CN218627257U - Water collector subassembly and air conditioning unit - Google Patents

Abstract

The utility model discloses a water collector subassembly and air conditioning unit, wherein, the water collector subassembly includes: the first water receiving tray is provided with a first water receiving groove, a partition plate is connected to the first water receiving tray and arranged in the first water receiving groove, the partition plate divides the first water receiving groove into a first chamber and a second chamber, and a first throttling hole is formed in the partition plate; the first chamber is communicated with a notch of the first water receiving tank; the first chamber is communicated with the second chamber through a first throttling hole; the second chamber is communicated with the drain hole of the first water pan. The utility model discloses a water collector subassembly and air conditioning unit have solved in the prior art effectively that comdenstion water discharge pressure is too big, the velocity of flow is too fast in the air conditioning unit, lead to the comdenstion water to take away the problem of cold volume easily.

Description

Water collector subassembly and air conditioning unit

Technical Field

The utility model relates to a refrigeration technology field particularly, relates to a water collector subassembly and air conditioning unit.

Background

The air conditioning unit on the ground of airplane is a special air conditioner with full fresh air, and the treated air is high-temp. high-humidity gas. The unit adopts a direct evaporation type refrigeration cycle technology, air passing through an evaporator is cooled by evaporating a refrigerant in an evaporator coil, and low-temperature air is sent into an airplane cabin through a long special air supply hose and a special joint by utilizing a fan generating strong air supply pressure.

In order to reduce the temperature and the humidity of the processed air, an evaporator of the air conditioning unit must have enough large refrigerating and dehumidifying capacity, and because the front-back pressure difference of the evaporator is large, the heat exchanger (the evaporator) is positioned at the downstream of the air flow of the fan, and the heat exchanger (the evaporator) is under the condition of positive pressure and high pressure, the discharge pressure of condensed water is too large, the flow speed of the condensed water is too fast, and the cold energy is easily taken away.

In summary, in the prior art, the pressure of the condensed water discharged from the air conditioning unit is too high, and the flow rate is too high, so that the condensed water can take away the cold energy easily.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an in provide a water collector subassembly and air conditioning unit to condensate water discharge pressure is too big, the velocity of flow is too fast among the air conditioning unit in solving prior art, leads to the problem that the comdenstion water is taken away cold volume easily.

In order to achieve the above object, the utility model provides a water collector subassembly, include: the first water receiving tray is provided with a first water receiving groove, a partition plate is connected to the first water receiving tray and arranged in the first water receiving groove, the partition plate divides the first water receiving groove into a first chamber and a second chamber, and a first throttling hole is formed in the partition plate; the first chamber is communicated with the notch of the first water receiving tank; the first chamber is communicated with the second chamber through a first throttling hole; the second chamber is communicated with the drain hole of the first water pan.

Furthermore, the partition plate is connected with a baffle which is positioned in the first chamber, and the baffle divides the first chamber into at least two sub-chambers.

Further, the number of the first throttling holes is multiple, the number of the first throttling holes corresponds to that of the sub-chambers, and each sub-chamber is communicated with the second chamber through at least one first throttling hole.

Further, the partition plate is of an elastic plate structure.

Further, the method also comprises the following steps: the second water receiving tray is provided with a second water receiving groove; the first water receiving tray is connected to the second water receiving tray, and the second water receiving tray is isolated from the first water receiving tray.

Furthermore, the first water receiving tray is arranged in the second water receiving tank, and a water receiving space of the second water receiving tank is formed between the outer wall of the first water receiving tray and the inner wall of the second water receiving tank.

Furthermore, the first water receiving tray protrudes out of the second water receiving tank, and the notch of the first water receiving tank is positioned outside the second water receiving tank.

Further, the method also comprises the following steps: the first water drainage pipe is communicated with the second water receiving tank; and the second water drainage pipe is communicated with the first water receiving tank.

Furthermore, the second water discharge pipe comprises N U-shaped bends which are arranged in series, wherein N is more than or equal to 1, and N is an integer.

Furthermore, a heat insulation layer is laid on the outer surface of the first water receiving tray.

According to another aspect of the utility model, an air conditioning unit is provided, including heat exchanger and foretell water collector subassembly, the water collector subassembly sets up the bottom at the heat exchanger.

Furthermore, the second water pan is positioned below the first water pan, and the first water pan is positioned below the heat exchanger; a second water receiving groove of the second water receiving tray is used for receiving condensed water and rainwater at the exposed pipe of the heat exchanger; the first water receiving tray is arranged at a position where the first water receiving tank receives condensed water inside the heat exchanger.

