A water pan system for dual water pumps and a control method thereof

Abstract

The application discloses a double-water-pump water pan system and a control method thereof, and relates to the technical field of heat exchange equipment. The double-water-pump water pan system comprises a first water pan, a first water pump, a second water pump, a water level detection assembly and a control assembly. The first water pan is used for receiving and storing condensed water. The inlet of the first water pump is connected to the first water pan to suck the condensed water in the first water pan. The inlet of the second water pump is connected to the first water pan to suck the condensed water in the first water pan, and the second water pump and the first water pump are connected in parallel. The water level detection assembly is used for detecting the water level of the condensed water in the first water pan. The control assembly is signal-connected to the first water pump, the second water pump and the water level detection assembly to control the start and stop of the first water pump or the start and stop of the second water pump according to the detection result of the water level detection assembly. The water pan system can effectively guarantee continuous normal water drainage and reduce the occurrence of water overflow.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, and more specifically, to a water receiving pan system with two water pumps. Furthermore, this invention also relates to a control method suitable for the aforementioned water receiving pan system with two water pumps. Background Technology

[0002] Air conditioners are usually equipped with a drip tray. The main function of the drip tray is to collect and drain the condensate produced during the operation of the air conditioner, prevent the condensate from dripping onto the floor or walls, protect the home environment and air conditioning equipment, reduce the risk of slippery floors and damage, and extend the service life of the air conditioner.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems:

[0004] Currently, most air conditioning condensate tray systems utilize gravity for automatic drainage. A small number of these systems use drainage pumps for suction and drainage. However, the drainage pumps are prone to failure. Since servers cannot be shut down immediately, air conditioning needs to continue operating to cool them. Condensate will continuously be generated and flow into the condensate tray. If the pump fails, overflow will often occur, potentially causing water accumulation on the ground or even leaking into power supply and distribution equipment, posing a significant safety hazard. It can also increase the humidity in the data center, cause network equipment malfunctions, and disrupt the data center's information systems, all of which negatively impact business operations. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a water receiving tray system with dual water pumps to solve the problem in the prior art that normal drainage cannot be guaranteed when the water pumps malfunction.

[0006] Another object of the present invention is to provide a control method applicable to the above-mentioned dual-pump water receiving pan system.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A dual-pump water receiving tray system, comprising:

[0009] The first drip tray is used to receive and store condensate.

[0010] The first drainage pump has its inlet connected to the first water receiving pan to draw out condensate from the first water receiving pan.

[0011] The second drain pump has its inlet connected to the first water receiving pan to draw condensate from the first water receiving pan, and the second drain pump and the first drain pump are connected in parallel.

[0012] A water level detection component is used to detect the water level of condensate in the first water receiving tray;

[0013] A control component is connected to the first drainage pump, the second drainage pump, and the water level detection component to control the start and stop of the first drainage pump or the second drainage pump based on the detection result of the water level detection component.

[0014] Preferably, the water level detection component includes a high water level detector and a low water level detector disposed on the first water receiving tray, wherein the high water level detector is positioned at a higher height than the low water level detector.

[0015] Preferably, the control component includes electromagnetic switch A, electromagnetic switch B and electromagnetic switch C, and both the high water level detector and the low water level detector are liquid level switches;

[0016] The control terminal A1 of the electromagnetic switch A and the control terminal B1 of the electromagnetic switch B are connected in parallel and electrically connected to the low water level detector to form a first circuit.

[0017] The control terminal C1 of the electromagnetic switch C is connected in series with the high water level detector to form a second circuit, and the first circuit and the second circuit are connected in parallel.

[0018] One actuating terminal B2 of electromagnetic switch B and one actuating terminal C2 of electromagnetic switch C are connected in parallel and electrically connected to the branch circuit where the control terminal B1 of electromagnetic switch B is located.

[0019] One actuating terminal A2 of the electromagnetic switch A is electrically connected to the first drainage pump, and the other actuating terminal B3 of the electromagnetic switch B is electrically connected to the second drainage pump.

