Dehumidifier

Abstract

The utility model relates to a dehumidifier which is characterized in that the dehumidifier comprises a machine shell, and a compressor, a heat exchanger, a fan, a water collecting tray and a water collecting tank are arranged in the machine shell; a first water pump is communicated between the water collecting tank and the water collecting tray, and the water collecting tank is communicated with a water pipe externally connected with a second water pump; a first liquid level sensor is arranged in the water collecting tray; and a second liquid level sensor is arranged in the water collecting tank. The dehumidifier is not only internally provided with the water collecting tray used for receiving condensate water generated by the heat exchanger, but also provided with the water collecting tank, the water collecting tank is used for continuously and uninterruptedly receiving the condensate water in the water collecting tray, and when the water collecting tank is full of water, the condensate water can be pumped out through the water passing pipe and the second water pump for other utilization; condensate water can be recycled to a great extent, utilization of water resources is improved, and waste of the water resources is reduced; meanwhile, the automatic process that dehumidification work is continuous and condensate water can be recycled can be formed.

Description

Technical Field

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

[0002] The existing dehumidifier has a water storage tank under the evaporator. When working, the dehumidifier condenses the moisture in the air through the evaporator and collects it in the water storage tank, which is then directly poured out manually or led out by a simple drain pipe. For small household dehumidifiers, since the water storage tank is specifically a detachable structure, the water in the water storage tank can be directly poured out. However, there are still some large dehumidifiers whose water storage tanks are non-detachable structures or are very troublesome and difficult to disassemble, such as industrial dehumidifiers, and dehumidifiers for buses and coaches. If you want to drain the water in the water storage tank, you need an additional drainage structure, such as a simple drain pipe. However, every time the dehumidifier is full of water, it is necessary to pour the water manually. If the water is not poured in time, the dehumidifier will not be able to continue to perform the dehumidification function.

[0003] Therefore, in order to solve this problem, the prior art authorization announcement number CN101520214B discloses an automatic water level drainage dehumidifier and its drainage method, which is controlled by an electromagnetic water pump and avoids the previous phenomenon of stopping working when the water is full. This dehumidifier can run continuously without stopping. However, the above-mentioned dehumidifier will directly drain the condensed water, resulting in that the condensed water cannot be recycled, which causes a waste of water resources to a certain extent, and there is room for improvement. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, according to one aspect of the utility model, a dehumidifier is provided.

[0005] A dehumidifier, comprising:

[0006] A casing, wherein a compressor, a heat exchanger, a fan, a water collecting pan and a water collecting tank are arranged in the casing; a first water pump is connected between the water collecting tank and the water collecting pan, and a water pipe for externally connecting a second water pump is connected to the water collecting tank;

[0007] The water collecting tray is provided with a first liquid level sensor for detecting whether the water in the water collecting tray is at a high liquid level; if it is detected that the water in the water collecting tray is at a high liquid level, the first water pump is started to pump the water in the water collecting tray into the water collecting tank; otherwise, the first water pump is not started;

[0008] The water collecting tank is provided with a second liquid level sensor for detecting whether the water in the water collecting tank is at a high liquid level or a low liquid level; if it is detected that the water in the water collecting tank is at a high liquid level, the second water pump is started and the entire dehumidifier is stopped; if it is detected that the water in the water collecting tank is at a low liquid level, the second water pump is stopped and the dehumidifier is started.

[0009] In one embodiment of the utility model, the first liquid level sensor includes a first magnetic float and a first magnetic switch used in conjunction with the first float, and the first magnetic switch is arranged at a high liquid level of the water collecting tray;

[0010] If the water in the water collecting tray is at a high liquid level, the first float is close to the first magnetic switch, the first magnetic switch outputs an on signal, and the controller in the dehumidifier turns on the first water pump according to the on signal of the first magnetic switch.

[0011] In one embodiment of the utility model, the inner wall of the water collecting tray is provided with a guide cavity, the first float is arranged in the guide cavity and can move vertically in the guide cavity; the first magnetic switch is arranged on the outer wall of the water collecting tray.

[0012] In an embodiment of the present invention, the first magnetic switch is a reed switch or a Hall switch.

