GB2573022A

GB2573022A - Air conditioning unit

Info

Publication number: GB2573022A
Application number: GB1806669.6A
Authority: GB
Inventors: Fang Xuming; Liu Dashan; Chen Yunshui
Original assignee: Airsys Refrigeration Engineering Tech Beijing Co Ltd
Current assignee: Airsys Refrigeration Engineering Tech Beijing Co Ltd
Priority date: 2018-04-02
Filing date: 2018-04-24
Publication date: 2019-10-23
Anticipated expiration: 2038-04-24
Also published as: GB201806669D0; CN108413523A; GB2573022B; CN108413523B

Abstract

An air conditioning unit 10 includes a main section 100 with an outdoor air inlet, (115, Fig. 3) e.g. in the unit back, having a bag filter, an indoor return air inlet, (112, Fig. 5) e.g. in the unit top, and an air inlet-side chamber 150 which bag filtered outdoor air and indoor return air inlet enters. The unit includes an air outlet-side chamber 150, at least a portion of which is located on both sides of the air inlet side chamber 160 and to which air enters via a pair of adiabatic cooling pads 131, 141 which are respectively provided between the air inlet side chamber and two parts of the air outlet-side chamber. The cooling pads are fed water by a pump 123, pipes 133 and distributers 132 from water tray 122. The bag filter reduces contamination and outdoor, indoor or combined air may be cooled by evaporation according to requirements of an equipment room via a structurally separate fan unit 200.

Description

The invention relates an air conditioning unit.

Background Art

The applicant of the invention discloses an air conditioning unit in a patent document ZL201510346800. 3, as shown in Figure 15, the air conditioning unit mainly includes main module la, fan module 2a and air supply module 3 a which are separately provided, a rough efficiency air filter 6, an evaporation and condensing section, and an medium efficiency air filter 11 are orderly arranged from left to right in a main box 1 of the main module la, wherein the rough efficiency air filter 6, the evaporating and condensing section, the medium efficiency air filter 11 are all arranged in parallel along the vertical direction and spaced apart from each other in the left-right direction; the evaporating and condensing section includes adiabatic cooling pads 7, a first level water plate 10 provided directly at the bottom of the adiabatic cooling pads 7, a second level water plate 8 provided below the first level water plate 10. When the air conditioning unit is in operation, outdoor air is orderly processed by the rough efficiency air filter 6, the adiabatic cooling pads 7, and the medium efficiency air filter 11, then is sent to an blower box 3 under the action of the blower 13 installed in the fan box 2, and enters indoor space via the air supply outlet on the blower box 3.

However, during the use of the above mentioned air conditioning unit, the following problems were discovered:

Firstly, the outdoor fresh air is only filtered through the rough efficiency air filter 6 before entering the adiabatic cooling pads 7 of the evaporating and condensing section. The rough efficiency air filter 6 is only used for rough filtering the outdoor fresh air, so that the air entering the adiabatic cooling pads 7 still carries a large amount of fine dust. When entering the adiabatic cooling pads 7 with moist surface, such a large amount of fine dust can easily cause adiabatic cooling pads 7 to become dirty and blocked. In the long term, it is easy to grow bacteria in the adiabatic cooling pads 7, and these bacteria can easily be sent to indoor space with the air.

Secondly, the outdoor air is first processed by the evaporating and condensing section and then filtered by the medium efficiency air filter 8. Since the humidity of fresh air filtered by the adiabatic cooling pads 7 is relatively high, the water vapor carried by this portion of fresh air is mixed with the dust on the surface of filter element of the medium efficiency air filter 8 after being absorbed by the medium efficiency air filter 8, this may reduce the filter efficiency of the filter , eventually resulting in the air supplied into the indoor space caring a large amount of bacteria and dust. In addition, since the filter element of the medium efficiency air filter 8 is usually made of paper, in the long term, the filter element of the filer may be increased in weight due to abortion of water vapor and the deformation may be caused. As a result, the filter needs to be replaced frequently, resulting in an increase in cost.

Thirdly, a single piece of the adiabatic cooling pads 7 is installed in the main section 1, the evaporation area of the single piece of the adiabatic cooling pads 7 is small, and the cooling capacity per unit volume of the air condition unit is small, which is not conducive to cool the air effectively, and thus reduces the cooling effect on the equipment room.

Fourthly, a bracket is installed in the first level water plate, and a single piece of the adiabatic cooling pads 7 is mounted on the bracket. With this installation method, once the water level of the first level water plate is lowered, a gap located between the bottom of the single piece of the adiabatic cooling pads 7 and the first level water plate is exposed to the water surface. Air in the air inlet side chamber easily bypasses the single piece of the adiabatic cooling pads 7 and enters the air outlet side chamber via the gap, this may lead to an decrease in cooling effect to the air.

In summary, it may reduce the air purification effect and cooling effect to the equipment room by using the above-mentioned air conditioning unit.

Summary of the Invention

In view of this, the main object of the present invention is to provide an air conditioning unit that is conducive to improve the air purification effect and the heat dissipation to the equipment room.

The invention provides an air conditioning unit, including a main section, within which an evaporating and condensing section having adiabatic cooling pads are provided, wherein the main section has: an outdoor air inlet; an indoor return air inlet; a bag filter, which is located in the main section and installed at the outdoor air inlet; an air inlet side chamber formed in the main section, which outdoor air from the outdoor air inlet enters after being filtered by the bag filter and indoor air from the indoor return air inlet enters; an air outlet side chamber, at least a portion of which is located on both sides of the air inlet side chamber, and which the air inside the air inlet side chamber enters via adiabatic cooling pads; a pair of the adiabatic cooling pads, which are respectively provided between the air inlet side chamber and the two air outlet side chambers.

