JP2009058188A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner that prevents insects from entering from an outside air inlet and improves maintainability. <P>SOLUTION: An outside air inflow part filter is removably provided between an outside air inlet of one ventilating passage of a total enthalppy heat exchanger for performing heat exchange between the outside air and the interior air and the total enthalpy heat exchanger. The total enthalpy heat exchanger is formed like a cylindrical body whose sectional form is substantially the same shape as the section of one ventilating passage, one end face of the cylindrical body is opened to the outside air inlet side, and one side surface is opened to the total enthalpy heat exchanger side. In the filter, one side surface is provided with a mesh filter part inhibiting entering of insects and allowing the air to pass therethrough. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner provided with insect intrusion prevention means for preventing insects from entering from an external air flow inlet of a built-in total heat exchanger.

  2. Description of the Related Art In recent years, air conditioners that perform air conditioning over all rooms of a house while being for general household use are becoming widespread.

  This type of air conditioner connects each room in a house with a duct, flows in outside air, cools or heats the air, supplies it to each room in the room, and cools or heats the room. The entire house is ventilated and air-conditioned by exhausting the air to the outside through the exhaust duct.

  This air conditioner is installed in a location facing the outdoor wall of a house, etc., to collect the thermal energy of the indoor unit, the outdoor unit, and the exhaust air from the room into the outdoor inflow air. A total heat exchanger is built in (see, for example, Patent Document 1).

  However, the air conditioner described in Patent Document 1 has a problem that, when the outside air flows in, a small insect that is outside together with the inflowing air enters the room through the outside air flow inlet duct.

For this reason, the following measures have been taken as means for preventing the insects from entering.
(1) Provide a filter directly at the outside air flow inlet installed on the building outer wall.
(2) A filter is provided at a portion where the outside air inflow duct is connected to the air conditioner.
(3) Insects are prevented from entering by a filter installed in the total heat exchanger.

However, these means have the following drawbacks.
With the means of (1), in order for the user to perform maintenance, the height of the external air flow inlet needs to be set at a level that can be reached without using a stepladder or the like, so the construction of the external air inflow duct is complicated. In addition, there are restrictions on the location of the air conditioner, and it is necessary to go outside during maintenance.
In the means (2), since the air conditioner or the total heat exchanger needs to be removed in order to maintain the filter, maintenance by the user is difficult.
With the means of (3), since there is a possibility that insects may invade from the gaps in the filter part of the total heat exchanger and the gaps in the path to the filter, it is difficult to prevent the insects from entering.
JP 2004-293777 A

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an air conditioner that prevents insects from entering from an external airflow inlet and improves maintainability.

  In order to achieve the above-described object, an air conditioner according to the present invention houses a total heat exchanger in a casing, and an external air flow inlet, an external air outlet, an indoor air inlet, indoor air on the outer surface of the casing. An outlet is provided, and an outside air inflow ventilation path communicating with the outside air outlet via one ventilation path provided from the outside air flow inlet to the total heat exchanger, and an opening from the indoor air inlet to the total heat exchanger An indoor air exhaust ventilation path communicating with the indoor air outlet through the other ventilation path is formed, and the ventilation air flowing through both the ventilation paths is heat-exchanged via the total heat exchanger. In the air conditioner in which the total heat exchanger unit is disposed in the main body, the total heat exchanger unit includes an outside air inflow portion filter in the ventilation path between the outside air flow inlet of the one ventilation path and the total heat exchanger. This external air inflow part filter is detachably provided. A cross-sectional shape having a cylindrical side surface that is substantially the same shape as the cross section of the one ventilation path, and a mesh surface that prevents insects from entering the surface facing the total heat exchanger and allows air to pass through. The cylindrical body has a structure in which one end surface is opened to the outside air flow inlet side.

  According to the air conditioner according to the present invention, it is possible to provide an air conditioner that prevents insects from entering from the outside air flow inlet and improves the maintainability.

  An air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a suction panel and an air filter of an air conditioner according to an embodiment of the present invention, FIG. 2 is a perspective view showing the back side of the air conditioner, and FIG. It is a disassembled perspective view.

  As shown in FIGS. 1-3, the air conditioner 1 which concerns on one Embodiment of this invention is the structure installed integrally with the wall surface of an indoor or a house, and is a structure which guides conditioned air to each room | chamber interior by a duct. . The casing of the main body 2 is formed of a thin metal plate, and has a height dimension of, for example, about 1530 mm, a width dimension of, for example, about 1650 mm, and a depth dimension of, for example, about 400 mm.

