JP2010060225A - Air conditioner exhaust gas cooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce influence on the environment by lowering an exhaust gas temperature of an air conditioner in the summer season. <P>SOLUTION: In the air conditioner exhaust gas cooler 1, one mesh body 30 of a size covering an exhaust port of an air conditioner outdoor unit 100 is disposed at a certain distance from an outdoor unit casing front face, condensed water generated by an indoor unit during cooling-dehumidification operation of the air conditioner is guided and evenly sent downward to the mesh body, water films are adhered to a multiplicity of pores of the mesh body, and the exhaust gas temperature is lowered by contact with the water films when exhaust gas 102 pass through the mesh body. The mesh body is a ceramic-coated wire mesh, a finish thickness is about one millimeter, an opening rate is about 40%, each pore is a rounded rhombic shape with a diameter of about 3 millimeters, the periphery of the hole is thinned, and the holes are provided in slanted rows with respect to vertical-horizontal directions. The cooler 1 is supported at four points on the outdoor unit casing front face by attraction of columnar magnets 40, 40. and it is locked by hooking band fittings 50, 50 to the periphery of the casing. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to means for lowering the exhaust temperature of an air conditioner outdoor unit.

  During the summer, when the air conditioner is cooling or dehumidifying, hot air blows out from the outdoor unit.

  In recent urban summers, there are more hot days than the surrounding area, which is called the heat island phenomenon. The cause is variously discussed in relation to the urban structure, etc., and greening of the roof is recommended. However, there are a huge number of air conditioners in urban areas, and they are operated all at once on hot days, and their exhaust has the above characteristics, so the impact they have on the urban climate cannot be ignored. It is.

Various proposals have been made for measures for mitigating the influence of air conditioner exhaust on the environment, and some of the proposals can be found in the following patent documents.
JP 2007-255792 A JP 2004-150782 A

  The invention of Patent Document 1 relates to an outdoor unit cover that also serves as a planter in which a water-cooled exhaust cooling member that cools the exhaust of the outdoor unit with surplus water of the planter is placed at the front of the air conditioner outdoor unit, and Reference 2 is a fiber wetted with tap water Disclosed is an exhaust air treatment device that cools hot air by placing a body on an air-conditioner outlet.

  Condensate generated in the indoor unit during the air conditioning cooling / dehumidifying operation is usually led to the vicinity of the outdoor unit through a conduit and discarded. Since the water in this conduit has a head (pressure) of about 2 meters that matches the installation height of the indoor unit near the outdoor unit, there is room for effective use other than disposal.

  Reduce the exhaust temperature of the air conditioner during the summer and reduce the impact on the environment.

  The above-described problem can be solved by the following solution means.

Solution 1 (corresponding to claim 1)
A single mesh body that covers the exhaust port of the air conditioner outdoor unit is placed at a fixed distance from the front of the outdoor unit casing, and the condensed water generated during the cooling / dehumidifying operation of the air conditioner is guided to the mesh body uniformly. In an air conditioner exhaust cooler that causes a water film to adhere to a large number of holes in the mesh body and lowers the exhaust temperature by touching the water film when exhaust passes through the mesh body, the mesh body is ceramic coated A metal mesh with a finished thickness of about 1 mm, an aperture ratio of about 40 percent, and each hole has a rounded rhombus with a diameter of about 3 mm. Is provided as a row of oblique holes.

(Summary regarding Solution 1)
The present invention also follows a well-known cooling principle that removes the heat of vaporization of water from the exhaust. However, as a means for bringing the exhaust and water into contact with each other, the condensed water of the target air conditioner is used to make a single-piece mesh that can be easily attached to an outdoor unit. It is characterized by attaching a water film to the body.

  However, in that case, installing the mesh body in front of the outdoor unit should not hinder the flow of air inside and outside the outdoor unit and reduce the efficiency of the air-cooled heat exchanger. Install a certain distance (2-3 centimeters) from the front. By doing so, the air of the outdoor unit freely flows around the mesh body and does not get stuck.

  When condensate flows through the mesh body, it is necessary to pass through a header and a slit. Here, a slight indentation pressure is required. However, the water head of about 2 meters which the condensate has has an effective effect, so it needs to be pressurized again. Without the need for tap water.

  In order to effectively reduce the exhaust temperature by the mesh body of the present invention, a water film is formed in as many holes as possible in the mesh body, and the flow of the exhaust collides therewith to rupture the water film and form a water film again. It is desirable to repeat rapidly. However, since there is a marked difference in water film formation performance depending on the material and structure of the mesh body, its selection is important. However, it is not clear what kind of material and structure the mesh body has high water film forming performance.