With this solution, firstly, outdoor fresh air enters into the main section via the outdoor air inlet and is effectively filtered by the bag filter at the outdoor air inlet; the outdoor fresh air filtered by the bag filter passes through the adiabatic cooling pads of the evaporating and condensing section and is discharged via the air supply outlet. Compared with the technical solution of existing art, in which outdoor fresh air passes through evaporating and condensing section first and then through the medium efficiency air filter, in the present invention, outdoor fresh air is filtered by the bag filter first and then enters the adiabatic cooling pads of the evaporating and condensing section. The outdoor air can be efficiently filtered by the bag filter, which effectively intercepts a large amount of fine dust in outdoor fresh air and improves the cleanliness of the outdoor fresh air entering the evaporating and condensing section, and thus prevents dirt blocking, bacteria growth and the like on the adiabatic cooling pads caused by the direct influx of the outdoor fresh air carrying a large amount of dust into the evaporating and condensing section. From the above, the present invention can significantly improve the purification effect to the outdoor fresh air by disposing the bag filter on the air inlet side of the evaporating and condensing section.

Secondly, since the evaporating and condensing section includes a pair of adiabatic cooling pads, the area of the adiabatic cooling pads for heat exchange is increased so that the cooling capacity per unit volume is increased, this is conducive to an effective cooling of the air and thus conducive to improve the heat dissipation to the equipment room.

Thirdly, the air inlet side chamber connects with the air outlet side chamber via the adiabatic cooling pads, outdoor air and/or indoor air has to flow through the adiabatic cooling pads as it enters the air outlet side chamber via the air inlet side chamber. In the invention, in the case where the amount of intake air remains the same, since the surface area of the adiabatic cooling pads, through which the air in the air inlet side chamber flowing into the air outlet side chamber, is increased, the speed of the air flowing through the adiabatic cooling pads are relative small. In this way, it is possible to avoid the case that water is carried away from the adiabatic cooling pads due to the high speed of air passing through the adiabatic cooling pads, thereby avoiding the damage of the equipment in the equipment room caused by the air with high humidity entering the equipment room. In other words, in the case of the air volume being constant, since the surface area of the adiabatic cooling pads in the windward side is increased, it is possible to reduce the air resistance of the air when it flows through the adiabatic cooling pads. In this way, speed of air can be lower when it passes through the adiabatic cooling pads without increasing the power of the blower of the air conditioning unit, thereby preventing the case that water is carried away from the adiabatic cooling pads by the air, and avoiding the damage of the equipment in the equipment room caused by the air with high humidity entering the equipment room.

Preferably, the evaporating and condensing section includes a first level water plate installed in the main section, the pair of adiabatic cooling pads are vertically and symmetrically installed on the first level water plate, the first level water plate has a groove portion with its opening facing upwards, a flanging portion provided at the top of the sidewall of the groove portion and extending outward in the left-right direction thereof, a turnup formed integrally at the edge of the flanging portion and extending upward, a mounting plate located above the flanging portion with its edge connecting with the inner surface of the turnup, the pair of adiabatic cooling pads are vertically and symmetrically provided on the mounting plate, a water hole is provided on the part of the mounting plate directly facing the adiabatic cooling pads; the internal space of the main section is divided into the air inlet side chamber and the air outlet side chamber by the first level water plate and the pair of adiabatic cooling pads.

With this solution, the water dripping from the adiabatic cooling pads enters the gap between the mounting plate and the flanging portion via the water hole 1282, and then flows from the gap into the groove portion of the first level water plate. Since the edge of the mounting plate abuts against the inner surface of the turnup, the air in the air inlet side chamber have to flow through the adiabatic cooling pads before entering the air outlet side chamber, this avoids the case that the air in the air inlet side chamber bypasses the adiabatic cooling pads and enters the air outlet side chamber, and thus ensures effective cooling to the air entering the air outlet side chamber from the air inlet side chamber.

In addition, since the pair of adiabatic cooling pads are installed vertically symmetrically on the first level water plate, there is no need to additionally provide a mounting portion for installing the adiabatic cooling pads in the main section, the internal structure of the air conditioner unit can be simplified, and the installation process of the adiabatic cooling pads can be simplified. .

Preferably, the evaporating and condensing section further includes water distributing pipes at the top end of the adiabatic cooling pads for spraying water on the adiabatic cooling pads, and water pipes connecting with the water distributing pipes and used to deliver water thereto; the water distributing pipes are detachably installed in the main section and detachably connected to the water pipes.

With this solution, since the water distributing pipes are detachably connected with the main section and the water pipe, the water distributing pipes can be disassembled easily, so that the water distributing pipes can be conveniently maintained and cleaned.

Preferably, at the top end of the adiabatic cooling pads, a pair of upper baffles is installed below the water distributing pipes to divert the water sprayed by the water distributing pipes to the adiabatic cooling pads.

With this solution, the pair of upper baffles can effectively intercept the water splashing from the water distribution hole of the water distributing pipes and divert water from the water distributing pipes onto the adiabatic cooling pads, and thus prevents water from splashing to other parts of the main section and being carried into the equipment room by the air, so as to avoid damaging to the equipment in the equipment room due to excessive humidity in the equipment room.

Preferably, lower baffles are provided on the inlet and outlet sides of the bottom end of the adiabatic cooling pads, respectively, the bottom ends of the lower baffles are mounted on the adiabatic cooling pads, and the top ends of the lower baffles are inclined away from the adiabatic cooling pads.

With this solution, water splashed from the main body of the adiabatic cooling pads can be intercepted by the lower baffles to prevent the water from splashing to other parts of the main section and being carried into the equipment room by the air, so as to avoid damaging the equipment in equipment room due to excessive humidity entering the equipment room.

Preferably, the unit further includes a blower with an air inlet connecting with the air outlet side chamber, at a portion of the adiabatic cooling pads close to the blower, flow equalizer plates are installed on the inlet side of the adiabatic cooling pads.

With this solution, by providing the flow equalizer plates on the inlet side of the adiabatic cooling pads at the portion of the adiabatic cooling pads close to the blower, air speed on the overall surface of the adiabatic cooling pads are more uniform, preventing the water in the adiabatic cooling pads from being blown out due to the higher air speed.

Preferably, the outdoor air inlet is provided on a back panel of the main section, and a bag filter placed inside the main section housing is installed at the outdoor air inlet; the pair of adiabatic cooling pads are provided separately on the left and right sides of the bag filter when seen from the front of the air conditioning unit, a front panel of the main section is detachably mounted on the main section.

