Multi-air-duct system of dehumidifier

Abstract

The multi-air-duct system of the dehumidifier comprises a machine shell, an evaporator and a condenser, the evaporator and the condenser are installed on the machine shell, and a gap is formed between the evaporator and the condenser; the machine shell is provided with an air outlet channel and an air return channel which can be communicated with each other, the air return channel is communicated with a gap formed between the evaporator and the condenser, and the gap between the evaporator and the condenser is communicated with the air outlet channel through a flow guide air channel. The hot air path capable of conducting internal circulation is arranged in the dehumidifier, on one hand, the evaporator can be effectively prevented from frosting or the rapid defrosting effect can be achieved, the problem that the working time is short due to the fact that the shutdown time of the dehumidifier is too long is solved, and the dehumidification amount can be increased easily; and on the other hand, the hot air circulation air path can make contact with air entering the second air inlet channel in the working process, and cold and hot meet with each other, so that the condensation speed is increased, the condensation effect is improved, and the dehumidification amount can be increased as well.

Description

Technical Field

[0001] This application relates to the field of dehumidifier technology, and in particular to a multi-duct system for a dehumidifier. Background Technology

[0002] With the increasing demand for humidity control in modern industrial and residential environments, dehumidifiers, as an effective humidity regulation device, are widely used in homes, offices, warehouses, laboratories, and other places. The working principle of a dehumidifier is mainly through an internal evaporator and condenser circulation system, which condenses moisture in the air into water droplets and discharges them, thereby reducing ambient humidity.

[0003] However, in the actual operation of dehumidifiers, the evaporator, as one of the core components, faces a common technical challenge—frost formation. Frost formation refers to the phenomenon where, in low-temperature and low-humidity environments, when the evaporator surface temperature is lower than the air dew point temperature, water vapor in the air condenses directly onto the evaporator surface, forming ice crystals. This phenomenon not only affects the dehumidifier's working efficiency but can also lead to equipment damage and increased maintenance costs. Although some solutions have been developed to address the evaporator frosting problem, such as using antifreeze, improving evaporator design, and increasing defrosting cycles, these methods often suffer from drawbacks such as limited defrosting effectiveness, long dehumidifier downtime, high costs, or complex operation. Utility Model Content

[0004] To address the issues raised in the background section regarding the easy frost buildup on the evaporator surface of existing dehumidifiers and the poor defrosting performance, high cost, and complex operation of existing solutions, this application provides a multi-duct system for dehumidifiers.

[0005] The multi-duct system for a dehumidifier provided in this application adopts the following technical solution:

[0006] A multi-duct system for a dehumidifier includes a casing, an evaporator, and a condenser, wherein the evaporator and condenser are mounted on the casing and a gap is formed between the evaporator and the condenser.

[0007] The casing is provided with an air outlet channel and an air return channel that can communicate with each other. The air return channel is connected to the gap formed between the evaporator and the condenser, and the gap between the evaporator and the condenser is connected to the air outlet channel through a guide air duct.

[0008] Among them, some of the hot air drawn out from the air outlet can enter the return air channel, pass through the gap between the evaporator and the condenser, and then be introduced back into the air outlet channel after passing through the guide air channel to form an internal circulation. During the internal circulation process, the hot air can come into contact with the evaporator, which can achieve a rapid defrosting effect after frost forms on the surface of the evaporator.

[0009] By adopting the above technical solution, a circulating air duct can be formed inside the dehumidifier, which facilitates the internal circulation of hot air. During the hot air circulation, heat exchange can be formed with the evaporator, accelerating the rise of the evaporator surface temperature. This helps to prevent frost formation on the evaporator surface to a certain extent, and also allows for rapid defrosting after frost has formed on the evaporator surface. This reduces the dehumidifier's downtime, increases the machine's effective working time, and enables the dehumidifier to maintain normal operation even at low temperatures.

[0010] Optionally, the housing is provided with an openable and closable first air guide plate, which is configured to connect or isolate the air outlet channel and the air return channel.

