Dehumidifier

Abstract

The utility model relates to the technical field of dehumidifiers, in particular to a dehumidifier which is characterized in that during normal dehumidification work, an air guide opening I is opened, a fan device runs, negative pressure is formed in an air duct to generate suction force, and external gas is exhausted after passing through an air inlet, an evaporator, the air guide opening I, a condenser and an air outlet; during self-cleaning work, the first air guide opening is closed, airflow between the evaporator and the condenser is blocked by the closed first air guide opening, the evaporator is continuously cooled during work, when low temperature generated by the evaporator during work cannot be completely taken away by the airflow, liquid water condensed on the outer surface of the evaporator can be frosted, and when the first air guide opening is opened again, liquid water condensed on the outer surface of the evaporator can be frosted. The air flow between the evaporator and the condenser can be conducted through the opened first air guide opening and is in a normal dehumidification state, at the moment, frost on the outer surface of the evaporator can be melted into condensed water, dirt is taken away, then the self-cleaning function is achieved, the structure is simple, cost is low, and cleaning efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidifiers, in particular to a dehumidifier. Background Art

[0002] Dehumidifier products are usually equipped with compressors and heat exchangers. To ensure heat exchange efficiency, the heat exchanger fins are tightly packed in multiple layers. When the machine is running, a large amount of air passes through the heat exchanger, and the dust and other dirt attached to it will be adsorbed on the fins, blocking ventilation and affecting the heat exchange effect. It is also easy to breed bacteria and affect the health of users. However, due to the tight arrangement of the fins, it is difficult for users to clean them.

[0003] A Chinese invention patent with patent announcement number CN108895619A discloses a dehumidifier self-cleaning method, device and dehumidifier. The prior art realizes water spraying by setting a spray device and controlling the spray device, thereby realizing automatic cleaning of the dehumidifier; however, the prior art needs to realize self-cleaning of the dehumidifier by combining structures such as a spray device, a water pump, a water tank, a control unit, and a detection unit. The structure is complex, the cost is high, and the cleaning efficiency is low.

[0004] Therefore, there is still room for improvement and development in the existing technology. Utility Model Content

[0005] In view of the problems of the prior art, the utility model provides a dehumidifier with simple structure, low cost and high cleaning efficiency.

[0006] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0007] A dehumidifier comprises a shell, the shell is provided with an air inlet and an air outlet, an air duct is formed between the air inlet and the air outlet, an evaporator, a condenser and a fan device are installed in the air duct, the evaporator is located in the air duct near the air inlet, the fan device is located in the air duct near the air outlet, the condenser is located between the evaporator and the fan device, and an air guide device is fixed between the evaporator and the condenser; the air guide device is provided with an air guide port 1 that can be opened or closed, when the air guide port 1 is closed, liquid water condensed on the outer surface of the evaporator can frost; when the air guide port 1 is opened, external air enters the air duct through the air inlet and flows through the outer surface of the evaporator, so that the frost on the outer surface of the evaporator melts into condensed water and takes away the dirt. In this way, when the dehumidification is working normally, once the air duct is opened, the fan device is running, so that the air duct forms a negative pressure to generate suction, so that the external gas is discharged after passing through the air inlet, evaporator, air duct one, condenser, and air outlet; when the self-cleaning is working, once the air duct is closed, the air flow between the evaporator and the condenser is blocked by the closed air duct one, and the evaporator continues to cool down during operation. When the low temperature generated by the evaporator during operation cannot be completely taken away by the air flow, the liquid water condensed on the outer surface of the evaporator can be frosted. When the air duct one is opened again, the air flow between the evaporator and the condenser can be connected through the opened air duct one, and it is in a normal dehumidification state. At this time, the frost on the outer surface of the evaporator can be melted into condensed water and take away dirt, thereby realizing the self-cleaning function. It has a simple structure, low cost, and high cleaning efficiency. In actual applications, the fins of the evaporator are compact multi-layer sheets. When the dehumidifier is running, the external gas enters the air duct through the air inlet and flows through the fins of the evaporator.