Furthermore, the bottom of the heat exchanger is provided with a lower protection plate, the lower protection plate is provided with a second throttling hole, the lower protection plate is connected to the first water receiving tray, the lower protection plate is located at the position of a notch of the first water receiving tank, and the second throttling hole is communicated with the first water receiving tank; and the condensed water in the heat exchanger enters the first water receiving tank through the second throttling hole.

Furthermore, the first water receiving tray is arranged in the second water receiving tank, and a water receiving space of the second water receiving tank is formed between the outer wall of the first water receiving tray and the inner wall of the second water receiving tank; the area and the arrangement position of the water receiving space correspond to the exposed pipe of the heat exchanger and the partial area of the periphery of the heat exchanger.

Furthermore, the number of the heat exchangers is at least two, each heat exchanger corresponds to one sub-chamber, and the second throttling hole of each heat exchanger is communicated with the corresponding sub-chamber; the number of the first throttling holes is multiple, the number of the first throttling holes corresponds to that of the sub-chambers, and each sub-chamber is communicated with the second chamber through at least one first throttling hole.

Furthermore, all the heat exchangers are arranged at intervals along the airflow direction of the heat exchange air flue, and all the sub-chambers are sequentially arranged along the airflow direction of the heat exchange air flue.

Furthermore, the first water receiving tray protrudes out of the second water receiving tank, and the notch of the first water receiving tank is positioned outside the second water receiving tank; the lower protection plate is connected with the side wall of a heat exchange air channel where the heat exchanger is located in a sealing mode, and the first water pan is connected with the lower protection plate in a sealing mode.

Further, the air conditioning unit is an airplane ground air conditioning unit, and the heat exchanger is an evaporator.

Further, still include: the first water drainage pipe is communicated with the second water receiving tank; and the second drain pipe is communicated with the first water receiving tank and comprises N U-shaped bends which are arranged in series, wherein N is more than or equal to 1, and N is an integer.

Further, the air conditioning unit comprises a variable frequency fan, the air supply pressure of the variable frequency fan is P, wherein the larger the P value is, the larger the N value is.

Inside air conditioning unit, the heat exchanger is located the air current low reaches of fan, and the heat exchanger is in the highly compressed condition of malleation this moment, and comdenstion water discharge pressure is too big, and the comdenstion water velocity of flow is too fast, takes away cold volume easily, consequently will step down the comdenstion water, especially the inside comdenstion water of evaporimeter. So the utility model discloses a first cavity and second cavity step down and the deceleration to the comdenstion water. The specific principle is that the condensed water firstly enters the first chamber and then enters the second chamber through the first throttling hole, and the first throttling hole can reduce the pressure of the fluid, so that the air flow and the condensed water are throttled again when passing through the first throttling hole, and the pressure is further reduced. The air current through the division board dilatation once more in the second cavity, pressure further reduces, and speed becomes zero, and the dynamic pressure is whole to become the static pressure. The comdenstion water is gathered in the second chamber, gets into drainage system through the wash port of first water collector under the static pressure effect, and comdenstion water discharge pressure reduces, the velocity of flow reduces, and then has solved the problem that the comdenstion water takes away cold volume easily.

Drawings

Fig. 1 is a schematic structural view of a water pan assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first water pan of the water pan assembly according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a first drain pipe and a second drain pipe of the water pan assembly according to the embodiment of the present invention;

fig. 4 is a schematic view of the internal structure of the air conditioning unit according to the embodiment of the present invention; and

fig. 5 is a schematic structural diagram of an air conditioning unit according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.

Referring to fig. 1 to 3, according to an embodiment of the present invention, a water pan assembly is provided, which is mainly used in an air conditioning unit on the ground of an aircraft. The water pan assembly comprises a first water pan 10, the first water pan 10 is provided with a first water receiving tank 11, a partition plate 12 is connected to the first water pan 10, the partition plate 12 is arranged in the first water receiving tank 11, the partition plate 12 divides the first water receiving tank 11 into a first chamber 11a and a second chamber 11b, and a first throttling hole 121 is formed in the partition plate 12. The first chamber 11a is communicated with the notch of the first water receiving tank 11; the first chamber 11a and the second chamber 11b communicate through the first orifice 121; the second chamber 11b communicates with a drain hole of the first drip tray 10.

