JP2005024154A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP2005024154A
JP2005024154A JP2003189347A JP2003189347A JP2005024154A JP 2005024154 A JP2005024154 A JP 2005024154A JP 2003189347 A JP2003189347 A JP 2003189347A JP 2003189347 A JP2003189347 A JP 2003189347A JP 2005024154 A JP2005024154 A JP 2005024154A
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JP
Japan
Prior art keywords
indoor
temperature
air conditioner
blower
indoor fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003189347A
Other languages
Japanese (ja)
Inventor
Akihiro Tanaka
章博 田中
Takayuki Izeki
貴之 井関
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003189347A priority Critical patent/JP2005024154A/en
Publication of JP2005024154A publication Critical patent/JP2005024154A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of maintaining the comfort of a user by minimizing the operation of an indoor blower in a condensed water present state as in a thermo-off state in cooling operation to minimizing the occurrence of odor. <P>SOLUTION: This air conditioner comprises at least the indoor blower and an indoor temperature detection means. The air conditioner also comprises a means for varying the intermittent operation time of the indoor blower based on an indoor temperature difference by detecting indoor temperatures by intermittently operating the indoor blower in a state that the compressor is stopped in the cooling operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、空気調和機に関するものであり、詳しくは室内送風機の運転制御に関するものである。
【0002】
【従来の技術】
従来の空気調和機の冷房運転時では運転経過と共にタバコ等の生活臭が室内熱交換器に付着し、例えば冷房運転時のように水分が発生することにより臭いを発生させる原因となっていた。このような臭いの発生を抑えるため、冷房運転時室内送風機を制御することにより、室内熱交換器のフィン表面のぬれはじめのように室内熱交換器に付着した生活臭が発生しやすい時には、圧縮機の運転開始から所定時間室内送風機を停止し、フィン表面に結露水を発生させて臭い成分を流し出すようにして臭気発生を抑えていた。
【0003】
また、冷房運転時、圧縮機停止から所定時間経過後にも室内送風機を停止することにより室内熱交換器のフィン表面の乾きはじめに熱交換器に付着した生活臭が発生しやすい時に室内送風機を停止するため、臭気発生を抑えていた。
【0004】
また、冷房運転時、圧縮機停止から予め設定されている所定時間経過後に一定時間室内送風機を運転することにより、いわゆるサーモオフ状態であって室内送風機が停止されている状態でも室内温度のサンプリングを行うようにしていた。
【0005】
また、冷房運転時、室内送風機運転開始から所定時間、および圧縮機停止から室内送風機を停止するまでの所定時間は室内送風機を微弱風量にて運転し室内送風音の変化を和らげ、かつ極力臭気が発生しないように水分の蒸発量を抑えるようにしていた(例えば、特許文献1参照)。
【0006】
【特許文献1】
特開平6−147619号公報
【0007】
【発明が解決しようとする課題】
しかしながら、上記従来の構成でも臭気の発生をある程度抑制するという効果は期待できるものの、冷房運転時のサーもオフ状態の場合などのように熱交換器に水分が付着しており、かつ、サーモオフ状態からの復帰のために室内温度をサンプリングすべく室内送風機を運転しなければならない場合において、サンプリングは所定時間間隔ごとに定期的に実施されているため、このように室内送風機が運転されているときには、熱交換器などから臭気が発生してしまい、条件によってはユーザーにこの臭いによって不快感を与えかねないという課題を有していた。
【0008】
本発明はこのような従来の課題に鑑みてなされたものであり、冷房運転時のサーモオフ状態のように結露水が存在する状態では極力室内送風機の運転を減少させて、臭気の発生を極力抑制するようにしてユーザーの快適性を維持することが可能な空気調和機を提供することを目的とする。
【0009】
【課題を解決するための手段】
上記課題を解決するために本発明は、少なくとも室内送風機と、室内温度検知手段とを有して構成される空気調和機であって、冷房運転時であって圧縮機が停止している状態において、前期室内送風機を間欠運転させて室内温度を検知し、室内温度差に基づいて前期室内送風機の間欠運転時間を変化させる手段を備えたものである。
【0010】
また、少なくとも室内送風機と、室内温度検知手段とを有して構成される空気調和機であって、冷房運転時であって圧縮機が停止している状態において、前期室内送風機を間欠運転させて室内温度を検知し、室内温度と設定温度の差に基づいて前期室内送風機の間欠運転時間を変化させる手段を備えたものである。
【0011】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。
【0012】
(実施の形態1)
図1は本発明の空気調和機の冷凍サイクル図であり、冷凍サイクルは圧縮機1、室外熱交換器2、膨張弁3、室内熱交換器4を少なくとも順次連結することにより構成される。5は室内送風機、6は室外送風機、7は室内吸込み温センサーである。以上のような構成において、以下その動作について説明する。
【0013】