With this solution, when the maintenance staff opens the front panel of the main section, they can see the adiabatic cooling pads and the bag filter directly from the front, so that maintenance of the main section is facilitated. Meanwhile, the pair of adiabatic cooling pads are provided separately on the both left and right sides of the bag filter, so as to form a sufficient space between the two adiabatic cooling pads for operating of maintenance personnel, which is conducive to reduce maintenance difficulty.

Preferably, the indoor return air inlet is provided on the top plate of the main section, and an indoor return air valve is installed at the indoor return air inlet; the pair of adiabatic cooling pads are provided separately on the both left and right sides of the indoor return air valve when seen from the front of the air conditioning unit.

With this solution, the maintenance personnel can see the indoor return air valve directly from the front when opening the front panel of the main section, so that maintenance of the main section is facilitated. In addition, by adjusting the opening of the indoor return air valve, the amount of indoor return air entering the room can be regulated; this is conducive to achieve accurate control of the temperature of the air supplied into the room.

Preferably, an electric control box is installed on the front side of the air conditioning unit in the air outlet side chamber.

With this solution, the electric control box can be directly viewed after opening the front panel of the air conditioning unit, and thus maintenance of the air conditioning unit can be performed from the front.

Preferably, the unit further includes a fan section provided separately from the main section, the blower is installed in the fan section; a main section opening connecting with the air inlet side chamber is provided at the bottom of the main section, and a fan section opening connecting with the an air inlet of the blower is provided at the top of the fan section; when the main section and the fan section are in the assembled state, the main section opening connects with the fan section opening.

With this solution, since the main section and the fan section are independent sections provided separately, compared with the case where the sections are formed integrally, the two sections separately provided have smaller volume, so that the production, transportation, installation, maintenance and replacement of the unit can be more convenient.

Description of the drawings

Figure 1 is a schematic view of two sections of an air conditioning unit in an installed state;

Figure 2 is a left side view of the air conditioning unit shown in Figure 1;

Figure 3 is a rear view of the air conditioning unit shown in Figure 1;

Figure 4 is a top view of the air conditioning unit shown in Figure 1;

Figure 5 is a schematic diagram of the two sections of the air conditioning unit in a disassembled state;

Figure 6 is a schematic diagram of the main section of the air conditioning unit when partial panels are removed;

Figure 7 is a schematic diagram of a fan section of the air conditioning unit;

Figure 8 is a schematic view of the air conditioning unit shown in Figure 1 when its front panel is removed;

Figure 9 is a schematic view of the air conditioning unit shown in Figure 2 when its left side panel is removed;

Figure 10 is a schematic view of the air conditioning unit shown in Figure 4 when its top panel is removed;

Figure 11 is a structural schematic view of water distributing pipes of the air conditioning unit;

Figure 12 is an enlarged view of A in Figure 8;

Figure 13 is an enlarged view of B in Figure 8;

Figure 14 is a longitudinal sectional view at C in Figure 8, which is a partial schematic view;

Figure 15 is a front view of the air conditioning unit in the prior art when its front panel is removed.

Detailed Description

The specific structure of an air conditioning unit of the present embodiments will be described below with reference to Figure 1 to Figure 14. In the following description, the up/down, left/right, and front/rear directions are the up/down, left/right, and front/rear directions of a user who is facing the air conditioning unit.

As shown in Figure 1 and Figure 5, an air conditioning unit 10 of the present embodiment mainly includes a main section 100 and a fan section 200, which are independent sections separately provided. Compared with the case where the two sections are formed integrally, the two sections provided separately have smaller volume, so that the production, transportation, installation, maintenance and replacement of the unit are more convenient. When the air conditioning unit 10 is in the assembled state, the fan section 200 is provided at the bottom of the main section io

100, the two sections are aligned in the front-rear direction and left-right direction.

Specifically, as shown in Figure 1 and Figure 6, the main section 100 has a fat cuboid form as a whole, and includes a main section housing 110 forming a cavity, the main section housing 110 is generally composed of a supporting frame for supporting and a plurality of panels mounted on the outer surface of the supporting frame, wherein a front panel 119 is detachably mounted on the main section housing 110. As shown in Figure 4, an indoor return air inlet 112 is provided on the top panel 111 of the main section housing 110 in the center along the left-right direction, an indoor return air valve 113 (shown in Figure 8) is installed inside the main section housing 110 at the indoor return air inlet 112; a main section opening 118 is also provided at the bottom of the main section housing 110 (see Figure 6); as shown in Figure 3, two outdoor air inlets 115 are provided on the back panel 114 of the main section housing 110 in the center along the left-right direction, the two outdoor air inlets 115 are arranged side by side in the up and down direction, a bag filter 1151 placed in the main section housing 110 is provided at each of the two outdoor air inlets 115 respectively, the bag filter 1151 is detachably installed at each of the outdoor air inlets 115. The bag filter 1151 can be formed by a bag filter in the prior art, its detailed structure is known in the existing technology and therefore is omitted here.

In the present invention, the bag filter 1151 occupies less windward area and has a larger filter area, and can effectively filter outdoor fresh air, which can effectively prevent fine dust or foreign matter in the fresh air from remaining on the adiabatic cooling pads of the evaporating and condensing section 20 described below, thereby contributing to improving the service life of the adiabatic cooling pads.

As shown in Figure 8, in the main section housing 110, a second level water plate 121 is installed near the bottom of the main section housing 110 and arranged along the horizontal direction (i.e., its main body is parallel to the top panel 111 of the main section housing 110) in the center of the left-right direction, and a first level water plate 122 is provided above and parallel to the second level water plate 121 and arranged in the center of the left-right direction. Wherein, the projection area of the second level water plate 121 in a plane perpendicular to the vertical direction is larger than the projection area of the first level water plate 122 in the plane, that is, the size of the second level water plate 121 is greater than that of the first level water plate 122. If the first level water plate 122 overflows or leaks due to a fault, the leaked water may directly drops onto the second level water plate 121 and then is discharged through a drain pipe of the second level water plate 121 (i.e., the second level water plate drain pipe 127 described below).

