WO2018163574A1

WO2018163574A1 - Air conditioner

Info

Publication number: WO2018163574A1
Application number: PCT/JP2017/046584
Authority: WO
Inventors: 酒井　浩一; 岡　浩二
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2017-03-06
Filing date: 2017-12-26
Publication date: 2018-09-13
Also published as: JPWO2018163574A1; CN109964041A

Abstract

This air conditioner comprises: a suction opening; a fan for sucking air from the suction opening; a heat exchanger for exchanging heat with the air having been sucked from the suction opening; a discharge opening for discharging air having been subjected to heat exchange with the heat exchanger; and a rear guider and a stabilizer, which are arranged downstream of the fan and which form an air flow passage for conducting air to the discharge opening. The stabilizer and/or the rear guider is provided with a movable section. A control device performs control on the basis of the rotational speed of the fan so that the movable section is movable.

Description

Air conditioner

The present invention relates to an indoor ventilation path of an air conditioner.

In an indoor unit of a conventional air conditioner, the lower part of the outlet is configured by a diffuser that is pivotally supported by a support shaft. An opening / closing plate that expands the front portion of the air outlet upward and that can be freely opened and closed between the expanding portion and the air passage is pivotally supported by the support shaft portion. In addition, a wind guide plate is pivotally supported by the support shaft portion at the front end of the expanding portion (see, for example, Patent Document 1).

JP 2000-146276 A

However, in the above-described conventional configuration, the movable diffuser simply expands / reduces the outlet and operates upward / downward, and does not correspond to increase / decrease in fan rotation speed, that is, increase / decrease in air flow. For this reason, it had the problem that ventilation performance fell.

The present invention solves the above-described conventional problems, and operates a movable portion provided in a stabilizer and a rear guider that form an indoor ventilation path in accordance with a change in the rotational speed of the fan, that is, a change in the air volume. Therefore, it aims at providing the air conditioner which improved energy efficiency.

In order to achieve the above object, an air conditioner of the present invention exchanges heat with a suction port, a fan that sucks air from the suction port, a motor that drives the fan, and air that is sucked from the suction port. A heat exchanger, a blow-out port from which the air heat-exchanged by the heat exchanger is blown, a rear guider and a stabilizer that are arranged on the downstream side of the fan and that form a ventilation path that guides air to the blow-out port; And a control device. At least one of the stabilizer and the rear guider is provided with a movable portion. The control device controls the movable portion to move based on the rotation speed of the fan.

This allows the movable part provided in at least one of the stabilizer and the rear guider to move based on the rotational speed of the fan. Therefore, the motor input can be reduced regardless of the change in the air volume obtained from the fan speed. For this reason, energy saving can be realized.

According to the present invention, the energy efficiency is improved by operating the movable part provided in the stabilizer or the rear guider that forms the indoor ventilation path in accordance with the change in the rotation speed of the fan, that is, the change in the air volume. Air conditioner can be provided.

The figure which shows the outline | summary of the longitudinal cross-section at the time of the fan stop of the indoor unit of the air conditioner in Embodiment 1 of this invention The figure which shows the outline | summary of the longitudinal cross-section at the time of rotation of the indoor unit of the same air conditioner (fan rotation speed: NL) The figure which shows the outline | summary of the longitudinal cross-section at the time of rotation of the indoor unit of the same air conditioner (fan rotation speed: NM) The figure which shows the outline of the longitudinal section at the time of rotation of the indoor unit of the same air conditioner (fan rotation speed: NH) The figure which shows the outline | summary of the longitudinal cross-section of the movable stabilizer of the indoor unit of the same air conditioner, and a movable rear guider

An air conditioner according to a first aspect of the present invention includes a suction port, a fan that sucks air from the suction port, a motor that drives the fan, a heat exchanger that exchanges heat with the air sucked from the suction port, A blowout port through which the air heat-exchanged by the heat exchanger is blown out, a rear guider and a stabilizer that are arranged downstream of the fan and that form a ventilation path that guides the air to the blowout port, and a control device; It is equipped with. At least one of the stabilizer and the rear guider is provided with a movable portion. The control device controls the movable portion to move based on the rotation speed of the fan.