  An outside air inlet 2a, an indoor air outlet 2b, an indoor air inlet 2c, and an air-conditioned air outlet 2d are provided on the outer surface of the main body 2, and the indoor fan 3, the indoor heat exchanger 4, A heat exchanger unit 5 is accommodated.

  An outside air inlet duct 6 communicates with the outside air inlet 2a, an outside air outlet duct 7 communicates with the indoor air outlet 2b, and a short indoor air outlet duct whose one end is opened indoors at the air-conditioned air outlet 2d. 8 communicates.

  The indoor blower 3 is arranged at the top of the main body 2 and is configured to send conditioned air to the conditioned air outlet 2d that opens on the upper surface of the main body 2.

  The indoor heat exchanger 4 is disposed on the lower side of the indoor blower 3 and at a substantially central portion of the main body 2. The width dimension of the indoor heat exchanger 4 is formed as much as possible with the width dimension of the main body 2.

  Moreover, the height dimension of the indoor heat exchanger 4 is about half of the height dimension of the main body 2 and is inclined at a certain angle in the front-rear direction. Both the inclined upper end portion and the inclined rear end portion of the indoor heat exchanger 4 have a slight gap with respect to the one surface portion and the other surface portion of the inner wall of the main body 2. A drain pan 9 for receiving drain water generated in the indoor heat exchanger 4 is provided at the lower end of the indoor heat exchanger 4.

  Therefore, the heat exchange air introduced into the main body 2 always flows through the indoor heat exchanger 4 to exchange heat.

  Further, the total heat exchanger unit 5 is disposed at the lowermost part of the main body 2.

  As shown in FIGS. 4 to 7, the total heat exchanger unit 5 includes a housing-like unit main body 51. On the front surface of the unit main body 51, a unit main body indoor air inlet 51 a and an outside air inflow filter 10 are provided. A unit main body front air opening 51b and a unit main body indoor air outlet 51c are provided on the rear surface, and a unit main body outer air outlet 51d is provided on the upper surface.

  The outside air inflow portion filter 10 forms a part of the outside air ventilation passage 11 and has a cross-sectional outer shape substantially the same as that of the outside air ventilation passage 11a having a substantially fan-like cross section in the total heat exchanger inlet side. The external air inflow portion filter external airflow inlet 10b that forms the portion 10a and opens to one end side communicates with and opens to the unit main body external airflow inlet 51b, and the external air inflow portion filter front surface side opening 10c that opens to the other end side is the unit main body. It is exposed to the front opening 51e and is normally closed by the outside air inflow portion filter front lid 102.

  The outside air inflow portion filter front cover 102 includes a frame body 102a having an outer shape substantially the same as the cross-sectional outer shape of the outside air inflow portion filter 10, and a transparent window portion 102b formed integrally with the frame body 102a. By engaging the engaging portion 101b provided at the end portion of the outside air inflow portion filter cylindrical side surface portion 10a with the engaging portion 102c provided in the periphery of the outside air, it can be detachably attached to the outside air inflow portion filter 10.

  Further, in the outside air inflow portion filter 10, a mesh filter portion 101 is formed on the surface opposite to the total heat exchanger 13 of the outside air inflow portion filter cylindrical side surface portion 10a. The mesh filter unit 101 has a mesh size that allows air to pass but prevents passage of small insects. Accordingly, in the outside air inflow portion filter 10, the outside air that has flowed from the unit main body outside air flow inlet 51 b flows through the outside air inflow portion filter cylindrical side surface portion 10 a, bends at a right angle, and flows out through the mesh filter portion 101.

  The unit-side outside air flow inlet 51 b is connected to the outside air suction port 2 a and flows outside air into the total heat exchanger unit 5 via the outside air suction duct 6. The unit main body indoor air discharge port 51 c is connected to the indoor air discharge port 2 b and discharges the air heat-exchanged by the total heat exchanger unit 5 through the indoor air discharge 7.

  As shown in FIG. 8, a total heat exchanger 13 formed by laminating and stacking heat exchanger elements is disposed at a substantially central portion of the unit body 51, and this total heat exchanger 13 has a square shape in plan view, The first and second air inflow surfaces 13a and 13b of the total heat exchanger 13 are arranged so as to coincide with the depth direction of the unit body 51 and are inclined by 45 °.

  An outside air inflow fan 14 is provided on one side of the unit main body 51, and an indoor air discharge fan 15 is provided on the other side.

  Furthermore, the outside air cleaning filter 16 is detachably incorporated in the unit body 51 in the vicinity of the outside air inflow portion filter 10 through the unit body front opening 51e.