[0020] Preferably, the control component further includes a controller, and the other actuating terminal C3 of the electromagnetic switch C is electrically connected to the controller. The controller has a timer, an alarm, and a processor. The timer and the alarm are both signal-connected to the processor so as to control the alarm to perform a first drainage pump fault alarm and a second drainage pump fault alarm based on the received electrical signal from one side of the electromagnetic switch C and the timing signal of the timer.

[0021] Preferably, the first branch pipe where the first drain pump is located is equipped with a first check valve, and the second branch pipe where the second drain pump is located is equipped with a second check valve. The first branch pipe and the second branch pipe are connected in parallel, and one end of the first branch pipe and the second branch pipe are both connected to the water receiving pan, and the other end is used to connect to the main drain pipe of the air conditioner.

[0022] Preferably, the inlet ends of the first branch pipe and the second branch pipe are both inserted into the bottom wall of the first water receiving tray, and the inlet of the inlet end is higher than the bottom of the first water receiving tray.

[0023] Preferably, it also includes a second drip tray, which is located at the bottom of the first drip tray to receive condensate overflowing from the first drip tray.

[0024] A control method for a dual-pump receiving plate system, applicable to the dual-pump receiving plate system described in any of the above claims, comprising:

[0025] Obtain the liquid level of the condensate in the first drip tray;

[0026] Determine if the condensate level has risen to equal to or above the preset low water level; if so, start the first drain pump.

[0027] Determine if the condensate level has risen to or above the preset high water level. If so, start the second drain pump.

[0028] Preferably, after the first drainage pump is started, the method further includes:

[0029] The liquid level of condensate in the first water receiving tray is obtained again, and it is determined whether the current liquid level of condensate is lower than the preset low water level. If so, the first water receiving pump is stopped.

[0030] After the second drainage pump is started, the following is also included:

[0031] The liquid level of the condensate in the first water receiving pan is obtained again, and it is determined whether the current condensate liquid level is lower than the preset low water level. If so, the second water receiving pump is stopped.

[0032] Preferably, the method of controlling the start of the second drainage pump also includes: outputting a status reminder for the first drainage pump;

[0033] After the second drain pump is started, the method further includes: after the second drain pump has been operating for a first preset time, obtaining the liquid level of the condensate in the first water receiving pan again, and outputting a status reminder for the second drain pump.

[0034] And / or, the step of determining whether the condensate level has risen to be equal to or higher than the preset high water level, and if so, controlling the second drain pump to start, includes: determining whether the condensate level has risen to be equal to or higher than the preset high water level; if so, delaying for a second preset time to obtain the condensate level position in the first water receiving tray again, and determining whether the condensate level is equal to or higher than the preset high water level again; if so, controlling the second drain pump to start.

[0035] The present invention provides a dual-pump water receiving tray system, wherein a first water receiving tray is provided to receive condensate generated during the operation of an air conditioner. The water receiving tray is a mature existing technology and will not be described in detail here. In conjunction with this, two drain pumps are provided, namely a first drain pump and a second drain pump, and both the first drain pump and the second drain pump are connected to the inner cavity of the first water receiving tray so as to be able to extract the liquid in the first water receiving tray.

[0036] Furthermore, a water level detection component is set up to detect the water level of the liquid in the first water receiving tray in real time, and a control component that connects the water level detection component, the first drainage pump, and the second drainage pump is set up to receive the water level signal generated during the detection process of the water level detection component, and control the start and stop of the first drainage pump or switch to control the start and stop of the second drainage pump according to the water level signal.

[0037] During use, the liquid level in the first water receiving pan is monitored in real time. After the preset water level is detected, the first drain pump is started. After the preset water level is continuously monitored, the second drain pump is started. In this way, if the first drain pump fails, the second drain pump can be used to pump out the condensate in the first water receiving pan, so as to effectively ensure continuous normal drainage and reduce the occurrence of overflow. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of a specific embodiment provided by the present invention;

[0040] Figure 2 This is a schematic diagram of electrical control for a specific embodiment of the present invention.

