Air conditioner drainage system

Abstract

The utility model discloses an air conditioner drainage system, and belongs to the technical field of industrial air conditioner units. The drainage system comprises water collecting base plates of a plurality of functional modules, the water collecting base plates are obliquely arranged and sequentially connected, drainage holes of the water collecting base plates are communicated with a water collecting floor drain through a drainage pipe system, the drainage pipe system comprises a plurality of drainage pipes connected with one drainage hole and / or a plurality of drainage holes, and the water collecting floor drain penetrates through the building structure. The inclined water collecting base plate is adopted to enable water needing to be drained to be automatically gathered towards the water draining hole, and the problem of water accumulation caused by a traditional flat welding base plate is effectively solved; the drainage pipe system is used for conducting independent drainage on each functional module, the adjacent drainage holes with the collection pressure difference smaller than the channeling pressure difference threshold value are formed in the same drainage pipe in the drainage pipe system as many as possible, and the input cost of the drainage pipe system is reduced; the output end of the drainage pipe system is gathered into a water collecting floor drain penetrating through a building body structure, and a new direction is provided for drainage energizing.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial air-conditioning units, in particular to an air-conditioning drainage system. Background Art

[0002] From the moment air enters the unit to the moment it reaches the fan, an industrial air conditioning unit consists of seven functional modules: the air intake section, primary cooling section, surface cooling section, humidification section, heating section, intermediate section, and fan front section. Each workshop adjusts the functional strength of each module based on its needs.

[0003] Currently, drainage problems in industrial air conditioning units are impacted by issues like deformation in the flat bottom plate welding, negative pressure from the fans, and pressure differentials between functional sections. This leads to cross-flow of air and water between these sections, resulting in poor drainage and water accumulation on the bottom plate. If the drainage system is not optimized, negative pressure may develop within the air conditioning unit during operation, preventing condensate from draining properly and causing water droplets to drip out. When the unit stops operating, the negative pressure disappears, and the condensate stored within the unit, under the influence of gravity, instantly leaks out through the gaps around the air conditioning unit body.

[0004] As far as the existing technology is concerned, in order to solve the problem of air and water leakage between the functional sections, the existing air-conditioning units mostly adopt the means of independent drainage of each functional section, but this design faces the problem of independently setting up drip drains at the drainage end or using a large floor drain for centralized drainage. Of these two drainage methods, the cost of exploiting multiple small drip drains and exploiting a large floor drain is relatively high, resulting in the difficulty and high cost of laying out the air-conditioning unit. In order to solve the problem of poor drainage, the existing air-conditioning units mostly adopt the method of raising the base of the unit to increase the height of the drainage outlet of each functional section inside the unit, thereby increasing the ability to overcome the negative pressure inside the fan, but the investment cost of the metal base is extremely high. Utility Model Content

[0005] Purpose of the utility model: to provide an air conditioning drainage system to solve the above-mentioned problems existing in the prior art.

[0006] Technical solution: An air-conditioning drainage system, comprising a water-collecting chassis with several functional modules, wherein the several water-collecting chassis are arranged at an angle and connected in sequence, and is characterized in that the drainage holes of the water-collecting chassis are connected to the water-collecting floor drain through a drainage pipe system, and the drainage pipe system comprises a plurality of drainage pipes connected to one drainage hole and / or connected to multiple drainage holes, and the water-collecting floor drain is arranged through the building structure.

[0007] Furthermore, the drainage pipe connecting the multiple drainage holes is a manifold, and the maximum pressure difference of multiple water inlet ends on the manifold is less than a water leakage pressure difference threshold, and the water leakage pressure difference threshold is ΔP1.

[0008] Furthermore, the water collecting floor drain is arranged in a reserved hole of the building structure, and the water collecting floor drain includes a cover plate, a water storage bucket and an overflow pipe. The cover plate is installed on the top of the water storage bucket, and the overflow pipe is arranged through the bottom of the water storage bucket. The water collecting floor drain is arranged on the building structure through the cover plate.