[0008] According to the above scheme, the air guide device includes a bracket, a fan blade and a driving assembly, an air guide port 1 is formed on the bracket, the fan blade is movably mounted on the bracket, and the driving assembly is used to drive the fan blade to rotate to open or close the air guide port 1. In this arrangement, the fan blade is driven to rotate by the driving assembly to open or close the air guide port 1, and the structure is simple.

[0009] According to the above scheme, the bracket is provided with a grille 1, and there are multiple fan blades. The multiple fan blades are hinged side by side on the side of the grille 1 away from the evaporator, and the multiple fan blades are connected by a connecting rod transmission. The driving component includes a stepper motor, and the output end of the stepper motor is fixedly connected to the fan blades. In this way, the fan blades are driven to rotate forward and reverse by the stepper motor. Since the multiple fan blades are driven by the connecting rod, the multiple fan blades can rotate synchronously. When the fan blades rotate to expand relative to the grille 1, the air guide port 1 is in an open state. When the fan blades rotate to close relative to the grille 1, the air guide port 1 is in a closed state. It should be noted that the multiple fan blades are hinged side by side on the side of the grille 1 away from the evaporator, so that the fan blades and the evaporator are separated by a certain distance through the grille 1, which can effectively prevent the frost on the outer surface of the evaporator from sticking to the fan blades, thereby ensuring that the fan blades can rotate back and forth relative to the grille 1.

[0010] According to the above solution, the gap between the bracket and the shell forms a normally open air guide port 2, and the air intake of the air guide port 2 is less than the air intake of the air guide port 1. In this way, when the air guide port 1 is closed, the condenser can operate normally under the effect of the normally open air guide port 2, and the evaporator can continue to cool down during operation; in actual application, the airflow through the air guide port 2 cannot completely take away the low temperature generated by the evaporator.

[0011] According to the above solution, the evaporator and the condenser are respectively provided with fixing side plates for fixing the bracket. This arrangement is convenient for assembly, and the bracket is fixed between the evaporator and the condenser through the two fixing side plates on the evaporator and the condenser.

[0012] According to the above scheme, the fan device includes a centrifugal fan wheel and a motor, the centrifugal fan wheel is connected to the output end of the motor, and the motor is used to drive the centrifugal fan wheel to rotate. In this arrangement, the centrifugal fan wheel is driven by the motor to rotate, so that negative pressure is formed in the air duct to generate suction, so that external gas enters the air duct through the air inlet.

[0013] According to the above scheme, a compressor is arranged in the shell, the compressor is connected to the condenser through a pipeline, the condenser is connected to the evaporator through a pipeline, and the evaporator is connected to the compressor through a pipeline. In this way, the compressor, the condenser, and the evaporator cooperate to form a refrigeration assembly. More specifically, the high-temperature and high-pressure refrigerant gas from the compressor enters the condenser for heat exchange, so that the gas is changed into liquid to release heat. At this time, the condenser will generate high temperature, and through the capillary throttling process, a low-temperature and low-pressure refrigerant liquid is generated. After entering the evaporator, heat exchange is carried out, absorbing the heat of the surrounding environment, thereby changing from liquid to gas and lowering the temperature. At this time, the evaporator will generate low temperature, and the heat will be discharged through the air duct to complete the dehumidification work.

[0014] According to the above scheme, a water receiving pan and a water tank are provided in the housing, the water receiving pan is arranged corresponding to the evaporator, and the water tank is arranged corresponding to the water receiving pan. In this arrangement, the condensed water and dirt after the frost on the outer surface of the evaporator is melted are collected by the water receiving pan and then transferred to the water tank. More specifically, the water receiving pan is located below the evaporator, and the drainage hole of the water receiving pan is connected to the water inlet of the water tank through a pipeline. When the melted condensed water and dirt fall into the water receiving pan, they are discharged through the drainage hole to the water tank for storage.

[0015] According to the above scheme, the housing includes a front plate, a rear plate, a top cover and a bottom plate which are fixedly connected, the air inlet is arranged on the rear plate, and the air outlet is arranged on the top cover; the rear plate is provided with a second grille corresponding to the air inlet, and the top cover is provided with a third grille corresponding to the air outlet. In this way, the air duct is designed at the upper part of the dehumidifier, and the air duct is an L-shaped structure, and its air outlet is arranged on the top cover, which has a better dehumidification effect; the design of the second grille and the third grille can play a filtering function on the gas; more specifically, it can prevent garbage from entering the dehumidifier.