[0041] Figure label:

[0042] 1-First water receiving tray; 2-First drainage pump; 3-Second drainage pump; 4-Water level detection component; 41-High water level detector; 42-Low water level detector; 5-Control component; 51-Solenoid switch A; 52-Solenoid switch B; 53-Solenoid switch C; 54-Controller; 6-First check valve; 7-Second check valve. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The core of this invention is to provide a water collection tray system for a dual water pump, which can effectively ensure the smooth discharge of condensate. Another core aspect of this invention is to provide a control method applicable to the aforementioned water collection tray system for a dual water pump.

[0045] Please refer to Figure 1 The present invention provides a water receiving tray system with two water pumps, including a first water receiving tray 1, a first drainage pump 2, a second drainage pump 3, a water level detection component 4, and a control component 5.

[0046] The system includes a first water receiving tray 1 for receiving and storing condensate; an inlet of a first drain pump 2 connected to the first water receiving tray 1 for pumping condensate from the first water receiving tray 1; an inlet of a second drain pump 3 connected to the first water receiving tray 1 for pumping condensate from the first water receiving tray 1, and the second drain pump 3 and the first drain pump 2 are connected in parallel; a water level detection component 4 for detecting the water level of the condensate in the first water receiving tray 1; and a control component 5 connected to the first drain pump 2, the second drain pump 3, and the water level detection component 4 to control the start and stop of the first drain pump 2 or the second drain pump 3 based on the detection result of the water level detection component 4.

[0047] like Figure 1 As shown, a first water receiving tray 1 is provided to receive condensate generated during the operation of the air conditioner. The water receiving tray is a mature existing technology and will not be described in detail here. In conjunction with this, two drain pumps are provided, namely the first drain pump 2 and the second drain pump 3. The first drain pump 2 and the second drain pump 3 are both connected to the inner cavity of the first water receiving tray 1 so as to be able to extract the liquid in the first water receiving tray 1.

[0048] Furthermore, a water level detection component 4 is set up to detect the water level of the liquid in the first water receiving pan 1 in real time, and a control component 5 is set up to connect the water level detection component 4, the first drainage pump 2, and the second drainage pump 3 to receive the water level signal generated during the detection process of the water level detection component 4, and control the start and stop of the first drainage pump 2 or switch to control the start and stop of the second drainage pump 3 according to the water level signal.

[0049] It should be noted that there are no restrictions on the type of water level detection component 4, as long as it can meet the water level detection requirements, such as a water level sensor.

[0050] During use, the liquid level in the first water receiving pan 1 is monitored in real time. After the preset water level is detected, the first drain pump 2 is started. After the preset water level is continuously monitored, the second drain pump 3 is started. Thus, when the first drain pump 2 fails, the second drain pump 3 can suck up the condensate in the first water receiving pan 1 to effectively ensure continuous normal drainage and reduce the occurrence of overflow.

[0051] Based on the above embodiments, the water level detection component 4 includes a high water level detector 41 and a low water level detector 42 disposed on the first water receiving pan 1, wherein the position height of the high water level detector 41 is higher than the position height of the low water level detector 42.

[0052] like Figure 1 As shown, in the water level detection component 4, the high water level detector 41 is used to detect when the liquid level of the condensate in the first water receiving pan 1 rises to a preset high water level and outputs a high water level signal. The low water level detector 42 is used to detect when the liquid level of the condensate in the first water receiving pan 1 rises to a preset low water level and outputs a low water level signal. The low water level signal generated by the low water level detector 42 is used to control the start or stop of the first drainage pump 2, and the high water level signal generated by the high water level detector 41 is used to control the start of the second drainage pump 3. During the operation of the second drainage pump 3, the low water level signal generated by the low water level detector 42 is used to control the stop of the second drainage pump 3.