[0013] In one embodiment of the utility model, the second liquid level sensor includes a second float driven by magnetism, a second magnetic switch used in conjunction with the second float, a third float with magnetism, and a third magnetic switch used in conjunction with the third float; the second magnetic switch is arranged at a high liquid level of the water collecting tank, and the third magnetic switch is arranged at a low liquid level of the water collecting tank;

[0014] If the water in the water collecting tank is at a high liquid level, the second float will be close to the second magnetic switch, so that the second magnetic switch outputs an on signal, and the controller in the dehumidifier turns on the second water pump and shuts down the entire dehumidifier according to the on signal of the second magnetic switch;

[0015] When the water in the water collecting tank is at a low liquid level, the third float will be close to the third magnetic switch, so that the third magnetic switch outputs a closing signal, and the controller in the dehumidifier turns off the second water pump and starts the dehumidifier according to the closing signal of the third magnetic switch.

[0016] In one embodiment of the utility model, the second liquid level sensor also includes a guide tube, the second magnetic switch and the third magnetic switch are arranged in the guide tube from top to bottom, and the second float and the third float are sleeved outside the guide tube from top to bottom and can move vertically.

[0017] In one embodiment of the utility model, two second limiting rings and two third limiting rings are fixedly arranged on the outer side of the guide tube, the second float is arranged between the two second limiting rings, and the third float is arranged between the two third limiting rings;

[0018] The distance between the two second limiting rings is greater than the height of the second float itself, and the distance between the two third limiting rings is greater than the height of the third float itself.

[0019] In one embodiment of the present invention, the second magnetic switch is a reed switch or a Hall switch; and / or the third magnetic switch is a reed switch or a Hall switch.

[0020] In one embodiment of the utility model, the heat exchanger and the fan are horizontally spaced apart along the width direction of the casing, the water collecting tray is arranged at the bottom of the heat exchanger, and the water collecting tank, the compressor and the heat exchanger are horizontally spaced apart in sequence along the length direction of the casing.

[0021] In one embodiment of the present invention, the capacity of the water collecting tank is three times or more than the capacity of the water collecting tray.

[0022] In summary, the dehumidifier provided by the utility model has the following technical effects:

[0023] In order to better recycle the condensed water, the dehumidifier is not only provided with a water collecting pan for collecting the condensed water generated by the heat exchanger, but also with a water collecting tank. The water collecting tank is used to continuously and uninterruptedly receive the condensed water in the water collecting pan. When the water in the water collecting tank is full, the condensed water can be pumped out through the water pipe and the second water pump for other uses. The condensed water can be recycled to a large extent, thereby improving the utilization of water resources and reducing the waste of water resources. At the same time, it can also form an automated process in which the dehumidification work is continuous and the condensed water can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a dehumidifier according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the internal workpieces in the dehumidifier of the embodiment of the utility model;

[0026] Figure 3 It is a schematic structural diagram of the assembly of a water collecting tray, a heat exchanger and a first water pump in a dehumidifier according to an embodiment of the utility model;

[0027] Figure 4 for Figure 3 Schematic diagram of the structure at A in FIG.

[0028] Figure 5 A cross-sectional view of the internal structure of a water collecting box in a dehumidifier according to an embodiment of the utility model;

[0029] Figures: 1- casing, 2- compressor, 3- heat exchanger, 4- fan, 5- water collecting tray, 51- first liquid level sensor, 52- first float, 53- first magnetic switch, 54- guide chamber, 6- water collecting tank, 61- second liquid level sensor, 62- second float, 63- third float, 64- guide tube, 65- second limiting ring, 66- third limiting ring, 7- first water pump, 8- water pipe. DETAILED DESCRIPTION

[0030] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] The embodiment of the utility model discloses a dehumidifier, referring to Figure 1-Figure 5 The dehumidifier comprises a casing 1.

[0034] A compressor 2, a heat exchanger 3, a fan 4, a water collecting pan 5 and a water collecting tank 6 are arranged in the casing 1; a first water pump 7 is connected between the water collecting tank 6 and the water collecting pan 5, and a water pipe 8 for connecting an external second water pump is connected to the water collecting tank 6.