Inside air conditioning unit, the heat exchanger is located the air current low reaches of fan, and the heat exchanger is in the highly compressed condition of malleation this moment, and comdenstion water discharge pressure is too big, and the comdenstion water velocity of flow is too fast, takes away cold volume easily, consequently will step down the comdenstion water, especially the inside comdenstion water of evaporimeter. So the utility model discloses a first cavity 11a and second cavity 11b step down and the deceleration to the comdenstion water. Specifically, the condensed water first enters the first chamber 11a and then enters the second chamber 11b through the first orifice 121, and the first orifice 121 can reduce the fluid pressure, so that the air flow and the condensed water are throttled again when passing through the first orifice 121, and the pressure is further reduced. The volume of the air flow passing through the partition plate 12 is expanded again in the second chamber 11b, the pressure is further reduced (i.e., the cavity effect is reduced), the speed becomes zero, and the dynamic pressure becomes static pressure. The condensed water is gathered in the second chamber 11b and enters the drainage system through the drain hole of the first water pan 10 under the action of static pressure, the discharge pressure of the condensed water is reduced, the flow rate is reduced, and the problem that the cold quantity is easily taken away by the condensed water is solved.

In order to further reduce the pressure, in this embodiment, a baffle 23 is connected to the partition plate 12, the baffle 23 is located in the first chamber 11a, and the baffle 23 divides the first chamber 11a into at least two sub-chambers 11c. The water-containing airflow flowing out or sprayed out of the evaporator collides, reflects, mixes and expands in the sub-chamber 11c, the pressure of the airflow is reduced, the speed is reduced, the noise is reduced, and the condensed water collides, reflects, adsorbs, settles and polymerizes. The number of the sub-chambers 11c can be set according to the number of the evaporators, if the number of the evaporators of the air conditioning unit is multiple, the sub-chambers corresponding to the number of the evaporators one by one are set, and the sub-chambers are used for receiving airflow and condensed water flowing out of the bottoms of the evaporators.

The number of the first throttle holes 121 is plural, the number of the first throttle holes 121 corresponds to the number of the subchambers 11c, and each subchamber 11c communicates with the second chamber 11b through at least one first throttle hole 121. Every subchamber 11c all communicates with second chamber 11b, and this kind of cooperation has constituted a plurality of dilatation and has stepped down the combination, reaches maximum decompression effect.

The partition plate 12 is of an elastic plate structure. The partition plate 12 is thin and has certain elasticity, a plurality of first throttling holes are distributed on the partition plate 12, kinetic energy of air flow and water drops can be elastically reduced through the partition plate, and fluid pressure is reduced through the first throttling holes.

The water pan assembly further comprises a second water pan 20, and the second water pan 20 is provided with a second water receiving groove 21; the first water receiving tray 10 is provided with a first water receiving tank 11, the first water receiving tray 10 is connected to a second water receiving tray 20, and a second water receiving tank 21 is isolated from the first water receiving tank 11.

The utility model discloses a water collector subassembly is through installing the bottom at heat exchanger (evaporimeter) to receive the comdenstion water of different positions. The second water receiving tank 21 of the second water receiving tray 20 is used for receiving condensed water and rainwater (with higher temperature) at the exposed pipe of the heat exchanger 30; the first water receiving tank 11 of the first water receiving tray 10 is used for receiving condensed water (with low temperature) inside the heat exchanger 30. The second water receiving tank 21 and the first water receiving tank are mutually isolated, the internal and external condensed water are separated, the rainwater and the condensed water are separated, cold water and warm water are prevented from being mixed, and the corresponding heat exchanger cannot exchange heat with the condensed water, so that the heat load is reduced, the cold loss is prevented, and the purpose of energy conservation is achieved.

The first water pan 10 is arranged in the second water receiving tank 21, and a water receiving space of the second water receiving tank 21 is formed between the outer wall of the first water pan 10 and the inner wall of the second water receiving tank 21. Referring to fig. 1, the first water receiving tray 10 is located in the second water receiving tank 21, and the first water receiving tray 10 and the second water receiving tray 20 are integrally located in a vertically distributed position relationship. The first water pan 10 is welded on the second water pan 20, and the side wall of the first water pan, the bottom of the second water pan 21 and the partition plate 12 form the second chamber.

