Heat exchange apparatus and control method for heat exchange apparatus

Abstract

The application provides a heat exchange device and a control method of the heat exchange device. The heat exchange device comprises a water collecting structure, an evaporator and a drainage box. The drainage box is arranged on the top of the evaporator. The drainage box has an overflow groove extending along the length direction of the evaporator and an overflow hole arranged on at least one side of the overflow groove. The overflow hole is arranged in a spaced and communicated manner with the overflow groove. The water collecting structure is communicated with the liquid inlet of the drainage box to supply liquid to the overflow groove. The overflow hole is arranged towards the evaporator. The heat exchange device and the control method of the heat exchange device can solve the problem that the liquid flowing to the evaporator cannot reach the evaporator uniformly in the prior art.

Description

Technical Field

[0001] This invention relates to the technical field of heat exchange equipment, and more specifically, to a heat exchange equipment and a control method for the heat exchange equipment. Background Technology

[0002] In the present technology, heat exchange equipment such as air conditioners will produce condensate during use. In order to avoid the environmental impact of condensate, heat exchange equipment is generally equipped with a liquid collection device to collect the condensate generated on the indoor side and the defrost water generated on the outdoor side.

[0003] Currently, liquid collection devices mainly treat liquids by centrally discharging or partially supplying liquid to the evaporator to achieve auxiliary consumption after collecting condensate and defrost water. By having a portion of the liquid flow to the evaporator, the air flowing through the evaporator can be humidified.

[0004] However, in the prior art, during the process of liquid flowing to the evaporator, the flow rate of the overflow hole near the liquid inlet is greater than that of the overflow hole far from the liquid inlet, which causes the liquid flowing to the evaporator to not flow evenly to the evaporator.

[0005] As can be seen from the above, the heat exchange equipment in the existing technology has the problem that the liquid flowing to the evaporator cannot achieve a uniform flow to the evaporator. Summary of the Invention

[0006] The main objective of this invention is to provide a heat exchange device and a control method for the heat exchange device, so as to solve the problem in the prior art where the liquid flowing to the evaporator cannot achieve uniform flow to the evaporator.

[0007] To achieve the above objectives, according to one aspect of the present invention, a heat exchange device is provided, comprising a water collection structure; an evaporator; and a drain box disposed on top of the evaporator. The drain box has an overflow groove extending along the length of the evaporator and an overflow hole disposed on at least one side of the overflow groove. The overflow hole is spaced apart from and communicates with the overflow groove. The water collection structure communicates with the liquid inlet of the drain box for supplying liquid to the overflow groove, and the overflow hole is disposed facing the evaporator.

[0008] Furthermore, along a first direction perpendicular to the length of the overflow channel, the overflow hole is located on one or both sides of the overflow channel.

[0009] Furthermore, multiple overflow holes are provided, and the multiple overflow holes are arranged at equal or unequal intervals along the length direction of the overflow channel; and / or the distance between the upper surface of each overflow hole and the bottom surface of the overflow channel is equal.

[0010] Furthermore, along the height direction of the drainage box, the opening end of the overflow hole that connects with the overflow trough is located above the bottom surface of the overflow trough.

[0011] Furthermore, the opening end of the overflow hole that connects to the overflow channel is coplanar with the opening of the overflow channel.

[0012] Furthermore, the drain box also has a water distribution channel that is connected to the overflow channel and is set at an angle. The bottom surface of the water distribution channel is located above the bottom surface of the overflow channel along the height direction of the drain box, and at least one overflow hole is provided inside the water distribution channel.

[0013] Furthermore, the drain box has a liquid inlet, which is connected to one end of the overflow channel along the extension direction of the overflow channel, and the water distribution channel extends in a direction away from the liquid inlet.

[0014] Furthermore, the angle between the extension direction of the water distribution trough and the extension direction of the overflow trough is A, where 0° < A ≤ 90°.

[0015] Furthermore, overflow holes are provided on the bottom surface of the water distribution tank; and / or multiple water distribution tanks are provided, with the multiple water distribution tanks extending from the overflow tank at intervals; and / or multiple overflow holes are provided inside each water distribution tank, with the multiple overflow holes at intervals along the extension direction of the water distribution tank.

[0016] Furthermore, the inlet is connected to one end of the overflow tank along the extension direction of the overflow tank, and the drain box also has a first drain outlet that can be opened and closed. The first drain outlet is located on the bottom surface of the overflow tank at the end away from the inlet.

[0017] Furthermore, the drainage box also has a second drain outlet, which is located on the side of the water distribution tank away from the overflow tank, and the opening end of the second drain outlet is coplanar with the opening end of the overflow hole.

