JP4323018B2 - Air conditioner indoor unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an indoor unit in an air conditioner composed of an outdoor unit and an indoor unit.
[0002]
[Prior art]
The indoor unit of the air conditioner accommodates a heat exchanger and a blower in the unit body, sucks room air into the unit body by operating the blower, passes the heat exchanger, exchanges heat, and further passes through the blower. And blow out indoors.
[0003]
In addition to such a heat exchange effect on indoor air, as an added value, an indoor unit that removes and cleans impurities such as dust, dust, and water vapor contained in recent indoor air is provided.
[0004]
That is, very fine dust or dirt is floating in the indoor air, and even if it is sucked, it is not harmful to the human body, but it does not necessarily have no effect when the resistance is weak. Moreover, since water vapor contained in the air adheres to fixtures and walls and causes mold, removal of these dust, dust and water vapor is an extremely effective condition.
[0005]
On the other hand, Japanese Utility Model Laid-Open No. 62-124421 and Japanese Patent Application Laid-Open No. 11-72240 disclose an air conditioner incorporating a negative ion generator, which supplies negative ions directly or with heat-exchanged air into the room. . It is known that this negative ion is absorbed by the human body, thereby activating cellular tissues, promoting waste discharge, and improving metabolism.
[0006]
[Problems to be solved by the invention]
However, the above publication only describes the arrangement of the electrode part of the negative ion generator in the vicinity of or in the air passage, and the details are unknown.
[0007]
Simply generating negative ions and supplying them indoors is easily affected by dust, dust, and water vapor contained in the air. It is.
[0008]
The present invention has been made paying attention to the above circumstances, and the object thereof is to provide each means on the premise that both a heat exchanger and a blower are provided, and both an air purifying means and a negative ion generating means are provided. By limiting the arrangement position of the air conditioner, it is intended to provide an indoor unit of an air conditioner that can perform efficient air purification and negative ion supply.
[0009]
[Means for Solving the Problems]
In order to satisfy the above object, the present invention accommodates a heat exchanger and a blower in a unit body, sucks room air into the unit body, exchanges heat with the heat exchanger, and blows out the room through the blower. the air in the indoor unit of the air conditioner, to clean impurities is removed such as dust, dust, water vapor from the room air drawn into the unit body includes an electrostatic precipitator that will be placed on the air intake side of the heat exchanger It is arranged in the blower blower passage of the blower through which the purified air after passing through the cleaning means and the electrostatic precipitator passes. Negative ions are emitted along the blower blower passage and the negative ions are supplied into the room together with the purified air. Negative ion generating means, and a heat exchanger, an electric dust collector, and a control means for controlling the negative ion generating means,
The electrostatic precipitator has a positive potential charged electrode that ionizes dust and dust by applying a DC high voltage between a discharge electrode composed of ionizing wires and a counter electrode to cause corona discharge, It is a corrugated electrode that is arranged on the downstream side of the air flow and is provided with a conductive electrode on one side and laminated with a gap, and is composed of a negative potential dust collecting electrode that sucks ionized dust and dust,
The negative ion generation means accommodates a negative ion generation electrode comprising an electrode plate to which a high voltage is applied and a needle-like electrode that projects integrally from the side surface of the electrode plate and emits negative ions from the tip, and a negative ion generation electrode And a protective container to be protected and a ground terminal connected to the protective container to increase the potential difference between the needle electrode, and the needle electrode protruding from the electrode plate has its tip from the upstream side to the downstream side The grounding terminal is attached to the air flow downstream side of the needle electrode,
The control means controls the heat exchanging action by the heat exchanger, the air purifying action by the air purifying means, and the negative ion generating action by the negative ion generating means in conjunction with each other.
[0015]
By adopting the means for solving the above problems, the arrangement positions of the air cleaning means and the negative ion generating means are determined, and efficient air cleaning and negative ion supply can be performed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the indoor unit of an air conditioner is comprised.
The unit main body 1 includes a front panel 2, an upper panel 3, and a rear plate 4 integrally provided with both side portions, a rear portion, and a bottom portion, and is formed in a horizontally long box shape.
[0017]
In the unit main body 1, an indoor heat exchanger 5 formed in a substantially inverted V shape in a side view is disposed. This indoor heat exchanger 5 is composed of a front heat exchanger portion 5a located on the front side and a rear heat exchanger portion 5b located on the back side, and particularly on the upper surface of the rear heat exchanger portion 5b. Auxiliary heat exchangers 5c are disposed along the pipes, and these are connected in series via pipes.