  The inventor has experimentally confirmed that a water film can be easily formed at least in the network having the above structure, while the mesh having a different structure (for example, about 2.5 mm in diameter on an aluminum plate having a thickness of about 0.5 mm). I learned that water flowed through the holes on a perforated plate with millimeter round holes punched perpendicularly to the surface, and almost no water film was formed. With respect to this difference, the former sub-micron porous surface structure of the ceramic coat has an affinity for water, whereas the latter may be because such an affinity is lacking.

Solution 2 (corresponding to claim 2)
The cooler includes a mesh body, upper and lower headers of the mesh body, and mounting members, and is integrally assembled. The mesh body is rectangular, and the upper and lower mesh bodies are in the range corresponding to the lateral width of the outdoor unit exhaust port. On the lower side, short plate-like protrusions that form ears are formed and inserted into the slits of the upper and lower headers, and the mesh body is supported at four points on the front surface of the air conditioner outdoor unit casing with rigidity capable of self-supporting. The lower header is a pipe arranged on the upper and lower sides of the mesh body, and a slit that stops the system sandwiching the ear portion of the mesh body is cut on the side surface of each header, and the mounting member is provided on the back surface of the mesh body. A short columnar magnet fixed to the four corners, and a band metal fitting erected from the rear surface of the mesh body in order to lock the mesh body to the outdoor unit housing, and the condensate water pipe of the air conditioner indoor unit is Connected to one end of the header, condensed water is supplied to the surface of the mesh body through the slit, Surplus water flowing down the eye body is characterized in that it is discharged to the outside is collected to the header of the lower through the slit.

(Summary regarding Solution 2)
In the cooler of the present invention, the mesh body forming the center has sufficient rigidity, and the four corners of the surface are supported by the magnets on the front surface of the outdoor unit housing by the magnet. In addition, slipping is prevented by hanging a band bracket around the outdoor unit casing.

  Tubes constituting upper and lower headers are attached to the upper and lower ends of the mesh body through the ears of the mesh body. The width of the slit provided on the side surface of each header is slightly wider than the thickness of the mesh body so that water can easily flow.

  Short plate-like protrusions project as ears at the upper and lower ends of the mesh body in the range corresponding to the width of the air conditioner outdoor unit exhaust port, and condensed water is guided to the surface of the mesh body through the gap between the ear part and the slit. It is burned.

  A water film is difficult to form if oil or the like adheres to portions (surfaces) other than the holes of the mesh body. When the surface is wiped with a detergent, the contact angle between the surface and water is reduced, and the formation of a water film due to the surface tension of water is facilitated. In a place where the mesh body is exposed to light, it is possible to utilize the photodegradation catalytic action of titanium dioxide against dirt.

  The air conditioner exhaust cooler according to the present invention can effectively reduce the temperature of the air conditioner exhaust by the “water spray effect” using the condensed water that has been discarded in the past, thereby reducing the influence of the air conditioner exhaust on the environment. be able to.

  Moreover, the cooler of the present invention does not require a water tap or an electrical outlet in the vicinity, and can be simply attached by sucking with a magnet to an existing air conditioner outdoor unit and inserting the existing condensed water pipe into the header. Can be used for use.

  Preferred embodiments of the invention are illustrated by the following examples.

  Fig. 1 shows a state where the air conditioner exhaust cooler according to the present embodiment is mounted on the air conditioner outdoor unit and the condensate pipe of the indoor unit is connected, and Fig. 2 assembles the mesh body and upper and lower headers which are the main parts of the exhaust cooler. FIG. FIG. 3 is an enlarged plan view of the mesh body, and FIG. 4 is a view showing a state in which an attachment member is assembled to the mesh body.

  In the figure, reference numeral 1 is an air conditioner exhaust cooler, 10 and 20 are upper and lower headers, 11 and 21 are upper and lower slits, 30 is a mesh body, 31 and 32 are upper and lower ears, 40 is a columnar magnet, 50 Is a band bracket, 100 is an air conditioner outdoor unit, 101 is a condensed water pipe of the indoor unit, 102 is exhaust, and 103 is a drain.