[0035] A first liquid level sensor 51 is provided in the water collecting pan 5 for detecting whether the water in the water collecting pan 5 is at a high liquid level; if it is detected that the water in the water collecting pan 5 is at a high liquid level, the first water pump 7 is started to pump the water in the water collecting pan 5 into the water collecting tank 6; otherwise, the first water pump 7 is not started.

[0036] A second liquid level sensor 61 is provided in the water collecting tank 6 for detecting whether the water in the water collecting tank 6 is at a high liquid level or a low liquid level; if it is detected that the water in the water collecting tank 6 is at a high liquid level, the second water pump is started and the entire dehumidifier is stopped; if it is detected that the water in the water collecting tank 6 is at a low liquid level, the second water pump is stopped and the dehumidifier is started.

[0037] In specific use, in order to better recycle the condensed water, the dehumidifier is not only provided with a water collecting pan 5 for receiving the condensed water generated by the heat exchanger 3, but also provided with a water collecting tank 6. The water collecting tank 6 is used to continuously and uninterruptedly receive the condensed water in the water collecting pan 5. When the water in the water collecting tank 6 is full, the condensed water can be pumped out through the water pipe 8 and the second water pump for other uses. The condensed water can be recycled to a large extent, the utilization of water resources is improved, and the waste of water resources is reduced. The specific principle of recycling the condensed water is as follows:

[0038] The dehumidification principle of the compressor 2, heat exchanger 3, fan 4 and water collecting pan 5 in the dehumidifier is that the fan 4 draws humid air into the dehumidifier, passes through the heat exchanger 3, and the moisture in the air condenses into water droplets, which are then discharged out of the machine as dry air. This cycle reduces the indoor humidity, and the condensed water droplets will drip into the water collecting pan 5.

[0039] On the one hand, the water level in the water collecting pan 5 is specifically detected by the first liquid level sensor 51. When used specifically, the water level when the water collecting pan 5 is full of water can be specifically set as the high liquid level, which can be set according to specific working conditions. When used specifically, when the first liquid level sensor 51 detects that the water in the water collecting pan 5 is at a high liquid level, it means that the water in the water collecting pan 5 is full. At this time, the first water pump 7 will start to pump the water in the water collecting pan 5 into the water collecting tank 6 for storage; when the first liquid level sensor 51 detects that the water in the water collecting pan 5 is not at a high liquid level, the first water pump 7 stops working and no longer pumps water, and the water is pumped into the water collecting tank 6 in a cycle. It can be seen that in this process, the condensed water generated will drip onto the water collecting pan 5 and will be continuously and uninterruptedly transported to the water collecting tank 6.

[0040] On the other hand, the water level of the water collecting tank 6 is specifically detected by the second liquid level sensor 61. When in use, the water level when the water collecting tank 6 is full of water can be specifically set as the high liquid level, and the water level below the high liquid level in the water collecting tank 6 can be specifically set as the low liquid level. It can also be set according to specific working conditions. For example, the depth of the remaining water level in the water collecting tank 6 can be specifically one centimeter, two centimeters or three centimeters. When in use, when the second liquid level sensor 61 detects that the water in the water collecting tank 6 is at a high liquid level, it means that the water in the water collecting tank 6 is full. At this time, the second water pump will start, and the dehumidifier will stop working and no longer perform dehumidification work to prevent the condensed water generated by continued dehumidification from escaping from the water collecting tank 6 and causing a short circuit problem of electrical components. In addition, after the second water pump is started, the water stored in the water collecting tank 6 will be pumped to other workstations that need to be used, for example, as a coolant for heat dissipation of other components.

