CN211119743U

CN211119743U - Freezing dehumidifier with intelligent defrosting function

Info

Publication number: CN211119743U
Application number: CN201922019588.6U
Authority: CN
Inventors: 方欣; 朱晓建; 林雨; 应李俊; 张世华; 程晋翔; 蒋乔麒; 贾春晓
Original assignee: Hangzhou Ruiya Electric Co ltd
Current assignee: Hangzhou Ruiya Electric Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-28
Anticipated expiration: 2029-11-20

Abstract

The utility model relates to a dehumidifier technical field, concretely relates to freezing dehumidifier with intelligent frost function. The utility model provides a pair of freeze dehumidifier with intelligent frost function aims at overcoming the problem that probably has the water droplet to remain on the evaporimeter after the frost that exists among the background art. The utility model discloses a refrigeration dehumidifier with intelligent defrosting function, which comprises a bracket, a box body and an air inlet, wherein an evaporator, a condenser and a fan are arranged in the box body, and an air injection mechanism is also arranged above the evaporator; the air injection mechanism comprises a shell, a transmission shaft is horizontally arranged in the shell, a plurality of air injection heads are arranged on the transmission shaft, and a rectangular through hole is formed in the lower end face of the shell so that the interior of the shell is communicated with the upper part of the evaporator; a drying device and a driving motor are arranged in the shell; the refrigeration dehumidifier also comprises an air pump; when the air injection mechanism works, the air injection head turns to the evaporator, and the air pump works to enable the air injection head to face the evaporator.

Description

Freezing dehumidifier with intelligent defrosting function

Technical Field

The utility model belongs to the technical field of the dehumidifier technique and specifically relates to a freezing dehumidifier with intelligent frost function is related to.

Background

The basic principle of the refrigeration dehumidifier is that water vapor is condensed to form water drops when meeting cooling copper pipe fins, and the dehumidifier is a device for converting gaseous water into liquid water in the whole liquefaction process.

When the dehumidifier operates in an environment lower than a certain temperature, frost can be formed, and the dehumidification capacity is influenced when the frost is formed to a certain degree; the lower the running ambient temperature, the faster the frost formation, and the faster the dehumidification capability is reduced, and in order to solve the above problems, a defrosting mode is generally adopted. For a normal-temperature common dehumidifier, a mode of stopping a compressor and starting a fan to operate is generally adopted to defrost an evaporator, or a mode of starting the compressor and bypassing hot gas is adopted to defrost the evaporator. The special low-temperature dehumidifier is not suitable for the two defrosting modes because the two defrosting modes have long defrosting time, high defrosting frequency, short running time and greatly reduced dehumidifying capacity. The existing mode of heating an electric heating pipe in an evaporator is adopted for defrosting, the power consumption is high, and particularly, the mode is extremely not energy-saving when the running environment is operated in a weather with a slightly high temperature but frosting. And the defrosting sensor is arranged in a space with high humidity, so that the sensor is easy to damage, the sensor is damaged, so that defrosting cannot be performed, the unit frosts seriously, the compressor runs under the condition of liquid impact for a long time, and the compressor is directly damaged. Meanwhile, a defrosting mode of stopping the compressor and starting the fan is adopted, water drops possibly remain on the evaporator after defrosting, and therefore the dehumidifying effect of the dehumidifier is affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a freeze dehumidifier with intelligent frost function to there may be the water droplet after the defrosting that exists in the solution background art to remain the problem on the evaporimeter.

Realize above-mentioned purpose the technical scheme of the utility model be, a freeze dehumidifier with intelligent frost function.