Of course, the second water-receiving tray 20 and the first water-receiving tray may be connected together by an integral forming process to form an integral structure. In this embodiment, the second water pan 20 and the first water pan are both rectangular, and the second water pan 20 is formed by punching, bending, and welding a sheet metal part. The bottom is in a step shape, the periphery is provided with a skirt edge, and the skirt edge is provided with a pipe passing hole and a water outlet hole. In other embodiments, not shown, the second drip tray 20 and the first drip tray may be circular, triangular, or other shapes.

In order to ensure the heat insulation effect and prevent the heat exchange between the water in the second water receiving tank 21 and the water in the first water receiving tank 11, in this embodiment, a heat insulation layer 14 is laid on the outer surface of the first water receiving tray 10, and the heat insulation layer 14 is generally a heat insulation sponge. Referring to fig. 4, the thermal insulation layer 14 directly separates the contact area capable of exchanging heat between the second water receiving tank 21 and the first water receiving tank, so as to perform a thermal insulation function and further prevent the loss of cooling capacity.

Because first water collector 10 is installed in second water collector 21, in order to prevent that condensate water and rainwater in second water collector 21 from flowing backward or splashing to first water collector in, so with the institutional advancement of first water collector 10: the first water receiving tray 10 protrudes out of the second water receiving tank 21, and the notch of the first water receiving tank 11 is located outside the second water receiving tank 21. The second water pan 20 is located below the first water pan as a whole, so that the condensed water in the first water pan 10 is prevented from mixing with rainwater and condensed water with high temperature.

As shown in fig. 3, the water pan assembly further includes a first drain pipe 41 and a second drain pipe 42, the first drain pipe 41 is communicated with the second water receiving tank 21; the second drain pipe 42 communicates with the first water receiving tank 11. The first drainage pipe and the second drainage pipe form two water inlets, and the first drainage pipe and the second drainage pipe are converged into one position to be discharged, namely, water is discharged through one water outlet. The two drain pipes discharge the condensed water of the two water receiving tanks respectively, so that the advantage that the water with more impurities in the second water receiving tank 21 can be directly discharged to prevent pollution in the unit is realized, the pipeline can be adjusted to be a larger diameter, the drainage is not influenced by other factors, and the drainage efficiency is high. And the second drain pipe 42 can be independently controlled to be closed for the condensed water of the first water pan, and after the pressure reduction of the condensed water is finished, the condensed water starts to drain under the action of static pressure after accumulated water reaches a certain height, so that periodic gap drainage is realized.

Preferably, the second drain pipe 42 includes N U-bends 42a arranged in series, where N ≧ 1, N is an integer.

N is more than or equal to 1, N =1, 2 and 3 \ 8230n, the specific numerical value depends on the air supply pressure of a fan (high-pressure frequency conversion centrifugal fan) of an air conditioning unit (airplane ground air conditioning unit), and the larger the air supply pressure is, the larger the N numerical value is. The second drain pipe 42 is composed of a plurality of PVC straight pipes, PVC elbows, and a PVC right-angle tee joint by bonding (fusion), and forms N U-bends 42a. The second drain pipe 42 functions to: the on-way friction resistance of the straight pipe section, the local resistance of the elbow and the liquid column static pressure are utilized to further reduce the pressure, so that normal-pressure drainage is realized; meanwhile, the liquid sealing function of the U-shaped bend is utilized to isolate indoor and outdoor air, indoor air supply pollution is prevented, heat load is reduced, and energy conservation is realized. The liquid seal position of the U-shaped bend moves between the 1 st U-shaped bend and the Nth U-shaped bend along with the frequency change of a fan (a high-voltage frequency conversion centrifugal fan), the liquid seal position is located at the Nth U-shaped bend when the frequency is the maximum, and the liquid seal position is located at the 1 st U-shaped bend when the frequency is the minimum. So that at least 1 liquid seal is active no matter which frequency.

Assuming that the pressure at the water inlet of the second water discharge pipe 42 is P1, the pressure at the water outlet of the water discharge pipe is P0, and P0 is atmospheric pressure, and the pressure difference therebetween is Δ P, Δ P = P1-P0. When the delta P is larger than 0, a liquid seal is established at the Nth U-shaped bend, and once water is accumulated in the first water receiving tray, water is drained immediately; when delta P =0, a liquid seal is established in the first U-shaped bend, and water begins to drain under the action of static pressure along with the increase of accumulated water in the water receiving tray; when the delta P is less than 0, a liquid seal is established at the U-shaped bend between the first channel and the Nth channel, no water is drained at the moment, and after water is accumulated to a certain height, water drainage is started under the action of static pressure. Under the three conditions, periodic gap drainage can be realized. When the frequency of the high-voltage frequency conversion centrifugal fan changes, namely the outlet air supply pressure changes, the high-voltage frequency conversion centrifugal fan can adapt to the change in real time.