[0053] Based on the above embodiments, the control component 5 includes electromagnetic switches A51, B52, and C53; the high water level detector 41 and the low water level detector 42 are both level switches; the control terminal A1 of electromagnetic switch A51 and the control terminal B1 of electromagnetic switch B52 are connected in parallel and electrically connected to the low water level detector 42 to form a first circuit; the control terminal C1 of electromagnetic switch C53 is connected in series with the high water level detector 41 to form a second circuit, and the first circuit and the second circuit are connected in parallel; one actuating terminal B2 of electromagnetic switch B52 and one actuating terminal C2 of electromagnetic switch C53 are connected in parallel and electrically connected to the branch circuit where the control terminal B1 of electromagnetic switch B52 is located; one actuating terminal A2 of electromagnetic switch A51 is electrically connected to the first drainage pump 2, and the other actuating terminal B3 of electromagnetic switch B52 is electrically connected to the second drainage pump 3.

[0054] In this embodiment, both the high water level detector 41 and the low water level detector 42 are liquid level switches, which can close after the liquid level of the condensate in the first water receiving pan 1 reaches a preset water level to connect the circuits they are connected to.

[0055] Furthermore, in control component 5, such as Figure 2As shown, the control terminal A1 of electromagnetic switch A51 and the control terminal B1 of electromagnetic switch B52 are connected in parallel. The branch circuit where the control terminal B1 of electromagnetic switch B52 is located is provided with the operating terminal B2 of electromagnetic switch B52 and the operating terminal C2 of electromagnetic switch C53 connected in parallel. The low water level detector 42, the control terminal A1 of electromagnetic switch A51, the control terminal B1 and operating terminal B2 of electromagnetic switch B52, and the operating terminal C2 of electromagnetic switch C53 form the first circuit mentioned above. The control terminal C1 of electromagnetic switch C53 is connected in series with the high water level detector 41 to form the second circuit mentioned above. The second circuit is connected in parallel with the first circuit.

[0056] Correspondingly, the actuating terminal A2 of electromagnetic switch A51 is independent of the first and second circuits mentioned above, and is electrically connected to the first drainage pump 2 via a line; the actuating terminal B3 of electromagnetic switch B52 is independent of the first and second circuits mentioned above, and is electrically connected to the second drainage pump 3 via a line.

[0057] In use, the low water level detector 42 closes when it detects that the condensate level in the first water receiving pan 1 is equal to or higher than the preset low water level, energizing the control terminal A1 of the electromagnetic switch A51. This causes its actuating terminal A2 to close, thereby starting the first drain pump 2. Similarly, the high water level detector 41 closes when it detects that the condensate level in the first water receiving pan 1 is equal to or higher than the preset high water level, energizing the control terminal C1 of the electromagnetic switch C53. This causes its actuating terminal C2 to close, energizing the control terminal B1 of the electromagnetic switch B52. This causes both actuating terminals B2 and B3 of the electromagnetic switch B52 to close, thereby starting the second drain pump 3. The second drain pump 3 then drains the condensate from the first water receiving pan 1, lowering the condensate level in the first water receiving pan 1 below the preset high water level, thus achieving a high water level. The low water level detector 41 will disconnect, thereby de-energizing the control terminal C1 of the electromagnetic switch C53, which in turn de-energizes its action terminal C2. Since the low water level detector 42 is still in the closed state, the control terminal B1, action terminal B2, and low water level detector 42 of the electromagnetic switch B52 form an energized circuit. Under the control of the action terminal B3 of the electromagnetic switch B52, the second drain pump 3 will continue to run until the liquid level of the condensate in the first water receiving pan 1 is lower than the preset low water level. Then, the low water level detector 42 will disconnect, de-energizing the control terminal of the electromagnetic switch B52, which in turn de-energizes its action terminal B3, thus stopping the second drain pump 3. Furthermore, during the continuous operation of the air conditioner, the low water level detector 42 will close again after detecting that the liquid level of the condensate in the first water receiving pan 1 is equal to or higher than the preset low water level, thereby restarting the second drain pump 3.

