Dehumidifier capable of preventing evaporator from frosting

Abstract

The utility model discloses a dehumidifier capable of preventing an evaporator from frosting, and belongs to the technical field of dehumidifiers. The dehumidifier mainly comprises a dehumidifier body, two partition plates are fixedly connected to the inner side wall of the dehumidifier body, an air duct is formed between the two partition plates, an air inlet is formed in one side of the dehumidifier body, an air outlet is formed in the other side of the dehumidifier body, and an air draft device is installed on the side, close to an air inlet groove, of the air duct. An evaporator and a condenser are fixedly mounted in the middle section of the air duct through mounting plates matched with bolts; the air inlet groove is formed in the portion, on one side of the condenser, of the air duct, air heated by the condenser is guided into the air outlet groove in one side of the evaporator again through the air return cavity, the regional temperature of the evaporator is monitored in cooperation with the temperature sensor, and therefore the heating efficiency of the evaporator is improved under the condition that a heating device is not additionally arranged. And the evaporator in the dehumidifier can be subjected to defrosting treatment, so that the effect of defrosting the dehumidifier is also achieved under the condition that the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of dehumidifiers, and in particular to a dehumidifier for preventing frost on an evaporator. Background Art

[0002] A dehumidifier primarily consists of a compressor, condenser, evaporator, fan, and water tank. Its working principle is as follows: First, the fan draws moist air into the machine. As it passes through the evaporator, the moisture in the air is cooled and condenses into water droplets, which then flow into the water tank. The cooled, dry air is then heated by the condenser before being discharged, reducing the indoor humidity. This entire process repeats continuously, achieving effective dehumidification.

[0003] After searching, the announcement number is CN217004725U, which discloses a low-temperature dehumidifier capable of rapid defrosting, including a combination mechanism, a sliding mechanism, a threaded mechanism, and a protective mechanism. The bottom of the combination mechanism is provided with a sliding mechanism, the upper middle portion of the combination mechanism is provided with a threaded mechanism, and the interior of the threaded mechanism is provided with a protective mechanism. The combination mechanism includes a body, a handle, a swing blade, a panel, and a roller. The handles are provided on the left and right sides of the upper body, the top of the body is provided with a swing blade, and the sides of the swing blade are provided with a panel, and the bottom of the body is provided with rollers. The low-temperature dehumidifier capable of rapid defrosting has a heating rod provided inside the grille plate. When the temperature sensor detects that the external temperature is lower than a predetermined value, the panel will send a command to the heating rod to start heating the heating rod to prevent frost from forming inside the filter plate cover and the air inlet. At the same time, a silica gel drying layer is provided at the bottom of the grille plate to dry the air entering the body again.

[0004] However, when the evaporator of an existing dehumidifier frosts at a low temperature, a method often adopted is to add a heating device inside the dehumidifier to increase the temperature of the evaporator to achieve the purpose of reducing frost. However, the added heating device is bound to increase the production cost of the dehumidifier.

[0005] Therefore, it is necessary to provide a dehumidifier that prevents evaporator frost to solve the above problems.

[0006] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Utility Model Content

[0007] The purpose of the present invention is to provide a dehumidifier that prevents frost on the evaporator, so as to solve the problems raised in the above background technology.

[0008] The technical solution adopted by this application to solve its technical problems is:

[0009] A dehumidifier for preventing frost on an evaporator comprises a dehumidifier body, two partitions being fixedly connected to the inner side walls of the dehumidifier body, an air duct being formed between the two partitions, an air inlet being provided on one side of the dehumidifier body, an air outlet being provided on the other side of the dehumidifier body, an exhaust device being installed on a side of the air duct close to an air inlet slot, and an evaporator and a condenser being fixedly installed on a middle section of the air duct via mounting plates and bolts.

[0010] An air guide assembly is slidably installed in the air duct located on one side of the condenser, and the air duct located above the evaporator and the condenser is integrally formed with a return air chamber. An air inlet slot is provided on a partition plate on one side of the condenser, and an air outlet slot is provided on a partition plate on one side of the evaporator. The air guide assembly slides at the air inlet slot position to connect or close the air duct, the return air chamber, and the air outlet slot.

[0011] Preferably, the air guide assembly includes a baffle, a movable plate and an electric cylinder. A clearance groove is provided on the bottom surface of the partition, and the baffle is placed in the clearance groove. One end of the movable plate is fixedly connected to the top surface of the baffle. A sliding groove is provided through the top surface of the partition, and the movable plate is slidably connected in the sliding groove. The other end of the baffle is fixedly installed with the telescopic shaft of the electric cylinder, and the electric cylinder is installed on the top surface of the partition.

[0012] Preferably, the air inlet slot is located in the give way slot, and the air inlet slot is communicated with the air cavity in the return air chamber and the air outlet slot.

