JPH0392200A - Moisture-removing type drying machine for clothing - Google Patents

Abstract

PURPOSE:To accurately communicate the information of sterilization effect to a user by providing a first thermosensitive means whereby a temperature of circulating-air out of a rotary drum is measured, and by providing a second thermosensitive means whereby a temperature of the circulating-air after heat-exchange, is measured. CONSTITUTION:After clothing are thrown in, the title machine revolves both a rotary drum 1 and a heat-exchanging means 3, and an electric current is applied to a heating source 4 and then a drying process begins to start. A temperature of ciculating-air exhansted from a rotary drum 1 is measured by a first thermosensitive means, and a temperature of the circulating-air, of which the moisture is removed after heat-exchange of the circulating-air for onter air, is measured by a second thermosensitive means. After that, a difference between both of measured temperatures is found by a measuring means 13. When it is decided by decision means 12, 14 that a constant drying rate period begins to start, a control means 15 operates a communication means 16, and in the constant drying rate period, the temperature and humidity are high and the temperature in the rotary drum 1 reaches a sterilizing temperature and the temperature difference is almost definite. At the same time, when it is decided by a decision means 17 that a temperature in the drum reaches a specified value or higher, it is controlled through through a control means 18 that electricity is turned on to the heating source 4. In this way, ideal sterilization effect can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dehumidifying type apparatus having a circulating air path which dehumidifies circulating air from a rotating drum using heat exchange means, reheats it with a heat source, and supplies it into the rotating drum. This relates to clothes dryers.

Conventional Technology Conventionally, when damp clothes are dried in this type of dehumidifying clothes dryer, the temperature change inside the rotating drum generally follows the course shown in Figure 6 until the drying is completed. Ta. As shown in FIG. 5, the process of changing the temperature inside the rotating drum can usually be divided into three processes sequentially from the start of operation of the machine. The first step is the preheating drying process, in which high-temperature circulating air heated by a heat source gradually increases the temperature of the damp clothes in the rotating drum, and as it circulates in the rotating drum, This is a process in which the temperature of the circulating air gradually increases. The second step is constant rate drying step B, in which an equilibrium is reached between the amount of heat supplied by the heat source and the amount of heat required to evaporate the moisture contained in the drying temperature, and the temperature inside the rotating drum remains constant. This is a process that changes over time. The third step is the lapse rate drying step C. As the drying of the clothes progresses, the amount of heat needed to evaporate the moisture contained in the clothes gradually becomes unnecessary and is replaced by a heat source. This is a process in which the temperature inside the rotating drum gradually rises as the equilibrium state with the amount of heat generated is disrupted. Finally, drying ends at point D, which is a characteristic of temperature changes within the rotating drum of conventional dehumidifying clothes dryers.

In addition, in a conventional dehumidifying clothes dryer, the specific temperature value of the temperature change inside the rotating drum shown in Fig. 5 is determined by the temperature E of the constant rate drying process, the output of the heat source, etc. Generally, it is greatly affected by the atmosphere in which it is used.

However, since the purpose of the user is to dry damp clothes, there is no need to know the temperature inside the rotating drum or the progress of temperature changes as long as the clothes are dry. At present, type clothes dryers are not equipped with a means to notify them.

Problems to be Solved by the Invention However, when a dehumidifying clothes dryer is used for other purposes than simply drying damp clothes, the temperature value and temperature change inside the rotating drum have a very important meaning. As an example, when looking at the sterilizing effect on general germs that adhere to clothing, it can be easily estimated that the temperature inside the rotating drum has a large effect on the sterilizing effect. ``!For items such as dehumidifying clothes dryers that cannot raise the temperature to an extremely high level because they do not cause significant shrinkage or damage to the clothes being dried, it is not just a matter of whether the temperature is high or low. The pattern of change greatly affects the bactericidal effect.

In particular, the constant rate drying process is known to be an important process from the viewpoint of sterilization effects.

In this process, the temperature is relatively high and the humidity is high, so it has a high heat capacity and causes great damage to common bacteria, resulting in a sterilizing effect.

FIG. 6 is a diagram showing the relationship between the original temperature, which is constant over time, and the sterilizing effect.

In this figure, (a) is a curve showing the sterilizing effect in a high humidity state, whereas (b) is a curve showing the sterilizing effect in a low humidity state. From this figure, it can be seen that the sterilizing effect is greatly influenced not only by temperature but also by humidity, and in (a), the sterilizing effect significantly increases at a certain temperature Ts as an inflection point. In other words, if the temperature is below this inflection point Ts, a sufficient sterilizing effect cannot be obtained even under high humidity conditions. From this, it can be seen that the existence of a constant rate drying step in a relatively high temperature and high humidity condition and the value of the constant rate drying temperature E have important meanings from the viewpoint of the sterilizing effect of a dehumidifying clothes dryer.