  As shown in FIG. 9, the outside air cleaning filter 16 is a protrusion protruding from a flange 11b provided on the unit body outside air outlet 51d side of the total heat exchanger inlet side outside air ventilation path 11a so that the outside air cleaning filter 16 can be attached and detached. The outside air cleaning filter 16 inserted from the unit main body front opening 51e side is pressed against the protrusion 11c and the connecting end 11d of the inlet side inflow passage 11a and is fixed in a state where the surrounding frame is sealed. .

  Therefore, the outside air cleaning filter 16 is arranged without gaps in the total heat exchanger inlet side outside air ventilation path 11a, and is also brought into close contact with the periphery of the outside air inflow portion filter 10 so that the outside air flowing through the total heat exchanger inlet side outside air ventilation path 11a can be reduced. Dust can be removed reliably.

  As described above, the total heat exchanger unit 5 including the outside air inflow filter 10 and the total heat exchanger 13 and the air conditioner 1 in which the total heat exchanger unit 5 is incorporated are heat exchange and air conditioning as follows. Is done.

  As shown in FIGS. 1, 2, and 8, the outside air flowing into the total heat exchanger unit 5 due to the rotation of the outside air inflow blower 14 is outside the unit main body via the outside air inflow duct 6 and the outside air inlet 2 a. From the air flow inlet 51b, it flows into the outside air inflow portion filter 10 inserted in the outside air ventilation path 11a of the total heat exchanger, dust is removed and removed by the mesh filter portion 101, and fine dust is removed by the clean filter 16. Thereafter, it is sent to the total heat exchanger 13. Heat is exchanged between the first air inflow surface 13a formed in the total heat exchanger 13 through one air passage and from the second air inflow surface 13b through the other air passage to the exhaust indoor air. It passes through the heat exchanger outlet side outside air ventilation path 11b and is blown into the body 2 from the unit body outside air outlet 51d. This outside air is mixed with a part of the indoor air sucked into the main body 2 through the air filter 17 from the left and right side portions of the suction inlet front panel 2e of the air conditioner main body 2, and is cooled by the indoor heat exchanger 4 or It is heated and blown into each room from the air-conditioned air outlet 2d through the air-conditioned air outlet duct 8 by the operation of the indoor blower 3, and air conditioning in each room is performed.

  On the other hand, the indoor air sucked into the main body 2 through the air filter 17 from the left and right side portions of the suction port front panel 2e of the air conditioner main body 2 due to the rotation of the blower 15 for deriving the outside air is The second air formed in the total heat exchanger 13 is sucked into the total heat exchanger inlet side discharge indoor air ventilation path 12a from the unit main body indoor air inlet 51a formed on the front surface of the total heat exchanger unit 5. The air flows into the other ventilation path from the inflow surface 13b, exchanges heat with the outside air passing through the one ventilation path from the first air inflow surface 13a, passes through the total heat exchanger outlet side discharge indoor air ventilation path 12b, and passes through the unit main body. It is sent from the air discharge port 51c to the indoor air discharge duct via the indoor air discharge port 2b and discharged to the outside.

  In such an outside air inflow process, when insects are contained in the inflowing outside air, the insects are sent into the cylindrical side surface portion 10a of the outside air inflow portion filter 10, but the total heat exchanger unit 5 is provided by the mesh filter portion 101. Is prevented from entering the total heat exchanger 13 side, and the front side of the outside air inflow portion filter 10 is closed by the outside air inflow portion filter front cover 102, so that the inside of the outside air inflow portion filter 10 temporarily. To be held in.

  When the air conditioner 1 is operated for a long time, maintenance of the outside air inflow portion filter 10 and the outside air cleaning filter 16 is required. In this maintenance, the suction port front panel 2e provided on the front surface of the main body 2 and the indoor air filter 17 disposed behind the suction port front panel 2e are removed, and the total heat exchanger unit 5 is exposed.

  The outside air cleaning filter 16 is removed, dust-removed, and incorporated again. On the other hand, the outside air inflow portion filter 10 can confirm the presence or absence of insect dead bodies from the transparent window 102b. If dead bodies are present or if dust is collected, they are removed from the total heat exchanger unit 5 and further locked. After disengaging the part 102c and the locking part 101b, removing the lid 102, throwing away the insect carcasses and dust, engaging both the locking parts 101b, 102c, attaching the lid 102, and The inflow filter 10 is incorporated in the total heat exchanger unit 5.

  Since the outside air inflow portion filter 10 is freely attached to and detached from the total heat exchanger unit 5, maintenance from the indoor side is facilitated.

  In addition, since insects contained in the outside air are captured by the outside air inflow portion filter 10 and are accommodated in the outside air inflow portion filter 10, when the outside air inflow portion filter 10 is removed, insect dead bodies are found in the inlet side inflow passage 11a. It can prevent the remaining or insects from scattering.