The utility model also provides an embodiment of air conditioning unit, see fig. 4 and 5, air conditioning unit includes heat exchanger 30 and the water collector subassembly of above-mentioned embodiment, and the water collector subassembly sets up the bottom at heat exchanger 30.

As shown in fig. 4, the second water pan 20 is located below the first water pan 10, and the first water pan 10 is located below the heat exchanger 30; the second water receiving tank 21 of the second water receiving tray 20 is used for receiving condensed water and rainwater at the exposed pipe of the heat exchanger 30; the first water receiving tray 10 is arranged at a position that the first water receiving tank 11 receives the condensed water inside the heat exchanger 30.

The novel water pan assembly structure is arranged at the bottom of a heat exchanger (evaporator) to receive condensed water at different positions. The second water receiving tank 21 of the second water receiving tray 20 is used for receiving condensed water and rainwater (with higher temperature) at the exposed pipe of the heat exchanger 30; the first water receiving tank 11 of the first water receiving tray 10 is used for receiving condensed water (with low temperature) inside the heat exchanger 30. Second water receiving tank 21 and first water receiving tank are mutual isolation, and inside and outside comdenstion water separately, and rainwater, comdenstion water separately avoid cold, warm water to mix, and the heat exchanger that corresponds like this also can not take place the heat transfer with the comdenstion water, reduces heat load promptly, prevents cold volume loss to reach energy-conserving purpose.

It should be noted that the second water pan 20 and the first water pan may be fixedly connected to the casing of the air conditioning unit or the internal air duct structure, and only the second water pan 20 is required to be disposed at a position corresponding to the exposed pipe of the heat exchanger, so that the condensed water at the exposed pipe of the heat exchanger and the rainwater entering from the outside can flow into the second water receiving tank 21 along the exposed pipe of the heat exchanger by gravity. In a similar way, the arrangement position of the first water pan is matched with the heat exchange tube in the heat exchanger, so that the condensed water in the heat exchanger flows into the first water receiving tank along the internal heat exchange tube by leaning on gravity after flowing to the bottom of the heat exchanger. The second water-receiving tray 20 and the first water-receiving tray may be connected to different structures, respectively, without direct connection therebetween. Of course, the second drip tray 20 and the first drip tray may be connected together and then fixed to the bottom of the air conditioning unit housing.

Preferably, the bottom of the heat exchanger 30 is provided with a lower protection plate 31, the lower protection plate 31 is provided with a second throttling hole 311, the lower protection plate 31 is connected to the first water receiving tray 10, the lower protection plate 31 is located at the position of the notch of the first water receiving tank 11, and the second throttling hole 311 is communicated with the first water receiving tank 11; the condensed water in the heat exchanger 30 enters the first water receiving tank 11 through the second throttle hole 311.

The lower guard plates of the heat exchanger (namely the evaporator) are provided with second throttling holes, and the second throttling holes are used for discharging condensed water and reducing the pressure of airflow passing through the second throttling holes. And the second throttling hole 311 and the first water receiving tank 11 form cavity effect pressure reduction matching, and the airflow pressure is reduced again.

The first water pan 10 is arranged in the second water receiving tank 21, and a water receiving space of the second water receiving tank 21 is formed between the outer wall of the first water pan 10 and the inner wall of the second water receiving tank 21; the area and the arrangement position of the water receiving space correspond to the exposed pipe of the heat exchanger 30 and the partial area of the periphery of the heat exchanger 30. Referring to fig. 4, the water receiving space of the second water receiving tank 21 is directed to the exposed pipe of the heat exchanger and the area of the periphery thereof, so that the structure of the second water receiving tray 20 is expanded to the periphery of the heat exchanger so as to receive the condensed water on the surface of the heat exchanger (the exposed pipe portion) and the rainwater entering from the outside. The area of the water receiving space can be selected according to the space size of the air conditioning unit and the shape of the heat exchanger.