The refrigeration dehumidifier with the intelligent defrosting function manufactured by the technical scheme of the utility model comprises a bracket, wherein a box body is arranged on the bracket, an air inlet is arranged on the side surface of the box body, an air outlet is arranged at the top of the box body, an evaporator, a condenser and a fan are arranged in the box body, and the evaporator comprises a heat exchange tube and fins; the evaporator is respectively communicated with the air inlet and the condenser, the fan is communicated with the condenser, and the fan works to enable the gas to be dried to flow into the box body from the air inlet, sequentially pass through the evaporator and the condenser to complete dehumidification, and finally be discharged out of the box body by the fan; the bracket is also provided with a compressor, and an air injection mechanism is also arranged above the evaporator in the box body; the air injection mechanism comprises a shell, a transmission shaft is horizontally arranged in the shell, two ends of the transmission shaft are rotatably connected with the shell, a plurality of air injection heads are fixedly arranged on the transmission shaft side by side along the axis direction of the transmission shaft, and a rectangular through hole is formed in the lower end face of the shell so that the interior of the shell is communicated with the upper part of the evaporator; the drying device used for keeping the interior of the shell dry is arranged in the shell, and the driving motor used for driving the transmission shaft to rotate is also arranged in the shell;

the refrigeration dehumidifier also comprises an air pump, wherein the air pump is arranged on the support, the air spraying heads are communicated with the air pump through air conveying pipes, the air spraying mechanism works, the air spraying heads turn to the evaporator, and the air pump works to enable the air spraying heads to blow air to the heat exchange pipes and the fins.

The drying device comprises an isolation net connected with the inner wall of the shell, and a plurality of molecular sieves are arranged on one side of the isolation net, which is back to the air nozzle, and on the inner wall of the shell.

The shell also comprises a sealing plate with the same size as the through hole, and the upper surface of the sealing plate is fixedly connected with one side of each gas nozzle.

The edge of the through hole and the edge of the sealing plate are provided with magnetic blocks.

The sealing plate is also provided with a sealing strip, and the sealing strip is positioned at the gap between the sealing plate and the through hole.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

due to the arrangement, when the freeze dehumidifier adopts the compressor and the fan to defrost, water drops formed on the evaporator due to defrosting can be cleaned in time, and the phenomenon that the water drops remained on the evaporator are precooled and frozen to influence the condensation drying effect of the evaporator on the gas to be dried in the subsequent dehumidification process of the freeze dehumidifier is prevented. The drying device is arranged to enable the interior of the shell to be always in a relatively dry environment, so that when the freeze dehumidifier works in a low-temperature and humid environment, the air nozzle on the air nozzle head is prevented from being frozen to influence the normal operation of the air injection mechanism. The sealing performance of the shell is further improved by the arrangement of the sealing strips, the air spraying head is guaranteed to be always in a dry environment, and the stability of the air spraying mechanism is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a refrigeration dehumidifier with an intelligent defrosting function according to the present invention;

fig. 2 is a schematic structural diagram of a refrigeration dehumidifier with an intelligent defrosting function according to the present invention;

fig. 3 is a schematic view of a partial structure of a refrigeration dehumidifier with an intelligent defrosting function according to the present invention;

fig. 4 is a partial enlarged view of the freeze dehumidifier with intelligent defrosting function according to the present invention;

fig. 5 is a schematic structural diagram of the air injection mechanism of the present invention in a non-air injection state;

fig. 6 is a schematic structural diagram of the air injection mechanism of the present invention in a non-air injection state.

In the figure, 1, a bracket; 2. a box body; 3. an air inlet; 4. an air outlet; 5. an evaporator; 6. a condenser; 7. a fan; 8. a heat pipe; 9. a fin; 10. a compressor; 11. an air injection mechanism; 12. a housing; 13. a drive shaft; 14. a gas showerhead; 15. a through hole; 16. a drying device; 17. a drive motor; 18. an air pump; 19. an isolation net; 20. a molecular sieve; 21. a sealing plate; 22. a magnetic block; 23. a sealing strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 6, a refrigeration dehumidifier with an intelligent defrosting function comprises a support 1, wherein a box body 2 is arranged on the support 1, an air inlet 3 is arranged on the side surface of the box body 2, an air outlet 4 is arranged at the top of the box body 2, an evaporator 5, a condenser 6 and a fan 7 are arranged in the box body 2, and the evaporator 5 comprises a heat exchange tube 8 and fins 9; the evaporator 5 is respectively communicated with the air inlet 3 and the condenser 6, the fan 7 is communicated with the condenser 6, and the fan 7 works to enable the gas to be dried to flow into the box body 2 from the air inlet 3, and then the gas to be dried sequentially passes through the evaporator 5 and the condenser 6 to complete dehumidification and is finally discharged out of the box body 2 by the fan 7; the bracket 1 is also provided with a compressor 10.

