A positive pressure air conditioning condensate drainage system

Abstract

The present invention discloses a positive pressure air conditioning condensate drainage system, comprising a positive pressure air conditioner and a float drainage device, wherein the positive pressure air conditioner comprises a return air valve, an air supply valve, a fan, an air cooler, a water receiving tray, etc., wherein the air cooler and the water receiving tray are located in the positive pressure section on the exhaust side of the fan; the float drainage device is respectively connected to the drainage port of the water receiving tray of the air conditioner and the negative pressure section of the air conditioner, and utilizes the positive and negative pressure difference of the air conditioner and the height difference of the water tray to smoothly discharge the air conditioning condensate out of the air conditioner.

Description

Technical Field

[0001] The invention relates to the field of air conditioning condensate drainage systems, in particular to a positive pressure air conditioning condensate drainage system. Background Art

[0002] When the air is cooled in the air conditioner, condensed water will inevitably be produced, which must be discharged smoothly to the outside of the air conditioner to avoid accumulation inside the air conditioner. Inside the air conditioner, if the fan is located in front of the air cooler, the area where the air cooler is located is a positive pressure section, that is, the pressure is higher than the external environment, and the air conditioning system is a positive pressure air conditioner. Since the air cooler is located in the positive pressure section, the pressure of the discharged condensed water is higher than the external environment. If it is not controlled, the pressure of the sewer pipe connected to the condensate discharge pipeline of the air conditioner will be increased, thereby affecting the normal drainage of other rooms to the sewer pipe. The way to solve this problem in the prior art is to set a horizontal S-shaped water trap and use the water column pressure therein to offset the positive or negative pressure of the air conditioner. However, this method also has some shortcomings, such as water will always be stored in the horizontal S-bend, and if it is not cleaned, the pipe will easily freeze and crack in winter. Summary of the invention

[0003] The object of the present invention is to provide a positive pressure air conditioner condensate drainage system to solve the problem of using an S-shaped water trap to drain condensate in the prior art positive pressure air conditioner.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A positive pressure air conditioner condensate drainage system comprises a float drainage device, a drainage interface is provided at the bottom of the float drainage device, a drainage float valve is installed inside the float drainage device at the connection point of the drainage interface, the float drainage device is connected to the positive pressure section of the positive pressure air conditioner through a water inlet pipe, an exhaust interface is provided at the top of the float drainage device, and the exhaust interface is connected to the negative pressure section of the positive pressure air conditioner through an exhaust pipe.

[0006] Furthermore, the water inlet pipe is connected to a receiving tray below the air cooler in the positive pressure section of the positive pressure air conditioner.

[0007] Furthermore, the water inlet pipe is connected to one end of the positive pressure section of the positive pressure air conditioner, which is higher than the water inlet pipe connected to one end of the float drainage device.

[0008] Furthermore, the exhaust interface at the top of the float drainage device is connected to the corresponding end of the exhaust pipe through a flow regulating valve.

[0009] Furthermore, the maximum floating height of the float in the float valve is not less than the water column height converted by the maximum pressure difference between the positive pressure section and the negative pressure section of the positive pressure type air conditioner.

[0010] The present invention uses a float drainage device for a positive pressure air conditioner, utilizes the positive and negative pressure difference of the air conditioner, and introduces the water accumulated in the positive pressure section of the air cooler into the float drainage device through a pipeline. Due to the pressure difference, the condensed water level in the float drainage device will be higher than the water level in the positive pressure section. The specific height difference is the water column height converted by the positive and negative pressure difference of the air conditioner, and the internal height of the float drainage device is greater than the water column height converted by the pressure difference between the positive and negative pressure sections of the air conditioner, ensuring that the condensed water of the air conditioner does not enter the negative pressure section of the air conditioner. When the water level in the float drainage device is high enough to make the float in the drainage float valve float up, so that the drainage interface at the bottom of the float drainage device is connected, the water in the float drainage device is discharged to the external drainage interface under the action of the water column height. When the water level in the float drainage device drops to a level sufficient to make the float fall and close the drainage interface, the drainage stops and the water level continues to rise.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. It does not increase extra energy consumption, has no redundant motion and electronic control components, and directly uses the positive and negative pressure difference generated by the fan to drive the air conditioning condensate to raise the water level in the float drainage device, so that it can be discharged smoothly.

[0013] 2. After the air conditioner fan stops, it can still drain the remaining water to avoid freezing and cracking of the pipes in winter.

[0014] 3. The structure is simple, there is no technical application barrier, and the location of the float drainage device is flexible and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural principle diagram of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, a positive pressure air conditioning condensate drainage system of the present invention includes a positive pressure air conditioner and a float drainage device 1, the positive pressure air conditioner includes a return air valve 3, an air supply valve 4, a fan 5, an air cooler 6, and a water receiving tray 2 installed on the air conditioner body, wherein the fan 5 is located in front of the air cooler 6, so that the air cooler 6 is located in the positive pressure section, the water receiving tray 2 is located below the air cooler 6 for receiving condensate, the return air valve 3 is connected and installed to the negative pressure section, and the air supply valve 4 is connected and installed to the positive pressure section.