As shown in Figure 2, Figure 5 and Figure 8 to Figure 10, in the main section housing 110 a second level water plate overflow pipe 126 and a second level water plate drain pipe 127 provided near the bottom thereof are installed, wherein one end of the second level water plate overflow pipe 126 is connected with the upper portion of the second level water plate 121 and the other end extends out of the main section housing 110 and is connected with a drainage system of the air conditioning unit 10, the second level water plate overflow pipe 126 is used to drain water out of the second level water plate 121; one end of the second level water plate drain pipe 127 is connected with the bottom of the second level water plate 121 and its other end also extends out of the main section housing 110 and is connected with the drainage system of the air conditioning unit 10, the second level water plate drain pipe 127 is used to drain water out of the second level water plate 121.

Similarly, in main section housing 110 a first level water plate water supply pipe 125 and a first level water plate drain pipe 124 provided near the bottom thereof are installed, wherein one end of the first level water plate water supply pipe 125 is connected to a tap water supply pipe and the other end is connected with the upper portion of the first level water plate 122, the first level water plate water supply pipe 125 is used for supplying water into the first level water plate 122, the first level water plate water supply pipe 125 is generally installed with a first level water plate water supply valve; one end of the first level water plate drain pipe 124 is connected with the bottom of the first level water plate 122 and the other end extends out of the section housing 110 and is connected with the drainage system of the air conditioning unit 10, the first level water plate drain pipe 124 is to drain water out of the first level water plate 122, the first level water plate drain pipe 124 is generally installed with a first level water plate water supply valve, a first level water plate water supply valve, a first level water plate water drain valve and water pipe connectors for connecting the water pipes are preferably located in the second level water plate 121.

Since the first level water plate water supply valve, the first level water plate water drain valve, connectors for connecting the water plates with the water pipes, and water pipe connectors for connection between the water pipes are all located in the second level water plate 121, once water passage leaks, the leaked water can be collected in the second level water plate 121, this part of water can be discharged into the drain pipe of the air conditioning unit 10 via the second level water plate drain pipe 127, so that the safety problem stated in the present invention, which is the leakage of the water system of the evaporating and condensing section 20, can be solved. In addition, a groove portion concaving downwards is integrally formed on the first level water plate 122, a water pump 123 is installed in the groove portion, a water inlet of the water pump 123 is connected with the bottom of the first level water plate 122.

In the present embodiment, as shown in the Figure 8, a groove portion 1221 with its opening facing upwards is integrally formed in the first level water plate 122, a flanging portion 128 that is approximately perpendicular (specifically, is upwardly inclined) to the side wall of the groove portion 1221 and extends outwardly toward the outer side of the sidewall of the groove portion 128 in the left-right direction is installed on the top of the groove portion 1221, a turnup 129 that is approximately perpendicular to the flanging portion 128 and extends upwardly is integrally formed at the edge of the flanging portion 128, specifically, the turnup 129 is formed on the front and rear sides and the outer side (refer to the side of the flanging portion 128 opposite to the first level water plate 122) , and the height of the turnup outside the flanging portion 128 is greater than the heights of front and rear sides of the flanging portion 128. As shown in Figure 14, in the first level water plate 122, a pair of mounting plates 1281 is also symmetrically installed on the left and right sides thereof, the mounting plate 1281 is located above the flanging portion 128, there is a gap between the mounting plate 1281 and the flanging portion 128. The mounting plate 1281 is installed on the turnup 129 via bolts, and the edge of the mounting plate 1281 preferably abuts against the inner surface of the turnup 129. In addition, a recess corresponding to the adiabatic cooling pad (the left adiabatic cooling pad 131 or the right adiabatic cooling pad 141) is also integrally formed on the mounting plate 1281, and a water hole 1282 is provided at the bottom of the recess. A splash-proof directing plate 1283 provided inside the groove portion 1221 and extending downwards with a certain distance from the side wall of the groove portion 1221 is also installed on the flanging portion 128. The splash-proof directing plate 1283 is used to direct the water flowing from the gap; the mounting plate 1281 is further provided with a windproof baffle 1284 provided inside the groove portion 1221 and extending downwards close to the bottom of the groove portion 1221 and spaced from the side wall of the groove portion 1221, the windproof baffle 1284 prevents air from bypassing the adiabatic cooling pads to be described and entering the air outlet side chamber 160. A left adiabatic cooling pad component 130 and a right adiabatic cooling pad component 140, which are symmetrically arranged in the left-right direction, are mounted on the flanging portion 128 of the first level water plate 122, the adiabatic cooling pad components are separately arranged on both sides of the aforementioned indoor return air inlet 112 and outdoor air inlet 115 in the left and right direction when viewed from the front. The left adiabatic cooling pad component 130 and the right adiabatic cooling pad component 140 have the same structure and composition. The following describes the specific structure of the adiabatic cooling pad component with the left adiabatic cooling pads component 130 as an example. As shown in Figure 8, the left adiabatic cooling pad component 130 mainly includes a left adiabatic cooling pad 131 installed on the flanging portion 128 on the left side of the first level water plate 122 and provided in the vertical direction, left water distributing pipes 132 installed on the inner surface of the top panel 111 of the main section housing 110 and located above the left adiabatic cooling pad 131 and the left water pipes 133 for connecting the water outlet of the water pump 123 and the left water distributing pipes 132.

Wherein, the left adiabatic cooling pad 131 is in the form of a flat cuboid as a whole, when viewed from the front side of the main section 100 (i. e. , the front side of the invention) , the left adiabatic cooling pad 131 is provided in the vertical direction, which is parallel to the left and right side panels of the main section 100; As viewed from the left or right side of the main section 100, the left and right sides of the left adiabatic cooling pad 131 abut against the inner sides of the front and back panels of the main section 100, that is, the left adiabatic cooling pad 131 is provided in the front-rear direction of the main section 100. As shown in Figures 8 and 14, the left adiabatic cooling pad 131 is installed in the recess provided on the left side of the mounting plate 1281, the water dropped from the left adiabatic cooling pad 131 enters the gap located between the mounting plate 1281 and the flanging portion 128 via the water hole 1282 at the bottom of the mounting plate 1281, and then flows into the first level water plate 122 through the gap between the splash-proof directing plate 1283 and the groove portion 1221. On the side of the left adiabatic cooling pad 131 opposite to the right adiabatic cooling pad component 140, a left flow equalizer plate 134 is provided at its lower portion. The left flow equalizer plate 134 is a square plate member and is provided with several through holes. In the present invention, the left adiabatic cooling pad 131 can be constituted by adiabatic cooling pads in the prior art, its detailed structure is known in a prior art and therefore is omitted here.

