JP3813267B2 - Air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner having an air filter for air cleaning of the air related to an air conditioner which forms to circulate air in the conditioning chamber, in particular circular.
[0002]
[Prior art]
Is generally to this type of air filter, there is an electrostatic precipitator unit for dust collection as described in JP-A-4-310249.
[0003]
A conventional electrostatic dust collection unit is provided with an electrostatic filter having a charging property and a filter charger for applying an electric field to the electrostatic filter by electrode members having different polarities, and electrostatic charges charged by both electrode members are provided. The filter was used to remove dust and dirt in the air.
[0004]
In this publication, a sheet-like electrostatic filter that crosses the air flow direction is shown, and in addition, in the publication described in JP-A-5-154407, pleats meander across the air flow direction. A shaped electrostatic filter was shown.
[0005]
In addition, there are some in which flat electrode members having different polarities are arranged in parallel to the air flow direction between the valleys defined by the electrostatic filter.
[0006]
Furthermore, Japanese Patent Laid-Open No. 4-176310 discloses a honeycomb-shaped electrostatic filter that partitions a ventilation path parallel to the air flow direction, and this electrostatic filter is disposed on the introduction side of the ventilation path. An electric field is applied by one electrode member and the other electrode member arranged on the discharge side of the air passage.
[0007]
[Problems to be solved by the invention]
In such a conventional technique, dust, dust, pollen and the like are collected after being charged. At the same time, general bacteria such as influenza virus, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis and fungi can be collected.
[0008]
However, collected bacteria such as influenza virus may exist on the filter as they are, or may further propagate, and once collected, the bacteria once collected will diffuse again into the conditioned room when the filter is disposed or by some impact. There was a fear.
[0009]
This invention provides the air conditioner provided with the filter which can suppress propagation of bacteria with respect to such a problem.
[0010]
[Means for Solving the Problems]
In the first aspect of the present invention, an air passage through which air in the conditioned room circulates is provided, and an air filter (19) and a heat exchanger (7) are sequentially provided in the air passage from the windward side toward the leeward side. In the arranged air conditioner, the air filter (19) includes a filter element (52) having a large number of honeycomb-shaped ventilation paths (57), and the filter element (52) includes a charged first nonwoven fabric and and a second nonwoven fabric obtained by further impregnating agents including chlorhexidine gluconate to the first nonwoven fabric, overlapping, characterized by being configured using a nonwoven fabric composed.
[0011]
According to a second aspect of the present invention, in the air conditioner according to the first aspect, the filter further comprises a deodorizing filter containing activated carbon particles on the leeward side of the ventilation path.
[0012]
[0013]
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view illustrating a general separated air conditioner for home use. This type of air conditioner includes a wall-mounted use side unit A arranged indoors and a heat source side unit B arranged outdoor, both connected by a refrigerant pipe 300 and a signal line, as shown in FIG. A refrigeration cycle is configured.
[0015]
In the refrigeration cycle shown in FIG. 2, reference numeral 1 denotes a so-called inverter compressor (variable capacity compressor) of a variable speed. As a method of controlling the rotation speed, when an induction motor is used as a drive source of the compressor, the frequency of the AC power applied to the motor is changed to change the synchronous rotation speed of the induction motor, and the compressor is driven. When a DC motor is used as the source, it is common to change the average voltage (or energization current) of DC power applied to the motor.
[0016]
Reference numeral 2 denotes a muffler for suppressing vibration and noise caused by pulsation of refrigerant discharged from the inverter compressor (hereinafter simply referred to as “compressor”) 1.
[0017]
3 four-way switching valve for switching the flow of refrigerant during the cooling / heating operation, 4 the heat source-side heat exchanger, 5 Capilla library tube, the screen filter 6, 7 utilization side heat exchanger, 8 the muffler, 9 is an accumulator, and 10 is an electromagnetic on-off valve.
[0018]
The refrigerant discharged from the compressor 1 is a solid line arrow (cooling operation), a dotted line arrow (heating operation), a solid line middle point arrow (depending on the switching position of the four-way switching valve 3 and the opening / closing of the electromagnetic switching valve 10 ( The direction of flow is determined according to the three modes (defrosting operation).
[0019]
During cooling operation, as indicated by solid arrows in FIG. 2, the refrigerant discharged from the compressor 1 is a muffler 2, a four-way switching valve 3, a heat source side heat exchanger (outdoor heat exchanger) 4, and a capillary as a decompressor. The refrigerant circuit is circulated in the order of the tube 5, the screen filter 6, the use side heat exchanger (indoor heat exchanger) 7, the muffler 8, the four-way switching valve 3, and the accumulator 9, and the use side heat exchanger 7 acts as an evaporator. Then, the cooling operation of the conditioned room is performed.