  As shown in FIG. 1, the air conditioner cooler 1 according to the present embodiment is sucked by column magnets 40, 40 to the front surface of the casing of the outdoor unit 100 and supported by four points, and further, a metal strip 50 is provided around the casing. , 50 to be locked. One end of the upper header 10 of the cooler 1 is connected to the condensed water pipe 101 of the indoor unit, and supplies condensed water to the surface of the mesh body 30 through the slit 11. The lower header 20 collects excess water flowing down the mesh body 30 through the slit 21 and discharges it as a drain 103.

  Temperature measurement was performed in the state of FIG. The outside air temperature was 28 ° C., the air conditioner operation mode was “cooling”, the set temperature was 25 ° C., and the air volume was set to “strong”. However, the exhaust air volume of the outdoor unit 100 is unknown. The reading of the rod thermometer at 3 cm in front of the outdoor unit exhaust port was 48 ° C., and the temperature of the exhaust 102 immediately after passing through the mesh body 30 with the water film attached was 30 ° C. During the measurement, the water film rapidly disappeared and reattached.

  As shown in FIG. 2, the upper and lower headers 10 and 20 are two hard plastic pipes having a diameter of about 2.5 centimeters arranged in parallel above and below the mesh body 30. And 21 are provided. Except for the short plate-like projections that become the ear portions 31 and 32 on the upper and lower sides of the range corresponding to the width of the exhaust port of the mesh body 30, cut each ear portion into the upper and lower slits, The part is adhered to the outer wall of the header with an adhesive 7.

  As shown in FIG. 3, each hole of the mesh body 30 has a rounded rhombus with a difference of about 3 millimeters, and the periphery of the hole is thinned thinly, and arranged as a row of diagonal holes with respect to vertical and horizontal. Is done. This mesh body is a metal mesh ceramic coated with a finished thickness of about 1 millimeter and an aperture ratio of about 40 percent. The inventor paid attention to this ceramic coat body used in a commercially available fish roaster and found out that the water film forming performance was superior to other types of mesh bodies.

  As shown in FIG. 4, short columnar magnets 40, 40 are fixed to the four corners of the back surface of the mesh body 30, and band brackets 50, 50 for locking the mesh body to the outdoor unit housing at a right angle rearward from the back surface. Established.

An air conditioner outdoor unit is equipped with an exhaust cooler and an indoor unit drain pipe is connected. A state of assembling the mesh body and the upper and lower headers. The enlarged plan view of a mesh body. A state where the mounting member is fixed to the mesh body.

Explanation of symbols

1 Air Conditioner Exhaust Cooler 7 Adhesive 10 Upper Header 11 Upper Header Slit 20 Lower Header 21 Lower Header Slit 30 Mesh 31 Upper Ear 32 Lower Ear 40 Columnar Magnet 50 Band Metal 100 Air Conditioner Outdoor Unit 101 Air Conditioner Drain Pipe 102 Exhaust 103 drain

Claims (2)

A single mesh body that covers the exhaust port of the air conditioner outdoor unit is placed at a fixed distance from the front of the outdoor unit casing, and the condensed water generated during the cooling / dehumidifying operation of the air conditioner is guided to the mesh body uniformly. In an air conditioner exhaust cooler that causes a water film to adhere to a large number of holes in the mesh body and reduces the exhaust temperature by touching the water film when exhaust passes through the mesh body,
The mesh body is a metal wire coated with a ceramic, and has a finished thickness of about 1 mm, an aperture ratio of about 40%, and each hole has a rounded rhombus with a diameter of about 3 mm. Said cooler, characterized in that it is provided as a row of holes which are slanted and vertical and horizontal. The cooler includes a mesh body, upper and lower headers of the mesh body, and an attachment member, and is integrally assembled.
The mesh body is rectangular, and short plate-like projections are formed on the upper and lower sides of the mesh body in the range corresponding to the lateral width of the outdoor unit exhaust port, and inserted into the slits of the upper and lower headers. It is supported by four points on the front of the air conditioner outdoor unit housing with rigidity that can stand by itself.
The upper and lower headers are pipes that are arranged on the upper and lower sides of the mesh body, and slits are formed on the side surfaces of each header so as to hold the ears of the mesh body.
The mounting member includes a short columnar magnet fixed to the four corners of the back surface of the mesh body, and a band metal fitting standing rearward from the back surface of the mesh body to lock the mesh body to the outdoor unit housing,
The condensed water pipe of the air conditioner indoor unit is connected to one end of the upper header, condensed water is supplied to the surface of the mesh body through the slit, and excess water flowing down the mesh body is collected to the lower header through the slit. The cooler according to claim 1, wherein the cooler is discharged to the outside.

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