However, conventional dehumidifying clothes dryers have no means for reporting the temperature value or temperature change pattern within the rotating drum. For example, from the perspective of sterilization effectiveness, when looking at a machine in operation, it was not possible to know whether the temperature inside the rotating drum was appropriate or whether the temperature changes were following a pattern suitable for sterilization. If these things can be reported to the user, the user can take some measures against the aircraft. For example, this may mean increasing the power of the heat source if the temperature in the rotating drum is insufficient to achieve a sterilizing effect, or reducing the power of the heat source if the temperature is higher than necessary. Might happen.

Therefore, the present invention has the first task of notifying the user whether the temperature inside the rotating drum and the temperature change conditions satisfy the conditions for sterilizing general germs that adhere to clothing.
The purpose is to

The second purpose is to maintain the sterilizing effect by controlling the heat source so that the temperature inside the rotating drum does not rise more than necessary after notifying that the conditions for sterilizing germs on clothing are met. The purpose is to perform drying under very appropriate temperature conditions.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a first heat-sensitive means for measuring the temperature of the circulating air discharged from the rotating drum before heat exchange, and a first heat-sensitive means for measuring the temperature of the circulating air discharged from the rotating drum before heat exchange. 2nd to measure wind temperature
A heat sensitive means is provided, and the notification means is activated when the temperature measured by the first heat sensitive means reaches a predetermined temperature and the difference between the temperatures measured by both heat sensitive means reaches a substantially constant value.

Further, in order to achieve the second object, the present invention has a structure in which the heat source is controlled by the heat source control means if the temperature measured by the first heat sensitive means is higher than a predetermined temperature after the notification means is activated. be.

Function: The dehumidifying clothes dryer of the present invention has the above-mentioned configuration, and the temperature of the circulating air discharged from the rotating drum is measured by the first heat-sensitive means, and the temperature can be used to sterilize general germs adhering to clothes. Notifying means at the time when the constant rate drying process in a high temperature and high humidity state necessary to obtain a sterilization effect in which the temperature reaches a certain temperature and the difference in temperature measured by both the first and second heat sensitive means becomes approximately constant is reached. It was designed to work.

The housing and heat source control means can maintain the temperature in the dehumidifying clothes dryer at a temperature suitable for sterilizing common germs adhering to clothes without unnecessarily increasing the temperature inside the clothes dryer.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIG. 1, 1 is a rotary drum rotatably provided in the main body 2, and 3 is a heat exchange means for introducing hot air from a heat source 4 into the rotary drum 1 and exchanging heat with the outside air. It is.

Reference numeral 5 denotes a circulating air path connecting the heat exchange stage 3 and the heat source 4. Reference numeral 6 represents a cooling air path for guiding the cooling air from the heat exchange means 3, and 7 represents a back plate having intake holes 8 for introducing the cooling air. 1 and 9 are drain ports for draining condensed water generated by heat exchange.

10 is a first heat sensitive means for measuring the temperature of the circulating air circulating in the circulating air path 6 before passing through the heat exchange stage 3; 11 is a first heat sensitive means for measuring the temperature of the circulating air circulating in the circulating air path 5; This is a second heat sensitive means that measures the temperature after passing through the heat exchange means 3. 12 is a first temperature determining means for determining temperature information obtained by the first heat sensitive means; 13 is a first temperature determining means 10;
14 is a temperature difference determining means for determining the temperature difference measured by the temperature difference measuring means 13, and 15 is a first temperature determining means. 12 and the temperature difference determining means 14 to control the notifying means 16. 17 is the first heat sensitive means 11
a second temperature determination means for determining temperature information obtained in 1;
8 is the notification control stage 15 and the second temperature determination means 17
This is a heat source control means that controls the heat source 4 based on the signal.

1. In FIG. 2, the temperature curve a is the first heat sensitive means 1.
A curve representing the temperature change measured at 0, rotating drum 1
It shows the temperature of the circulating air discharged from the air before heat exchange. Temperature curve b is a curve representing the temperature change measured by the second heat-sensitive stage 11, in which the circulating air discharged from the rotating drum 1 is heat-exchanged by the heat exchange stage 3 and before being heated again by the heat source 4. It shows the temperature value of . The temperature curve C is a curve representing the temperature difference between the temperature curve a and the temperature curve b, and shows the temperature value measured by the temperature difference measuring means 13.

Next, the operation of the notification stage 16 in the structure of this embodiment will be explained as shown in FIG. This will be explained using FIG.