[0041] Furthermore, when the water level in the water collecting tank 6 drops to a low level, that is, when the second liquid level sensor 61 detects that the water in the water collecting tank 6 is at a low level, the second water pump stops working; at the same time, the dehumidifier restarts to dehumidify. It can be seen that this series of operations does not require manual work, and all are processed automatically. With such a configuration, when the water collecting pan 5 cannot be disassembled or is inconvenient to disassemble, an additional water collecting tank 6 can be set up to continuously receive and store the condensed water in the water collecting pan 5, so that the condensed water can be extracted and recycled later, so as to improve the utilization of water resources and reduce the waste of water resources. Moreover, the condensed water can be directly extracted from the water collecting tank 6 without disassembling the water collecting tank 6, which improves the convenience of water resource utilization. At the same time, in the entire dehumidification and pumping process, there is no need for direct human participation. Instead, the water collecting tray 5 and the water collecting tank 6 are automatically pumped out by detecting the low liquid level or high liquid level respectively detected by the pre-set first liquid level sensor 51 and the second liquid level sensor 61; and the dehumidifier will also adjust its own working state according to the specific water level in the water collecting tank 6. The dehumidification work will be stopped when the water in the water collecting tank 6 is full to prevent water from escaping; the dehumidification work will continue when the water level in the water collecting tank 6 is at a low level, so as to form an automated process in which the dehumidification work is continuous and the condensed water can be recycled.

[0042] Optionally, the capacity of the water collecting tank 6 is three times or more than the capacity of the water collecting pan 5. In this specific embodiment, the capacity of the water collecting tank 6 is made larger than the capacity of the water collecting pan 5, which can improve the storage capacity of the water collecting tank 6 for condensed water, store more condensed water, and allow more condensed water to be recycled, further reducing the waste of water resources.

[0043] Optionally, the heat exchanger 3 and the fan 4 are arranged horizontally and spaced along the width direction of the casing 1, the water collecting tray 5 is arranged at the bottom of the heat exchanger 3, and the water collecting box 6, the compressor 2 and the heat exchanger 3 are arranged horizontally and spaced in sequence along the length direction of the casing 1. In this specific embodiment, such a position arrangement can greatly reduce the volume of the dehumidifier; and, the heat exchanger 3 and the compressor 2 of the existing dehumidifier are usually placed up and down, while the compressor 2 and the heat exchanger 3 of the dehumidifier are arranged on the same horizontal plane, which can effectively reduce the materials used for assembly and reduce the manufacturing cost.

[0044] Optionally, the first liquid level sensor 51 includes a first magnetic float 52 and a first magnetic switch 53 used in conjunction with the first float 52. The first magnetic switch 53 is set at a high liquid level of the water collecting pan 5. The first float 52 can rise and fall with the water level of the water collecting pan 5. If the water in the water collecting pan 5 is at a high liquid level, the first float 52 will approach the first magnetic switch 53, and the first magnetic switch 53 will output an on signal. The controller in the dehumidifier will turn on the first water pump 7 according to the on signal of the first magnetic switch 53. In addition, if the first float 52 is away from the first magnetic switch 53, the first magnetic switch 53 will output a off signal, and the controller in the dehumidifier will stop the first water pump 7 according to the off signal of the first magnetic switch 53.

[0045] In this specific embodiment, the specific structure of the first liquid level sensor 51 includes a first float 52 and a first magnetic switch 53. The first liquid level sensor 51 can specifically detect whether the water in the water collecting tray 5 is at a high liquid level through the first float 52, and the first magnetic switch 53 is an electric switch operated by a magnetic field, which can specifically be a reed switch or a Hall switch.

[0046] One embodiment is described with a reed switch, wherein the working principle of the reed switch is as follows: when an external magnetic field approaches, two reeds are magnetized to generate magnetic fields of different polarities. When the magnetic field strength is sufficient, the two reeds will be attracted together, so that the reed switch is turned on; when the external magnetic field moves away, the reeds are gradually demagnetized and disconnected, and the reed switch is turned off. Therefore, this characteristic of the reed switch can be used to cooperate with the specific water level of the first float 52 in the water collection tray 5, and then the working condition of the first water pump 7 can be specifically controlled by the controller.

[0047] For example, when the first float 52 is at a high liquid level in the water collecting tray 5, the reed switch is turned on and the first water pump 7 is started by the controller; otherwise, the reed switch is turned off and the first water pump 7 is stopped by the controller.