[0018] Furthermore, the diameter of the second sewage outlet is larger than the diameter of the overflow hole.

[0019] Furthermore, the drainage box also has a first drain outlet and a second drain outlet. The drainage box includes a box body, which is provided with a liquid inlet, an overflow groove, an overflow hole, a first drain outlet, and a second drain outlet; a cover plate, which covers the box body and abuts against or is spaced apart from the upper surface of the groove of the water distribution groove; and a sealing element, which is provided between the box body and the cover plate, and the box body is sealed to the cover plate through the sealing element.

[0020] Furthermore, the heat exchange equipment also includes a chassis with a water collection trough, which is a water collection structure, and an evaporator mounted on the chassis; a water tank mounted on the chassis; a water pump mounted on the chassis, with the water tank connected to the water collection trough via the water pump, which provides driving force for the liquid to flow to the water tank; a first liquid outlet pipe, with the water tank connected to a drain box via the first liquid outlet pipe; a first valve body, mounted on the first liquid outlet pipe, for regulating the liquid flow rate; a second liquid outlet pipe, with the water tank discharging liquid to the outside of the heat exchange equipment via the second liquid outlet pipe; and a second valve body, mounted on the second liquid outlet pipe, for opening and closing the second liquid outlet pipe.

[0021] Furthermore, the chassis has an indoor installation area and an outdoor installation area. The evaporator, drain box, and water tank are located in the indoor installation area. The heat exchange equipment also includes a humidity sensor and a controller, which are located in the indoor installation area. The controller is electrically connected to the evaporator, condenser, humidity sensor, first valve body, and second valve body.

[0022] According to another aspect of the present invention, a control method for a heat exchange device is provided. The heat exchange device is as described above, and the heat exchange device has a working mode and a self-cleaning mode. The control method for the heat exchange device includes:

[0023] Receive control commands;

[0024] Determine and execute the working mode or self-cleaning mode according to the control instructions;

[0025] When the self-cleaning mode is executed, the second valve of the heat exchanger is closed, and the inlet flow rate of the drain box is adjusted to the second inlet flow rate to clean the drain box.

[0026] When the working mode is executed, the water inlet flow rate of the drain box is adjusted to the first water inlet flow rate according to the real-time humidity of the indoor side. At this time, the second valve body is closed, or the first valve body of the heat exchange equipment is closed and the second valve body is opened. At this time, the water inlet to the drain box is stopped and the liquid is discharged to the outside of the heat exchange equipment.

[0027] Furthermore, the self-cleaning mode also includes:

[0028] Determine whether the actual water level inside the water tank has reached the first preset water level;

[0029] Once the actual water level inside the water tank reaches the first preset water level, the overflow tank self-cleaning is activated, the first drain outlet is opened, and the water inlet flow rate is set to the second water inlet flow rate.

[0030] When the actual water level inside the water tank drops to the second preset water level, the overflow tank self-cleaning is turned off, the overflow hole self-cleaning is started, the first drain port is closed, and the liquid is discharged from the second drain port.

[0031] Furthermore, the second inlet flow rate is greater than the first inlet flow rate.

[0032] Furthermore, adjusting the water inlet flow rate of the drain box to the first water inlet flow rate or shutting off the water inlet to the drain box based on the real-time humidity on the indoor side includes:

[0033] Get real-time humidity;

[0034] Compare the real-time humidity with the preset humidity;

[0035] When the real-time humidity is greater than the preset humidity, the first valve body is closed and the second valve body is opened, so that the liquid is discharged from the second outlet pipe.

[0036] When the real-time humidity is lower than the preset humidity, the first valve body is opened and the second valve body is closed, and the first inlet water flow rate is executed to supply liquid to the drain box.

[0037] According to the technical solution of the present invention, the heat exchange device includes a water collection structure, an evaporator and a drain box. The drain box is disposed on the top of the evaporator. The drain box has an overflow groove extending along the length direction of the evaporator and an overflow hole disposed on at least one side of the overflow groove. The overflow hole is spaced apart from and connected to the overflow groove. The water collection structure is connected to the liquid inlet of the drain box for supplying liquid to the overflow groove. The overflow hole is disposed facing the evaporator.

[0038] As can be seen from the above, this application uses an overflow hole spaced apart from the overflow tank on at least one side of the overflow tank to allow the liquid inside the overflow tank to overflow and flow to the overflow hole. The liquid then flows to the evaporator through the overflow hole, thereby avoiding the problem in the prior art where the flow rate of the overflow hole near the liquid inlet is greater than that of the overflow hole far from the liquid inlet, resulting in the liquid not flowing evenly to the evaporator.