This allows the movable part provided in at least one of the stabilizer and the rear guider to move based on the rotational speed of the fan. Therefore, the motor input can be reduced regardless of the change in the air volume obtained from the fan rotation speed, so that energy saving can be realized. In addition, regardless of changes in the fan speed, turbulence can be reduced and noise can be reduced by smoothing the air flow. Further, by increasing the static pressure to stabilize the flow field, it is possible to prevent the intermittent abnormal sound “basabasa” and the dew condensation / drip due to the backflow.

According to a second aspect of the invention, in particular, in the first aspect of the invention, when the air volume of the air blown from the air outlet is Q and the input to the motor is W, the control device is configured to maximize Q / W. In addition, the movable operation of the movable part is controlled. Here, “maximum” includes “substantially maximum”.

This allows the air volume obtained from the fan speed to be generated with maximum energy efficiency, so that the motor input can also be minimized (including almost the minimum). Thereby, energy saving can be realized effectively.

In a third aspect of the invention, particularly in the first or second aspect of the invention, the movable stabilizer, which is the movable part provided in the stabilizer, has a larger outlet when the rotational speed of the fan is larger than when the rotational speed is small. It moves so that the above-mentioned ventilation path to may expand.

This allows the movable stabilizer to reduce the motor input corresponding to the amount of air flow obtained from the fan rotation speed, thus realizing energy saving.

In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the movable rear guider that is the movable portion provided in the rear guider is larger when the rotational speed of the fan is smaller, It moves so that the said ventilation path to the said blower outlet may expand.

This allows the movable rear guider to reduce the motor input corresponding to the amount of air flow obtained from the fan speed, thus realizing energy saving.

In a fifth aspect of the invention, particularly in the third aspect of the invention, the movable stabilizer is configured such that one end on the upstream side of the ventilation path is rotatably supported and the other end on the downstream side of the ventilation path is movable. .

This makes it possible to realize a configuration in which the movable stabilizer is movable so that the ventilation path to the air outlet is enlarged when the rotational speed of the fan is larger than when the rotational speed of the fan is small.

According to a sixth aspect of the present invention, particularly in the fourth aspect of the invention, the movable rear guider is configured such that one end on the upstream side of the ventilation path is rotatably supported and the other end on the downstream side of the ventilation path is movable. .

This makes it possible to realize a configuration in which the movable rear guider is movable so that the ventilation path to the air outlet is enlarged when the rotational speed of the fan is larger than when the rotational speed of the fan is small.

In a seventh aspect of the invention, particularly in any one of the first to fourth aspects of the invention, the movable angle of the movable part is preset in the control device based on the rotational speed of the fan. Thereby, the air conditioner which realized cheap and energy saving can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The air conditioner of Embodiment 1 of the present invention is a so-called separate type air conditioner in which an indoor unit and an outdoor unit are connected to each other by a refrigerant pipe, a control wiring, and the like. The indoor unit and the outdoor unit constitute a heat pump, and the outdoor unit is provided with a compressor. The indoor unit in the air conditioner of the present embodiment is a wall-mounted indoor unit that is attached to an indoor wall surface.

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit operation stop in the air conditioner of the first embodiment. FIG. 2 is a longitudinal sectional view showing a schematic configuration in a state where the fan rotation speed is low (fan rotation speed = NL) during air-conditioning operation in the air conditioner. FIG. 3 is a longitudinal sectional view showing a schematic configuration in an intermediate state (fan rotation speed = NM) of the fan rotation speed (NM) during the air conditioning operation in the air conditioner. FIG. 4 is a longitudinal sectional view showing a schematic configuration in a state where the fan rotation speed is high (fan rotation speed = NH) during air-conditioning operation in the air conditioner. The relationship between the fan rotation speeds is NH> NM> NL.