冷房運転時に圧縮機1が停止すると、室内送風機5が所定時間(t1:例えば15秒)駆動し、その間、室内吸込み温センサー7にて室内温度を検知し、室内温度が所定温度(ta)以下であれば、室内送風機5が所定時間(t2:例えば100秒)停止したのち、所定時間(t1)を0秒とし、1度省略する。図8は従来の冷房運転時で圧縮機1が停止している場合の室内送風機運転停止のタイミング表、図9は従来の室内送風機5の動作を表すフローチャートであり、室内温度に関係なく一定のタイミングで間欠動作を繰り返していることが分かる。図2は本発明の実施形態1における室内送風機運転停止のタイミングを表したものである。図3は本発明の実施形態1における所定時間(t1)省略ゾーンを表したグラフであり。図4は本発明の実施形態1における一連の室内送風機5の動作を表すフローチャートである。本発明では図2、図3、図4を見て分かるように、室内温度が所定温度(ta)以下になると所定時間(t1)を0秒にして1度省略することで室内送風機運転時間を減少することを可能にし室内送風機運転によって発生する臭気を抑制する効果がある。本発明は室内送風機運転時間を減少させることにより室内温度検出の精度は減少するが所定温度以下であれば、室内温度が充分冷えていると考えられるため、仮に所定時間(t2)経過後に設定温度以上に室内温度が上昇していたとしても、不快感はないと思われる。
【0014】
(実施の形態2)
次に本発明の第二の実施例を説明する。冷房運転時に圧縮機1が停止すると、室内送風機5が所定時間(t1:例えば15秒)駆動し、その間室内吸込み温センサー7にて検出された室内温度が設定温度に対して、設定値1(ts1 例えば:5K)以上低ければ、室内送風機5が所定時間(t2:例えば100秒)停止したのち、所定時間(t1)を0秒とし、2度省略する。さらに、検出された室内温度が設定温度に対して、設定値2(ts2 例えば:2K)以上低く、かつ、設定値1(ts1)以下であれば所定時間(t2)経過後の所定時間(t1)を0秒とし、1度省略する。図8は従来の冷房運転時で圧縮機1が停止している場合の室内送風機運転停止のタイミング表、図9は従来の室内送風機5の動作を表すフローチャートであり、室内温度に関係なく一定のタイミングで間欠動作を繰り返していることが分かる。図5は本発明の実施形態2における室内送風機運転停止のタイミングを表したものである。図6は本発明の実施形態2における所定時間(t1)省略ゾーンを表したグラフである。図7は本発明の実施形態2における一連の室内送風機5の動作を表すフローチャートである。本発明では図5、図6、図7を見て分かるように、室内温度と設定温度の差により所定時間(t1)を0秒として省略することで室内送風機運転時間を減少することを可能にし室内送風機運転によって発生する臭気を抑制する効果がある。本発明は室内送風機運転時間を減らすことにより室内温度検出の精度は減少するが室内温度と、設定温度との差に基づいて室内送風機運転時間を調整することにより、温度差が近接する時は室内温度が設定温度に近づきやすいと考えられるために室内送風機運転時間を減らさず、温度差が充分ある時は室内送風機運転時間を減らしてもただちに吸込み設定温度に近づくことか無いと考えられるために正確な室内温度を検出つつ室内送風機運転時間を減らすことが可能である。
【0015】
【発明の効果】
以上のように、本発明は、冷房運転時で圧縮機が停止すると所定時間(t1)中に室内温度を検出し、検出された室内温度が所定温度以下であれば、所定時間(t2)経過後の所定時間(t1)を1度省略するもので、この構成によれば、室内送風機運転時間を減らすことが可能になり、室内送風機運転により発生する臭気を抑制する効果がある。本発明は室内送風機運転時間を減らすことにより室内温度検出の精度は減少するが所定温度以下であれば、室内温度が充分冷えていると考えられ、仮に所定時間(t2)経過後に設定温度以上に室内温度が上昇していたとしても、不快感はないと考えられる。
【0016】
また本発明は、冷房運転時で圧縮機が停止すると所定時間(t1)中に室内温度を検出し、検出された室内温度が吸込み設定温度に対して、設定値1(ts1)以上低ければ、所定時間(t2)経過後の所定時間(t1)を2度省略する。さらに、検出された室内温度が吸込み設定温度に対して、設定値2(ts2)以上低くかつ、設定値1(ts1)以下であれば所定時間(t2)経過後の所定時間(t1)を1度省略する。この構成によれば、室内送風機運転時間を減らすことが可能になり、室内送風機運転により発生する臭気を抑制する効果がある。本発明は室内送風機運転時間を減らすことにより室内温度検出の精度は減少するが室内温度と、設定温度との差に基づいて室内送風機の運転時間を調整することにより、温度差が近接する時は室内温度が設定温度に近づきやすいと考えられるために室内送風機運転時間を減らさず、温度差が充分ある時は室内送風機運転時間を減らしてもただちに設定温度に近づくことが無いと考えられるために正確な室内温度を検出つつ、室内送風機運転時間を減らすことが可能である。
【図面の簡単な説明】
【図1】本発明の実施の形態1の空気調和機の冷凍サイクル図
【図2】本発明の実施の形態1の室内送風機運転停止のタイミング図
【図3】本発明の実施の形態1の所定時間(t1)省略ゾーンのグラフ
【図4】本発明の実施の形態1の一連の室内送風機の動作を表すフローチャート
【図5】本発明の実施の形態2の室内送風機運転停止のタイミング図
【図6】本発明の実施の形態2の所定時間(t1)省略ゾーンを表したグラフ
【図7】本発明の実施の形態2の一連の室内送風機の動作を表すフローチャート
【図8】従来の冷房運転時で圧縮機停止時の室内送風機運転停止のタイミング図
【図9】従来の室内送風機の動作を表すフローチャート
【符号の説明】
1 圧縮機
2 室外熱交換器
3 膨張弁
4 室内熱交換器
5 室内送風機
6 室外送風機
7 室内吸込み温センサー
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner, and more particularly to operation control of an indoor fan.
[0002]
[Prior art]
During the cooling operation of a conventional air conditioner, a living odor such as cigarette adheres to the indoor heat exchanger as the operation progresses, and the odor is generated by generating moisture as in the cooling operation, for example. In order to suppress the generation of such odors, it is possible to control the indoor blower during cooling operation so that when the daily odors attached to the indoor heat exchanger are likely to occur, such as when the fin surface of the indoor heat exchanger begins to get wet, compression is performed. The indoor blower was stopped for a predetermined time from the start of operation of the machine, and condensed water was generated on the fin surface to discharge odorous components, thereby suppressing odor generation.
[0003]
Also, during cooling operation, by stopping the indoor fan even after a predetermined time has passed since the compressor stopped, the indoor fan is stopped when a living odor adhering to the heat exchanger is likely to occur at the beginning of drying of the fin surface of the indoor heat exchanger Therefore, odor generation was suppressed.