  According to the air conditioner of the present embodiment, an air conditioner that prevents insects from entering from the outside airflow inlet and improves maintainability is realized.

The perspective view which removes and shows the suction panel and air filter of the air conditioner which concern on one Embodiment of this invention. The perspective view which shows the back side of the air conditioner which concerns on one Embodiment of this invention. The perspective view which decomposes | disassembles and shows the air conditioner which concerns on one Embodiment of this invention. The side view of the total heat exchanger unit used for the air conditioner which concerns on one Embodiment of this invention. The rear view of the total heat exchanger unit used for the air conditioner which concerns on one Embodiment of this invention. The perspective view which shows the taking-out state of the external air inflow part filter and clean filter which are integrated in the air conditioner which concerns on one Embodiment of this invention. The perspective view which shows the removal state of the cover body used for the air conditioner which concerns on one Embodiment of this invention. The longitudinal cross-sectional view of the total heat exchanger unit used for the air conditioner which concerns on one Embodiment of this invention. Sectional drawing in alignment with the AA of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Main body, 2a ... Outside air inlet, 2b ... Indoor air outlet, 2c ... Indoor air inlet, 2d ... Air-conditioning air outlet, 2e ... Suction inlet front panel, 3 ... Indoor fan, 4 ... indoor heat exchanger, 5 ... total heat exchanger unit, 51 ... unit main body, 51a ... unit main body indoor air inlet, 51b ... unit main body outside air inlet, 51c ... unit main body indoor air outlet, 51d ... outside unit main body Air flow outlet, 51e ... Front opening of unit body, 6 ... Outside air suction duct, 7 ... Indoor air discharge duct, 8 ... Air-conditioning air outlet duct, 9 ... Control device, 10 ... Outside air inflow filter, 10a ... Outside air inflow portion filter cylinder Side surface portion, 10b ... Outside air inflow portion filter outside air flow inlet, 10c ... Outside air inflow portion filter front side opening, 101 ... Mesh filter portion, 102 ... Outside air inflow portion filter front lid, 02a ... Frame portion, 102b ... Transparent window portion, 11 ... Outside air passage, 11a ... Total heat exchanger inlet side outside air passage, 11b ... Total heat exchanger outlet side outside air passage, 12 ... Exhaust indoor air passage, 12a ... total heat exchanger inlet side exhaust indoor air ventilation path, 12b ... total heat exchanger outlet side exhaust indoor air ventilation path, 13 ... total heat exchanger, 13a ... first air inflow surface, 13b ... second air inflow Surface, 13c ... 1st air outflow surface, 13d ... 2nd air outflow surface, 14 ... Blower for inflow of outside air, 15 ... Blower for exhausting indoor air, 16 ... Outside air cleaning filter, 17 ... Air filter for room air.

Claims (3)

The total heat exchanger is stored in the housing,
Provided on the outer surface of the housing an external airflow inlet, an external airflow outlet, an indoor air inlet, an indoor air outlet,
An outside air ventilation path that communicates with the outside airflow outlet via one ventilation path provided in the total heat exchanger from the outside airflow inlet and a second ventilation path provided in the total heat exchanger from the indoor airflow inlet. Forming an indoor air exhaust ventilation path communicating with the indoor air outlet port,
In the air conditioner in which the total heat exchanger unit in which the ventilation air flowing through both the ventilation paths is heat-exchanged via the total heat exchanger is disposed in the main body,
The total heat exchanger unit is detachably provided with an outside air inflow filter in the ventilation path between the outside air flow inlet of the one ventilation path and the total heat exchanger,
This outside air inflow portion filter has a cylindrical side surface portion whose cross-sectional shape is substantially the same as the cross section of the one ventilation path, and that insects invade the surface of the side surface portion facing the total heat exchanger. An air conditioner characterized by having a mesh surface that blocks air and allows air to pass through, and has a structure in which one end surface of the cylindrical body opens to an external air flow inlet. The total heat exchanger unit is
On the back surface of the housing, an external air flow inlet and an indoor air discharge port are provided, and a total heat exchanger is disposed in a substantially central portion,
An opening is provided on the front surface of the ventilation passage opposite to the outside air flow inlet so that the outside air inflow filter can be detached from the opening, and the opening is appropriately opened and closed. The air conditioner according to claim 1, further comprising a lid that seals the air conditioner. The total heat exchanger unit is provided with a clean filter for removing fine dust in a ventilation path between an outside air inflow portion filter and the total heat exchanger, and the clean filter is detachable from the opening. The air conditioner according to claim 2.

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