[0016] According to the above scheme, the front plate is provided with a control panel, and the chassis is provided with a movable roller, which is convenient to operate and can make the dehumidifier have a mobile dehumidification function, and the dehumidification effect is better.

[0017] Beneficial effects of the utility model:

[0018] The utility model is arranged such that when the self-cleaning work is in progress, once the air guide port is closed, the airflow between the evaporator and the condenser is blocked by the closed air guide port, the evaporator continues to cool down during work, and when the low temperature generated by the evaporator during work cannot be completely carried away by the airflow, the liquid water condensed on the outer surface of the evaporator can be frosted, and when the air guide port is opened again, the airflow between the evaporator and the condenser can be conducted through the opened air guide port and is in a normal dehumidification state. At this time, the frost on the outer surface of the evaporator can be melted into condensed water and take away the dirt, thereby realizing the self-cleaning function. The utility model has a simple structure, low cost and high cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the whole dehumidifier of the utility model;

[0020] Figure 2 This is an exploded view of the whole dehumidifier of the utility model;

[0021] Figure 3 This is a schematic diagram of the assembly of the evaporator, air guide device and condenser of the utility model;

[0022] Figure 4 This is a diagram of the utility model air guide port in a closed state;

[0023] Figure 5 This is a schematic diagram of the airflow principle when the air guide port of the utility model is in a closed state;

[0024] Figure 6 This is a diagram of the utility model in which the air guide port is in an open state;

[0025] Figure 7 This is a schematic diagram of the air flow principle when the air guide port of the utility model is in an open state.

[0026] In the figure:

[0027] 1. Front panel; 2. Back panel; 3. Grille 2; 4. Top cover; 5. Air inlet; 6. Evaporator; 7. Stepper motor; 8. Bracket; 9. Connecting rod; 10. Fan blade; 11. Condenser; 12. Side panel; 13. Air duct; 14. Air outlet; 15. Centrifugal fan wheel; 16. Motor; 17. Water tray; 18. Compressor; 19. Chassis; 20. Water tank; 21. Air duct 1; 22. Air duct 2; 81. Grille 1. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figures 1 to 7 As shown, a dehumidifier described in the utility model includes a shell, the shell is provided with an air inlet 5 and an air outlet 14, an air duct 13 is formed between the air inlet 5 and the air outlet 14, an evaporator 6, a condenser 11 and a fan device are installed in the air duct 13, the evaporator 6 is located in the air duct 13 near the air inlet 5, the fan device is located in the air duct 13 near the air outlet 14, the condenser 11 is located between the evaporator 6 and the fan device, and an air guide device is fixed between the evaporator 6 and the condenser 11; the air guide device is provided with an openable or closable air guide 21, when the air guide 21 is closed, liquid water condensed on the outer surface of the evaporator 6 can frost; when the air guide 21 is opened, external air enters the air duct 13 through the air inlet 5, and flows through the outer surface of the evaporator 6, so that the frost on the outer surface of the evaporator 6 melts into condensed water and takes away the dirt. In this way, when the dehumidification is working normally, the air guide port 21 is opened and the fan device is running, so that the air duct 13 forms a negative pressure to generate suction, so that the external gas is discharged through the air inlet 5, the evaporator 6, the air guide port 21, the condenser 11, and the air outlet 14; when the self-cleaning is working, the air guide port 21 is closed, the air flow between the evaporator 6 and the condenser 11 is blocked by the closed air guide port 21, and the evaporator 6 continues to cool down during operation. When the low temperature generated by the evaporator 6 during operation cannot be completely taken away by the air flow, the liquid water condensed on the outer surface of the evaporator 6 can be frosted. When the air guide port 21 is opened again, the air flow between the evaporator 6 and the condenser 11 can be conducted through the opened air guide port 21 and is in a normal dehumidification state. At this time, the frost on the outer surface of the evaporator 6 can melt into condensed water and take away the dirt, thereby realizing the self-cleaning function. It has a simple structure, low cost and high cleaning efficiency.