Preferably, the first water receiving tray 10 is connected with a partition plate 12, the partition plate 12 is arranged in the first water receiving tank 11, the partition plate 12 divides the first water receiving tank 11 into a first chamber 11a and a second chamber 11b, and the partition plate 12 is provided with a first throttle hole 121; the first chamber 11a is communicated with the notch of the first water receiving tank 11; the first chamber 11a and the second chamber 11b communicate through the first orifice 121; the second chamber 11b is communicated with a drain hole of the first water pan 10; the partition plate 12 is connected with a baffle plate 23, the baffle plate 23 is positioned in the first chamber 11a, and the baffle plate 23 divides the first chamber 11a into at least two sub-chambers 11c; the number of the heat exchangers 30 is at least two, each heat exchanger 30 corresponds to one sub-chamber 11c, and the second throttling hole 311 of each heat exchanger 30 is communicated with the corresponding sub-chamber 11c; the number of the first throttle holes 121 is plural, the number of the first throttle holes 121 corresponds to the number of the subchambers 11c, and each subchamber 11c communicates with the second chamber 11b through at least one first throttle hole 121.

In this embodiment, the number of the heat exchangers is two, and the number of the sub-chambers 11c is also two. Each heat exchanger corresponds to a group of second throttling holes 311 (the number of the second throttling holes can be multiple), and each heat exchanger corresponds to one sub-chamber, so that the internal condensed water of each heat exchanger can be connected by the first water receiving tray. Moreover, the baffle 23 separating the sub-chamber can play a role in blocking reflection, consume the kinetic energy in the airflow, reduce noise and prevent the backflow of condensed water droplets caused by different pressures of the upstream and the downstream.

Preferably, all the heat exchangers 30 are arranged at intervals along the airflow direction of the heat exchange air duct, and all the sub-chambers 11c are arranged in sequence along the airflow direction of the heat exchange air duct. The cooperation structure of first water collector and heat exchanger can avoid causing condensation drop of water or air current backward flow because of the air current upstream and downstream pressure reduces gradually, reduces the sensible heat loss that the temperature step-by-step-down produced. As shown in FIG. 4, the center of the second orifice of the lower protective plate of the evaporator is respectively taken asbase:Sub>A section A-A andbase:Sub>A section B-B, and the corresponding temperature and pressure at the section are respectively t _a 、t _b ，P _a 、P _b Due to the on-way resistance, P _a ＞P _b Let the pressure difference between them be Δ P _z ，ΔP _z ＝P _a －P _b Under the action of the pressure difference, small water drops discharged from the position A-A can flow back into the air duct through the position B-B to cause sensible heat loss. Let the temperature difference between A-A and B-B be Delta T _Z ，ΔT _Z ＝t _a －t _b T, because the evaporator gradually exchanges heat and cools _a ＞t _b Q = cm Δ T, where Q is sensible heat loss, m is mass of returned water droplets, and c is specific heat of water _Z . Therefore, no water drops flow back, and sensible heat loss can be avoided.

The air conditioning unit is an airplane ground air conditioning unit, and the heat exchanger is an evaporator. The water collector component is arranged in the ground air conditioning unit of the airplane, and can realize normal-pressure drainage through various pressure reduction effects, so that drainage splashing is avoided. When the heat exchanger is located the air current low reaches of fan, the heat exchanger is in the malleation, and the water collector subassembly can step down through the pressure reduction structure, realizes the ordinary pressure drainage. If the heat exchanger is in the air flow upper reaches of fan, the heat exchanger is in the negative pressure, and water collector subassembly also can realize pressure balance, can normally drain.

The first water receiving tray 10 protrudes out of the second water receiving tank 21, and the notch of the first water receiving tank 11 is positioned outside the second water receiving tank 21; the lower protection plate 31 is connected with the side wall of the heat exchange air duct in a sealing mode, and the first water pan 10 is connected with the lower protection plate 31 in a sealing mode. The shape of first water collector 10 and the sealed cooperation between the backplate down can play the thermal-insulated effect that keeps warm, moreover, produce between first water collector and the backplate and cut off the fluid effect, mainly to the service environment of aircraft ground air conditioning unit, can prevent that outdoor hot-air from scurrying into, indoor cold air spills.

The air conditioning unit further comprises a first water discharge pipe 41 and a second water discharge pipe 42, wherein the first water discharge pipe 41 is communicated with the second water receiving tank 21; the second water discharge pipe 42 is communicated with the first water receiving tank 11, and the second water discharge pipe 42 comprises N U-shaped bends 42a which are arranged in series, wherein N is more than or equal to 1, and N is an integer.

The air conditioning unit comprises a variable frequency fan 50, wherein the air supply pressure of the variable frequency fan 50 is P, and the larger the P value is, the larger the N value is.