As shown in FIGS. 1 to 4, the indoor unit 1 includes a main body 2 having a front opening 2a that serves as an air inlet, an upper surface opening 2b, and a blowout port 2c that blows out heat-exchanged air, and A front panel 3 is provided.

Inside the main body 2, a filter 4 for removing dust contained in room air, a heat exchanger 5 for exchanging heat of the taken room air, and the front opening 2 a and the upper surface opening 2 b are taken in through the filter 4. The fan 6 that is a cross-flow fan that generates airflow for exchanging the indoor air with the heat exchanger 5 and blowing it out of the air outlet 2c into the room, a motor (not shown) that drives the fan 6, and these configurations A control device (not shown) for controlling the operation of the component is provided.

In the main body 2 of the indoor unit 1, a ventilation path 10 extending from the downstream side of the fan 6 to the upstream side of the air outlet 2 c is disposed on the downstream side of the fan 6, and a rear guider 7 that guides the flow of air, and the rear guider 7. Is formed by a stabilizer 11 disposed opposite to the main body 2 and both side walls (not shown) of the main body 2.

In the air outlet 2c for blowing out the heat exchanged air in the air conditioner of the first embodiment, the air outlet 2c can be opened and closed and the air blowing direction can be changed in the vertical direction. A vertical airflow direction changing blade 8 as means is provided.

Left and right wind direction changing blades 9 which are left and right wind direction changing means capable of changing the blowing direction of air around the air outlet 2c or around the up and down air direction changing blades 8 are provided. Furthermore, a movable rear guider 7a and a movable stabilizer 11a, which are movable parts that perform a rotating operation, are provided on a part of the blowout side of the rear guider 7 and the stabilizer 11, respectively. The movable rear guider 7a and the movable stabilizer 11a are respectively movable corresponding to the number of fan rotations. In the control device, the rotation angles of the movable rear guider 7a and the movable stabilizer 11a are set in advance corresponding to the number of rotations of the fan 6. Then, the control device moves the movable rear guider 7a and the movable stabilizer 11a so as to have a preset rotation angle with respect to the driving rotation number of the fan 6. Specifically, the rotation angle of the movable portion is set in advance corresponding to each rotation number of the fan 6 so that the rotation angle of the movable rear guider 7a and the movable stabilizer 11a increases as the rotation number of the fan 6 decreases. Has been.

As shown in FIG. 2, when the fan rotation speed is low during operation, the movable rear guider 7a and the movable stabilizer 11a move so as to reduce the ventilation path 10. As shown in FIG. 3, when the fan rotation speed is intermediate during operation, the movable rear guider 7a and the movable stabilizer 11a move so as to slightly reduce the ventilation path 10. As shown in FIG. 4, when the number of fan rotations is high during operation, the movable rear guider 7a and the movable stabilizer 11a are not moved and are arranged along the rear guider 7 and the stabilizer 11. In this manner, the movable stabilizer 11a and the movable rear guider 7a are moved in accordance with the number of fan rotations, and the optimum ventilation path 10 is formed to improve the performance.

Also, when the air volume is small and dust / dust accumulates on the filter 4, there is a tendency that intermittent abnormal noise called “basabasa” is generated. At that time, the movable rear guider 7a and the movable stabilizer 11a reduce the ventilation path 10 to improve the static pressure, thereby forming a stable flow field. Thereby, generation | occurrence | production of an intermittent abnormal sound can be prevented.

Also, when the air volume is small and dust / dust accumulates on the filter 4, it may flow backward from the blowing part and cause dew condensation / dropping. Similarly, the movable rear guider 7a and the movable stabilizer 11a reduce the ventilation path 10 to improve the static pressure, form a stable flow field, suppress the back flow, and prevent dew and dripping.

As shown in FIGS. 2 to 4, the movable rear guider 7a and the movable stabilizer 11a are movablely controlled so that the fan efficiency defined by the following equation is maximized at each fan rotation speed: NL, NM, NH. Has been.