[0020]
During the heating operation, as indicated by the broken line arrows, the refrigerant discharged from the compressor 1 includes a muffler 2, a four-way switching valve 3, a muffler 8, a use side heat exchanger (indoor heat exchanger) 7, a screen filter 6 , The refrigerant circuit is circulated in the order of the capillary tube 5, the heat source side heat exchanger (outdoor heat exchanger) 4, the four-way switching valve 3, and the accumulator 9, and the use side heat exchanger 4 acts as a condenser to heat the conditioned room. Driving is performed.
[0021]
When the electromagnetic on-off valve 10 is opened during such heating operation, a part of the high-temperature refrigerant discharged from the compressor 1 is led to the heat source side heat exchanger 4 and functions as an evaporator. Increase the temperature of the exchanger.
[0022]
Thereby, the heat source side heat exchanger 4 becomes difficult to form frost, and when the temperature of the heat source side heat exchanger 4 becomes sufficiently high, the frost formed on the heat source side heat exchanger 4 can be melted. In addition, when the frosting of the heat source side heat exchanger 4 proceeds in spite of such an operation (such as when the outside air temperature is particularly low), it is compulsory by reverse cycle defrosting (flow of cooling operation indicated by solid line arrow). Defrosting is performed.
[0023]
FIG. 3 is a sectional view of the use side unit A. FIG. In this figure, 100 indicates a main body frame. The main body frame 100 accommodates the cross flow fan 17, the use side heat exchanger 7, the drain pan 27, and the air cleaner 19, the vertical blades 31, and the horizontal blades 35.
[0024]
A cabinet 101, a filter 103, and a front panel 105 are attached to the front surface of the main body frame 100.
[0025]
A suction port 41 is formed in the upper surface of the main body frame 100, the front and upper surfaces of the cabinet 101, and the front panel 105, and a blower outlet 43 is formed in the diagonally lower front side of the cabinet 101.
[0026]
The air outlet 43 is connected to an air outlet passage 49 inside the main body frame 100, and the air outlet passage 49 guides air from the blower 17 to the air outlet 43.
[0027]
The outlet passage 49 is surrounded by the outlet frame 109 and the main body frame bottom plate 15. According to this embodiment, the blowing frame 109 supports the drain pan 27 on the upper surface, and supports the wind direction changing blades including the vertical blades 31 and the horizontal blades 35 on the lower surface.
[0028]
Reference numeral 115 denotes a protrusion for locking the cabinet 101 to the groove 117 of the main body frame 100.
[0029]
In the air conditioner configured as described above, the air in the conditioned room sucked from the suction port 41 of the front panel 105 is blown out of the air cleaner 19 and the use side heat exchanger 17 by the rotation of the cross flow fan 17. After passing through the passage 49, the discharge direction of the conditioned air is adjusted by the vertical blade 31 and the horizontal blade 35 and returned to the conditioned room.
[0030]
FIG. 4 is an exploded perspective view of the air purifier (air filter ) 19. In this figure, the air cleaner 19 includes a main frame 51 having a handle 50 formed therein, and a dust collecting / deodorizing filter element 52, an insulating cover 53, a wire mesh electrode 54, and an auxiliary frame 55 are stacked in the main frame 51. The dust collecting / deodorizing filter element 52 is sandwiched.
[0031]
A part of the main frame 51 is provided with a contact 56 for negative electrode, which is grounded.
[0032]
In the dust collection / deodorization filter element 52, corrugated plate members 52a and flat plate members 52b, which are formed into corrugated plates so as to form a large number of honeycomb holes 57 (ventilation passages) as shown in FIG. Is.
[0033]
The corrugated plate member 52a and the flat plate member 52b are a flat plate-like first nonwoven fabric obtained by heat embossing charged polypropylene fibers, and a drug containing chlorhexidine gluconate in addition to the nonwoven fabric (for example, Yamato Chemical). It is formed of a non-woven fabric bonded to a second non-woven fabric to which Amorden TOS-3 manufactured by Kogyo Co., Ltd. is attached. Note that gluing, pressure bonding, welding, or the like can be used for laminating the first and second nonwoven fabrics.
[0034]
In the honeycomb filter element 52, a net-like deodorizing filter 52c obtained by fixing granular activated carbon to a resin net is provided on the main frame 51 side.