[0004]
Also, during the cooling operation, the indoor air temperature is sampled even when the indoor fan is in a so-called thermo-off state by operating the indoor fan for a certain period of time after a predetermined time has elapsed since the compressor stopped. It was like that.
[0005]
Also, during the cooling operation, the indoor fan is operated with a weak air flow for a predetermined time from the start of the indoor fan operation and the predetermined time from the stop of the compressor to the stop of the indoor fan, and the change in the indoor fan sound is moderated, and the odor is minimized. The amount of water evaporation was suppressed so as not to occur (see, for example, Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 6-147619
[Problems to be solved by the invention]
However, although the effect of suppressing the generation of odor to some extent can be expected even in the conventional configuration described above, moisture is attached to the heat exchanger as in the case where the thermostat is in an off state, and the thermo-off state When the indoor blower must be operated to sample the room temperature for returning from the sampling, sampling is periodically performed at predetermined time intervals, so when the indoor blower is operated in this way However, odor is generated from a heat exchanger or the like, and depending on conditions, there is a problem that the user may feel uncomfortable due to this odor.
[0008]
The present invention has been made in view of such conventional problems, and in the state where condensed water is present as in the thermo-off state during cooling operation, the operation of the indoor blower is reduced as much as possible to suppress the generation of odor as much as possible. An object of the present invention is to provide an air conditioner that can maintain user comfort.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is an air conditioner configured to include at least an indoor fan and an indoor temperature detecting means, and in a state where the compressor is stopped during cooling operation. The first-stage indoor blower is intermittently operated to detect the room temperature, and the first-stage indoor blower is intermittently operated based on the indoor temperature difference.
[0010]
Further, the air conditioner is configured to include at least an indoor blower and an indoor temperature detection unit, and in the cooling operation and the compressor is stopped, the previous period indoor blower is operated intermittently. Means for detecting the indoor temperature and changing the intermittent operation time of the indoor blower based on the difference between the indoor temperature and the set temperature are provided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
(Embodiment 1)
FIG. 1 is a refrigeration cycle diagram of an air conditioner according to the present invention. The refrigeration cycle is configured by connecting at least a compressor 1, an outdoor heat exchanger 2, an expansion valve 3, and an indoor heat exchanger 4 sequentially. 5 is an indoor fan, 6 is an outdoor fan, and 7 is an indoor suction temperature sensor. The operation of the above configuration will be described below.