[0058] Furthermore, a maintenance switch is set at the actuating end A2 of the electromagnetic switch A51 and the branch circuit where the first drainage pump 2 is located. When in use, after the first drainage pump 2 is alarmed for a fault, before manual maintenance, the maintenance switch can be opened to disconnect the power to the first drainage pump 2. After the manual maintenance is completed, the maintenance switch is closed so that the first drainage pump 2 can continue to operate or stop based on the detection result of the water level detection component 4.

[0059] Based on the above embodiments, the control component 5 also includes a controller 54. The other actuating end C3 of the electromagnetic switch C53 is electrically connected to the controller 54. The controller 54 has a timer, an alarm and a processor. The timer and the alarm are both signal-connected to the processor so as to control the alarm to perform a fault alarm for the first drainage pump 2 and the second drainage pump 3 according to the received electrical signal on one side of the electromagnetic switch C53 and the timing signal of the timer.

[0060] like Figure 2 As shown, the controller 54 is configured such that the actuating terminal C3 of the electromagnetic switch C53 is independent of the first and second circuits mentioned above, and the controller 54 is electrically connected to the actuating terminal C3 of the electromagnetic switch C53. Thus, the controller 54 can receive the electrical signal transmitted through the electromagnetic switch C53. Furthermore, in the controller 54, the timer starts timing after receiving the electrical signal, and the processor controls the alarm to sound an alarm. With this configuration, the change in liquid level within a first preset time is used to control whether to trigger a fault alarm for the first drainage pump 2 and the second drainage pump 3. This not only helps to avoid overflow caused by the failure of the first drainage pump 2 and the second drainage pump 3 to provide feedback, but also avoids false alarms caused by the pumping capacity of the drainage pumps and the height difference between the high and low water level switches.

[0061] It should be noted that there are no restrictions on the type of alarm, as long as it can perform the above functions, such as warning lights or buzzers.

[0062] Based on the above embodiment, the first branch pipe where the first drain pump 2 is located is provided with a first check valve 6, and the second branch pipe where the second drain pump 3 is located is provided with a second check valve 7. The first branch pipe and the second branch pipe are connected in parallel, and one end of the first branch pipe and the second branch pipe are both connected to the water receiving pan, and the other end is used to connect to the main drain pipe of the air conditioner.

[0063] like Figure 1As shown, a first check valve 6 is installed in the first branch pipe where the first drain pump 2 is located, so that the first drain pump 2 can draw out the condensate in the first drip tray 1 and discharge it to the main drain pipe of the air conditioner; similarly, a second check valve 7 is installed in the second branch pipe where the second drain pump 3 is located, so that the second drain pump 3 can draw out the condensate in the first drip tray 1 and discharge it to the main drain pipe of the air conditioner. Since there is usually only one main drain pipe in the air conditioner, the outlets of the first drain pump 2 and the second drain pump 3 need to be connected to the main drain pipe so that the condensate can be discharged to the outside. Compared with installing a check valve on the main drain pipe of the air conditioner, this setting can prevent the condensate in the main drain pipe from flowing back to the first drip tray 1, and can also prevent the condensate in the first branch pipe and the condensate in the second branch pipe from flowing into each other, effectively avoiding the frequent operation of the first drain pump 2 and the second drain pump 3.

[0064] Preferably, the first check valve 6 is located on the outlet side of the first drain pump 2, and the second check valve 7 is located on the outlet side of the second drain pump 3, so as to effectively reduce the reversal of the first drain pump 2 and the second drain pump 3.

[0065] Based on the above embodiment, the inlet ends of the first branch pipe and the second branch pipe are both inserted into the bottom wall of the first water receiving pan 1, and the water inlet of the inlet end is higher than the bottom of the first water receiving pan 1.

[0066] refer to Figure 1 The directions shown are as follows: Figure 1 As shown, the left inlet end of the first branch pipe is inserted into the first water receiving tray 1, and the inner cavity of the water receiving tray 1 is connected through the water inlet so that the condensate in the first water receiving tray 1 can be extracted by the first drain pump 2; similarly, as Figure 1 As shown, the left inlet end of the second branch pipe is connected to the first water receiving pan 1, and the inner cavity of the water receiving pan 1 is connected through the water inlet so that the condensate in the first water receiving pan 1 can be extracted by the second drain pump 3.