Referring to fig. 1 to 6, an air injection mechanism 11 is further disposed in the case 2 above the evaporator 5; the air injection mechanism 11 comprises a shell 12, a transmission shaft 13 is horizontally arranged in the shell 12, two ends of the transmission shaft 13 are rotatably connected with the shell 12, a plurality of air injection heads 14 are fixedly arranged on the transmission shaft 13 side by side along the axial direction of the transmission shaft 13, and a rectangular through hole 15 is formed in the lower end face of the shell 12 so that the interior of the shell 12 is communicated with the upper part of the evaporator 5; a drying device 16 for keeping the interior of the shell 12 dry is arranged in the shell 12, and a driving motor 17 for driving the transmission shaft 13 to rotate is also arranged in the shell 12; the drive motor 17 is driven by an external power supply.

The refrigeration dehumidifier also comprises an air pump 18, the air pump 18 is arranged on the bracket 1, each air nozzle 14 is communicated with the air pump 18 through an air conveying pipe, the air nozzle 14 turns to the evaporator 5 when the air injection mechanism 11 works, and the air pump 18 works to enable the air nozzle 14 to blow air to the heat exchange pipe 8 and the fins 9. The evaporator 5 is easy to frost when condensing and drying gas to be dried, and the freeze dehumidifier can defrost by stopping the compressor 10 and starting the fan 7; at this time, the compressor 10 stops delivering the cooling liquid to the heat dissipation pipe 8 in the evaporator 5, so that the evaporator 5 stops condensing and drying the gas to be dried, and as the temperature of the gas to be dried is higher than that of the evaporator 5, the gas to be dried enters the evaporator 5 from the air inlet 3 under the action of the fan 7, and heat is continuously transferred to the frosting part of the evaporator 5 until defrosting. When the frost is formed too much, a part of the frost is converted into liquid, so after the defrosting is carried out by the defrosting method, the air injection mechanism 11 is adopted to remove the residual water drops on the evaporator 5. 11 during operation of jet mechanism, driving motor 17 is rotatory through gear drive transmission shaft 13, be provided with 5 jet heads 14 on the transmission shaft 13 side by side, the front end of jet head 14 is provided with the duckbilled nozzle, the length direction of nozzle is the same with the axis direction of

transmission shaft

13, 5 jet heads 14 rotate under the effect of transmission shaft 13 and make the direction of nozzle towards evaporimeter 5, then 18 work of air pump is to jet head 14 output high-pressure gas, make the upper end of nozzle spun gas ability from evaporimeter 5 blow to the lower extreme of evaporimeter 5, take away the water droplet on heat exchange tube 8 and the fin 9 in the evaporimeter 5. After the air injection mechanism 11 works for a period of time, the air pump 18 is closed, and the driving motor 17 drives the transmission shaft 13 to rotate, so that the air injection head 14 is integrally retracted into the shell 12.

Referring to fig. 3 to 6, the drying device 16 includes an isolation net 19 connected to the inner wall of the housing 12, and a plurality of molecular sieves 20 are disposed on the side of the isolation net 19 facing away from the gas nozzle 14 and the inner wall of the housing 12. The drying device 16 is arranged to make the inside of the casing 12 always in a relatively dry environment, so as to prevent the air nozzle on the air nozzle 14 from being frozen to affect the normal operation of the air injection mechanism 11 when the freeze dehumidifier works in a low-temperature and humid environment.