[0013]
When the compressor 1 is stopped during the cooling operation, the indoor blower 5 is driven for a predetermined time (t1: for example, 15 seconds), and during that time, the indoor intake temperature sensor 7 detects the indoor temperature, and the indoor temperature is equal to or lower than the predetermined temperature (ta). Then, after the indoor blower 5 has stopped for a predetermined time (t2: 100 seconds, for example), the predetermined time (t1) is set to 0 seconds and is omitted once. FIG. 8 is a timing chart of the indoor fan operation stop when the compressor 1 is stopped during the conventional cooling operation, and FIG. 9 is a flowchart showing the operation of the conventional indoor fan 5, which is constant regardless of the room temperature. It can be seen that the intermittent operation is repeated at the timing. FIG. 2 shows the timing of stopping the indoor fan operation in the first embodiment of the present invention. FIG. 3 is a graph showing a predetermined time (t1) omission zone in the first embodiment of the present invention. FIG. 4 is a flowchart showing the operation of a series of indoor fans 5 according to the first embodiment of the present invention. In the present invention, as can be seen from FIG. 2, FIG. 3, and FIG. 4, when the indoor temperature falls below the predetermined temperature (ta), the predetermined time (t1) is set to 0 seconds and is omitted once, thereby reducing the indoor fan operation time. This has the effect of reducing the odor generated by the indoor fan operation. In the present invention, the accuracy of the indoor temperature detection is reduced by reducing the indoor fan operation time, but if the temperature is below a predetermined temperature, the indoor temperature is considered to be sufficiently cooled. Therefore, if the predetermined temperature (t2) has elapsed, the set temperature is assumed. Even if the room temperature is increased as described above, there seems to be no discomfort.
[0014]
(Embodiment 2)
Next, a second embodiment of the present invention will be described. When the compressor 1 is stopped during the cooling operation, the indoor blower 5 is driven for a predetermined time (t1: for example, 15 seconds), and the indoor temperature detected by the indoor suction temperature sensor 7 during that time is set to the set value 1 ( If it is lower than ts1 (for example: 5K), after the indoor blower 5 has stopped for a predetermined time (t2: for example 100 seconds), the predetermined time (t1) is set to 0 second and is omitted twice. Furthermore, if the detected room temperature is lower than the set temperature by a set value 2 (ts2 for example: 2K) and less than the set value 1 (ts1), a predetermined time (t1) after the predetermined time (t2) has elapsed. ) Is 0 seconds and is omitted once. FIG. 8 is a timing chart of the indoor fan operation stop when the compressor 1 is stopped during the conventional cooling operation, and FIG. 9 is a flowchart showing the operation of the conventional indoor fan 5, which is constant regardless of the room temperature. It can be seen that the intermittent operation is repeated at the timing. FIG. 5 shows the timing of stopping the indoor fan operation in the second embodiment of the present invention. FIG. 6 is a graph showing a predetermined time (t1) omission zone in the second embodiment of the present invention. FIG. 7 is a flowchart showing a series of operations of the indoor blower 5 in Embodiment 2 of the present invention. In the present invention, as can be seen from FIG. 5, FIG. 6, and FIG. 7, it is possible to reduce the indoor fan operating time by omitting the predetermined time (t1) as 0 seconds due to the difference between the indoor temperature and the set temperature. There is an effect of suppressing odor generated by the operation of the indoor fan. Although the present invention reduces the accuracy of indoor temperature detection by reducing the indoor fan operation time, the indoor fan operation time is adjusted based on the difference between the indoor temperature and the set temperature, so that when the temperature difference is close, Because the temperature is considered to be close to the set temperature, the indoor blower operation time is not reduced, and when there is a sufficient temperature difference, the indoor blower operation time is reduced, so it is considered that the suction set temperature will not be approached immediately. It is possible to reduce the indoor fan operating time while detecting a proper indoor temperature.
[0015]
【The invention's effect】
As described above, the present invention detects the room temperature during a predetermined time (t1) when the compressor stops during cooling operation, and if the detected room temperature is equal to or lower than the predetermined temperature, the predetermined time (t2) has elapsed. The subsequent predetermined time (t1) is omitted once. According to this configuration, the indoor fan operation time can be reduced, and the odor generated by the indoor fan operation is suppressed. In the present invention, the accuracy of indoor temperature detection is reduced by reducing the indoor fan operation time, but if the temperature is below a predetermined temperature, the room temperature is considered to be sufficiently cooled, and temporarily exceeds the set temperature after a predetermined time (t2) has elapsed. Even if the room temperature rises, it is considered that there is no discomfort.