As shown in Figure 8, inside the top panel 111 of the main section housing 110, a left side mounting bracket 116 is installed above the left adiabatic cooling pad 131. The left water distributing pipe 132 is detachably installed on the left mounting bracket 116, and, the left water distributing pipes 132 and the left water pipes 133 are screw jointed. In this way, it is convenient to disassemble the left water distributing pipes 132, and thereby facilitates maintenance and replacement. As shown in Figure 11, the main body 1321 of the left water distributing pipe 132 is made of PPR water pipes, a plurality of water distributing holes 1322 are provided with intervals at the bottom of the main body 1321 of the left water distributing pipe in the length wise direction of the body, with such structure, the water distribution structure is simpler and more reliable, the distribution of adiabatic cooling pad cycling water is more uniform, meanwhile it facilities production and decreases the cost.

In addition, as shown in Figure 8 and 12, a pair of left upper baffles 135 provided along the front and rear direction of the left adiabatic cooling pad 131 and separately placed on the right and left sides of the left water distributing pipes 132 is provided at the top end of the left adiabatic cooling pad 131. As viewed from the front side of the main section 100, bottom ends of the pair of left upper baffles 135 are installed on the adiabatic cooling pads, the top ends of the baffles are tilted away from each other. The pair of left upper baffles 135 are use for directing the water sprayed by the left water distributing pipes 132 onto the left adiabatic cooling pad 131, intercepting the water splashing from the distributing holes of the left water distributing pipes 132, and preventing water from splashing to other parts of the main section housing 110 and being carried by the air into the equipment room.

As shown in Figure 8 and 12, at the bottom of the left adiabatic cooling pad 131, a pair of left lower baffles 136 is provided on the left and right sides of the left adiabatic cooling pad 131 along the front-rear direction of the left adiabatic cooling pad 131. As viewed from the front side of the main section 100, the bottom end of the pair of left lower baffles 136 are installed on the left adiabatic cooling pad 131, the top ends of the baffles are tilted away from the left adiabatic cooling pad 131. The pair of left lower baffles 136 are used for intercepting the water splashing from the main body of the adiabatic cooling pads and preventing water from splashing to other parts of the main section housing 110.

Similarly, as shown in Figure 8, a right adiabatic cooling pad component 140 includes a right adiabatic cooling pad 141 arranged opposite to the left adiabatic cooling pad 131, right water distributing pipes 142 located at the top end of the right adiabatic cooling pad 141, right water pipes 143 connecting the right water distributing pipes 142 with the water pump 123, a right flow equalizer plate 144 placed opposite to the left flow equalizer plate 134, a pair of right upper baffles 145 installed at the top end of the right adiabatic cooling pad 141 and a pair of right lower baffles 146 installed at the bottom of the right adiabatic cooling pad 141. On the inner side of the top panel 111 of the main section housing 110, a right mounting bracket 117 is installed above the right adiabatic cooling pad 141 for mounting the right water distributing pipes 142.

The evaporating and condensing section 20 of the present invention is jointly formed by the aforementioned left adiabatic cooling pad component 130, the right adiabatic cooling pad component 140, the first level water plate 122 located below these two adiabatic cooling pad components, the second level water plate 121 located below the first level water plate 122 and the water pipes associated with these two water plates. When the evaporating and condensing section 20 is in operation, water in the first level water plate 122 is delivered into the corresponding water distributing pipes via left and right water pipes under the suction of the water pump 123, and then water spreads evenly and stably to the top of the left adiabatic cooling pad 131 and right adiabatic cooling pad 141 via the water distribution holes of the water distributing pipes and flows through the adiabatic cooling pad body from top to bottom so as to wet the two adiabatic cooling pads evenly, and the remaining water is finally collected in the first level water plate 122 for recycling.

From the above, the left adiabatic cooling pad 131 and the right adiabatic cooling pad 141 are separately provided on the left and right sides of the indoor return air inlet 112 and the outdoor air inlet 115, both the front and rear ends of the left adiabatic cooling pad 131 and the right adiabatic cooling pad 141 abut against the front and back panels of the main section 100 respectively, their bottom ends are installed on the first level water plate 122, and their top ends are close to the top of the main section 100. In this way, the internal space of the main section housing 110 can be divided into the air inlet side chamber 150 connecting with the indoor return air inlet 112 and the outdoor air inlet 115, and the air outlet side chamber 160 connecting with the main section opening 118 located at the bottom of the main section unit 100 by the left adiabatic cooling pad 131, the right adiabatic cooling pad 141 and the first level water plate 122. Wherein, a portion of the air outlet side chamber 160 is located on both sides of the air inlet side chamber 150, and the space of the main section 100 below the first level water plate 122 constitutes the remaining portion of the air outlet side chamber 160.

As shown in the Figures 8 to 10, an electric control box 161 placed in the aforementioned air outlet side chamber 160 on the left front side of the main section 100 is installed in the main section housing 110, the electric control box 161 is provided close to the inner surface of the front panel 119 of the main section 100. The operation panel of the electric box 161 is usually provided on the main section front panel 119 and is provided near its left side.

As shown in Figures 5 and 7, the fan section 200 has an overall flat cuboid form, and includes a fan section housing 210 that forms a cavity. The structure of the fan section housing 210 is similar to that of the main section housing 110 and thus omitted here. A pair of fan section openings 212 are provided side by side in the left-right direction on the top panel 211 of the fan section housing 210; a pair of indoor supply outlets 214 is provided side by side in the left-right direction on the front panel 213 of the fan section housing 210, a filter for filtering or a grille for equalizing air is generally installed at the fan section opening 212 and the indoor supply outlet 214. As shown in Figure 8 and 9, a pair of blowers 220 is installed side by side in the left-right direction in the fan section housing 210, the pair of blowers 220 corresponding to the fan section opening 212 and the indoor air supply outlet 214 respectively. Taking one of the blowers 220 as an example, as shown in Figure 7, the air inlet of the blower 220 connects with the fan section opening 212, and its air outlet connects with the indoor air supply outlet 214.