[0011] By adopting the above technical solution, the first air guide plate can have two working states: open and closed. In the closed state, outside air can pass through the evaporator and condenser and finally be discharged from the air outlet duct, which is a conventional dehumidification air path. When the first air guide plate is in the open state, part of the hot air entering from the condenser into the air outlet duct is discharged to the outside, and another part of the hot air can pass through the air outlet where the first air guide plate is located into the return air duct. Then, from the return air duct, it passes through the gap between the evaporator and condenser, and finally enters the air outlet duct from the guide air duct, forming an internal circulation inside the dehumidifier. During the hot air circulation process, heat exchange can be formed between the hot air and the evaporator, thereby avoiding frost formation on the evaporator or rapid defrosting after frost formation on the evaporator surface. The opening and closing of the first air guide plate can realize the control of the internal circulation of hot air inside the dehumidifier, and can be opened or closed according to the operating conditions.

[0012] Optionally, it also includes a first air inlet channel, which is a channel that passes through the evaporator and condenser and is connected to the air outlet channel.

[0013] By adopting the above technical solution, outside air can pass through the evaporator and condenser when the dehumidifier is working, so as to achieve the dehumidification effect of a dehumidifier with a traditional structure.

[0014] Optionally, a second air inlet duct is also included. The second air inlet duct is located on the side of the casing away from the return air duct. The second air inlet duct is connected to the gap between the evaporator and the condenser. The second air inlet duct is connected to the return air duct.

[0015] By adopting the above technical solution, when the dehumidifier is working, outside air can pass through the evaporator and condenser, and some of the outside air can also enter between the evaporator and condenser through the second air inlet channel, thereby forming a condensation effect between the evaporator and condenser. In addition, the returning hot air can also come into contact with the air entering the second air inlet channel, accelerating the condensation speed, thereby significantly improving the dehumidification effect.

[0016] Optionally, a second air guide plate that can be opened and closed is installed at the inlet of the second air inlet channel.

[0017] By adopting the above technical solution, on the one hand, the second air guide plate can be opened according to actual needs to achieve the purpose of rapid dehumidification; on the other hand, the second air guide plate can be closed while the first air guide plate is open to prevent the hot air from flowing back out of the second air inlet channel.

[0018] Optionally, a number of condenser tubes are installed on the casing at a position in the gap between the evaporator and the condenser, and the condenser tubes are respectively connected to the return air channel and the guide air channel.

[0019] By adopting the above technical solution, after the air enters the dehumidifier through the second air inlet channel, it can enter the condenser tube and complete the condensation inside the condenser tube, thereby improving the dehumidification efficiency.

[0020] Optionally, the condenser tube is located on the side closer to the evaporator.

[0021] By adopting the above technical solution, hot air can enter the condenser tube during the hot air recirculation process, thereby exchanging heat with the evaporator and facilitating the defrosting of the evaporator surface.

[0022] Optionally, the housing includes an upper frame connected to the top of the evaporator and condenser, and a lower frame connected to the bottom of the evaporator and condenser. The return air duct and the second air inlet duct are located inside the upper frame; the air guide duct is located inside the lower frame.

[0023] By adopting the above technical solution, the evaporator and condenser can be connected and fixed through the upper and lower frames to form an integral structure, which facilitates the assembly and maintenance of the equipment. The return air duct is set on the upper frame, that is, near the top of the dehumidifier, to cooperate with the way the air is discharged from the top of the dehumidifier, so as to achieve a better return flow effect.

[0024] Optionally, the housing also includes side supports, which are connected to the upper frame and the lower frame respectively.

[0025] Optionally, a fan is installed on the outside of the side bracket, and the air outlet channel is located inside the fan.