[0013] Preferably, a temperature sensor for detecting temperature is installed on the side wall of the air duct located on one side of the evaporator.

[0014] Preferably, an air guide cover is installed at the air outlet slot, the top surface of the air guide cover extends through the bottom surface and one side wall to provide an air outlet cavity, the side wall of the air guide cover is fixedly connected to a mounting portion, a through hole is provided on the mounting portion, and the air guide cover is fixedly installed on the bottom surface of the partition through the through hole on the mounting portion and screws.

[0015] Preferably, the side of the air guide cover located at the air inlet is a guide arc surface structure.

[0016] The beneficial effects of this application are:

[0017] By opening an air inlet slot on the air duct on one side of the condenser, and guiding the air heated by the condenser into the air outlet slot on the side of the evaporator again through the return air chamber, and cooperating with a temperature sensor to monitor the regional temperature of the evaporator, the evaporator in the dehumidifier can be defrosted without adding a heating device, and by raising and lowering the air guide component, the connection and closure between the return air chamber and the air duct can be selected, thereby achieving the effect of defrosting the dehumidifier while reducing costs.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0020] In the attached figure:

[0021] Figure 1 This is an overall schematic diagram of a dehumidifier for preventing evaporator frost according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the dehumidifier of the present utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the return air chamber, partition, air guide assembly and air guide cover of the present invention;

[0024] Figure 4 This is a schematic structural diagram of the air guide assembly of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of the air guide cover of the present utility model.

[0026] Among them, the reference numerals in the figures are:

[0027] 1. Dehumidifier body; 2. Partition; 21. Air inlet slot; 22. Air outlet slot; 23. Gap slot;

[0028] 3. Return air chamber;

[0029] 4. Air guide assembly; 41. Baffle; 42. Moving plate; 43. Electric cylinder;

[0030] 5. Air outlet; 6. Air inlet; 7. Exhaust device; 8. Mounting plate; 9. Evaporator; 10. Condenser;

[0031] 11. Air guide cover; 111. Flow guide arc surface; 112. Mounting portion; 113. Air outlet cavity;

[0032] 12. Temperature sensor;

[0033] 13. Air duct. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0036] Please refer to Figure 1-5 The embodiments provided by the utility model have the advantages that the dehumidifier can prevent the evaporator from frosting, and the dehumidifier can be used in winter.

[0037] A dehumidifier capable of preventing an evaporator from frosting comprises a dehumidifier body 1, two partition plates 2 are fixedly connected to the inner side walls of the dehumidifier body 1 respectively, an air duct 13 is formed between the two partition plates 2, an air inlet 6 is formed in one side of the dehumidifier body 1, an air outlet 5 is formed in the other side of the dehumidifier body 1, an air extraction device 7 is installed on the side of the air duct 13 close to an air inlet groove 21, and an evaporator 9 and a condenser 10 are fixedly installed on the middle section of the air duct 13 through mounting plates 8 and cooperating bolts.

[0038] The indoor humid air is extracted into the air duct 13 through the air extraction device 7, the humid air is condensed by the evaporator 9, the water vapor in the humid air is condensed into small water droplets, and the small water droplets are collected and treated through a water tank and a pipeline, the moisture in the humid air is removed by the evaporator 9, and the humid air becomes dry air with low temperature, and then the dry air with low temperature is heated by the condenser 10 and is discharged from the dehumidifier through the air outlet 5, so that the indoor dehumidification treatment can be realized.

[0039] However, in this process, if the indoor temperature is low in winter, frost will occur on the fins of the evaporator 9 when the cold air is dehumidified on the evaporator 9, which will cause the air flow to be not smooth, and therefore, the evaporator 9 needs to be defrosted.

[0040] A wind guide assembly 4 is slidingly installed in the air duct 13 on the side of the condenser 10, a return air chamber 3 is integrally formed in the air duct 13 above the evaporator 9 and the condenser 10, an air inlet groove 21 is formed in the partition plate 2 on the side of the condenser 10, an air outlet groove 22 is formed in the partition plate 2 on the side of the evaporator 9, and the wind guide assembly 4 is slidingly positioned at the air inlet groove 21 to make the air duct 13 communicate with or be closed with the return air chamber 3 and the air outlet groove 22. The dry hot air passing through the condenser 10 is introduced into the air inlet of the evaporator 9 through the return air chamber 3, so that the fins of the evaporator 9 can be defrosted.

[0041] On this basis, it is necessary to determine whether the evaporator 9 is present frost phenomenon, the air duct 13 side wall located on one side of the evaporator 9 is provided with a temperature sensor 12 for detecting temperature, the temperature sensor 12 detects the temperature near the evaporator 9, and when the temperature is lower than-5°, the controller receives the temperature sensor 12 lower than-5°, and drives the air guide assembly 4 to open the air inlet slot 21 and make the hot air backflow to defrost.