[0039] The matching structure of the overflow groove and overflow hole in this application facilitates the separate cleaning of the overflow groove and overflow hole, thereby avoiding the problem of blockage that prevents the liquid from flowing evenly to the evaporator.

[0040] This application achieves cleaning of the overflow tank and overflow hole by setting a first drain outlet that cooperates with the overflow tank and a second drain outlet that cooperates with the overflow hole, which has the advantages of simple operation and high cleaning efficiency. Attached Figure Description

[0041] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0042] Figure 1 A three-dimensional structural schematic diagram of the heat exchange device of the present invention is shown;

[0043] Figure 2An exploded view of the drainage box of the present invention is shown;

[0044] Figure 3 A top view of the box body of the present invention is shown;

[0045] Figure 4 A cross-sectional view of the box body of the present invention is shown;

[0046] Figure 5 A flowchart of the control method for the heat exchanger of the present invention is shown.

[0047] The above figures include the following reference numerals:

[0048] 10. Chassis; 110. Water collection structure; 20. Evaporator; 30. Drain box; 310. Box body; 311. Overflow trough; 312. Water distribution trough; 313. Overflow hole; 314. First drain outlet; 315. Second drain outlet; 316. Liquid inlet; 320. Cover plate; 330. Seal; 40. Water tank; 50. Condenser; 60. Water pump. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0051] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0052] Example 1

[0053] To address the problem in existing heat exchange equipment where the liquid flowing towards the evaporator cannot achieve uniform flow, this invention provides a heat exchange device.

[0054] Specifically, the heat exchange equipment is an air conditioner.

[0055] like Figures 1 to 4As shown, the heat exchange device includes a water collection structure 110, an evaporator 20, and a drain box 30. The drain box 30 is disposed on the top of the evaporator 20. The drain box 30 has an overflow groove 311 extending along the length of the evaporator 20 and an overflow hole 313 disposed on at least one side of the overflow groove 311. The overflow hole 313 is spaced apart from and connected to the overflow groove 311. The water collection structure 110 is connected to the liquid inlet 316 of the drain box 30 for supplying liquid to the overflow groove 311. The overflow hole 313 is disposed facing the evaporator 20.

[0056] Specifically, this application employs an overflow hole 313 spaced apart from the overflow tank 311 on at least one side of the overflow tank 311, so that the liquid inside the overflow tank 311 overflows and flows to the overflow hole 313, and the liquid flows to the evaporator 20 through the overflow hole 313. This avoids the problem in the prior art where the flow rate of the overflow hole 313 near the liquid inlet 316 is greater than the flow rate of the overflow hole 313 far from the liquid inlet 316, resulting in the liquid not flowing evenly to the evaporator 20.

[0057] Furthermore, the drain box 30 is located on top of the evaporator 20 so that the liquid inside the drain box 30 can flow to the evaporator 20 under the action of gravity.

[0058] In this embodiment, the overflow trough 311 extends along the length of the evaporator 20 to ensure that the liquid inside the overflow trough 311 flows evenly throughout the evaporator 20, avoiding the problem of uneven humidification of the gas flowing through the evaporator 20. The overflow trough 311 is configured to open in a direction away from the evaporator 20.

[0059] like Figures 1 to 4 As shown, overflow holes 313 are located on both sides of overflow groove 311 along a first direction perpendicular to the length direction of overflow groove 311.

[0060] The first direction is the X direction shown in the figure, which is the width direction of the drainage box 30.

[0061] Specifically, overflow holes 313 are provided on both sides of the overflow tank 311 so that the liquid overflowing from the overflow tank 311 can flow to the evaporator 20 through the overflow holes 313 on both sides of the overflow tank 311, which increases the water distribution area and is conducive to uniform contact with the fins of the evaporator 20, thereby uniformly wetting the gas flowing through the evaporator 20.

[0062] In this embodiment, multiple overflow holes 313 are provided, and the multiple overflow holes 313 are equally spaced along the length direction of the overflow channel 311, so that the liquid can flow evenly to the evaporator 20 through the overflow holes 313 along the length direction of the overflow channel 311.

[0063] Of course, it is not limited to the above-mentioned multiple overflow holes 313 being equally spaced along the length of the overflow groove 311. Multiple overflow holes 313 can also be arranged at unequal intervals along the length of the overflow groove 311. The distance between two overflow holes 313 can be adapted as needed.

[0064] Furthermore, multiple overflow holes 313 are provided, and the distance between the upper surface of each overflow hole 313 and the bottom surface of the overflow tank 311 is equal, so as to ensure that the liquid overflowing from the overflow tank 311 can flow into the interior of multiple overflow holes 313 in equal amounts. The upper surface of the overflow hole 313 is the surface where the opening of the overflow hole 313 is located on the side away from the evaporator 20.