Referring to fig. 4 to 6, the housing 12 further includes a sealing plate 21 having the same size as the through-hole 15, and an upper surface of the sealing plate 21 is fixedly coupled to one side of each of the gas nozzles 14. When the air injection mechanism is in a non-air injection state, the air injection head 14 is retracted into the shell 12, and the sealing plate 21 blocks the through hole 15 at the lower part of the shell 12, so that the air injection head 14 is in a relatively sealed environment in the box body 2, the arrangement greatly reduces the external water vapor entering the shell 12, and reduces the possibility that the air injection head 14 is frozen in a low-temperature environment.

Referring to fig. 4 to 6, magnetic blocks 22 are provided on the sealing plate 21 and at the edge of the through-hole 15. The magnetic block 22 is arranged to enable the sealing plate 21 connected with the air nozzle 14 to be fixedly adsorbed with the shell 12 when the air nozzle 14 is retracted into the shell 12 when the air nozzle 11 does not work, and the structure is simple.

Referring to fig. 4 to 6, the sealing plate 21 is further provided with a sealing strip 23, and the sealing strip 23 is located at a gap between the sealing plate 21 and the through hole 15. The sealing strip 23 further improves the sealing performance of the shell 12, ensures that the air nozzle 14 is always in a dry environment, and ensures the stability of the air injection mechanism 11.

The working principle is as follows:

the evaporator 5 is easy to frost when condensing and drying gas to be dried, and the freeze dehumidifier can defrost by stopping the compressor 10 and starting the fan 7; at this time, the compressor 10 stops delivering the cooling liquid to the heat dissipation pipe 8 in the evaporator 5, so that the evaporator 5 stops condensing and drying the gas to be dried, and as the temperature of the gas to be dried is higher than that of the evaporator 5, the gas to be dried enters the evaporator 5 from the air inlet 3 under the action of the fan 7, and heat is continuously transferred to the frosting part of the evaporator 5 until defrosting. When the frost is formed too much, a part of the frost is converted into liquid, so after the defrosting is carried out by the defrosting method, the air injection mechanism 11 is adopted to remove the residual water drops on the evaporator 5. 11 during operation of jet mechanism, driving motor 17 is rotatory through gear drive transmission shaft 13, be provided with 5 jet heads 14 on the transmission shaft 13 side by side, the front end of jet head 14 is provided with the duckbilled nozzle, the length direction of nozzle is the same with the axis direction of

transmission shaft

13, 5 jet heads 14 rotate under the effect of transmission shaft 13 and make the direction of nozzle towards evaporimeter 5, then 18 work of air pump is to jet head 14 output high-pressure gas, make the upper end of nozzle spun gas ability from evaporimeter 5 blow to the lower extreme of evaporimeter 5, take away the water droplet on heat exchange tube 8 and the fin 9 in the evaporimeter 5. After the air injection mechanism 11 works for a period of time, the air pump 18 is closed, and the driving motor 17 drives the transmission shaft 13 to rotate, so that the air injection head 14 is integrally retracted into the shell 12. The refrigeration dehumidifier is also provided with an auxiliary heating module, a control system, an air return sensor and a defrosting sensor, wherein the auxiliary heating module comprises a heating pipe 8 arranged in the evaporator 5.

Controlling the set temperature by a controller: ts; entering defrosting temperature Te 1; and (3) exiting defrosting temperature: te 2; air return temperature: t; the defrost interval t.

Defrosting mode 1: defrosting: when the dehumidifier operates, when the temperature of the coil pipe is lower than defrosting temperature Te and the operation time is more than or equal to defrosting interval t, stopping the compressor 10 and starting the fan 7; and (3) removing defrosting: when the coil temperature > defrost temperature Te2, compressor 10 is started (compressor 10 meets minimum downtime).

Defrosting mode 2: defrosting: when the dehumidifier operates, when the temperature of the heat exchange tube is lower than defrosting temperature Te and the operation time is more than or equal to defrosting interval t, stopping the compressor 10 and starting electric heating; when the heat exchange pipe 8 temperature > the defrosting temperature Te2, the compressor 10 is started (the compressor 10 satisfies the minimum shutdown time).