[0009] Furthermore, the drainage end of the drainage pipe system extends through the pipe hole on the cover plate into the water stored in the water storage barrel. The drainage pipe system and the overflow pipe form a drainage seal in the water storage barrel, and the height difference between the bottom surface of the water storage barrel and the drainage hole is greater than the safety height threshold.

[0010] Furthermore, the safety height threshold is H, H>2H1>H1+H2=2k1*ΔP2 / 9.81; wherein,

[0011] H1 is the height of the drainage seal when the air conditioner is not running;

[0012] H2 is the height of the liquid in the drainage pipe system caused by the negative pressure inside the air conditioner when the air conditioner is running;

[0013] k1 is the water seal safety factor of one; ΔP2 is the pressure difference between the inside and outside of the air conditioner.

[0014] Furthermore, an overflow cover is installed on the top of the overflow pipe, and a flap is provided on the cover, and the flap is arranged above the overflow cover.

[0015] Furthermore, the water collection chassis is divided into a functional area and a non-functional area by partitions, and drainage holes are provided at the bottom of the functional area and the non-functional area.

[0016] Beneficial effects: The utility model adopts an inclined water collection bottom plate to automatically gather the water that needs to be discharged to the drainage hole, effectively solving the water accumulation problem caused by the traditional flat welded bottom plate; the drainage pipe system is used to independently drain each functional module, avoiding air and water leakage in each functional module, and the drainage pipe system collects as many adjacent drainage holes as possible on the same drainage pipe with a pressure difference less than the water leakage pressure difference threshold, reducing the investment cost of the drainage pipe system; the output end of the drainage pipe system is collected in a water collection floor drain that runs through the building structure, avoiding the layout of multiple floor drains, and the water collection floor drain provides space for extending the drainage pipe system from downward, providing a new direction for drainage empowerment, which is more economical and efficient than the existing drainage empowerment method of raising the position of the drainage hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the surface cooling section of the utility model;

[0019] Figure 3This is a schematic diagram of the internal structure of the water collecting floor drain in the utility model;

[0020] Figure 4 This utility model is Figure 1 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the drainage seal of the utility model when the air conditioner is not running;

[0022] Figure 6 It is a schematic diagram of the drainage seal of the utility model when the air conditioner is running.

[0023] The figures are marked as follows: 1. Air inlet section; 2. Primary effect section; 3. Surface cooling section; 31. Module box; 32. Functional area; 33. Drain hole; 34. Non-functional area; 35. Partition; 36. Inspection door; 37. Disassembly panel; 4. Humidification section; 5. Heating section; 51. Coil; 6. Middle section; 7. Fan front section; 8. Drainage pipe system; 81. Straight pipe; 82. Drain pipe; 9. Water collection floor drain; 91. Cover plate; 92. Flap plate; 93. Pipe layout hole; 94. Water storage bucket; 95. Overflow pipe; 96. Overflow cover; 0. Building structure. DETAILED DESCRIPTION

[0024] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0025] like Figure 1 As shown, an air-conditioning drainage system includes a water-collecting chassis with several functional modules. Several of the water-collecting chassis are arranged at an angle and connected in sequence. The drainage holes 33 of the water-collecting chassis are connected to the water-collecting floor drain 9 through the drainage pipe system 8. The drainage pipe system 8 includes several drainage pipes connected to one drainage hole 33 and / or connected to multiple drainage holes 33. The water-collecting floor drain 9 is arranged through the building structure 0.