[0065] In this embodiment, the open end of the overflow hole 313 that communicates with the overflow groove 311 is located above the bottom surface of the overflow groove 311, and the other open end of the overflow hole 313 is positioned towards the evaporator 20. The overflow hole 313 extends along the height direction of the drain box 30.

[0066] like Figures 1 to 4 As shown, the drainage box 30 also has a water distribution groove 312 that is connected to the overflow groove 311 and is set at an angle. The bottom surface of the water distribution groove 312 is located above the bottom surface of the overflow groove 311 along the height direction of the drainage box 30. At least one overflow hole 313 is provided inside the water distribution groove 312.

[0067] Specifically, the water distribution tank 312 is connected to the overflow tank 311, thereby enabling the overflow tank 311 to be connected to the overflow hole 313 through the water distribution tank 312. After the liquid enters the interior of the overflow tank 311, part of the liquid will overflow out of the overflow tank 311 and flow into the interior of the water distribution tank 312 and flow along the water distribution tank 312. The liquid that enters the interior of the water distribution tank 312 flows out through the overflow hole 313 and flows to the evaporator 20.

[0068] Furthermore, the angled water distribution channel 312 can reduce water resistance. In this embodiment, the drain box 30 has a liquid inlet 316, which is connected to one end of the overflow channel 311 along the extension direction of the overflow channel 311. The water distribution channel 312 extends away from the liquid inlet 316 so that the angle between the extension direction of the water distribution channel 312 and the extension direction of the overflow channel 311 is A, where 0° < A ≤ 90°. This allows the water distribution channel 312 to be set facing the water inlet direction, thereby improving the flow efficiency of the liquid and improving the cleaning efficiency when rinsing the water distribution channel 312 with liquid.

[0069] It should be noted that in this embodiment, the angle between the extension direction of the water distribution tank 312 and the extension direction of the overflow tank 311 can also be greater than 90°. However, the liquid flow efficiency at this time is lower than the liquid flow efficiency when the angle A satisfies 0°<A≤90°, which leads to the problem of low cleaning efficiency when the water distribution tank 312 is flushed with liquid.

[0070] Furthermore, the overflow hole 313 is provided on the bottom surface of the water distribution tank 312 so that the liquid inside the water distribution tank 312 can flow completely through the overflow hole 313 to the evaporator 20.

[0071] Furthermore, multiple water distribution tanks 312 are provided, and these multiple water distribution tanks 312 are spaced apart in the direction of extending the overflow tank 311. By providing multiple water distribution tanks 312, liquid can be supplied to the evaporator 20 through multiple water distribution tanks 312, thereby improving the uniformity of the liquid flowing to the evaporator 20. The multiple water distribution tanks 312 can be equally spaced, which is beneficial for further improving the uniformity of liquid flow; or they can be unequally spaced, depending on the specific requirements.

[0072] In this embodiment, each water distribution tank 312 is provided with a plurality of overflow holes 313, which are spaced apart along the extending direction of the water distribution tank 312. By providing a plurality of overflow holes 313, it is beneficial to improve the flow efficiency of liquid flowing to the evaporator 20, thereby improving the efficiency of humidifying the gas flowing through the evaporator 20.

[0073] like Figures 1 to 4 As shown, the drain box 30 has an inlet 316, which is connected to one end of the overflow tank 311 along the extension direction of the overflow tank 311. The drain box 30 also has an openable and closable first drain outlet 314, which is located on the bottom surface of the overflow tank 311 at the end away from the inlet 316.

[0074] Specifically, by setting a first drain port 314 at the end of the overflow tank 311 away from the liquid inlet 316, when it is necessary to clean the overflow tank 311, the first drain port 314 is opened to increase the flow rate of liquid, so that the solid dirt in the overflow tank 311 can be flushed and discharged through the first drain port 314, wherein the solid dirt is sand, sludge, etc.

[0075] Furthermore, the first sewage outlet 314 can be opened and closed by setting a valve to control the opening and closing of the first sewage outlet 314. The valve can be an electrically controlled valve that is electrically connected to the controller, or it can be a manually controlled valve.

[0076] Furthermore, the first sewage outlet 314 flows through the first sewage pipe to a sewage collection device for separate collection, such as a sewage collection box.

[0077] In this embodiment, the first drain outlet 314 is located at the end away from the liquid inlet 316, which is conducive to the discharge of all the dirt inside the overflow tank 311 through the first drain outlet 314; the first drain outlet 314 is located on the bottom surface of the overflow tank 311 to improve the flow efficiency of liquid and dirt.