[0026] By adopting the above technical solution, the upper and lower frames are further connected and fixed by the side brackets, and the fan can be installed on the side brackets, thereby improving the structural compactness of the equipment.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] This invention features a hot air circulation path inside the dehumidifier that allows for internal circulation. On one hand, this effectively prevents evaporator frost formation or enables rapid defrosting, avoiding the problem of short working hours due to prolonged dehumidifier downtime, thus improving dehumidification capacity. On the other hand, this hot air circulation path allows the air entering the second air inlet channel to come into contact with the air during operation, resulting in a rapid condensation process and improving the condensation effect, which in turn increases dehumidification capacity. Attached Figure Description

[0029] Figure 1 This is a perspective view of the present invention;

[0030] Figure 2 This is an exploded view of the present invention;

[0031] Figure 3 This is a cross-sectional view of the present invention;

[0032] Figure 4 This is a perspective view of the upper frame of this utility model;

[0033] Figure 5 This is a sectional view of the upper frame of this utility model;

[0034] Figure 6 This is a perspective view of the lower frame of this utility model;

[0035] Figure 7 This is a cross-sectional view of the lower frame of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Upper frame; 101. First mounting hole; 2. Evaporator; 3. Condenser pipe; 4. Condenser; 5. Side bracket; 6. Fan; 7. Lower frame; 701. Second mounting hole; 702. Groove; 8. Air outlet duct; 9. First air guide plate; 10. Return air duct; 11. Second air inlet duct; 12. Second air guide plate; 13. First air inlet duct; 14. Air duct. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] As shown in the figure, this application discloses a multi-duct system for a dehumidifier, including a casing, an evaporator 2 and a condenser 4. The evaporator 2 and the condenser 4 are installed on the casing and a gap is formed between the evaporator 2 and the condenser 4.

[0040] The casing is provided with an air outlet channel 8 and a return air channel 10 that can communicate with each other. The return air channel 10 is connected to the gap formed between the evaporator 2 and the condenser 4, and the gap between the evaporator 2 and the condenser 4 is connected to the air outlet channel 8 through the air guide channel 14.

[0041] The casing includes an upper frame 1 connected to the top of the evaporator 2 and the condenser 4, and a lower frame 7 connected to the bottom of the evaporator 2 and the condenser 4. The return air duct 10 and the second air inlet duct 11 are located inside the upper frame 1. The air guide duct 14 is located inside the lower frame 7. In addition, the casing also includes a side support 5, which is connected to the upper frame 1 and the lower frame 7 respectively. That is, the side support 5, the upper frame 1 and the lower frame 7 are assembled as a whole to form the casing.

[0042] Among them, some of the hot air drawn out from the air outlet duct 8 can enter the return air duct 10, pass through the gap between the evaporator 2 and the condenser 4, and then be introduced back into the air outlet duct 8 after passing through the guide air duct 14 to form an internal circulation. During the internal circulation process, the hot air can come into contact with the evaporator 2, which can achieve a rapid defrosting effect after the evaporator 2 surface is frosted.

[0043] Specifically, the housing is provided with an openable and closable first air guide plate 9. The first air guide plate 9 is configured to connect or isolate the air outlet channel 8 and the return air channel 10. The first air guide plate 9 can be rotatably mounted on the housing using a rotating shaft, specifically mounted on the side bracket 5. The first air guide plate 9 can be automatically controlled by a motor. Its control structure and principle are conventional methods in the prior art and will not be described in detail here. Its purpose is to be able to connect to the dehumidifier's control system during actual operation, and to open or close the first air guide plate 9 when needed.

[0044] Specifically, it also includes a first air inlet channel 13, which is a channel that passes through the evaporator 2 and the condenser 4 and is connected to the air outlet channel 8. The first air inlet channel 13 is a conventional dehumidification channel, that is, after the outside air enters the dehumidifier, it can pass through the evaporator 2 and the condenser 4 and finally be discharged from the air outlet channel 8 to complete the traditional dehumidification process.

[0045] Specifically, it also includes a second air inlet channel 11, which is located on the side of the casing away from the return air channel 10. The second air inlet channel 11 connects to the gap between the evaporator 2 and the condenser 4, and is connected to the return air channel 10. In this example, both the return air channel 10 and the air inlet channel are located inside the upper frame 1. The return air channel 10 is located on the side closer to the air outlet channel 8, and the second air inlet channel 11 is located on the side of the dehumidifier's air inlet. During operation, some air can enter the dehumidifier from the second air inlet channel 11 and enter the position between the evaporator 2 and the condenser 4 to accelerate the condensation speed. In addition, the return hot air entering the return air channel 10 can also contact the air in the second air inlet channel 11, thereby further improving the condensation speed and ultimately achieving a significant increase in dehumidification capacity and dehumidification efficiency.