[0026] The utility model adopts an inclined water collection bottom plate to automatically gather the water that needs to be discharged to the drainage hole 33, effectively solving the water accumulation problem caused by the traditional flat-welded bottom plate; the drainage pipe system 8 is used to independently drain each functional module, avoiding air and water leakage in each functional module, and the drainage pipe system 8 collects as many adjacent drainage holes 33 with a pressure difference less than the water leakage pressure difference threshold as possible on the same drainage pipe, reducing the investment cost of the drainage pipe system 8; the output end of the drainage pipe system 8 is collected into a water collection floor drain 9 that runs through the building structure 0, avoiding the layout of multiple floor drains, and the water collection floor drain 9 provides space for the drainage pipe system 8 to extend downward, providing a new direction for drainage empowerment, which is more economical and efficient than the existing drainage empowerment method of raising the position of the drainage hole 33.

[0027] Specifically, the surface cooling section 3 and humidification section 4 in an industrial air conditioning unit are the functional modules that produce the most water. The condensed water from the surface cooling section 3 hardly diffuses to other functional modules, while the water from the humidification section 4 forms a fine mist that not only remains in the humidification section 4 but also partially drifts to the heating section 5. Rain and snow from the outside can enter the air conditioning unit through the air intake section, so some units also have water in the air intake section 1 and primary effect section 2. Therefore, each functional module has a different drainage environment and requires relatively independent drainage pipes.

[0028] Among them, the drainage pipe connecting multiple drainage holes 33 is a drainage pipe 82, and the maximum pressure difference of multiple water inlet ends on the drainage pipe 82 is less than the water leakage pressure difference threshold, and the water leakage pressure difference threshold is ΔP1, |ΔP1|<150Pa. The drainage pipe connected to one drainage hole 33 is a straight drainage pipe 81. The closer the functional module is to the fan, the greater the internal negative pressure. If the drainage holes with large pressure differences are collected on a drainage pipe 82, the accumulated water will tend to flow to the low-pressure area, which will not only fail to achieve stable drainage, but also aggravate water leakage between the functional modules. Therefore, it is necessary to limit the pressure difference of the drainage holes 33 on the drainage pipe 82. The design of the drainage pipe 82 reduces the number of pipelines and reduces the requirements for the pipeline accommodation capacity of the water collection floor drain 9.

[0029] In particular, there are still more subtle differences within the functional modules, such as Figure 4 As shown, the thickness of the functional component coil 51 in the heating section 5 will affect the size of the negative pressure on both sides thereof. When the thickness of the coil 51 is larger, the pressure difference between different drainage holes 33 in the heating section 5 will increase accordingly. If it is less than the water leakage pressure difference threshold, the water can be converged. Otherwise, multiple straight pipes 81 will need to be used between the same functional modules.

[0030] like Figure 1 and Figure 3As shown, the water collecting floor drain 9 is arranged in a reserved hole of the building structure 0. The water collecting floor drain 9 includes a cover plate 91, a water storage bucket 94 and an overflow pipe 95. The cover plate 91 is installed on the top of the water storage bucket 94, and the overflow pipe 95 is arranged through the bottom of the water storage bucket 94. The water collecting floor drain 9 is arranged on the building structure 0 through the cover plate 91. Industrial air-conditioning units are usually installed on the top floor of a workshop. Raising the unit to solve the problem of poor drainage not only requires excessive frame metal consumption, but also is extremely inconvenient to transport the frame to the top floor. The reserved hole provides the unit with sufficient drainage height, avoiding the introduction of the frame structure required to raise the unit, and is optimized in terms of cost and construction.

[0031] like Figure 3 As shown, the drainage end of the drainage pipe system 8 extends through the pipe hole 93 on the cover plate 91 to the water storage in the water storage barrel 94. The drainage pipe system 8 and the overflow pipe 95 form a drainage seal in the water storage barrel 94. The height difference between the bottom surface of the water storage barrel 94 and the drainage hole 33 is greater than the safety height threshold.

[0032] The safety height threshold is H, H>2H1>H1+H2=2k1*ΔP2 / 9.81; wherein,

[0033] H1 is the height of the drainage seal when the air conditioner is not running;

[0034] H2 is the height of the liquid in the drainage pipe system 8 caused by the negative pressure in the air conditioner when the air conditioner is running;

[0035] k1 is the water seal safety factor, 0.6<k1<0.8; ΔP2 is the pressure difference between the inside and outside of the air conditioner.