[0018]
A front drain pan 6a is disposed below the front heat exchanger section 5a, and a rear drain pan 6b is disposed below the rear heat exchanger section 5b. These front and rear drain pans 6 a and 6 b are integrally provided on the rear plate 4.
[0019]
Between the front side heat exchanger part 5a and the rear side heat exchanger part 5b which are the internal positions of the said indoor heat exchanger 5, the indoor air blower 7 provided with the crossflow fan is arrange | positioned. The rear plate 4 is bent from the back surface side to the bottom surface portion of the indoor blower 7 which is the lower portion of the rear drain pan 6b, and the air passage 8 is formed between the lower surface portion of the front drain pan 6a and its extended portion. .
[0020]
A blowout port 9 is provided in the lower part of the front panel 2 forming the tip of the air passage 8 and along the width direction. The air outlet 9 includes a combination of a plurality of vertical and horizontal louvers, and is provided with a wind direction guide portion 10 that automatically changes the air direction from the air outlet 9.
[0021]
On the other hand, a frame-like crosspiece is fitted into the upper panel 3, and this space portion is formed as an upper suction port 11. The front panel 2 is provided with front suction ports 12a and 12b having different structures in two stages of the upper side and the lower side, and has a hinge structure (not shown) along the upper edge so that it can be opened and closed with respect to the unit body 1. Make a suction grill. The front panel 2 has an R-shaped cross section so as to have a predetermined gap from the front heat exchanger portion 5a of the indoor heat exchanger 5.
[0022]
An air purifier 13 that is an air purifying means is disposed at a position close to the upper part on the front side of the front heat exchanger portion 5a facing the front suction port 12a of the front panel 2. That is, the air cleaner 13 is located in the space between the front heat exchanger portion 5a and the front panel 2.
[0023]
This air cleaner 13 is composed of an electrostatic precipitator 13A for the purpose of removing indoor dust, dust, and water vapor, and a high-performance deodorizing filter having a honeycomb activated carbon structure (not shown) for the purpose of removing indoor odors. It is arranged side by side on the above site.
[0024]
The electric dust collector 13A will be described in detail. As shown in FIG. 2A, the electric dust collector 13A includes a positive potential charging electrode (ionizer portion) 14 and a negative potential dust collection electrode (collector portion) 15.
[0025]
The charged electrode 14 applies a high DC voltage between the discharge electrode 14a called the ionization line and the counter electrode 14b to cause corona discharge, and ionizes dust particles. The dust collecting electrode 15 is formed by laminating sheets 15a each having a conductive electrode on one side, suctioning ionized dust / dust with a Coulomb force generated between the sheets by alternately applying +-charges. Corrugated electrode.
[0026]
In addition, there is a certain amount of heat radiation from each of the electrodes 14 and 15 due to such dust collecting action, and water vapor contained in the air together with dust and dust evaporates when passing through the electric dust collector 13A.
[0027]
As shown in FIG. 1 again, a handle portion a is integrally provided on the lower side of the electrostatic precipitator 13A, and can be freely detached from the unit body 1 by opening the front panel 2 serving as a suction grill on the user side. In particular, it is possible to perform maintenance for removing dust / dust attached to the dust collecting electrode 15.
[0028]
Further, a filter 16 is detachably attached to a space surrounded by the handle portion a of the electrostatic precipitator 13A, the lower front surface of the front heat exchanger portion 5a and the front panel 2, and the attached dust / Maintenance to remove dust can be performed.
[0029]
On the other hand, a negative ion generator 17 which is a negative ion generator is disposed in the air passage 8. If it demonstrates, this negative ion generator 17 will be attached to the lower surface part of the front drain pan 6a of the said ventilation path 8 through which the air which passed the electrostatic precipitator 13A passes.
[0030]
As shown in FIG. 3, a part of the negative ion generator 17 can be seen from one side of the outlet 9 through the wind direction guide 10 in a state where the unit body 1 is looked up from the lower side of the outlet 9. Further, a control device which is a control means to be described later and an electrical component box 18 that houses various electrical components are attached to the side portion of the unit main body 1.
[0031]
As shown in FIG. 2 (A) again, the basic configuration of the negative ion generator 17 includes an electrode plate 20 to which a high voltage circuit connection terminal is connected and to which a high voltage is applied, and a protrusion integrally formed on the side surface of the electrode plate 20. It consists of a negative ion generating electrode 22 that is formed by a needle-like electrode 21 that emits negative ions from the tip, and a protective container 23 (indicated by a one-dot chain line) that houses and protects the generating electrode 22.