N is more than or equal to 1, N =1, 2 and 3 \8230n, the specific numerical value depends on the air supply pressure P of a fan (high-pressure frequency conversion centrifugal fan) of an air conditioning unit (airplane ground air conditioning unit), and the larger the air supply pressure P is, the larger the N numerical value is. The second drain pipe 42 is composed of a plurality of PVC straight pipes, PVC elbows, and a PVC right-angle tee joint by bonding (fusion), and forms N U-bends 42a. The second drain pipe 42 functions to: the on-way friction resistance of the straight pipe section, the local resistance of the elbow and the liquid column static pressure are utilized to further reduce the pressure, so that normal-pressure drainage is realized; meanwhile, the liquid sealing function of the U-shaped bend is utilized to isolate indoor and outdoor air, indoor air supply pollution is prevented, heat load is reduced, and energy conservation is realized. The liquid seal position of the U-shaped bend moves between the 1 st U-shaped bend and the Nth U-shaped bend along with the frequency change of a fan (a high-voltage frequency conversion centrifugal fan), the liquid seal position is located at the Nth U-shaped bend when the frequency is the largest, and the liquid seal position is located at the 1 st U-shaped bend when the frequency is the smallest. Thus, at least 1 hydraulic seal is effective no matter at which frequency.

The airplane ground air conditioning unit comprises a variable-frequency centrifugal fan, a flexible joint, a heat exchange air duct, two evaporators, a water collector assembly, a drain pipe, a plurality of sponges, a plurality of sealing gaskets and the like. The frequency conversion centrifugal fan is used as a power source for supplying air. When the variable-frequency centrifugal fan is positioned at the upstream of the airflow, the variable-frequency centrifugal fan corresponds to the positive-pressure drainage system; the frequency conversion centrifugal fan is positioned at the downstream of the air flow, namely behind the evaporator and corresponds to the negative pressure drainage system. The high-frequency centrifugal fan, the flexible joint, the heat exchange air duct and the two evaporators are connected in series, and a sealing gasket is arranged between every two adjacent parts and used for constructing a sealing channel. The flexible joint plays a role in flexible connection; the heat exchange air duct plays a role of a channel; the evaporator plays a heat exchange role. The direction of the air flow is from the frequency conversion centrifugal fan to the heat exchange air duct. The water flow direction is that the inside of the evaporator flows to the first water receiving disc, the outside condensed water of the evaporator and the rainwater flow first external water receiving disc are converged at the water drainage pipe, and then the condensed water and the rainwater flow are discharged from the water outlet of the water drainage pipe component. Frequency conversion centrifugal fan, flexible joint, heat transfer wind channel, two evaporimeters, water collector subassembly, drainage pipe assembly outward appearance all carry out heat preservation and handle, and the purpose is heat preservation and heat insulation, prevents to leak cold or freeze.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.

Claims (20)

1. A water tray assembly, comprising:

the water receiving device comprises a first water receiving tray (10), wherein the first water receiving tray (10) is provided with a first water receiving groove (11), a partition plate (12) is connected to the first water receiving tray (10), the partition plate (12) is arranged in the first water receiving groove (11), the first water receiving groove (11) is divided into a first chamber (11 a) and a second chamber (11 b) by the partition plate (12), and a first throttling hole (121) is formed in the partition plate (12);

the first chamber (11 a) is communicated with a notch of the first water receiving tank (11); the first chamber (11 a) and the second chamber (11 b) are communicated through a first throttle hole (121); the second chamber (11 b) is communicated with a drain hole of the first water pan (10).

2. The drip tray assembly of claim 1,

baffle (13) are connected to division board (12) on, baffle (13) are located first chamber (11 a), baffle (13) will first chamber (11 a) are separated into two at least subchambers (11 c).

3. The drip tray assembly according to claim 2, wherein the number of said first throttle holes (121) is plural, the number of said first throttle holes (121) corresponds to the number of said sub-chambers (11 c), and each of said sub-chambers (11 c) communicates with the second chamber (11 b) through at least one of said first throttle holes (121).

4. A drip tray assembly according to claim 1, wherein the divider plate (12) is of a resilient plate construction.

5. The drip tray assembly of claim 1, further comprising:

a second water receiving tray (20) having a second water receiving tank (21); the first water receiving tray (10) is connected to the second water receiving tray (20), and the second water receiving tank (21) and the first water receiving tank (11) are mutually isolated.