[0036] H>2H1>H1+H2=2k1*ΔP2 / 9.81 is based on Bernoulli's principle. Specifically,

[0037] For incompressible fluids, during the flow process, the potential energy, kinetic energy, static pressure energy per unit mass of fluid at different cross sections, as well as the external input energy and the energy loss of the fluid conform to the formula:

[0038]

[0039] Where: Z is the potential energy of 1 kg of fluid; u is the flow velocity; g is the acceleration due to gravity; P is the pressure; ρ is the fluid density; H e The effective pressure head provided by the conveying equipment to 1N fluid; H f is the pressure head loss;

[0040] For circulating air conditioning drainage, the flow rate in the discharge pipe can be considered to be the same. At the same time, since the length of the discharge pipe is generally short, the pressure head loss is ignored, so the above can be simplified to:

[0041]

[0042] From the above formula, we can get that to design drainage, we must first calculate the pressure difference ΔP inside and outside the air conditioner. When ΔP is constant, there is a change in potential energy ΔZ and by providing an effective pressure head H e There are two ways to achieve effective discharge of condensed water inside the circulating air air conditioner.

[0043] So in summary, the pressure difference between the inside and outside of the air conditioner can be expressed by the formula: ΔP=P 余压 -k2∑P 压损 -P0 expression.

[0044] Where: ΔP is the pressure difference between the inside and outside of the air conditioner; k2 is the safety factor, 0.6<k1<0.8; ∑P 压损 is the pressure loss of equipment, air conditioner, air duct, etc.; P0 is the atmospheric pressure outside the air conditioner.

[0045] A reasonable water seal structure can change the potential energy between the condensed water and the discharged water inside the air conditioner, thereby preventing unfiltered air from outside from entering the air conditioner when the air conditioner fan is started, thereby polluting the clean air inside. At the same time, it can ensure that the condensed water is discharged in time when the air conditioner is operating normally.

[0046] In the initial state before the air conditioner is started, the liquid level in the water seal is as follows: Figure 5 As shown, the condensate level on both sides of the U-bend is the same, and the water column height is H1. At this time, the relationship between the dimensions of the water seal device is as follows: H = H1 + H2.

[0047] During the fan startup process, the negative pressure in the unit gradually increases with the increase of the fan speed. In order to avoid the generation of negative pressure in the unit when the fan starts, and to evacuate the liquid column in the U-shaped tube and destroy the water seal in the U-shaped tube, H=2H1 is required.

[0048] When condensed water is generated in the air conditioner, it first gathers towards the drain pipe under the action of gravity. As the condensed water increases near the air conditioner side, the water seal begins to play a drainage function. Under stable operation, the liquid level in the water seal is as follows: Figure 6 shown.

[0049] At this time, the height difference H2 of the water columns on both sides of the water seal is the negative pressure value of the condensate discharge point in the circulating fan unit in the current state. As the air-conditioning unit is used for a longer time, the resistance of the filter in the air-conditioning unit will gradually increase, causing the negative pressure value of the condensate discharge point to increase accordingly. Reflected in the water seal, the height difference H2 is a value that changes with the operating conditions of the air conditioner. Therefore, the water seal should be able to ensure that it is still effective when the air-conditioning unit reaches the most unfavorable negative pressure. That is, under the most unfavorable conditions, the condensate can still be continuously discharged to prevent the condensate from accumulating in the air-conditioning room. Therefore, the dimensional relationship in the U-shaped tube is as follows: H>2H1>H1+H2=2k1*ΔP2 / 9.81;

[0050] By passing the water collection floor drain 9 through the air conditioning floor, a higher water seal height difference can be designed without space restrictions, thereby increasing the negative pressure range. In the new design, when H is 250mm, the maximum negative pressure value is approximately -2500Pa. In the conventional design, H = 79mm, the maximum negative pressure value is approximately -790Pa. The negative pressure value of the circulating air conditioning surface cooling section is approximately -2000Pa, which is less than the designed -2500Pa. Therefore, the problem of low floor drain water seal and poor drainage can be completely solved. An overflow cover 96 is installed on the top of the overflow pipe 95. The cover plate 91 is provided with a flap 92, which is arranged above the overflow cover 96.