[0048] It should be noted that, in actual application, as the water level in the water collecting tray 5 rises, the first float 52 will also move upward with the increase of the water level, until the first float 52 moves up to the high liquid level, so that the reed switch is turned on. The reed switch is electrically connected to the controller, which can be a single-chip microcomputer. The controller receives the high liquid level information of the reed switch, and then turns on the first water pump 7 to pump the water in the water collecting tray 5 into the water collecting tank 6, which can well control the water level in the water collecting tray 5 and prevent the water in the water collecting tray 5 from escaping. In addition, as the water level in the water collecting tray 5 drops, the first float 52 will also move downward with the drop of the water level, until the first float 52 moves down away from the high liquid level, so that the reed switch is disconnected, and the controller receives the closing information of the reed switch, and turns off the first water pump 7 according to the closing information of the reed switch, so as to realize the automatic control of the water level in the water collecting tray 5. Of course, in some other embodiments, the first water pump 7 can also be manually turned off.

[0049] Another embodiment is illustrated by a Hall switch. The specific sensing method of the Hall switch can be that when one magnetic pole of the first float 52 approaches it, a low-level signal is output, and when the magnetic pole of the first float 52 leaves it, a high-level signal is output. The specific working principle can be, for example, when the first float 52 is at a high liquid level in the water collecting tray 5, the Hall switch outputs a low-level signal and controls the first water pump 7 to start through the controller; otherwise, the Hall switch outputs a high-level signal and controls the first water pump 7 to stop working through the controller.

[0050] In other optional embodiments, the first liquid level sensor 51 is at least one of a float liquid level sensor, a photoelectric liquid level sensor, a capacitive liquid level sensor, an ultrasonic liquid level sensor or a radar sensor, which can also control the water level in the water collecting tray 5 and prevent the water in the water collecting tray 5 from escaping.

[0051] Optionally, the inner wall of the water collecting tray 5 is provided with a guide cavity 54, the first float 52 is provided in the guide cavity 54 and can move vertically in the guide cavity 54; the first magnetic switch 53 is provided on the outer wall of the water collecting tray 5. In this specific embodiment, the guide cavity 54 is provided on the inner wall of the water collecting tray 5 to prevent the first float 52 from moving randomly in the water collecting tray 5, but can move up and down in the guide cavity 54 as the water level rises and falls, so as to better cooperate with the first magnetic switch 53 and more accurately detect the water level of the water collecting tray 5.

[0052] Optionally, the first magnetic switch 53 is disposed on an outer wall of the water collecting tray 5 relative to the guide cavity 54 , which can prevent the first float 52 from escaping from the sensing range of the first magnetic switch 53 .

[0053] Optionally, the second liquid level sensor 61 includes a second magnetic float 62, a second magnetic switch used in conjunction with the second float 62, a third magnetic float 63, and a third magnetic switch used in conjunction with the third float 63; the second magnetic switch is set at a high liquid level in the water collecting tank 6, and the third magnetic switch is set at a low liquid level in the water collecting tank 6; the second float 62 and the third float 63 can rise and fall with the water level in the water collecting tray 5; if the water in the water collecting tank 6 is at a high liquid level, the second float 62 will be close to the second magnetic switch, so that the second magnetic switch outputs an on signal, and the controller in the dehumidifier turns on the second water pump and shuts down the entire dehumidifier according to the on signal of the second magnetic switch.

[0054] When the water in the water collecting tanks 6 is at a low liquid level, the third float 63 will be close to the third magnetic switch, so that the third magnetic switch outputs a closing signal, and the controller in the dehumidifier turns off the second water pump and starts the dehumidifier according to the closing signal of the third magnetic switch.

[0055] In this specific embodiment, the second liquid level sensor 61 can be specifically a multi-point float liquid level sensor, that is, the second liquid level sensor 61 has two specific detection locations, where the water in the water collecting tank 6 is at a high liquid level and a low liquid level. The second float 62 and the second magnetic switch can be specifically set to detect whether the water in the water collecting tank 6 is at a high liquid level, and the third float 63 and the third magnetic switch can detect whether the water in the water collecting tank 6 is at a low liquid level.

[0056] The second magnetic switch and the third magnetic switch may also be specifically a reed switch or a Hall switch.