6. A drip tray assembly according to claim 5,

the first water receiving tray (10) is arranged in the second water receiving groove (21), and a water receiving space of the second water receiving groove (21) is formed between the outer wall of the first water receiving tray (10) and the inner wall of the second water receiving groove (21).

7. The drip tray assembly of claim 6,

the first water receiving tray (10) protrudes out of the second water receiving tank (21), and the notch of the first water receiving tank (11) is located outside the second water receiving tank (21).

8. The drip tray assembly of claim 1, further comprising:

a first drain pipe (41), wherein the first drain pipe (41) is communicated with the second water receiving tank (21);

and the second water discharge pipe (42), wherein the second water discharge pipe (42) is communicated with the first water receiving tank (11).

9. A drip tray assembly according to claim 8, wherein the second drain tube (42) comprises N U-bends (42 a) arranged in series, where N ≧ 1, N is an integer.

10. A drip tray assembly according to claim 1 or claim 6, in which the outer surface of the first drip tray (10) is provided with a thermally insulating layer (14).

11. An air conditioning assembly comprising a heat exchanger (30) and characterised by comprising a water tray assembly as claimed in any one of claims 1 to 10, the water tray assembly being disposed at the base of the heat exchanger (30).

12. Air conditioning assembly according to claim 11,

the second water pan (20) is positioned below the first water pan (10), and the first water pan (10) is positioned below the heat exchanger (30);

the second water collecting groove (21) of the second water collecting tray (20) is used for receiving condensed water and rainwater at the exposed pipe of the heat exchanger (30);

the first water receiving tray (10) is arranged at a position where the first water receiving tank (11) receives condensed water inside the heat exchanger (30).

13. The air conditioning unit according to claim 11 or 12, characterized in that the bottom of the heat exchanger (30) has a lower protective plate (31), the lower protective plate (31) has a second orifice (311), the lower protective plate (31) is connected to the first water receiving tray (10), the lower protective plate (31) is located at a notch position of the first water receiving tray (11), and the second orifice (311) is communicated with the first water receiving tray (11);

condensed water in the heat exchanger (30) enters the first water receiving tank (11) through the second throttle hole (311).

14. Air conditioning assembly according to claim 12,

the first water receiving tray (10) is arranged in the second water receiving tank (21), and a water receiving space of the second water receiving tank (21) is formed between the outer wall of the first water receiving tray (10) and the inner wall of the second water receiving tank (21);

the area and the arrangement position of the water receiving space correspond to the exposed pipe of the heat exchanger (30) and a partial area of the periphery of the heat exchanger (30).

15. Air conditioning assembly according to claim 13,

the number of the heat exchangers (30) is at least two, each heat exchanger (30) corresponds to one sub-chamber (11 c), and the second throttling hole (311) of each heat exchanger (30) is communicated with the corresponding sub-chamber (11 c);

the number of the first throttling holes (121) is multiple, the number of the first throttling holes (121) corresponds to that of the sub-chambers (11 c), and each sub-chamber (11 c) is communicated with the second chamber (11 b) through at least one first throttling hole (121).

16. Air conditioning assembly according to claim 15, wherein all the heat exchangers (30) are arranged at intervals along the airflow direction of the heat exchange air duct, and all the sub-chambers (11 c) are arranged in sequence along the airflow direction of the heat exchange air duct.

17. Air conditioning assembly according to claim 13,

the first water receiving tray (10) protrudes out of the second water receiving tank (21), and the notch of the first water receiving tank (11) is positioned outside the second water receiving tank (21);

the lower protection plate (31) is connected with the side wall of a heat exchange air duct where the heat exchanger is located in a sealing mode, and the first water pan (10) is connected with the lower protection plate (31) in a sealing mode.

18. An air conditioning assembly according to claim 11, wherein the air conditioning assembly is an aircraft floor air conditioning assembly and the heat exchanger is an evaporator.

19. The air conditioning assembly as set forth in claim 18, further comprising:

a first drain pipe (41), wherein the first drain pipe (41) is communicated with the second water receiving tank (21);

the second water discharge pipe (42) is communicated with the first water receiving tank (11), the second water discharge pipe (42) comprises N U-shaped bends (42 a) which are arranged in series, N is more than or equal to 1, and N is an integer.

20. Air conditioning assembly according to claim 19, characterized in that it comprises an inverter fan (50), the supply pressure of said inverter fan (50) being P, where the larger the value of P, the larger the value of N.

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