[0051] like Figure 2 As shown, the water collection pan is divided into a functional area 32 and a non-functional area 34 by a partition 35. Drain holes 33 are located at the lowest point of each of these areas. Several structural reinforcements have been added to the functional area 32 of the pan to accommodate functional components, but these reinforcements do not affect the tilting and accumulation of water. The pan is equipped with a module housing 31, equipped with a disassembly panel 37 and an access door 36 corresponding to the functional area 32 and the non-functional area 34, respectively, for internal inspection of the functional modules.

[0052] The preferred embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. However, the utility model is not limited to the specific details in the above embodiments. Within the technical concept of the utility model, various equivalent transformations can be made to the technical solutions of the utility model, and these equivalent transformations all fall within the scope of protection of the utility model.

Claims

1. An air conditioning drainage system, comprising a plurality of water collecting pans of functional modules, wherein the plurality of water collecting pans are tilted and connected in sequence, characterized in that: The drainage hole (33) of the water collection bottom plate is connected to the water collection floor drain (9) through a drainage pipe system (8). The drainage pipe system (8) includes a plurality of drainage pipes connected to one drainage hole (33) and / or connected to multiple drainage holes (33). The water collection floor drain (9) is arranged through the building structure (0).

2. An air conditioning drainage system according to claim 1, characterized in that: The drainage pipe connecting the plurality of drainage holes (33) is a conduit (82), and the maximum pressure difference of the plurality of water inlet ends on the conduit (82) is less than a water leakage pressure difference threshold value, which is ΔP1.

3. The air conditioning drainage system according to claim 2, characterized in that: The water collecting floor drain (9) is arranged in a reserved hole of the building structure (0), and comprises a cover plate (91), a water storage bucket (94) and an overflow pipe (95). The cover plate (91) is installed on the top of the water storage bucket (94), and the overflow pipe (95) is arranged through the bottom of the water storage bucket (94). The water collecting floor drain (9) is arranged on the building structure (0) through the cover plate (91).

4. The air conditioning drainage system according to claim 3, characterized in that: The drainage end of the drainage pipe system (8) passes through the pipe arrangement hole (93) on the cover plate (91) and extends into the water storage in the water storage bucket (94). The drainage pipe system (8) and the overflow pipe (95) form a drainage seal in the water storage bucket (94). The height difference between the bottom surface of the water storage bucket (94) and the drainage hole (33) is greater than the safety height threshold.

5. The air conditioning drainage system according to claim 4, characterized in that: The safety height threshold is H, H>2H1>H1+H2=2k1*ΔP2 / 9.81; wherein, H1 is the height of the drainage seal when the air conditioner is not running; H2 is the height of the liquid in the drainage pipe system (8) caused by the negative pressure in the air conditioner when the air conditioner is running; k1 is the water seal safety factor of one; ΔP2 is the pressure difference between the inside and outside of the air conditioner.

6. The air conditioning drainage system according to claim 5, characterized in that: An overflow cover (96) is installed on the top of the overflow pipe (95), and a flap (92) is provided on the cover plate (91), and the flap (92) is arranged above the overflow cover (96).

7. The air conditioning drainage system according to claim 1, characterized in that: The water collecting bottom plate is divided into a functional area (32) and a non-functional area (34) by a partition (35), and drainage holes (33) are provided at the bottom of the functional area (32) and the non-functional area (34).

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