[0067] Furthermore, the left inlet end of the first branch pipe extends into the interior of the first water receiving tray 1, and the water inlet on the left inlet end of the first branch pipe is higher than the bottom of the first water receiving tray 1; similarly, the left inlet end of the second branch pipe extends into the interior of the first water receiving tray 1, and the water inlet on the left inlet end of the second branch pipe is higher than the bottom of the first water receiving tray 1, in order to reduce the occurrence of sediment impurities entering the first branch pipe and the second branch pipe, and reduce the possibility of blockage of the water receiving tray system.

[0068] Based on the above embodiment, a second water receiving tray is also included, which is located at the bottom of the first water receiving tray 1 to receive the condensate overflowing from the first water receiving tray 1.

[0069] In this embodiment, the water receiving pan system is provided with a double water receiving pan, wherein the first water receiving pan 1 is located above the second water receiving pan, and the top of the second water receiving pan is open, so as to receive the condensate overflowing from the first water receiving pan 1 above in an emergency when both the first drain pump 2 and the second drain pump 3 fail, and further prevent the condensate from overflowing onto the floor.

[0070] In addition to the aforementioned dual-pump water receiving tray system, the present invention also provides a control method applicable to the dual-pump water receiving tray system disclosed in the above embodiments, the control method comprising the following steps:

[0071] Obtain the liquid level of the condensate in the first drip tray 1;

[0072] Determine whether the condensate level has risen to equal to or higher than the preset low water level. If so, control the first drain pump 2 to start.

[0073] Determine if the condensate level has risen to or above the preset high water level. If so, start the second drain pump 3.

[0074] In use, the water level detection component 4 detects the liquid level of condensate in the first water receiving pan 1 in real time. As condensate continuously accumulates in the first water receiving pan 1, when the liquid level of condensate rises to the level equal to or higher than the preset low water level, the first drain pump 2 is started to pump out the condensate in the first water receiving pan 1; or, when the liquid level of condensate rises to the level equal to or higher than the preset high water level, the second drain pump 3 is started to pump out the condensate in the drain pan. This setting effectively improves drainage performance, and if the first drain pump 2 fails to pump water, the backup second drain pump 3 can be started when the condensate rises to the level equal to or higher than the preset high water level to effectively prevent condensate from overflowing.

[0075] Based on the above embodiment, after controlling the first drain pump 2 to start, the method further includes: obtaining the liquid level of condensate in the first water receiving pan 1 again, determining whether the current condensate liquid level is lower than the preset low water level, and if so, controlling the first water receiving pump 2 to stop.

[0076] During use, while the first drain pump 2 is working, the liquid level of the condensate in the first water receiving pan 1 is continuously monitored until the liquid level of the condensate in the first water receiving pan 1 is lower than the preset low water level. Then, the first drain pump 2 can be controlled to stop working. After the first drain pump 2 stops working, the condensate in the first water receiving pan 1 continues to accumulate. The liquid level of the condensate in the first water receiving pan 1 is monitored again to determine whether the current condensate level has risen to be equal to or higher than the preset low water level. If so, the first drain pump 2 can be controlled to start again to pump the condensate in the first water receiving pan 1 again.

[0077] Based on the above embodiment, after controlling the second drain pump 3 to start, the method further includes: obtaining the liquid level of the condensate in the first water receiving pan 1 again, determining whether the current condensate liquid level is lower than the preset low water level, and if so, controlling the second water receiving pump 3 to stop.

[0078] Similarly, during use, while the second drain pump 3 is working, the liquid level of the condensate in the first water receiving pan 1 is continuously monitored until the liquid level of the condensate in the first water receiving pan 1 is lower than the preset low water level. Then, the second drain pump 3 can be controlled to stop working. After the second drain pump 3 stops working, the condensate in the first water receiving pan 1 continues to accumulate. The liquid level of the condensate in the first water receiving pan 1 is monitored again to determine whether the current condensate level has risen to be equal to or higher than the preset high water level. If so, the second drain pump 3 can be controlled to start again to pump the condensate in the first water receiving pan 1 again.