[0078] like Figures 1 to 4 As shown, the drainage box 30 also has a second drain outlet 315, which is located on the side of the water distribution trough 312 away from the overflow trough 311. The second drain outlet 315 is coplanar with the opening end of the overflow hole 313.

[0079] Specifically, the second drain outlet 315 is located on the side of the water distribution tank 312 away from the overflow tank 311, so that when cleaning the water distribution tank 312, the solid dirt at the overflow hole 313 can be flushed to the second drain outlet 315, thereby avoiding the problem of dirt clogging the overflow hole 313 and causing the liquid to not flow evenly to the evaporator 20. The solid dirt includes sand, sludge, etc.

[0080] Furthermore, the second sewage outlet 315 flows through the second sewage pipe to a sewage collection device for separate collection, such as a sewage collection box.

[0081] Furthermore, the diameter of the second drain outlet 315 is larger than the diameter of the overflow hole 313, thereby enabling the second drain outlet 315 to discharge sewage.

[0082] In this embodiment, the second drain outlet 315 is located inside the water distribution tank 312 at one end away from the overflow tank 311, so that when rinsing the water distribution tank 312, the dirt inside the water distribution tank 312 can be completely rinsed to the second drain outlet 315 and discharged through the second drain outlet 315.

[0083] like Figures 1 to 4 As shown, the drainage box 30 includes a box body 310, a cover plate 320, and a sealing element 330. The box body 310 is provided with a liquid inlet 316, an overflow groove 311, an overflow hole 313, a first drain outlet 314, and a second drain outlet 315. The cover plate 320 covers the box body 310 and abuts against the upper surface of the groove of the water distribution groove 312. The sealing element 330 is disposed between the box body 310 and the cover plate 320, and the box body 310 is sealed to the cover plate 320 through the sealing element 330.

[0084] Among them, the sealing element 330 is a sealing gasket, and the cover plate 320 is covered on the box body 310 through the sealing element 330 to achieve sealing of the overflow groove 311 and the overflow hole 313.

[0085] Specifically, the seal 330 can be a sponge or a rubber pad.

[0086] In this embodiment, the box body 310 and the cover plate 320 can be connected by fasteners, such as bolts or screws; or they can be fixed by snap-fit.

[0087] like Figures 1 to 4 As shown, the heat exchange equipment also includes a chassis 10, a water tank 40, a water pump 60, a first liquid outlet pipe, a first valve body, a second liquid outlet pipe, and a second valve body. The chassis 10 has a water collection tank, which is a water collection structure 110. The evaporator 20 is mounted on the chassis 10, the water tank 40 is mounted on the chassis 10, and the water pump 60 is mounted on the chassis 10. The water tank 40 is connected to the water collection tank through the water pump 60. The water pump 60 is used to provide driving force for the liquid to flow to the water tank 40. The water tank 40 is connected to the drain box 30 through the first liquid outlet pipe. The first valve body is mounted on the first liquid outlet pipe to regulate the liquid flow rate. The water tank 40 discharges liquid to the outside of the heat exchange equipment through the second liquid outlet pipe. The second valve body is mounted on the second liquid outlet pipe to open and close the second liquid outlet pipe.

[0088] Specifically, the evaporator 20 is mounted on the chassis 10 to collect condensate from the indoor side; the water tank 40 is used to store liquid for liquid collection, and the liquid collected in the water tank 40 can be discharged directly or flow into the evaporator 20.

[0089] Furthermore, the first valve body has the function of controlling the flow rate, so that when the heat exchange equipment is in the working mode, the first valve body controls the liquid inside the water tank 40 to supply liquid to the drain box 30 at the first inlet flow rate, and the liquid in the drain box 30 flows to the evaporator 20 through the overflow hole 313; when the heat exchange equipment is in the self-cleaning mode, the first valve body controls the liquid inside the water tank 40 to supply liquid to the drain box 30 at the second inlet flow rate, so as to flush the overflow tank 311 and the water distribution tank 312.

[0090] In this embodiment, a second valve body is provided on the second liquid outlet pipe to control whether the liquid inside the water tank 40 is discharged to the outside of the heat exchange equipment.

[0091] In this embodiment, the chassis 10 has an indoor installation area and an outdoor installation area. The evaporator 20, drain box 30 and water tank 40 are installed in the indoor installation area. The heat exchange equipment also includes a condenser 50, a humidity sensor and a controller. The condenser 50 is installed in the outdoor installation area, and the humidity sensor and controller are installed in the indoor installation area. The controller is electrically connected to the evaporator 20, the condenser 50, the humidity sensor, the first valve body and the second valve body. The controller is also used to control the opening and closing of the first drain port 314.