[0030] In practical applications, the fins of the evaporator 6 are in the form of compact multi-layer sheets. When the dehumidifier is running, external gas enters the air duct 13 through the air inlet 5 and flows through the fins of the evaporator 6 .

[0031] In this embodiment, the air guide device includes a bracket 8, a fan blade 10 and a driving assembly, an air guide port 21 is formed on the bracket 8, the fan blade 10 is movably mounted on the bracket 8, and the driving assembly is used to drive the fan blade 10 to rotate to open or close the air guide port 21. In this arrangement, the fan blade 10 is driven to rotate by the driving assembly to open or close the air guide port 21, and the structure is simple.

[0032] In this embodiment, the bracket 8 is provided with a grille 81, and there are a plurality of fan blades 10, which are hinged side by side on the side of the grille 81 away from the evaporator 6, and the plurality of fan blades 10 are connected by a connecting rod 9, and the driving assembly includes a stepping motor 7, and the output end of the stepping motor 7 is fixedly connected to the fan blades 10. In this arrangement, the fan blades 10 are driven to rotate forward and reversely by the stepping motor 7, and since the plurality of fan blades 10 are driven by the connecting rod 9, the plurality of fan blades 10 can rotate synchronously, and when the fan blades 10 rotate to expand relative to the grille 81, the air guide port 21 is in an open state, and when the fan blades 10 rotate to close relative to the grille 81, the air guide port 21 is in a closed state.

[0033] It should be noted that the plurality of fan blades 10 are hinged side by side on the side of the grille 81 away from the evaporator 6, so that the fan blades 10 and the evaporator 6 are separated by a certain distance through the grille 81, which can effectively prevent frost on the outer surface of the evaporator 6 from sticking to the fan blades 10, thereby ensuring that the fan blades 10 can rotate back and forth relative to the grille 81.

[0034] In this embodiment, a normally open air guide port 22 is formed in the gap between the bracket 8 and the housing, and the air intake of the air guide port 22 is less than the air intake of the air guide port 1 21. In this way, when the air guide port 1 21 is closed, the condenser 11 can operate normally under the effect of the normally open air guide port 22, thereby continuously cooling the evaporator 6 during operation.

[0035] In actual applications, the airflow passing through the second air guide port 22 cannot completely carry away the low temperature generated by the evaporator 6 .

[0036] In this embodiment, the evaporator 6 and the condenser 11 are respectively provided with a fixing side plate 12 for fixing the bracket 8. This arrangement is convenient for assembly, and the bracket 8 is fixed between the evaporator 6 and the condenser 11 through the two fixing side plates 12 on the evaporator 6 and the condenser 11.

[0037] In this embodiment, the fan device includes a centrifugal fan wheel 15 and a motor 16, the centrifugal fan wheel 15 is connected to the output end of the motor 16, and the motor 16 is used to drive the centrifugal fan wheel 15 to rotate. In this arrangement, the centrifugal fan wheel 15 is driven to rotate by the motor 16, so that the air duct 13 forms a negative pressure to generate suction, so that the external gas enters the air duct 13 through the air inlet 5.

[0038] In this embodiment, a compressor 18 is provided in the shell, and the compressor 18 is connected to the condenser 11 through a pipeline, and the condenser 11 is connected to the evaporator 6 through a pipeline, and the evaporator 6 is connected to the compressor 18 through a pipeline. In this way, the compressor 18, the condenser 11, and the evaporator 6 cooperate to form a refrigeration assembly. More specifically, the high-temperature and high-pressure refrigerant gas from the compressor 18 enters the condenser 11 for heat exchange, so that the gas state is changed into a liquid state to release heat. At this time, the condenser 11 will generate high temperature, and through the capillary throttling process, a low-temperature and low-pressure refrigerant liquid is generated. After entering the evaporator 6, heat exchange is performed, and the surrounding environment heat is absorbed, thereby changing from a liquid state to a gas state and reducing the temperature. At this time, the evaporator 6 will generate a low temperature, and the heat is discharged through the air duct 13 to complete the dehumidification work.