When the air conditioning unit is in assembled state, the fan section 200 is arranged at the bottom of the main section 100, the main section opening 118 at the bottom of the main section 100 is opposite to the fan section opening 212 at the top of the fan section 200, so that the air outlet side chamber 160 on the main section 100 connects with the fan section 200, in particular with the air inlets of the blowers 220.

The working principle of the present invention the air conditioning unit will be described with reference to the aforementioned structural description and Figures 1 to 10. In the present invention, the indoor return air valve 113 is driven by an analog controlled air valve actuator. The switch of the evaporating and condensing section 20 (specifically the water pump 123) is controlled by the control system. By adjusting the opening degree of the indoor return air valve 113 and the switching state of the evaporating and condensing section 20 (specifically, the water pump 123) through the control system, a fresh air natural cooling mode, a fresh air and indoor return air mixing mode, a fresh air natural cooling-evaporative cooling mode, and a fresh air natural cooling evaporative cooling - indoor return air mode can be achieved on the basis of the differences between outdoor and indoor humidity and temperature, so that the temperature of supply air can be maintained within a reasonable range and the room temperature can be stabilized.

Specifically:

a) Fresh air natural cooling mode

When the outdoor temperature is low enough to satisfy the operation condition of the natural cooling mode, blowers 220 are operated, indoor return air valve 113 is closed, water pump 123 is closed; under the suction of the blowers 220, outdoor fresh air passes through the outdoor air inlet 115, bag filter 1151 to enter the air inlet side chamber 150 of the main section 100, and then passes through the left adiabatic cooling pad 131, the right adiabatic cooling pad 141, the air outlet side chamber 160 and the blowers 220 successively, finally the air is sent into indoor space via indoor air supply outlet 214. The low temperature air sent into indoor space is heat exchanged with the warm air discharged by the heat-generating electronic equipment in the equipment room and transforms into high temperature air, the heated air is discharged out of indoor space via an exhaust fan or an exhaust valve provided at a remote end under the positive indoor pressure.

b) Fresh air and indoor return air mixing mode

When the fresh air natural cooling mode is in operation and outdoor temperature in the winter is too low, in order to prevent the condensation on the surface of the electronic equipment of the equipment room caused by the low temperature of the air supply, blowers 220 are operated, indoor return air valve 113 is opened, water pump 123 is closed, wherein the opening degree of the indoor return air valve 113 is adjusted by the control systems on the basis of the predetermined air supply temperature of the air conditioning unit, so that the indoor warm air passes into the air inlet side chamber 150 of the air conditioning unit 10 via the indoor return air valve 113 in a certain proportion.

Specifically, under the suction of the blowers 220, outdoor fresh air passes through the outdoor air inlet 115 and the bag filter 1151 to enter the air inlet side chamber 150 of the main section 100, while indoor warm air passes through the indoor return air inlet 112 and indoor return air valve 113 to enter the air inlet side chamber 150 of the main section 100, the outdoor fresh air and the indoor warm air are mixed in the air inlet side chamber 150, the mixed air then passes through the left adiabatic cooling pad 131, the right adiabatic cooling pad 141, the air outlet side chamber 160, the blowers 220, and then is sent to indoor space via the indoor air supply outlet 214; the air sent into the indoor space with relative low temperature is heat exchanged with the warm air discharged by the heat-generating electronic equipment in the equipment room and transforms into high temperature air, the heated air is discharged out of indoor space via an exhaust fan or an exhaust valve provided at a remote end under the positive indoor pressure.

c) Fresh air natural cooling-evaporative cooling mode

When the fresh air natural cooling mode is in operation but the cooling capacity provided from the unit cannot meet the indoor demand, the blowers 220 are operated, indoor return air valve 113 is closed, the evaporating and condensing section 20 is opened, the water pump 123 is operated.

Specifically, the water in the first level water plate 122 is delivered into the water distributing pipes by the water pump 123, and the water is evenly distributed to the left adiabatic cooling pad 131 and the right adiabatic cooling pad 141 through the water holes on the water distributing pipes, so that the adiabatic cooling pads on both sides are uniformly wetted, and the water can be evaporated on the surfaces of the two adiabatic cooling pads.

Simultaneously, under the suction of the blowers 220, outdoor fresh air passes through the outdoor air inlet 115 and the bag filter 1151 to enter the air inlet side chamber 150 of the main section 100. When the outdoor fresh air passes through the left adiabatic cooling pad 131 and the right adiabatic cooling pad 141, the humidity of the air is increased and the temperature is decreased due to the endothermic evaporation of the water in the adiabatic cooling pads, the cooled air then passes through the air outlet side chamber 160 and the blowers 220 in sequence, and is sent into indoor space via the indoor air supply outlet 214.

The low temperature air sent into indoor space is heat exchanged with the warm air discharged by the heat-generating electronic equipment in the equipment room and transforms into high temperature air, the heated air is discharged out of indoor space via an exhaust fan or an exhaust valve provided at a remote end under the positive indoor pressure.

d) Fresh air natural cooling - evaporative cooling - indoor return air mode:

When the fresh air natural cooling mode and evaporative cooling mode are in operation at the same time and the relative humidity of outdoor fresh air is high, due to the operation of evaporative cooling mode of the unit, the relative humidity of the air supply may be too high, resulting in condensation inside the unit. In such a case, the indoor return air valve 113 is opened, the blowers 220 are in operation, the evaporating and condensing section 20 is opened, and the water pump 123 is in operation.

Specifically, under the suction of the blowers 220, outdoor fresh air passes through the outdoor air inlet 115 and bag filter 1151 to enter the air inlet side chamber 150 of the main section 100, while indoor warm air passes through the indoor return air inlet 112 and the indoor return air valve 113 to enter the air inlet side chamber 150 of the main section 100, the outdoor fresh air and the indoor warm air are mixed in the air inlet side chamber 150 to formed a mixed air with raised temperature and lowered humidity, the mixed air then is transformed into low temperature air by passing through the left adiabatic cooling pad 131 and the right adiabatic cooling pad 141. The low temperate air passes through the air outlet side chamber 160 and the blowers 220 in sequence again, and then is sent into indoor space via the indoor air supply outlet 214. In this way, it is possible to prevent condensation on the surface of the electronic equipment in the equipment room due to the high relative humidity of the air supply, so as to lower the temperature of the electronic equipment while ensuring the safety of the electronic equipment.