The magnitude relationship between the fan rotation speeds is NL <NM <NH. dP is the pressure loss (pressure loss of the air passage from the inlet to the outlet), Q is the air volume from the inlet, n is the fan speed (NL, NM, NH), T is the torque (supplied from the motor to the fan) The fan efficiency η can be defined as η = (dP * Q) / (n * T) ≈Q / W. The rotational angle of the movable rear guider 7a and the movable stabilizer 11a is set in advance so as to correspond to each rotational speed of the fan 6 as the rotational speed of the fan 6 decreases. The rotational angle of the movable rear guider 7a and the movable stabilizer 11a that maximizes the fan efficiency η is set in advance for the rotational speed.

Thus, since the movable rear guider 7a and the movable stabilizer 11a are movable so that the fan efficiency η is maximized at each fan speed, NL, NM, and NH, the motor input can be reduced, resulting in energy saving. Can be planned.

Here, since the pressure loss dP and the torque T are difficult to measure, the air volume Q and the motor input W can be simply measured and evaluated by η≈Q / W. In this case, the fan efficiency η is substantially maximum.

Also, when the rotational speed is low and dust / dust accumulates on the filter 4, there is a tendency that intermittent abnormal noise “basabasa” is generated. At that time, the ventilation path 10 is reduced by the movable rear guider 7a and the movable stabilizer 11a to improve the static pressure and form a stable flow field. Thereby, generation | occurrence | production of an intermittent abnormal sound can be prevented.

Also, the rotation speed is low, and when dust or dirt accumulates on the filter 4, it may flow backward from the blowing part and cause dew condensation or dripping. Similarly, the ventilation path 10 is reduced by the movable rear guider 7a and the movable stabilizer 11a to improve the static pressure and form a stable flow field, thereby suppressing the backflow and preventing dew and dripping.

Next, the operation of the movable stabilizer 11a will be described with reference to FIGS. When the fan rotation speed is large (n = NH), the movable stabilizer 11a is movable upward to expand the ventilation path 10 as shown in FIG. As shown in FIG. 2, the movable stabilizer 11a moves downward to reduce the ventilation path 10 when the fan rotation speed is small (n = NL). When the fan rotational speed is intermediate (n = NM, NL <NM <NH), the movable stabilizer 11a is movable between FIG. 2 and FIG. 4 to form the ventilation path 10 as shown in FIG. . Since the movable stabilizer 11a is moved so that the fan efficiency becomes optimum at each fan rotation speed, NL, NM, and NH, the input can be reduced and energy saving can be achieved.

Also, when the rotational speed is low and dust / dust accumulates on the filter 4, there is a tendency for intermittent abnormal noise “basabasa” to occur, and there is a tendency to cause dew / drop by flowing backward from the blowing part. The movable stabilizer 11a reduces the ventilation path 10 to improve the static pressure and form a stable flow field. Thereby, generation | occurrence | production of an intermittent abnormal sound is prevented, and a backflow is suppressed simultaneously and dew condensation and dripping are prevented.

Next, the operation of the movable rear guider 7a will be described with reference to FIGS. The movable rear guider 7a moves downward to expand the ventilation path 10 as shown in FIG. 4 when the fan rotation speed is large (n = NH). As shown in FIG. 2, the movable rear guider 7a moves upward to reduce the ventilation path when the fan rotation speed is small (n = NL). When the fan rotational speed is intermediate (n = NM, NL <NM <NH), the movable rear guider 7a is movable so as to be between FIG. 2 and FIG. Let it form. Since the movable rear guider 7a is movable so that the fan efficiency becomes optimum at each fan speed, NL, NM, and NH, the input can be reduced and energy saving can be achieved.

Also, when the rotational speed is low and dust / dust accumulates on the filter 4, there is a tendency for intermittent abnormal noises called “basabasa” to occur, and there is a tendency for backflow from the blowout part to cause dew condensation / dropping. The movable stabilizer 11a reduces the ventilation path 10 to improve the static pressure and form a stable flow field. Thereby, generation | occurrence | production of an intermittent abnormal sound is prevented, and a backflow is suppressed simultaneously and dew condensation and dripping are prevented.