[0079] Based on the above embodiment, while controlling the start of the second drainage pump 3, it also includes: outputting a status reminder of the first drainage pump 2; it can be understood that after the first drainage pump 2 malfunctions, a status reminder of the first drainage pump 2 can be given, such as a buzzer or a light, to remind personnel to inspect the first drainage pump 2.

[0080] Furthermore, after the second drain pump 3 is started, the system also includes: after the second drain pump 3 has been operating for a first preset time, acquiring the liquid level of the condensate in the first water receiving pan 1 again, and outputting a status reminder for the second drain pump 3. It can be understood that after the second drain pump 3 has been operating for the first preset time, the system feeds back the operating status of the second drain pump 3 based on the re-detected liquid level. If it cannot extract enough condensate from the first water receiving pan 1 to keep the condensate level equal to or higher than the preset high water level, the second drain pump 3 is considered faulty, and a fault alarm signal is issued, such as a buzzer or light, to remind personnel to inspect the second drain pump 3. Conversely, if it can extract enough condensate from the second water receiving pan to lower the condensate level below the preset high water level, the second drain pump 3 is operating normally, and a normal operation signal is issued, such as clearing the previously output fault alarm signal for the second drain pump 3.

[0081] Based on the above embodiments, determining whether the condensate level has risen to equal to or higher than the preset high water level, and if so, controlling the second drain pump 3 to start, includes: determining whether the condensate level has risen to equal to or higher than the preset high water level, and if so, delaying for a second preset time to obtain the condensate level position in the first water receiving tray 1 again, and determining whether the condensate level is equal to or higher than the preset high water level again, and if so, controlling the second drain pump 3 to start again.

[0082] During operation, if the level of condensate in the first water receiving pan 1 exceeds the expected preset high water level during the operation of the first drain pump 2, a second preset time is set. Based on the position of the water level in the first water receiving pan 1 detected again after the second preset time, the system controls whether to start the second drain pump 3 and whether to issue a fault alarm for the first drain pump 2. This reduces the possibility of misjudging the first drain pump 2 due to factors such as the pump's pumping capacity and the height difference between the high and low water level switches, and avoids false alarms or failure to issue alarms, effectively improving alarm accuracy.

[0083] Based on the above embodiments, the alarm time for the first drainage pump 2 and the alarm time for the second drainage pump 3 are different to help staff distinguish which drainage pump is malfunctioning.

[0084] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the terms "upper surface," "lower surface," "top," and "bottom" and the directional terms "upper," "lower," "left," and "right" mentioned above are defined based on the accompanying drawings in the specification.

[0085] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0086] The above provides a detailed description of the dual-pump water receiving tray system and its control method provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A water receiving tray system with dual water pumps, characterized in that, include: The first water receiving tray (1) is used to receive and store condensate; The first drainage pump (2) has its inlet connected to the first water receiving pan (1) to draw condensate from the first water receiving pan (1); The second drain pump (3) has its inlet connected to the first water receiving pan (1) to draw condensate from the first water receiving pan (1), and the second drain pump (3) and the first drain pump (2) are connected in parallel. The water level detection component (4) is used to detect the water level of the condensate in the first water receiving pan (1); The control component (5) is connected to the first drainage pump (2), the second drainage pump (3) and the water level detection component (4) to control the start and stop of the first drainage pump (2) or the second drainage pump (3) according to the detection result of the water level detection component (4). The water level detection component (4) includes a high water level detector (41) and a low water level detector (42) disposed on the first water receiving pan (1), wherein the high water level detector (41) is positioned at a higher height than the low water level detector (42); The control component (5) includes electromagnetic switch A (51), electromagnetic switch B (52) and electromagnetic switch C (53), and the high water level detector (41) and the low water level detector (42) are both liquid level switches; The control terminal A1 of the electromagnetic switch A (51) and the control terminal B1 of the electromagnetic switch B (52) are connected in parallel and electrically connected to the low water level detector (42) to form a first circuit; The control terminal C1 of the electromagnetic switch C (53) is connected in series with the high water level detector (41) to form a second circuit, and the first circuit and the second circuit are connected in parallel. One actuating terminal B2 of the electromagnetic switch B (52) and one actuating terminal C2 of the electromagnetic switch C (53) are connected in parallel and electrically connected to the branch circuit where the control terminal B1 of the electromagnetic switch B (52) is located. One actuating end A2 of the electromagnetic switch A (51) is electrically connected to the first drainage pump (2), and the other actuating end B3 of the electromagnetic switch B (52) is electrically connected to the second drainage pump (3).