[0057] Taking the second magnetic switch and the third magnetic switch as reed switches as an example, for example, in actual application, as the water level in the water collecting tank 6 rises, it will reach a high liquid level. When the second float 62 approaches the second magnetic switch, the magnetic force generated by the second float 62 will pass through the non-magnetic wall of the second float 62 and the guide tube 64, so that the contact of the second magnetic switch will be attracted. Since the second magnetic switch will be electrically connected to the controller, the controller can be a single-chip microcomputer. The controller will receive the high liquid level information of the second magnetic switch, and then start the second water pump to pump the water in the water collecting tank 6. At the same time, the controller will also control the dehumidifier to stop working to prevent the water in the water collecting tank 6 from escaping.

[0058] It should be noted that as the water level in the water collecting tank 6 drops, the second float 62 will move away from the second magnetic switch, causing the second magnetic switch to be disconnected. At this time, the second magnetic switch is disconnected and no corresponding operation signal is specifically set in the controller, so the second water pump will continue to work.

[0059] Then, as the water level in the water collecting tank 6 drops to a low liquid level, the third float 63 will approach the third magnetic switch, and the magnetic force generated by the third float 63 will penetrate the non-magnetic wall of the third float 63 and the guide tube 64, so that the contacts of the third magnetic switch will be attracted. Since the third magnetic switch is electrically connected to the controller, which can be a single-chip microcomputer, the controller will receive the low liquid level information of the third magnetic switch, and then stop the second water pump. At the same time, the controller will also control the dehumidifier to start up and restart the dehumidification work, so as to form an automated process in which the dehumidification work is continuous and the condensed water can be recycled.

[0060] It should be noted that as the water level in the water collecting tank 6 rises, the third float 63 will move away from the third magnetic switch, causing the third magnetic switch to be disconnected. At this time, the disconnection of the third magnetic switch does not specifically set a corresponding operation signal in the controller, so the second water pump will not start.

[0061] Optionally, the second liquid level sensor 61 further includes a guide tube 64, the second magnetic switch and the third magnetic switch are arranged in the guide tube 64 from top to bottom, and the second float 62 and the third float 63 are sleeved outside the guide tube 64 from top to bottom and can move vertically. In this specific embodiment, the guide tube 64 is specifically provided to prevent the second float 62 and the third float 63 from moving randomly in the water collecting tank 6, but can move up and down in the guide tube 64 as the water level rises and falls, so as to better cooperate with the second magnetic switch and the third magnetic switch respectively corresponding to each other, and more accurately detect the water level in the water collecting tank 6.

[0062] Optionally, two second limiting rings 65 and two third limiting rings 66 are fixedly arranged on the outer side of the guide tube 64, the second float 62 is arranged between the two second limiting rings 65, and the third float 63 is arranged between the two third limiting rings 66; the distance between the two second limiting rings 65 is greater than the height of the second float 62 itself, and the distance between the two third limiting rings 66 is greater than the height of the third float 63 itself. In this specific embodiment, the second float 62 will be limited between the two second limiting rings 65, and the path of the second float 62 moving up and down can be effectively controlled to ensure that when the water in the water collecting tank 6 is at a high liquid level, the second float 62 can cooperate with the second magnetic switch; at the same time, the third float 63 will also be limited between the two third limiting rings 66, and the path of the third float 63 moving up and down can be effectively controlled to ensure that when the water in the water collecting tank 6 is at a low liquid level, the third float 63 can cooperate with the third magnetic switch. It can be seen that this is equivalent to ensuring that the second float 62 can be used in conjunction with the second magnetic switch, and ensuring that the third float 63 can be used in conjunction with the third magnetic switch.