[0092] The controller and humidity sensor can be installed inside the electrical box, which is mounted on the chassis 10 and located on the indoor side. The humidity sensor is used to detect the real-time humidity in the room.

[0093] Example 2

[0094] Unlike Embodiment 1, in this embodiment, the water distribution tank 312 is not provided.

[0095] Specifically, the open end of the overflow hole 313 that connects to the overflow groove 311 is coplanar with the groove opening of the overflow groove 311, so that the liquid inside the overflow groove 311 overflows and flows to the overflow hole 313.

[0096] Furthermore, the cover plate 320 is placed on the box body 310, and the cover plate 320 is spaced apart from the plane where the slot of the overflow groove 311 is located.

[0097] Furthermore, the seal 330 is an annular sealing ring.

[0098] In this embodiment, the box body 310 has a bottom plate and a surrounding plate. An overflow groove 311 and an overflow hole 313 are disposed on the surface of the bottom plate facing the cover plate 320. The surrounding plate and the bottom plate cooperate to form an accommodating area. The cover plate 320 covers the end of the surrounding plate away from the bottom plate and achieves a sealed connection by using a sealing ring. The bottom plate and the cover plate 320 are spaced apart to form a flow gap between them. The overflow groove 311 communicates with the overflow hole 313 through the flow gap.

[0099] Example 3

[0100] Unlike Embodiment 1, in this embodiment, the overflow hole 313 is located on one side of the overflow groove 311 along a first direction perpendicular to the length direction of the overflow groove 311.

[0101] In this embodiment, the overflow trough 311 is provided with an overflow hole 313 on only one side, which helps to reduce the overall volume of the drainage box 30.

[0102] Example 4

[0103] The present invention provides a control method for a heat exchange device, wherein the heat exchange device is any one of the heat exchange devices in Embodiment 1 to Embodiment 3, and the heat exchange device has a working mode and a self-cleaning mode.

[0104] like Figure 5 As shown, the control methods for the heat exchange equipment include:

[0105] Receive control commands;

[0106] Determine and execute the working mode or self-cleaning mode according to the control instructions;

[0107] When the self-cleaning mode is executed, the second valve of the heat exchanger is closed, and the inlet flow rate of the drain box 30 is adjusted to the second inlet flow rate to clean the drain box 30.

[0108] When the working mode is executed, the water inlet flow rate of the drain box 30 is adjusted to the first water inlet flow rate according to the real-time humidity of the indoor side. At this time, the second valve body is closed, or the first valve body of the heat exchange equipment is closed and the second valve body is opened. At this time, the water inlet to the drain box 30 is stopped and the liquid is discharged to the outside of the heat exchange equipment.

[0109] Specifically, control commands can be transmitted to the controller via a remote control or triggered by a button, thereby enabling the activation of the working mode or the self-cleaning mode, respectively.

[0110] Furthermore, the second inlet flow rate is greater than the first inlet flow rate, wherein the opening of the first inlet flow rate is 10%-60% of the diameter of the first outlet pipe, and the opening of the first inlet flow rate is approximately equal to the diameter of the first outlet pipe.

[0111] The self-cleaning mode also includes:

[0112] Determine whether the actual water level inside water tank 40 has reached the first preset water level;

[0113] After the actual water level inside the water tank 40 reaches the first preset water level, the overflow tank 311 self-cleaning is activated, the first drain port 314 is opened, and the water inlet flow rate is set to the second water inlet flow rate.

[0114] When the actual water level inside the water tank 40 drops to the second preset water level, the self-cleaning function of the overflow tank 311 is closed, the self-cleaning function of the overflow hole 313 is activated, the first drain port 314 is closed, and the liquid is discharged from the second drain port 315.

[0115] In this embodiment, the first drain outlet 314 is opened, and the overflow tank 311 is flushed by the second inlet flow rate. After the water level inside the water tank 40 drops to the second preset water level, the first drain outlet 314 is closed so that the liquid inside the drain box 30 is discharged outward through the second drain outlet 315, thereby cleaning the overflow tank 311.

[0116] It should be noted that when the liquid inside the water tank 40 is insufficient, the first valve body and the second valve body need to be closed to achieve liquid storage inside the water tank 40. After the water level inside the water tank 40 reaches the first preset water level, the self-cleaning mode is started.

[0117] Adjusting the water inlet flow rate of the drain box 30 to the first water inlet flow rate or shutting off the water inlet to the drain box 30 based on the real-time humidity of the indoor environment includes:

[0118] Get real-time humidity;

[0119] Compare the real-time humidity with the preset humidity;

[0120] When the real-time humidity is greater than the preset humidity, the first valve body is closed and the second valve body is opened, so that the liquid is discharged from the second outlet pipe.