All of the above operating modes are operated by the fresh air natural cooling mode or combined with the water evaporation cooling mode. This not only meets the requirement of cooling throughout the year, but also has a significant effect on energy saving due to the fact that the unit has no energy-intensive compressor but only blowers and a water pump with minimal power consumption at some certain periods of time.

From the above, the air conditioning unit of the present invention has the following technical effects:

Firstly, outdoor fresh air is filtered by the bag filter 1151 first and then enters the adiabatic cooling pads of the evaporating and condensing section. The outdoor air can be efficiently filtered by the bag filter 1151 which effectively intercepts a large amount of fine dust in outdoor fresh air and improves the cleanliness of the outdoor fresh air entering the evaporating and condensing section, and thus prevents dirt blocking, bacteria growth and the like on the adiabatic cooling pads caused by the direct influx of the outdoor fresh air carrying a large amount of dust into the evaporating and condensing section. It is thus clear that, the present invention can significantly improve the purification effect to the outdoor fresh air by disposing the bag filter 1151 on the air inlet side of the adiabatic cooling pads of the evaporating and condensing section.

Secondly, since the evaporating and condensing section 20 includes at least a pair of adiabatic cooling pads, the area of the adiabatic cooling pads for heat exchange is increased so that the cooling capacity per unit volume is significantly increased, this is conducive to an effective cooling of the air and thus conducive to improve the heat dissipation to the equipment room.

Thirdly, in the present invention, in the case where the amount of intake air remains the same, since the surface area of the adiabatic cooling pads, through which the air in the air inlet side chamber 150 flows into the air outlet side chamber 160, is increased, the speed of the air flowing through the adiabatic cooling pads is relative small. In this way, it is possible to avoid the case that water is carried away from the adiabatic cooling pads due to the high speed of air passing through the adiabatic cooling pads, thereby avoiding the damage of the equipment in the equipment room caused by the air with high humidity entering the equipment room. In other words, in the case of the air volume being constant, since the surface area of the adiabatic cooling pads in the windward side is increased, it is possible to reduce the air resistance of the air when it flows through the adiabatic cooling pads. In this way, speed of air can be lower when it passes through the adiabatic cooling pads without increasing the power of the blower of the air conditioning unit, thereby preventing the case that water is carried away from the adiabatic cooling pads by the air, and avoiding the damage of the equipment in the equipment room caused by the air with high humidity entering the equipment room.

The foregoing descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the scope of the present invention.

For example, in the above mentioned embodiments, the pair of blowers 220 are installed in the fan section housing 210 of fan section 200, fan section openings 212 corresponding to the pair of blowers 220 respectively are provided on the top panel 211 of the fan section housing 210. However, the present invention is not limited to this. A large-power blower may also be installed in the fan section housing 210. The power of this single blower can be equal to the sum of the aforementioned two blowers 220, and correspondingly, only one fan section opening is needed on the top panel 211 of the fan section 200.

Claims

1. An air conditioning unit, including a main section (100), within which an evaporating and condensing section (20) having adiabatic cooling pads are provided, wherein the main section (100) has:

an outdoor air inlet (115);

an indoor return air inlet (112);

a bag filter (1151 ), which is located in the main section (100) and installed at the outdoor air inlet (115);

an air inlet side chamber (150) formed in the main section (100), which outdoor air from the outdoor air inlet (115) enters after being filtered by the bag filter (1151 ) and indoor air from the indoor return air inlet (112) enters;

an air outlet side chamber (160), at least a portion of which is located on both sides of the air inlet side chamber (150), and which the air inside the air inlet side chamber (150) enters via the adiabatic cooling pads;

a pair of the adiabatic cooling pads (131, 141), which are respectively provided between the air inlet side chamber (150) and the two air outlet side chambers (160).

2. The air conditioning unit according to the claim 1, wherein the evaporating and condensing section (20) includes a first level water plate (122) installed in the main section (100), the first level water plate (122) has a groove portion (1221) with its opening facing upwards, a flanging portion (128 ) provided at the top of the sidewall of the groove portion and extending outward in the left-right direction thereof, a turnup ( 129 ) formed integrally at the edge of the flanging portion and extending upwards, and a mounting plate (1281) located above the flanging portion with its edge connecting with the inner surface of the turnup (129) , the pair of adiabatic cooling pads (131, 141) are vertically and symmetrically provided on the mounting plate (1281) , a water hole (1282) is provided on the part of the mounting plate (1281) directly facing the adiabatic cooling pads (131, 141), the internal space of the main section (100) is divided into the air inlet side chamber (150) and the air outlet side chamber (160) by the first level water plate (122) and the pair of adiabatic cooling pads (131, 141) .

3. The air conditioning unit according to the claim 1, wherein the evaporating and condensing section ( 20 ) further includes water distributing pipes (132, 142) at the top end of the adiabatic cooling pads (131,141) for spraying water on the adiabatic cooling pads (131,

141) , and water pipes connecting with the water distributing pipes ( 132,

142) and used to deliver water thereto, the water distributing pipes (132,142) are detachably installed on the inner surface of the main section (100) and detachably connected to the water pipes (133,143) .

4. The air conditioning unit according to the claim 3, wherein at the top end of the adiabatic cooling pads (131, 141),a pair of upper baffles ( 135, 145 ) is installed below the water distributing pipes (132, 142 ) to divert the water sprayed by the water distributing pipes (132, 142) to the adiabatic cooling pads (131,141) .

5. The air conditioning unit according to the claim 1, wherein lower baffles (136, 146) are provided on the inlet side and the outlet side of the bottom of the adiabatic cooling pads (131, 141) , respectively, the bottom ends of the lower baffles (136, 146) are mounted on the adiabatic cooling pads (131, 141) , and the top ends of the lower baffles are inclined away from the adiabatic cooling pads (131, 141 ) .