Next, a configuration in which the movable stabilizer 11a can reduce the ventilation path 10 will be described with reference to FIG. That is, in the movable stabilizer 11a, the rotation support 11c, which is one end of the upstream portion, is connected to the rotation shaft of a motor (not shown). Thereby, the rotation support 11c, which is one end of the upstream portion, is rotatably supported, and one end of the downstream portion is movable upward and downward so as to expand and contract the air passage. FIG. 5 shows a situation where the ventilation path 10 is moved so as to be reduced, but it is also possible to move in the direction of enlargement.

Next, a configuration in which the movable rear guider 7a can reduce the ventilation path 10 will be described with reference to FIG. That is, in the movable rear guider 7a, the rotation support 7c, which is one end of the upstream portion, is connected to a rotation shaft of a motor (not shown). Thereby, the rotation support 7c, which is one end of the upstream portion, is rotatably supported, and the one end of the downstream portion is movable upward and downward so as to expand and contract the air passage. FIG. 5 shows a situation where the ventilation path 10 is moved so as to be reduced, but it is also possible to move in the direction of enlargement.

As described above, the air conditioner according to the first embodiment saves energy by maximizing the fan efficiency η and reducing the input at each fan rotation speed that is variable during the cooling / heating operation. That is, at least one of the movable stabilizer 11a and the movable rear guider 7a is moved in accordance with the rotation speed of each fan, and the optimum ventilation path 10 is formed to improve the performance.

As described above, in the air conditioner according to the present invention, the movable part provided in at least one of the stabilizer and the rear guider that forms the indoor ventilation path is made to respond to a change in the rotational speed of the fan, that is, a change in the air volume. Make it work. Thereby, since energy efficiency can be improved, the air conditioner concerning this invention is useful for the air conditioner used for business use, a general household, etc.

1 Indoor unit (housing)
2 Body 2a Front opening (suction port)
2b Upper surface opening (suction port)
2c Air outlet 3 Front panel 4 Filter 5 Heat exchanger 6 Fan 7 Rear guider 7a Movable rear guider 7c Rotation support (rear guider side)
8 Vertical wind direction change blade 9 Left and right wind direction change blade 10 Ventilation path 11 Stabilizer 11a Movable stabilizer 11c Rotation support (Stabilizer side)

Claims

A suction port, a fan for sucking air from the suction port, a motor for driving the fan, a heat exchanger for exchanging heat with the air sucked from the suction port, and the heat exchanged by the heat exchanger An air outlet from which air is blown out, a rear guider that is disposed on the downstream side of the fan and forms a ventilation path that guides the air to the air outlet, a stabilizer, and a control device,
At least one of the stabilizer and the rear guider is provided with a movable part,
The said control apparatus is an air conditioner which controls so that the said movable part may move based on the rotation speed of the said fan.
The control device controls the movable operation of the movable portion so that Q / W is maximized when Q is an air volume of air blown from the air outlet and W is an input to the motor. Item 2. An air conditioner according to Item 1.
The movable stabilizer, which is the movable part provided in the stabilizer, is movable so that the ventilation path to the outlet is enlarged when the rotational speed of the fan is larger than when the rotational speed is small. Or the air conditioner of 2.
The movable rear guider, which is the movable part provided in the rear guider, is movable so that the ventilation path to the air outlet is enlarged when the rotational speed of the fan is larger than when it is small. 4. The air conditioner according to any one of items 1 to 3.
The air conditioner according to claim 3, wherein the movable stabilizer is configured such that one end on the upstream side of the ventilation path is rotatably supported and the other end on the downstream side of the ventilation path is movable.
The air conditioner according to claim 4, wherein the movable rear guider is configured such that one end on the upstream side of the ventilation path is rotatably supported and the other end on the downstream side of the ventilation path is movable.
The air conditioner according to any one of claims 1 to 6, wherein a movable angle of the movable portion is preset in the control device based on a rotation speed of the fan.