[0121] When the real-time humidity is lower than the preset humidity, the first valve body is opened and the second valve body is closed, and the first water inlet flow rate is executed to supply liquid to the drain box 30.

[0122] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0123] 1. This application employs an overflow hole 313 spaced apart from the overflow tank 311 on at least one side of the overflow tank 311, so that the liquid inside the overflow tank 311 overflows and flows to the overflow hole 313, and the liquid flows to the evaporator 20 through the overflow hole 313. This avoids the problem in the prior art where the flow rate of the overflow hole 313 near the liquid inlet 316 is greater than the flow rate of the overflow hole 313 far away from the liquid inlet 316, resulting in the liquid not flowing evenly to the evaporator 20.

[0124] 2. The matching structure of the overflow groove 311 and overflow hole 313 in this application facilitates the separate cleaning of the overflow groove 311 and overflow hole 313, thereby avoiding the problem of blockage that prevents the liquid from flowing evenly to the evaporator 20.

[0125] 3. This application achieves the cleaning of overflow trough 311 and overflow hole 313 by setting a first drain port 314 that cooperates with overflow trough 311 and a second drain port 315 that cooperates with overflow hole 313, which has the advantages of simple operation and high cleaning efficiency.

[0126] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0127] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0128] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0129] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat exchange device, characterized in that, include: Water collection structure (110); Evaporator (20); A drain box (30) is disposed on the top of the evaporator (20). The drain box (30) has an overflow groove (311) extending along the length of the evaporator (20) and an overflow hole (313) disposed on at least one side of the overflow groove (311). The overflow hole (313) is spaced apart from and connected to the overflow groove (311). The water collection structure (110) is connected to the liquid inlet (316) of the drain box (30) for supplying liquid to the overflow groove (311). The overflow hole (313) is disposed facing the evaporator (20). Along the height direction of the drainage box (30), the opening end of the overflow hole (313) communicating with the overflow groove (311) is located above the bottom surface of the overflow groove (311); The drain box (30) also has a water distribution channel (312) that is connected to the overflow channel (311) and is angled. The bottom surface of the water distribution channel (312) is located above the bottom surface of the overflow channel (311) along the height direction of the drain box (30). At least one overflow hole (313) is provided inside the water distribution channel (312).

2. The heat exchange device according to claim 1, characterized in that, Along a first direction perpendicular to the length direction of the overflow groove (311), the overflow hole (313) is located on one or both sides of the overflow groove (311).

3. The heat exchange device according to claim 1, characterized in that, Multiple overflow holes (313) are provided. The plurality of overflow holes (313) are arranged at equal or unequal intervals along the length direction of the overflow groove (311); and / or The distance between the upper surface of each overflow hole (313) and the bottom surface of the overflow groove (311) is equal.

4. The heat exchange device according to claim 1, characterized in that, The opening end of the overflow hole (313) that connects to the overflow groove (311) is coplanar with the groove opening of the overflow groove (311).

5. The heat exchange device according to claim 1, characterized in that, The drain box (30) has a liquid inlet (316), which is connected to one end of the overflow channel (311) along the extension direction of the overflow channel (311), and the water distribution channel (312) extends in a direction away from the liquid inlet (316).

6. The heat exchange device according to claim 5, characterized in that, The angle between the extension direction of the water distribution trough (312) and the extension direction of the overflow trough (311) is A, where 0° < A ≤ 90°.

7. The heat exchange device according to claim 1, characterized in that, The overflow hole (313) is disposed on the bottom surface of the water distribution tank (312); and / or Multiple water distribution channels (312) are provided, and the multiple water distribution channels (312) are spaced apart in the extension direction of the overflow channel (311); and / or Each of the water distribution channels (312) is provided with a plurality of overflow holes (313), and the plurality of overflow holes (313) are spaced apart along the extension direction of the water distribution channel (312).

8. The heat exchange device according to claim 1, characterized in that, Along the extension direction of the overflow trough (311), the inlet (316) is connected to one end of the overflow trough (311), and the drain box (30) also has an openable and closable first drain outlet (314), which is located on the bottom surface of the overflow trough (311) at the end away from the inlet (316).

9. The heat exchange device according to claim 1, characterized in that, The drainage box (30) also has a second drain outlet (315), which is located on the side of the water distribution trough (312) away from the overflow trough (311), and the second drain outlet (315) is coplanar with the opening end of the overflow hole (313).

10. The heat exchange device according to claim 9, characterized in that, The diameter of the second drain outlet (315) is larger than the diameter of the overflow hole (313).