6. The air conditioning unit according to the claim 1, wherein the unit further includes a blower (220) with an air inlet connecting with the air outlet side chamber (160) , at a portion of the adiabatic cooling pads (131,141) close to the blower (220) , flow equalizer plates (134, 144) are installed on the inlet side of the adiabatic cooling pads (131, 141) .

7. The air conditioning unit according to the claim 1, wherein the outdoor air inlet (115 ) is provided on a back panel (114) of the main section (100), the pair of adiabatic cooling pads ( 131, 141 ) are provided separately on the left and right sides of the bag filter (1151 ) when seen from the front of the air conditioning unit (10), a front panel (119) of the main section (100) is detachably mounted on the main section (100) .

8. The air conditioning unit according to the claim 7, wherein the indoor return air inlet (112) is provided on the top plate (111) ofthe main section (100) , and an indoor return air valve (113 ) is installed at the indoor return air inlet (112) , the pair of adiabatic cooling pads ( 131, 141 ) are provided separately on the both left and right sides of the indoor return air valve ( 113 ) when seen from the front of the air conditioning unit (10) .

9. The air conditioning unit according to the claim 7, wherein an electric control box (161) is installed on the front side of the air conditioning unit (10) in the air outlet side chamber (160) .

10. The air conditioning unit according to the claim 6, wherein the unit further includes a fan section (200) provided separately from the main section (100) , the blower (220) is installed in the fan section (200) , a main section opening (118) connecting with the air inlet side chamber (150) is provided at the bottom of the main section (100) and a fan section opening (212) connecting with an air inlet of the blower (220) provided at the top of the fan section (200) , when the main section (100) and the fan section (200) are in the assembled state, the main section opening (118) connects with the fan section opening (212)

30 07 19

10. The air conditioning unit according to the claim 6, wherein the unit further includes a fan section (200) provided separately from the main section ( 100) , the blower (220) is installed in the fan section (200) , a main section opening (118) connecting with the air inlet side chamber (150) is provided at the bottom of the main section (100 ) and a fan section opening (212 ) connecting with an air inlet of the blower (220) provided at the top of the fan section (200) , when the main section (100) and the fan section (200) are in the assembled state, the main section opening (118) connects with the fan section opening (212) .

Amendments to the Claims have been filed as follows

Claims

30 07 19

1. An air conditioning unit, including a main section (100), within which an evaporating-and-condensing section (20) having adiabaticcooling pads is provided, wherein the main section (100) has:

an outdoor air inlet (115);

an indoor return air inlet (112);

a bag filter (1151), which is located in the main section (100) and installed at the outdoor air inlet (115);

an air inlet side chamber (150) formed in the main section (100), which outdoor air from the outdoor air inlet (115) enters after being filtered by the bag filter (1151) and indoor air from the indoor return air inlet (112) enters;

a pair of the adiabatic cooling pads (131, 141), which are respectively provided between the air inlet side chamber (150) and respective portions of the air outlet side chamber (160) on both sides of the air inlet side chamber (150).

2. The air conditioning unit according to the claim 1, wherein the evaporating-and-condensing section (20) includes a first level water plate (122) installed in the main section (100) , the first level water plate (122 )has a groove portion (1221 )with its opening facing upwards, a flanging portion (128) provided at the top of the sidewall of the groove portion and extending outward in the left-right direction thereof, a turnup (129 ) formed integrally at the edge of the flanging portion and extending upwards, and a mounting plate (1281) located above the flanging portion

30 07 19 with its edge connecting with the inner surface of the turnup (129) , the pair of adiabatic cooling pads (131, 141) are vertically and symmetrically provided on the mounting plate (1281) , a water hole (1282) is provided on the part of the mounting plate (1281) directly facing the adiabatic cooling pads (131, 141), the internal space of the main section (100) is divided into the air inlet side chamber (150) and the air outlet side chamber (160) by the first level water plate (122) and the pair of adiabatic cooling pads (131,141) .

3. The air conditioning unit according to the claim 1, wherein the evaporating-and-condensing section ( 20 ) further includes water distributing pipes (132, 142) at the top end of the adiabatic cooling pads (131, 141) for spraying water on the adiabatic cooling pads (131, 141), and water pipes connecting with the water distributing pipes (132, 142) and used to deliver water thereto, the water distributing pipes (132, 142) are detachably installed on the inner surface of the main section (100) and detachably connected to the water pipes (133,143) .

4. The air conditioning unit according to the claim 3, wherein at the top end of the adiabatic cooling pads (131, 141) , a pair of upper baffles ( 135, 145) is installed below the water distributing pipes (132,

142) to divert the water sprayed by the water distributing pipes (132, 142) to the adiabatic cooling pads (131,141) .

5. The air conditioning unit according to the claim 1, wherein lower baffles (136, 146) are provided on the inlet side and the outlet side of the bottom of the adiabatic cooling pads (131, 141) , respectively, the bottom ends of the lower baffles (136, 146) are mounted on the adiabatic cooling pads (131, 141) , and the top ends of the lower baffles are inclined away from the adiabatic cooling pads (131, 141) .

6. The air conditioning unit according to the claim 1, wherein the

30 07 19 unit further includes a blower (220) with an air inlet connecting with the air outlet side chamber (160) , at a portion of the adiabatic cooling pads (131, 141) close to the blower (220 ) , flow equalizer plates (134, 144) are installed on the inlet side of the adiabatic cooling pads (131, 141) .

7. The air conditioning unit according to the claim 1, wherein the outdoor air inlet (115) is provided on a back panel (114) of the main section (100), the pair of adiabatic cooling pads ( 131, 141 ) are provided separately on the left and right sides of the bag filter (1151 ) when seen from the front of the air conditioning unit (10), a front panel (119) of the main section (100) is detachably mounted on the main section (100) .

8. The air conditioning unit according to the claim 7, wherein the indoor return air inlet (112) is provided on the top plate (111) of the main section (100) , and an indoor return air valve (113) is installed at the indoor return air inlet (112) , the pair of adiabatic cooling pads ( 131, 141 ) are provided separately on the both left and right sides of the indoor return air valve (113) when seen from the front of the air conditioning unit (10) .