[0063] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A dehumidifier, characterized in that: include: A casing (1), wherein a compressor (2), a heat exchanger (3), a fan (4), a water collecting pan (5) and a water collecting tank (6) are arranged in the casing (1); a first water pump (7) is connected between the water collecting tank (6) and the water collecting pan (5), and a water pipe (8) for externally connecting a second water pump is connected to the water collecting tank (6); The water collecting tray (5) is provided with a first liquid level sensor (51) for detecting whether the water in the water collecting tray (5) is at a high liquid level; if it is detected that the water in the water collecting tray (5) is at a high liquid level, the first water pump (7) is started to pump the water in the water collecting tray (5) into the water collecting tank (6); otherwise, the first water pump (7) is not started; The water collecting tank (6) is provided with a second liquid level sensor (61) for detecting whether the water in the water collecting tank (6) is at a high liquid level or a low liquid level; if it is detected that the water in the water collecting tank (6) is at a high liquid level, the second water pump is started and the entire dehumidifier is stopped; if it is detected that the water in the water collecting tank (6) is at a low liquid level, the second water pump is stopped and the dehumidifier is started.

2. A dehumidifier according to claim 1, characterized in that: The first liquid level sensor (51) comprises a first magnetic float (52) and a first magnetic switch (53) used in conjunction with the first float (52); the first magnetic switch (53) is arranged at a high liquid level of the water collecting tray (5); If the water in the water collecting tray (5) is at a high liquid level, the first float (52) is close to the first magnetic switch (53), the first magnetic switch (53) outputs an on signal, and the controller in the dehumidifier turns on the first water pump (7) according to the on signal of the first magnetic switch (53).

3. A dehumidifier according to claim 2, characterized in that: The inner wall of the water collecting tray (5) is provided with a guide cavity (54), the first float (52) is arranged in the guide cavity (54) and can move vertically in the guide cavity (54); the first magnetic switch (53) is arranged on the outer wall of the water collecting tray (5).

4. A dehumidifier according to claim 2, characterized in that: The first magnetic switch (53) is a reed switch or a Hall switch.

5. A dehumidifier according to claim 1, characterized in that: The second liquid level sensor (61) comprises a second magnetic float (62), a second magnetic switch used in conjunction with the second float (62), a third magnetic float (63), and a third magnetic switch used in conjunction with the third float (63); the second magnetic switch is arranged at a high liquid level of the water collecting tank (6), and the third magnetic switch is arranged at a low liquid level of the water collecting tank (6); If the water in the water collecting tank (6) is at a high liquid level, the second float (62) will be close to the second magnetic switch, so that the second magnetic switch outputs an on signal, and the controller in the dehumidifier turns on the second water pump and shuts down the entire dehumidifier according to the on signal of the second magnetic switch; When the water in the water collecting tank (6) is at a low liquid level, the third float (63) will be close to the third magnetic switch, so that the third magnetic switch outputs a closing signal, and the controller in the dehumidifier turns off the second water pump and starts the dehumidifier according to the closing signal of the third magnetic switch.

6. A dehumidifier according to claim 5, characterized in that: The second liquid level sensor (61) further comprises a guide tube (64), the second magnetic switch and the third magnetic switch are arranged in the guide tube (64) from top to bottom, and the second float (62) and the third float (63) are sleeved outside the guide tube (64) from top to bottom and can move vertically.

7. A dehumidifier according to claim 6, characterized in that: Two second limiting rings (65) and two third limiting rings (66) are fixedly arranged on the outside of the guide tube (64); the second float (62) is arranged between the two second limiting rings (65); and the third float (63) is arranged between the two third limiting rings (66); The distance between the two second limiting rings (65) is greater than the height of the second float (62) itself, and the distance between the two third limiting rings (66) is greater than the height of the third float (63) itself.

8. The dehumidifier according to claim 5, characterized in that: The second magnetic switch is a reed switch or a Hall switch; and / or the third magnetic switch is a reed switch or a Hall switch.

9. A dehumidifier according to any one of claims 1 to 8, characterized in that: The heat exchanger (3) and the fan (4) are horizontally spaced apart along the width direction of the casing (1); the water collecting tray (5) is arranged at the bottom of the heat exchanger (3); and the water collecting tank (6), the compressor (2) and the heat exchanger (3) are horizontally spaced apart in sequence along the length direction of the casing (1).

10. A dehumidifier according to any one of claims 1 to 8, characterized in that: The capacity of the water collecting tank (6) is three times or more than the capacity of the water collecting tray (5).

Images