[0032]
The negative ion generator 17, the electrostatic precipitator 13 </ b> A described above, the compressor (not shown) that performs the heat exchange action of the indoor heat exchanger 5, and the indoor blower 7 are all electrically connected to the control device 30. Thus, control as will be described later is performed.
[0033]
Further, in order to radiate a larger amount of negative ions in the negative ion generator 17, it is necessary to increase the potential difference between the tip of the needle electrode 21 and the periphery of the tip. Therefore, a ground terminal 24 is attached to the vicinity of the tip of the needle electrode 21 of the protective container 23, and the protective container 23 is grounded via the ground wire 25 to ensure a potential difference from the tip of the needle electrode 21.
[0034]
For example, if the negative ion generator 17 is disposed in the very vicinity of the indoor blower 7 described above, the released negative ions are absorbed by the nose or casing forming the blower passage 8 and released into the indoor space. The amount is greatly reduced. Therefore, the generator 17 is disposed in the vicinity of the outlet 9 and radiates through the vertical and horizontal louvers of the wind direction guide unit 10.
[0035]
Further, the needle-like electrode 21 protruding from the electrode plate 20 is disposed with the tip thereof directed from the upstream side to the downstream side of the air passage 8, and the ground terminal 24 is attached to the downstream side of the needle-like electrode 21.
[0036]
For example, as shown in FIG. 2 (B), when the tip of the needle electrode 21 is reversed and the ground terminal 24 is mounted on the upstream side of the air flow so as to face this, negative ions emitted from the tip of the needle electrode 21 Is almost absorbed by the electrode plate 20 due to the air flow, and the amount released to the indoor space is reduced, so this configuration is not adopted.
[0037]
When the operation start button of a remote controller (not shown) is pressed, the control device 30 controls the refrigeration cycle operation for the indoor heat exchanger 5 and the operation control of the indoor fan 7. Eggplant.
[0038]
The room air is sucked into the unit body 1 from the front panel (suction grill) 2 of the unit body 1 and the suction ports 12 a, 12 b, 11 of the top panel 3. In particular, the room air sucked from the front suction port 12a directly passes through the electrostatic precipitator 13A, and dust, dust, and water vapor contained in the room air are captured and cleaned.
[0039]
The purified air is guided to the indoor heat exchanger 5 to exchange heat, and is further guided to the air passage 8 through the indoor fan 7 and blown out from the outlet 9 into the indoor space. Negative ions are emitted from the negative ion generator 17 in the vicinity of the outlet 9 and supplied to the indoor space.
[0040]
Since the heat-exchanged clean air blown out from the outlet 9 does not contain any dust, dust, or water vapor that attenuates negative ions, the negative ions emitted from the generator 17 are not attenuated and enter the room as they are. Supplied.
[0041]
In this way, the indoor air circulates through the above path, and is guided to the electric dust collector 13A, the indoor heat exchanger 5, and the negative ion generator 17 in the indoor unit, thereby purifying the air and desired air conditioning. Both negative ions that have a positive effect on the human body can be supplied efficiently.
[0042]
In addition, the air cleaner 13 disposed on the air suction side of the indoor heat exchanger 5 includes an electric dust collector 13A including a positive potential charging electrode 14 and a negative potential dust collecting electrode 15, and this downstream side. The negative ion generator 17 was disposed in the air flow path 8.
[0043]
Accordingly, the dust / dust in the air passing through the electric dust collector 13A is positively charged by the charging electrode 14, and is reliably adsorbed and neutralized by the negatively charged dust collecting electrode 15, and is passed through the outlet 9 to the room. Is released.
[0044]
At this time, even if a small amount of positively charged air remains as active oxygen, it is neutralized by some of the negative ions emitted from the negative ion generator 17 on the downstream side of the air flow, and thus is high by the electric dust collector 13A. A synergistic effect is obtained in which an air cleaning effect and efficient negative ion generation are performed.
[0045]
Further, the control device 30 controls the air purifying action by the air cleaner 13 (that is, the dust collecting action by the electric dust collector 13A) and the negative ion generating action by the negative ion generator 17 to be performed in conjunction with each other. .
[0046]
Negative ions are easily absorbed by dust, dust, and water vapor, and are greatly affected by their presence. However, during operation of the negative ion generator 17, the air cleaner 13 is always operated simultaneously to remove impurities in the air. As a result, the efficiency of negative ion generation can be improved.
