can be as close as possible to ensure that there is a shock space, and ensure that the vibration effect can be effectively transmitted.

[0068] It should be noted that the device structure and the drawings of the utility model mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design, and under the premise that the above-mentioned technical personnel in the field understand the principle of the utility model, the specific of the power mechanism, the power supply system and the control system can be clearly known, and the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the technical personnel in the field;

[0069] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional screw, rivet, welding and other conventional means in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, and the components known by the technical personnel in the field, the structure and principle thereof can be known by the technical personnel through the technical manual or through the conventional experimental method.

[0070] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For technical personnel in the field, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-efficiency freeze-drying machine that prevents ice blockage, characterized by, It includes: Heat exchanger (1), the heat exchanger (1) is internally provided with heat exchange zone (11), which is provided with airway mouth (12); The airway mouth (12) is connected with the input port of the variable frequency compressor (2) through the first pipeline (13), and the output port of the variable frequency compressor (2) is connected with the condensing assembly (3) through the second pipeline (21), the input port of the heat exchange zone (11) is connected with the condensing assembly (3) through the third pipeline (31), and the fourth pipeline (4) is connected with the input port of the heat exchange zone (11) through the third pipeline (31); A first control valve (32) is arranged on the third pipeline (31), a second control valve (41) is arranged on the fourth pipeline (4), the communication state of the third pipeline (31) and the fourth pipeline (4) is controlled through the second control valve (41), and a temperature detection module (5) is arranged in the heat exchange zone (11); The control module (6) is electrically connected with the variable frequency compressor (2), the condensing assembly (3), the first control valve (32) and the second control valve (41); When the temperature detection module (5) judges that the temperature of the heat exchange zone (11) is less than 0°, the second control valve (41) is opened through the control module (6), and the opening amplitude of the first control valve (32) is reduced, so that the gas not cooled by the variable frequency compressor (2) is combined with the condensate in the fourth pipeline (4) and the third pipeline (31), and is input into the heat exchange zone (11), so that the temperature of the heat exchange zone (11) is increased.

2. The high efficiency cold drying machine of preventing ice block according to claim 1, characterized in that: It also includes that an anti-icing assembly is arranged at the airway mouth (12), which includes: A group of separation nets movably mounted in the heat exchanger (1), and a driving assembly driving the two separation nets to move laterally, The control module (6) is electrically connected with the driving assembly, and the control module (6) drives the two driving assemblies to control the two separation nets to move transversely towards the opposite side, so that the corresponding through holes (73) on the two separation nets are repeatedly dislocated and coincided, and the ice on the separation nets is broken.

3. The high efficiency cold drying machine of preventing ice block according to claim 2, characterized in that: The driving assembly includes two telescopic guide rod motors (7) respectively mounted on the opposite sides of the two separation nets, the telescopic guide rod motor (7) is electrically connected with the control module (6), and the control module (6) controls the two telescopic guide rod motors (7) to drive the two separation nets to move laterally towards the opposite direction.

4. The high efficiency cold drying machine of preventing ice block according to claim 3, characterized in that: The separation net includes the first mesh (71) located above and the second mesh (72) located below, and the through holes (73) on the first mesh (71) and the second mesh (72) are coincided.

5. The high efficiency cold drying machine of preventing ice block according to claim 4, characterized in that: A plurality of first protrusions (711) are arranged below the first mesh (71), and a plurality of second protrusions (721) are arranged above the second mesh (72) corresponding to the positions of the first protrusions (711); the two separation meshes are transversely movable, and the dislocation state is changed through the contact / separation process of the first protrusions (711) and the second protrusions (721), so that the separation meshes form small-amplitude high-frequency vibrations.

6. The high efficiency cold drying machine of preventing ice block of claim 5, wherein: The first protrusions (711) and the second protrusions (721) are arranged on the edges of the through holes (73) along the transverse movement direction of the separation meshes.

7. The high efficiency cold drying machine of claim 6, wherein: The aperture interval of the through holes (73) is between 5 mm and 10 mm.

8. The high efficiency cold drying machine of claim 7, wherein: The output ends of the telescopic guide rod motors (7) embedded in the heat exchanger (1) are fixedly connected to the middle portions of the left edges of the first mesh (71) and the right edges of the second mesh (72).

9. The high efficiency cold drying machine of claim 8, wherein: Guide grooves (74) are arranged in the heat exchanger (1) corresponding to the side edges of the first mesh (71) and the second mesh (72), and the first mesh (71) and the second mesh (72) are guided to slide transversely through the guide grooves (74).

10. The high efficiency cold drying machine of claim 9, wherein: The height of the guide grooves (74) is 2.1-2.2 times the single separation mesh.

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