[0035]
The deodorizing filter 52c may be obtained by adhering activated carbon particles to reticulated urethane, and may further adsorb activated alumina-based deodorizing agent or the like at the same time.
[0036]
As described above, since the activated carbon 52c is directly fixed to the filter element 52, the dust collection / deodorization filter element 29 has a dust collection and deodorization function and is thin and lightweight. Therefore, the air filter 19 can be downsized.
[0037]
In the case of applying a voltage to the filter element 52, in this embodiment is omitted electrode for a negative electrode using activated carbon 52c as a negative electrode.
[0038]
The insulating cover 53 covers the dust collection / deodorization filter element 52 so as to insulate the charged dust collection / deodorization filter element 52 from the connection part 58 of the wire mesh electrode 54. In particular, the insulating cover 53 is effective in preventing a decrease in insulation between the metal mesh electrode and the charging filter when the filter element 52 contains a lot of moisture.
[0039]
A positive electrode is applied to the metal mesh electrode 54, but the metal mesh itself is covered with insulation, and only the connection portion 58, which is a part of the metal mesh, is not covered, and is in electrical contact with the contact 59 of the auxiliary frame 55. The contact of the auxiliary frame 55 is connected to the electrode and a positive voltage is applied.
[0040]
In the present embodiment, the charged charge is increased by using the electrodes 56 and 59 for the dust collection / deodorization filter element 52, but the dust collection / deodorization filter element 52 itself is made of a charged non-woven fabric and is itself charged. Therefore, a sufficient dust collection effect can be obtained without using the electrodes 56 and 59 and the wire mesh electrode 54. However, the dust collection / deodorization filter element 52 with a small charge is shortened and the replacement period is shortened.
[0041]
Air conditioner having an air purifier 19 configured in this way, after the air conditioner in the use-side heat exchanger 7 the air of the conditioning chamber, the circulation return the conditioned air to be air-conditioned room, crossflow This is done by driving the fan 17 . At this time, more the air in the room to be air-conditioned passes through the air cleaner 19, in the charged first nonwoven side, mainly dust in the air, dust, pollen, etc. removed, the second nonwoven side in, fungi, influenza virus, Escherichia coli, removes bacteria, including Staphylococcus aureus, Pseudomonas aeruginosa and Bacillus subtilis, penetrates into beating the cell membrane of bacteria such as chlorhexidine gluconate virus simultaneously, the inside of the nucleic acids, proteins It decomposes itself to inactivate bacteria such as viruses.
[0042]
Further, a deodorizing action can be obtained by the deodorizing filter 52c.
[0043]
【The invention's effect】
As described above, in the air conditioner of the present invention, the air filter disposed on the windward side of the heat exchanger has a filter element having a large number of honeycomb-shaped ventilation passages, and the filter element is a charged first filter element. Since the first non-woven fabric and the second non-woven fabric in which a chemical containing chlorhexidine gluconate is further attached to the first non-woven fabric are used, the filter element includes the first non-woven fabric. The filter containing chlorhexidine gluconate affixed to the second non-woven fabric can be sterilized by inactivating bacteria containing influenza virus without having to increase the size, while having a dust collection effect. is there.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a separation type air conditioner.
FIG. 2 is a refrigerant circuit diagram used for the separation type air conditioner shown in FIG.
FIG. 3 is a cross-sectional view of a main part of a usage-side unit A.
4 is an exploded perspective view of the air cleaner shown in FIG. 3. FIG.
[Explanation of symbols]
7 Use-side heat exchanger (heat exchanger)
19 Air Cleaner (Air Filter)
52 Dust collection / deodorization filter element (filter element)
52a Wave-like member 52b Plate-like member 52c Deodorizing filter 57 Honeycomb hole (honeycomb-like air passage)

Claims (2)

In the air conditioner having an air passage through which air in the conditioned room circulates, and in which an air filter (19) and a heat exchanger (7) are arranged in order from the windward side to the leeward side.
The air filter (19) includes a filter element (52) having a large number of honeycomb-shaped ventilation passages (57). The filter element (52) is connected to the first non-woven fabric charged and the first non-woven fabric. Furthermore , the air conditioner characterized by comprising using the nonwoven fabric which overlaps with the 2nd nonwoven fabric to which the chemical | medical agent containing chlorhexidine gluconate was attached . 2. The air conditioner according to claim 1, wherein the filter element (52) further includes a deodorizing filter (52 c) containing activated carbon particles on a leeward side of the ventilation path (57) .

Images