[0039] In this embodiment, a water receiving pan 17 and a water tank 20 are provided in the housing, the water receiving pan 17 is provided corresponding to the evaporator 6, and the water tank 20 is provided corresponding to the water receiving pan 17. In this arrangement, the condensed water and dirt after the frost on the outer surface of the evaporator 6 is melted are collected by the water receiving pan 17 and then transferred to the water tank 20. More specifically, the water receiving pan 17 is located below the evaporator 6, and the drainage hole of the water receiving pan 17 is connected to the water inlet of the water tank 20 through a pipeline. When the melted condensed water and dirt fall into the water receiving pan 17, they are discharged through the drainage hole to the water tank 20 for storage.

[0040] In this embodiment, the housing includes a front plate 1, a rear plate 2, a top cover 4 and a bottom plate 19 which are fixedly connected, an air inlet 5 is arranged on the rear plate 2, and an air outlet 14 is arranged on the top cover 4; a grille 2 3 is arranged on the rear plate 2 corresponding to the air inlet 5, and a grille 3 41 is arranged on the top cover 4 corresponding to the air outlet 14. In this way, the air duct 13 is designed at the upper part of the dehumidifier, and the air duct 13 is an L-shaped structure, and its air outlet 14 is arranged on the top cover 4, so the dehumidification effect is better; the design of the grille 2 3 and the grille 3 41 can play a filtering function on the gas; more specifically, it can prevent garbage from entering the dehumidifier.

[0041] In this embodiment, a control panel is provided on the front plate 1, and a movable roller is provided on the chassis 19. This arrangement is convenient to operate, and the dehumidifier can have a mobile dehumidification function, and the dehumidification effect is better.

[0042] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A dehumidifier, comprising a housing, characterized in that: The shell is provided with an air inlet and an air outlet, an air duct is formed between the air inlet and the air outlet, an evaporator, a condenser and a fan device are installed in the air duct, and an air guide device is fixed between the evaporator and the condenser; The air guide device is provided with an air guide port 1 which can be opened or closed. When the air guide port 1 is closed, liquid water condensed on the outer surface of the evaporator can frost; when the air guide port 1 is opened, external air enters the air duct through the air inlet and flows through the outer surface of the evaporator, so that the frost on the outer surface of the evaporator melts into condensed water and takes away the dirt.

2. A dehumidifier according to claim 1, characterized in that: The air guide device includes a bracket, fan blades and a driving component. An air guide port 1 is formed on the bracket. The fan blades are movably mounted on the bracket. The driving component is used to drive the fan blades to rotate to open or close the air guide port 1.

3. A dehumidifier according to claim 2, characterized in that: A grille is provided on the bracket, and there are multiple fan blades. The multiple fan blades are hinged side by side on a side of the grille away from the evaporator, and the multiple fan blades are connected by a connecting rod transmission. The driving component includes a stepper motor, and the output end of the stepper motor is fixedly connected to the fan blades.

4. A dehumidifier according to claim 2, characterized in that: A normally open air guide port 2 is formed in the gap between the bracket and the shell, and the air intake volume of the air guide port 2 is smaller than the air intake volume of the air guide port 1.

5. A dehumidifier according to claim 2, characterized in that: The evaporator and the condenser are respectively provided with fixing side plates for fixing the bracket.

6. A dehumidifier according to claim 2, characterized in that: The fan device comprises a centrifugal wind wheel and a motor. The centrifugal wind wheel is connected to the output end of the motor, and the motor is used to drive the centrifugal wind wheel to rotate.

7. A dehumidifier according to claim 2, characterized in that: A compressor is arranged in the shell, the compressor is connected to the condenser through a pipeline, the condenser is connected to the evaporator through a pipeline, and the evaporator is connected to the compressor through a pipeline.

8. A dehumidifier according to claim 2, characterized in that: A water receiving tray and a water tank are arranged in the shell. The water receiving tray is arranged corresponding to the evaporator, and the water tank is arranged corresponding to the water receiving tray.

9. A dehumidifier according to claim 2, characterized in that: The shell includes a front plate, a rear plate, a top cover and a chassis which are fixedly connected, the air inlet is arranged on the rear plate, and the air outlet is arranged on the top cover; a second grille is arranged corresponding to the air inlet on the rear plate, and a third grille is arranged corresponding to the air outlet on the top cover.

10. A dehumidifier according to claim 9, characterized in that: The front plate is provided with a control panel, and the chassis is provided with moving rollers.

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