[0016]
Further, according to the present invention, when the compressor is stopped during cooling operation, the room temperature is detected during a predetermined time (t1), and if the detected room temperature is lower than a set value 1 (ts1) with respect to the suction set temperature, The predetermined time (t1) after elapse of the predetermined time (t2) is omitted twice. Further, if the detected room temperature is lower than the set value 2 (ts2) by the set value 2 (ts2) and less than the set value 1 (ts1), the predetermined time (t1) after the elapse of the predetermined time (t2) is 1 I will omit it. According to this structure, it becomes possible to reduce indoor fan operation time, and there exists an effect which suppresses the odor which generate | occur | produces by indoor fan operation. The present invention reduces the accuracy of indoor temperature detection by reducing the indoor fan operating time, but when the temperature difference is close by adjusting the operating time of the indoor fan based on the difference between the indoor temperature and the set temperature. It is considered that the indoor temperature is likely to approach the set temperature, so the indoor fan operation time is not reduced.If there is a sufficient temperature difference, the indoor fan operation time is reduced, so it is considered that the set temperature will not be approached immediately. It is possible to reduce the indoor fan operation time while detecting a proper indoor temperature.
[Brief description of the drawings]
FIG. 1 is a refrigeration cycle diagram of an air conditioner according to a first embodiment of the present invention. FIG. 2 is a timing diagram of operation stop of the indoor fan according to the first embodiment of the present invention. Graph of predetermined time (t1) omitted zone FIG. 4 is a flowchart showing the operation of a series of indoor fans according to the first embodiment of the present invention. FIG. 5 is a timing chart of the operation stop of the indoor fan according to the second embodiment of the present invention. FIG. 6 is a graph showing a predetermined time (t1) omission zone according to the second embodiment of the present invention. FIG. 7 is a flowchart showing the operation of a series of indoor fans according to the second embodiment of the present invention. Timing chart of indoor fan operation stop when compressor is stopped during operation [FIG. 9] Flow chart showing operation of conventional indoor fan [Explanation of symbols]
1 Compressor 2 Outdoor Heat Exchanger 3 Expansion Valve 4 Indoor Heat Exchanger 5 Indoor Blower 6 Outdoor Blower 7 Indoor Suction Temperature Sensor

Claims (2)

室内送風機と、室内温度検知手段とを有する空気調和機であって、冷房運転時であって圧縮機が停止している状態において、前期室内送風機を間欠運転させて室内温度を検知し、室内温度差に基づいて前期室内送風機の間欠運転時間を変化させることを特徴とする空気調和機。An air conditioner having an indoor blower and an indoor temperature detection means, and in a state where the compressor is stopped during cooling operation, the indoor temperature is detected by intermittently operating the indoor blower in the previous period. An air conditioner characterized in that the intermittent operation time of the indoor blower is changed based on the difference. 室内送風機と、室内温度検知手段とを有して構成される空気調和機であって、冷房運転時であって圧縮機が停止している状態において、前期室内送風機を間欠運転させて室内温度を検知し、室内温度と設定温度の差に基づいて前期室内送風機の間欠運転時間を変化させることを特徴とする空気調和機。An air conditioner configured to include an indoor fan and an indoor temperature detecting means, and in the cooling operation and the compressor is stopped, the indoor fan is intermittently operated in the previous period to control the indoor temperature. An air conditioner that detects and changes the intermittent operation time of the indoor blower based on the difference between the room temperature and the set temperature.
JP2003189347A 2003-07-01 2003-07-01 Air conditioner Pending JP2005024154A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007155245A (en) * 2005-12-06 2007-06-21 Sharp Corp Air conditioner
JP2009068729A (en) * 2007-09-11 2009-04-02 Toyotomi Co Ltd Control method of air conditioner depending on detection of heat exchanger temperature
US10655885B2 (en) 2015-09-29 2020-05-19 Daikin Industries, Ltd. Indoor unit of air-conditioning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007155245A (en) * 2005-12-06 2007-06-21 Sharp Corp Air conditioner
JP2009068729A (en) * 2007-09-11 2009-04-02 Toyotomi Co Ltd Control method of air conditioner depending on detection of heat exchanger temperature
US10655885B2 (en) 2015-09-29 2020-05-19 Daikin Industries, Ltd. Indoor unit of air-conditioning device

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