[0042] Specifically, the air guide assembly 4 includes a baffle 41, a moving plate 42 and an electric cylinder 43, the bottom surface of the partition plate 2 is provided with a let slot 23, the baffle 41 is arranged in the let slot 23, one end of the moving plate 42 is fixedly connected with the top surface of the baffle 41, the top surface of the partition plate 2 is provided with a sliding groove, the moving plate 42 is slidingly connected in the sliding groove, the other end of the baffle 41 is fixedly installed with the telescopic shaft of the electric cylinder 43, and the electric cylinder 43 is installed on the top surface of the partition plate 2, wherein the air inlet slot 21 is located in the let slot 23, and the air inlet slot 21 is in communication with the air cavity in the air return chamber 3 and the air outlet slot 22.

[0043] The controller drives the telescopic shaft of the electric cylinder 43 to move up and down, so as to drive the moving plate 42 to slide up and down in the sliding groove, when the moving plate 42 moves downward, the baffle 41 moves downward in the air duct 13, so that the air inlet slot 21 leaks out of the baffle 41, the hot air flowing out of the condenser 10 enters the air cavity through the air inlet slot 21, and then is discharged through the air outlet slot 22, so as to defrost the surface of the evaporator 9.

[0044] Further, the air outlet slot 22 is provided with an air guide cover 11, the top surface of the air guide cover 11 is provided with an air outlet cavity 113 penetrating to the bottom surface and one side wall, the side wall of the air guide cover 11 is fixedly connected with a mounting portion 112, the mounting portion 112 is provided with a through hole, and the air guide cover 11 is fixedly installed on the bottom surface of the partition plate 2 through the through hole in the mounting portion 112 and screws, one side of the air guide cover 11 is provided with a flow guide arc surface 111, so as to change the air direction of the air outlet slot 22 through the air guide cover 11, effectively defrost the evaporator 9, and the flow guide arc surface 111 can not block the undehumidified air sucked from the outside.

[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dehumidifier for preventing evaporator frost, comprising a dehumidifier body (1), characterized in that: The inner side walls of the dehumidifier body (1) are respectively fixedly connected to two partitions (2), and an air duct (13) is formed between the two partitions (2). An air inlet (6) is provided on one side of the dehumidifier body (1), and an air outlet (5) is provided on the other side of the dehumidifier body (1). An exhaust device (7) is installed on the side of the air duct (13) close to the air inlet slot (21). An evaporator (9) and a condenser (10) are respectively fixedly installed in the middle section of the air duct (13) through a mounting plate (8) and bolts. An air guide assembly (4) is slidably installed in the air duct (13) located on one side of the condenser (10); a return air chamber (3) is integrally formed in the air duct (13) located above the evaporator (9) and the condenser (10); an air inlet slot (21) is provided on a partition plate (2) located on one side of the condenser (10); an air outlet slot (22) is provided on a partition plate (2) located on one side of the evaporator (9); the air guide assembly (4) slides at the position of the air inlet slot (21) to connect or close the air duct (13) to the return air chamber (3) and the air outlet slot (22).

2. A dehumidifier for preventing evaporator frost according to claim 1, characterized in that: The air guide assembly (4) includes a baffle (41), a movable plate (42) and an electric cylinder (43); a bottom surface of the partition (2) is provided with a clearance groove (23); the baffle (41) is placed in the clearance groove (23); one end of the movable plate (42) is fixedly connected to the top surface of the baffle (41); a sliding groove is provided through the top surface of the partition (2); the movable plate (42) is slidably connected in the sliding groove; the other end of the baffle (41) is fixedly installed with the telescopic shaft of the electric cylinder (43); and the electric cylinder (43) is installed on the top surface of the partition (2).

3. A dehumidifier for preventing evaporator frost according to claim 2, characterized in that: The air inlet slot (21) is located in the clearance slot (23), and the air inlet slot (21) is connected to the air cavity in the return air chamber (3) and the air outlet slot (22).

4. The dehumidifier for preventing evaporator frost according to claim 1, characterized in that: A temperature sensor (12) for detecting temperature is installed on the side wall of the air duct (13) located on one side of the evaporator (9).

5. The dehumidifier for preventing evaporator frost according to claim 1, characterized in that: An air guide cover (11) is installed at the air outlet slot (22), the top surface of the air guide cover (11) extends through the bottom surface and a side wall thereof is provided with an air outlet cavity (113), the side wall of the air guide cover (11) is fixedly connected with a mounting portion (112), a through hole is provided on the mounting portion (112), and the air guide cover (11) is fixedly installed on the bottom surface of the partition (2) through the through hole on the mounting portion (112) and screws.

6. The dehumidifier for preventing evaporator frost according to claim 5, characterized in that: The side of the air guide cover (11) located at the air inlet (6) is a flow guide arc surface (111).

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