[0046] Specifically, a second air guide plate 12 that can be opened and closed is installed at the inlet of the second air inlet channel 11. The second air guide plate 12 is similar in installation principle to the first air guide plate 9. It can also be opened and closed automatically by a motor. During the defrosting process, the second air guide plate 12 is closed and the first air guide plate 9 is opened, so that the return air can enter between the evaporator 2 and the condenser 4, thereby achieving the defrosting effect.

[0047] Specifically, a number of condenser pipes 3 are installed on the casing at the position between the evaporator 2 and the condenser 4. The condenser pipes 3 are connected to the return air channel 10 and the air guide channel 14 respectively. In this example, the condenser pipes 3 are used as connecting parts to connect the internal cavity of the upper frame 1 and the internal cavity of the lower frame 7. More specifically, the upper frame 1 has a number of first mounting holes 101, which can be connected to the return air channel 10 and the second air inlet channel 11. The lower frame 7 has a number of second mounting holes 701, which are connected to the air guide channel 14. The two ends of the condenser pipes 3 are inserted into the first mounting holes 101 and the second mounting holes 701 respectively, in order to avoid the problem of disordered diffusion caused by the air entering the position between the evaporator 2 and the condenser 4 during the hot air return or air inlet process, so as to achieve a guiding effect.

[0048] In addition, the bottom wall of the air duct 14 inside the lower frame 7 has a downwardly recessed groove 702 for storing condensate flowing down from the condenser pipe 3.

[0049] Specifically, the condenser 3 is located on the side close to the evaporator 2. More specifically, the condenser 3 is in contact with the evaporator 2, so that the return hot air can exchange heat with the evaporator 2 more quickly, thereby improving the defrosting effect and speed.

[0050] Specifically, a fan 6 is installed on the outside of the side bracket 5, and the air outlet duct 8 is located inside the fan 6. The fan 6 is a centrifugal fan with its outlet facing upwards of the dehumidifier, which is used to introduce external air into the dehumidifier and finally exhaust it from the air outlet duct 8 to achieve the purpose of induced air dehumidification.

[0051] This type of dehumidifier, which can efficiently dehumidify under low-temperature conditions, has the following operating states:

[0052] 1. Normal dehumidification operation of the dehumidifier: In this state, both the first air guide plate 9 and the second air guide plate 12 are closed. Outside air enters the dehumidifier from the second air inlet of the front cover, and heat exchange is achieved as it passes through the evaporator 2 and the condenser 4. Finally, it is discharged from the air outlet 8 driven by the fan 6.

[0053] 2. The dehumidifier's rapid dehumidification mode: "rapid" refers to the dehumidification mode as described above. In this mode, the second air guide plate 12 is open and the first air guide plate 9 is closed. Outside air not only enters the dehumidifier through the first air inlet channel 13, but also enters the condenser pipe 3 through the second air inlet channel 11. Compared to the first mode described above, the condensation effect is better and the dehumidification efficiency is higher because the humid air enters the condenser pipe 3.

[0054] 3. When the evaporator 2 begins to frost at low temperatures, the first air guide plate 9 opens and the second air guide plate 12 closes. Some of the dry hot air inside the machine can enter the return air channel 10 and then the condenser pipe 3 to exchange heat with the evaporator 2. This can raise the surface temperature of the evaporator 2, prevent frost from forming on the surface of the evaporator 2, and also quickly defrost after frost forms on the surface of the evaporator 2, thereby reducing the dehumidifier's downtime and increasing the effective working time. This allows the dehumidifier to continue operating normally at low temperatures. After defrosting is complete, the second air guide plate 12 opens and the first air guide plate 9 closes, and the dehumidifier will return to high dehumidification mode.