[0018] The float drainage device 1 is provided with an exhaust port 101 at the top and a drain port 103 at the bottom. A drain float valve 102 is installed inside the float drainage device at the connection point of the drain port 103. A water inlet port 104 is provided at the lower part of one side of the float drainage device, and an exhaust port 101 is provided at the top of the float drainage device. The water inlet port 104 is connected to the water tray drain port 201 at the bottom of the water receiving tray 2 of the positive pressure section of the air conditioner through the water inlet pipe 7. The exhaust port 101 is connected to the exhaust pipe 8 through the flow regulating valve 106, and the exhaust pipe is connected to the negative pressure section of the air conditioner.

[0019] The processed air flows through the return air valve 3, the fan 5, the air cooler 6, and the air supply valve 4 in sequence. The air conditioning condensate generated when the air flows through the air cooler 6 is collected in the water receiving tray 2 below, and then flows from the water tray drain port 201 through the pipe 7 and the water inlet interface 104 of the float drain device 1 into the float drain device 1. In order to make the air conditioning condensate flow smoothly from the water receiving tray 2 to the float drain device 1, the pipe 7 can be set with a certain slope to ensure that the height of the position where the pipe 7 connects to the water tray drain port 2 is higher than the water inlet interface 104 of the float drain device 1.

[0020] In the float drainage device 1, since the water inlet interface 104 and the top exhaust interface 101 are respectively connected to the positive pressure section and negative pressure section of the air conditioner, the air conditioning condensate can rise to a certain liquid level height in the float drainage device 1 under the drive of the positive and negative pressure differences. The height can reach the water column height converted by the pressure difference between the positive pressure section and the negative pressure section inside the air conditioner.

[0021] In the float drainage device 1, the float in the bottom drainage float drainage valve 102 will open as the water level rises. Under the action of the pressure in the float drainage device 1 and the height of the air-conditioning condensate, the air-conditioning condensate will be discharged from the bottom drainage interface 103.

[0022] In order to maintain the pressure in the float drainage device 1 within a suitable range, a flow regulating valve 106 is provided on the pipe 8 connected to the negative pressure section of the air conditioner by the top exhaust interface 101. By adjusting the opening of the flow regulating valve 106, the pressure in the float drainage device 1 can be higher than the atmospheric pressure of the external environment, so that the air conditioning condensate in the float drainage device 1 can be discharged smoothly. In addition, by adjusting the opening of the flow regulating valve 106, less air can flow from the positive pressure section of the air conditioner through the pipeline 7, the float drainage device 1 and the pipeline 8 to enter the negative pressure section of the air conditioner, thereby fully reducing the bypass flow of the air and reducing the power consumption of the fan.

[0023] In addition, when the fan 5 stops running, the air conditioning condensate remaining in the water receiving pan 2 of the air conditioner will enter the pipeline 7 from the water pan drain port 201 under the action of gravity, and then enter the float drainage device 1 to raise the water level, so that the bottom drainage float valve 102 is opened, and the air conditioning condensate is discharged from the bottom drainage interface 103 to the drainage pipe. Therefore, the present invention can ensure that the air conditioning condensate can be discharged cleanly regardless of whether the positive pressure air conditioner is in operation or stopped state, so that water accumulation and freezing of the pipeline will not occur when the air conditioner is stopped in winter.

[0024] The present invention equips a positive pressure air conditioner with a float drainage device 1 in the above manner, and utilizes the positive and negative pressures generated by the fan to drive the air conditioning condensate to be smoothly discharged from the air conditioner through the float drainage device; and when the fan is not running, the air conditioning condensate can also be discharged.

[0025] The present invention can be used not only for positive pressure air conditioners, but also for devices such as refrigeration dehumidifiers with the same structural form. Air conditioning condensate discharge systems using the same principle are also protected by the rights of the present invention.

[0026] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A positive pressure air conditioning condensate drainage system, characterized in that: The float drainage device comprises a drainage interface at the bottom of the float drainage device, a drainage float valve is installed inside the float drainage device at the connection position of the drainage interface, the float drainage device is connected to the positive pressure section of the positive pressure air conditioner through a water inlet pipe, and an exhaust interface is provided at the top of the float drainage device, and the exhaust interface is connected to the negative pressure section of the positive pressure air conditioner through an exhaust pipe; The water inlet pipe is connected to a receiving tray below the air cooler in the positive pressure section of the positive pressure air conditioner; The exhaust interface at the top of the float drainage device is connected to the corresponding end of the exhaust pipe through a flow regulating valve; The maximum floating height of the float in the float valve is not less than the water column height converted by the maximum pressure difference between the positive pressure section and the negative pressure section of the positive pressure type air conditioner.

2. A positive pressure air conditioning condensate removal system according to claim 1, characterized in that: The water inlet pipe is connected to one end of the positive pressure section of the positive pressure type air conditioner, which is higher than the water inlet pipe and connected to one end of the float drainage device.

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