Failure defrosting: defrosting: when the dehumidifier runs, when one probe of the return air sensor and the defrosting sensor is detected to be out of order, the accumulated time of the compressor 10 runs for more than 2 hours, the two hours are not defrosted, the compressor 10 is stopped, and the fan 7 is started; and (3) removing defrosting: defrosting time is 10 minutes, and the compressor 10 is started.

When the unit operates, the return air temperature is collected, and when the return air temperature T is more than or equal to Ts, the unit is controlled in a defrosting mode 1;

when the unit operates, the return air temperature is collected, and when the return air temperature T is less than or equal to Ts +2, the unit is controlled in a defrosting mode 2;

when the unit operates, the return air temperature is collected, and when the return air temperature Ts is less than T and less than Ts +2, the unit is controlled by adopting a defrosting mode in the previous period;

when one probe of the return air sensor and the defrosting sensor is in failure, failure defrosting is adopted.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. A refrigeration dehumidifier with an intelligent defrosting function comprises a support (1), wherein a box body (2) is arranged on the support (1), an air inlet (3) is formed in the side face of the box body (2), an air outlet (4) is formed in the top of the box body (2), an evaporator (5), a condenser (6) and a fan (7) are arranged in the box body (2), and the evaporator (5) comprises a heat exchange tube (8) and fins (9); the evaporator (5) is respectively communicated with the air inlet (3) and the condenser (6), the fan (7) is communicated with the condenser (6), and the fan (7) works to enable gas to be dried to flow into the box body (2) from the air inlet (3), sequentially pass through the evaporator (5) and the condenser (6) to complete dehumidification, and finally be discharged out of the box body (2) by the fan (7); still be provided with compressor (10) on support (1), its characterized in that: an air injection mechanism (11) is also arranged above the evaporator (5) in the box body (2); the air injection mechanism (11) comprises a shell (12), a transmission shaft (13) is horizontally arranged in the shell (12), two ends of the transmission shaft (13) are rotatably connected with the shell (12), a plurality of air injection heads (14) are fixedly arranged on the transmission shaft (13) side by side along the axis direction of the transmission shaft (13), and a rectangular through hole (15) is formed in the lower end face of the shell (12) so that the interior of the shell (12) is communicated with the upper part of the evaporator (5); a drying device (16) for keeping the interior of the shell (12) dry is arranged in the shell (12), and a driving motor (17) for driving the transmission shaft (13) to rotate is also arranged in the shell (12);

the refrigeration dehumidifier further comprises an air pump (18), wherein the air pump (18) is arranged on the support (1), each air spraying head (14) is communicated with the air pump (18) through an air conveying pipe, the air spraying mechanism (11) works, the air spraying head (14) turns to the evaporator (5), and the air pump (18) works to enable the air spraying head (14) to blow air to the heat exchange pipe (8) and the fins (9).

2. The freeze dehumidifier with intelligent defrosting function according to claim 1, wherein: the drying device (16) comprises an isolation net (19) connected with the inner wall of the shell (12), and a plurality of molecular sieves (20) are arranged on one side, back to the air nozzle (14), of the isolation net (19) and the inner wall of the shell (12).

3. The freeze dehumidifier with intelligent defrosting function according to claim 1, wherein: the shell (12) further comprises a sealing plate (21) with the same size as the through hole (15), and the upper surface of the sealing plate (21) is fixedly connected with one side of each gas nozzle (14).

4. The freeze dehumidifier with intelligent defrosting function according to claim 3, wherein: and magnetic blocks (22) are arranged on the sealing plate (21) and at the edge of the through hole (15).

5. The freeze dehumidifier with intelligent defrosting function according to claim 4, wherein: the sealing plate (21) is further provided with a sealing strip (23), and the sealing strip (23) is located in a gap between the sealing plate (21) and the through hole (15).