2. The water receiving tray system for dual water pumps according to claim 1, characterized in that, The control component (5) also includes a controller (54). The other actuating end C3 of the electromagnetic switch C (53) is electrically connected to the controller (54). The controller (54) has a timer, an alarm and a processor. The timer and the alarm are both signal-connected to the processor so as to control the alarm to perform a fault alarm for the first drainage pump (2) and a fault alarm for the second drainage pump (3) according to the electrical signal received from one side of the electromagnetic switch C (53) and the timing signal of the timer.

3. The water receiving tray system for dual water pumps according to claim 1, characterized in that, The first branch pipe of the first drain pump (2) is provided with a first check valve (6), and the second branch pipe of the second drain pump (3) is provided with a second check valve (7). The first branch pipe and the second branch pipe are connected in parallel, and one end of the first branch pipe and the second branch pipe are connected to the water receiving pan, and the other end is used to connect to the main drain pipe of the air conditioner.

4. The water receiving tray system for dual water pumps according to claim 3, characterized in that, The inlet ends of the first branch pipe and the second branch pipe are both inserted into the bottom wall of the first water receiving pan (1), and the inlet of the inlet end is higher than the bottom of the first water receiving pan (1).

5. The water receiving tray system for dual water pumps according to claim 1, characterized in that, It also includes a second drip tray, which is located at the bottom of the first drip tray (1) to receive the condensate overflowing from the first drip tray (1).

6. A control method for a dual-pump receiving plate system, applicable to the dual-pump receiving plate system according to any one of claims 1-5, characterized in that, include: Obtain the liquid level of the condensate in the first water receiving tray (1); Determine whether the condensate level has risen to equal or higher than the preset low water level. If so, control the first drain pump (2) to start. Determine whether the condensate level has risen to equal or higher than the preset high water level. If so, control the second drain pump (3) to start.

7. The control method for the dual-pump receiving system according to claim 6, characterized in that, After the control of the first drainage pump (2) is started, it also includes: Once the liquid level of the condensate in the first water receiving pan (1) is obtained again, it is determined whether the current liquid level of the condensate is lower than the preset low water level. If so, the first water receiving pump (2) is stopped. After the second drainage pump (3) is started, the following is also included: Once the liquid level of the condensate in the first water receiving pan (1) is obtained again, it is determined whether the current liquid level of the condensate is lower than the preset low water level. If so, the second water receiving pump (3) is stopped.

8. The control method for the dual-pump receiving system according to claim 7, characterized in that, The control of starting the second drainage pump (3) also includes: outputting a status reminder of the first drainage pump (2); After the second drain pump (3) is started, the method further includes: after the second drain pump (3) has been working for a first preset time, the liquid level of the condensate in the first water receiving pan (1) is obtained again, and the status reminder of the second drain pump (3) is output. And / or, the determination of whether the liquid level of the condensate has risen to equal to or higher than the preset high water level, and if so, controlling the second drain pump (3) to start, includes: determining whether the liquid level of the condensate has risen to equal to or higher than the preset high water level, and if so, delaying for a second preset time to obtain the liquid level position of the condensate in the first water receiving tray (1) again, and determining whether the liquid level of the condensate is equal to or higher than the preset high water level again, and if so, controlling the second drain pump (3) to start again.

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