[0047]
Further, the control device 30 controls the heat exchange action by the indoor heat exchanger 5, the air purification action by the air cleaner 13, and the negative ion generation action by the negative ion generator 17 to be interlocked.
[0048]
It is known that the amount of negative ions generated is greatly influenced by the presence of dust, dust and water vapor, and that the amount of negative ions generated increases as the air humidity decreases. Therefore, by simultaneously performing the air-conditioning operation to reduce the humidity in the air, further improvement in the negative ion generation efficiency can be obtained.
[0049]
The control device 30 controls to stop the operation of the electrostatic precipitator 13A and the negative ion generator 17 when an abnormality of the electrostatic precipitator 13A that is the air cleaner 13 is detected.
[0050]
Since the amount of negative ions generated is greatly affected by the presence of dust, dust, and water vapor, if the electrostatic precipitator 13A fails, the amount of negative ions generated in the negative ion generator 17 is extremely reduced, resulting in useless operation. . Therefore, when the abnormality of the electrostatic precipitator 13A is detected and stopped, the negative ion generator 17 is also stopped in conjunction to prevent the inefficient operation from continuing.
[0051]
Further, when the front panel (suction grill) 2 of the unit body 1 is opened during maintenance or the like, the control device 30 controls to forcibly stop the operation of the electrostatic precipitator 13A and the negative ion generator 17 immediately.
[0052]
That is, when the front panel 2 is opened, the electric dust collector 13A is exposed. Since a high-voltage power supply is sent here, it is necessary to cut off the power supply for safety. On the other hand, the high-voltage power source is also sent to the negative ion generator 17, but it is arranged in the air blowing path 8 and has nothing to do with opening and closing of the front panel 2. Therefore, although there is no danger of contact with the negative ion generator 17, the energization is interrupted with the energization stop of the electrostatic precipitator 13A, and the inefficient operation continuation is prevented.
[0053]
【The invention's effect】
As described above, according to the present invention, both the air purifying means and the negative ion generating means are provided, and the arrangement position of these means is limited, so that the effect of efficient air cleaning and negative ion supply can be achieved. Play.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention.
FIGS. 2A and 2B are diagrams illustrating components housed in an indoor unit of an air conditioner according to the embodiment, a diagram illustrating the operation thereof, and a diagram illustrating a configuration not employed.
FIG. 3 is a partial perspective view of the indoor unit of the air conditioner according to the embodiment.
[Explanation of symbols]
1 ... Unit body,
5 ... Indoor heat exchanger,
7 ... indoor fan,
13 ... Air purifier,
17 ... Negative ion generator,
13A ... Electric dust collector,
14 ... charged electrode,
15 ... dust collecting electrode,
30 ... Control device,
2 ... Front panel (suction grill).

Claims (1)

In the indoor unit of an air conditioner that houses a heat exchanger and a blower in the unit body, sucks indoor air into the unit body, exchanges heat with the heat exchanger, and blows out indoors through the blower,
Comprising an electric dust collector that will be placed on the air intake side of the heat exchanger, and air cleaning means for cleaning to remove impurities such as dust, dust, water vapor from the room air drawn into the unit body,
It is arranged in the blowing air passage of the blower through which the purified air after passing through the electric dust collector passes , emits negative ions along the blowing air passage, and supplies the negative ions together with the purified air into the room. Negative ion generating means;
The heat exchanger, the electric dust collector, and a control means for controlling the negative ion generation means,
The above electric dust collector
A positive charge electrode that ionizes dust and dust by applying a high DC voltage between the discharge electrode composed of ionized wires and the counter electrode to cause corona discharge;
A corrugated electrode that is disposed on the downstream side of the air flow of the charging electrode and laminates a sheet having a conductive electrode on one side with a gap, and a negative potential dust collecting electrode that attracts ionized dust Configured,
The negative ion generating means is
A negative ion generating electrode composed of an electrode plate to which a high voltage is applied and a needle-like electrode projecting integrally on the side surface of the electrode plate and emitting negative ions from the tip;
A protective container that houses and protects the negative ion generating electrode;
An earth terminal for connecting the protective container to take a large potential difference with the needle electrode,
The needle-like electrode protruding from the electrode plate is arranged with the tip from the air blowing upstream side toward the air blowing downstream side, and the ground terminal is attached to the air blowing downstream side of the needle-like electrode,
The control means includes
An air conditioner characterized by controlling the heat exchange action by the heat exchanger, the air purification action by the air cleaning means, and the negative ion generation action by the negative ion generation means in conjunction with each other. Indoor unit.

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