11. The heat exchange device according to claim 1, characterized in that, The drainage box (30) also has a first drain outlet (314) and a second drain outlet (315), and the drainage box (30) includes: The box body (310) is provided with the liquid inlet (316), the overflow groove (311), the overflow hole (313), the first drain outlet (314) and the second drain outlet (315). A cover plate (320) is placed on the box body (310), and the cover plate (320) abuts against or is spaced apart from the upper surface of the groove of the water distribution trough (312); A sealing element (330) is disposed between the box body (310) and the cover plate (320), and the box body (310) is sealed to the cover plate (320) through the sealing element (330).

12. The heat exchange device according to any one of claims 1 to 11, characterized in that, The heat exchange equipment also includes: The chassis (10) has a water collection tank, which is the water collection structure (110), and the evaporator (20) is mounted on the chassis (10). A water tank (40) is mounted on the chassis (10); A water pump (60) is mounted on the chassis (10), and the water tank (40) is connected to the water collection tank through the water pump (60). The water pump (60) is used to provide driving force for the liquid to flow to the water tank (40). The first outlet pipe connects the water tank (40) to the drain box (30). A first valve body is disposed on the first outlet pipe for regulating the liquid flow rate; The water tank (40) discharges liquid to the outside of the heat exchange equipment through the second liquid outlet pipe; The second valve body is disposed on the second outlet pipe and is used to open or close the second outlet pipe.

13. The heat exchange device according to claim 12, characterized in that, The chassis (10) has an indoor installation area and an outdoor installation area. The evaporator (20), the drain box (30), and the water tank (40) are disposed in the indoor installation area. The heat exchange equipment further includes: A condenser (50) is provided in the outdoor installation area; A humidity sensor and a controller are provided in the indoor installation area. The controller is electrically connected to the evaporator (20), the condenser (50), the humidity sensor, the first valve body, and the second valve body.

14. A control method for a heat exchanger, characterized in that, The control method of the heat exchange equipment includes the heat exchange equipment according to any one of claims 1 to 13, the heat exchange equipment including: a water tank (40); a first outlet pipe, the water tank (40) being connected to the drain box (30) through the first outlet pipe; a first valve body, the first valve body being disposed on the first outlet pipe for regulating liquid flow; a second outlet pipe, the water tank (40) discharging liquid to the outside of the heat exchange equipment through the second outlet pipe; a second valve body, the second valve body being disposed on the second outlet pipe for opening and closing the second outlet pipe, the heat exchange equipment having a working mode and a self-cleaning mode, and the control method of the heat exchange equipment including: Receive control commands; The working mode or the self-cleaning mode is determined and executed according to the control command; When the self-cleaning mode is executed, the second valve of the heat exchanger is closed, and the inlet flow rate of the drain box (30) is adjusted to the second inlet flow rate to clean the drain box (30). When the working mode is executed, the water inlet flow rate of the drain box (30) is adjusted to the first water inlet flow rate to enter the drain box (30) according to the real-time humidity of the indoor side. At this time, the second valve body is closed, or the first valve body of the heat exchange device is closed and the second valve body is opened. At this time, the water inlet to the drain box (30) is stopped, and the liquid is discharged to the outside of the heat exchange device.

15. The control method for the heat exchanger according to claim 14, characterized in that, The execution of the self-cleaning mode also includes: Determine whether the actual water level inside the water tank (40) has reached the first preset water level; After the actual water level inside the water tank (40) reaches the first preset water level, the overflow tank (311) is activated to perform self-cleaning, the first drain outlet (314) is opened, and the water inflow rate is set to the second water inflow rate. When the actual water level inside the water tank (40) drops to the second preset water level, the self-cleaning of the overflow tank (311) is closed, the self-cleaning of the overflow hole (313) is started, the first drain port (314) is closed, and the liquid is discharged from the second drain port (315).

16. The control method for the heat exchanger according to claim 14, characterized in that, The second inlet flow rate is greater than the first inlet flow rate.

17. The control method for the heat exchanger according to claim 14, characterized in that, The step of adjusting the water inlet flow rate of the drain box (30) to the first water inlet flow rate or shutting off the water inlet to the drain box (30) based on the real-time humidity on the indoor side includes: Get real-time humidity; Compare the real-time humidity with the preset humidity; When the real-time humidity is greater than the preset humidity, the first valve body is closed and the second valve body is opened, so that the liquid is discharged from the second outlet pipe; When the real-time humidity is less than the preset humidity, the first valve body is opened and the second valve body is closed, and the first inlet water flow rate is used to supply liquid to the drain box (30).

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