[0055] 4. When both the first air guide plate 9 and the second air guide plate 12 are open, the dry hot air circulating inside can meet the cold and humid air outside. This temperature difference can accelerate the condensation effect and thus significantly increase the dehumidification capacity.

[0056] The following is a comparison table of the dehumidification capacity of the dehumidifier in this embodiment and ordinary dehumidifiers in the prior art:

[0057]

[0058] From the data in the table above, we can see that:

[0059] 1. Under the same temperature conditions, the dehumidifier in this embodiment has a significantly improved dehumidification capacity, with the highest percentage increase being 71%;

[0060] 2. Under the same humidity conditions, the dehumidifier in this embodiment has a significantly improved dehumidification capacity, with the highest percentage increase being 71%.

[0061] 3. The dehumidifier in this embodiment performs better in low-temperature environments, making it more suitable for use under low-temperature conditions;

[0062] 4. The dehumidifier in this embodiment performs better in low humidity environments.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-duct system for a dehumidifier, characterized in that, It includes a casing, an evaporator (2) and a condenser (4), the evaporator (2) and the condenser (4) are mounted on the casing and a gap is formed between the evaporator (2) and the condenser (4); The casing is provided with an air outlet channel (8) and a return air channel (10) that can communicate with each other. The return air channel (10) is connected to the gap formed between the evaporator (2) and the condenser (4), and the gap between the evaporator (2) and the condenser (4) is connected to the air outlet channel (8) through the air guide channel (14) below the casing. Among them, some of the hot air exported from the air outlet channel (8) can enter the return air channel (10), pass through the gap between the evaporator (2) and the condenser (4), and then be introduced into the air outlet channel (8) again after passing through the guide air channel (14) to form an internal circulation. During the internal circulation process, the hot air can come into contact with the evaporator (2) to achieve the effect of rapid defrosting after the evaporator (2) surface is frosted.

2. The multi-duct system of a dehumidifier according to claim 1, characterized in that, The housing is provided with an openable and closable first air guide plate (9), which is configured to connect or isolate the air outlet channel (8) and the return air channel (10).

3. The multi-duct system of a dehumidifier according to claim 1, characterized in that, It also includes a first air inlet channel (13), which is a channel that passes through the evaporator (2) and the condenser (4) and is connected to the air outlet channel (8).

4. A multi-duct system for a dehumidifier according to any one of claims 1-3, characterized in that, It also includes a second air inlet channel (11), which is located on the side of the casing away from the return air channel (10). The second air inlet channel (11) is connected to the gap between the evaporator (2) and the condenser (4). The second air inlet channel (11) is connected to the return air channel (10).

5. The multi-duct system of a dehumidifier according to claim 4, characterized in that, A second air guide plate (12) that can be opened and closed is installed at the entrance of the second air inlet channel (11).

6. The multi-duct system of a dehumidifier according to claim 1, characterized in that, Several condenser tubes (3) are installed on the casing and in the gap between the evaporator (2) and the condenser (4). The condenser tubes (3) are connected to the return air channel (10) and the guide air channel (14) respectively.

7. The multi-duct system of a dehumidifier according to claim 6, characterized in that, The condenser tube (3) is located on the side close to the evaporator (2).

8. The multi-duct system of a dehumidifier according to claim 4, characterized in that, The housing includes an upper frame (1) connected to the top of the evaporator (2) and the condenser (4), and a lower frame (7) connected to the bottom of the evaporator (2) and the condenser (4). The return air channel (10) and the second air inlet channel (11) are located inside the upper frame (1); the air guide duct (14) is located inside the lower frame (7).

9. The multi-duct system of a dehumidifier according to claim 8, characterized in that, The housing also includes a side bracket (5), which is connected to the upper frame (1) and the lower frame (7) respectively.

10. The multi-duct system of a dehumidifier according to claim 9, characterized in that, A fan (6) is installed on the outside of the side bracket (5), and the air outlet channel (8) is located inside the fan (6).

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