In the structure of FIG. 1, when the motor (not shown) rotates, the rotating drum 1 and the heat exchange stage 3 rotate, and the circulating air heated by the heat source 4 enters the rotating drum 1. After exchanging heat with the damp clothes placed in the rotating drum 1, the circulating air becomes high temperature and humid and is discharged from the rotating drum 1. For this reason, the temperature measured by the first heat sensitive means 10 was the same as the outside air before the start of operation, but gradually rose as shown in preheating drying step 5' of temperature curve B shown in Figure 2. Draw a curved line. The high-temperature, high-humidity circulating air discharged from the rotary drum 1 reaches the heat exchange stage 3, where it exchanges heat with the cooling air taken in from the intake port 8 of the back plate 7, and passes through the circulating air path 6. , reaches the heat source 4 again, and the rotating drum 1
The cycle of being introduced into the body is repeated. Here the second
The temperature measured by the heat-sensitive stage 11 of the heat exchanger 3 gradually increases as shown in the preheating drying step κ of temperature curve b in Figure 2, since the temperature of the circulating air after heat exchange is measured by the heat exchanger stage 3. However, the temperature always remains lower than temperature curve a. As a result, the temperature curve C indicating the temperature value measured by the temperature difference measurement stage 13 also gradually rises. The temperature Ts' shown in FIG. 2 indicates the temperature at which general bacteria adhering to clothing can be sterilized, and is obtained from the graph shown in FIG. 3.

FIG. 3 is a diagram showing the relationship between the original temperature, which is constant over time, and the sterilization effect. In this figure, (A') is a curve representing the sterilizing effect in a high humidity state, whereas (A') is a curve representing the sterilizing effect in a low humidity state.

This figure shows that the sterilization effect is greatly influenced not only by temperature but also by humidity. Moreover, in (a'), the sterilizing effect is significantly increased with temperature Ts' as the inflection point. This means that at temperatures below Ts', no sterilizing effect can be obtained even in high humidity conditions. The temperature curve a rises with time, and the first temperature determination stage 12 determines whether the temperature information has reached the sterilizable temperature Ts'. When it is determined that the sterilizable temperature Ts' has been reached, information is sent to the notification control stage 16 indicating that notification may be made. However, at this point, the only requirement is that the temperature has reached sterilization, so the notification means 16 is not activated. Therefore, in order to obtain a sterilizing effect, not only the temperature but also the conditions of high temperature and high humidity are necessary, and these two conditions together are sufficient conditions for the sterilizing effect. Next, the process of determining high humidity conditions will be explained. As shown in FIG. 2, as the temperature curve & passes through the preheating drying step 5' and enters the constant rate drying step, the temperature value maintains a substantially constant state. This phenomenon occurs because the amount of heat supplied by the heat source 4 and the amount of heat required to evaporate the moisture contained in the clothing reach an equilibrium in a certain state. However, although there may be a slight gradient depending on the type and amount of clothing thrown in, the amount of moisture contained in the clothing, etc., this is also considered to be approximately constant in the present invention. In this process, the temperature is approximately constant and the humidity is high. Entering the constant rate drying process means that a high humidity state has been reached, which is one of the necessary conditions for the bactericidal effect as mentioned above. When entering the constant rate drying step B',
Since the temperature curve b also changes at a substantially constant temperature like the temperature curve a, naturally the temperature curve C also changes at a substantially constant temperature. When the temperature curve C becomes approximately constant, it is indicated that the constant rate drying step B' has started.

The value of the temperature difference measured by the temperature difference measuring means 13 is:
At the time when the temperature difference determining means 14 determines that the temperature has reached a substantially constant level, information is sent to the notification control stage 16.

In this way, the information that the sterilizable temperature Ts' has been reached from the first temperature determination stage 12 and the information from the temperature difference determination means 14 that the temperature difference has reached a substantially constant level and the high humidity state is constant are obtained. The information that the drying process has started is sent to the notification control stage 15, and the notification stage 16 is activated. Examples of specific notification means include lighting and flashing light emitting diodes that appeal to the user's visual sense, and notification means that appeal to the user's auditory sense by ringing a cabinet, buzzer, etc. There are means etc.

Next, the operation of the heat source control means 18 will be explained using FIG. 4. After the start of operation, the temperature curve a' measured by the first heat sensitive means 10 reaches a temperature Ts' at which sterilization is possible, and the temperature difference determining means 14 detects that the temperature difference is approximately constant, and the sterilization is carried out. Information that the conditions sufficient to obtain the effect are satisfied enters the notification control stage 16, and after a predetermined period of time after the notification means 16 is activated, the temperature information from the first heat-sensitive means is transferred to the second heat-sensitive means.
If the temperature determination means 17 determines that the temperature is higher than the predetermined temperature Th, information is sent to the heat source control means 18. As a result, the heat source 4 is controlled by the heat source control means 18, and is dried at a temperature between the sterilizable temperature Ts' and the predetermined temperature Th. If the predetermined temperature Th is set at a temperature that does not cause significant shrinkage or damage to the clothes, the clothes can be dried at a temperature that does not have any negative effects on the clothes and is suitable for sterilization. .

Effects of the Invention As described above, the present invention provides a dehumidifying clothes dryer with a first heat-sensitive means for measuring the temperature of the circulating air discharged from the rotating drum, and a second heat-sensitive means for measuring the temperature of the circulating air after heat exchange. Means 2
Two heat-sensitive means are provided, and temperature information obtained by the two heat-sensitive means is used to accurately inform the user of information on the sterilizing effect of a dehumidifying clothes dryer, which is unprecedented. Since the drying device operates under ideal drying temperature conditions that do not adversely affect clothes by using heat source suppressing means, it is possible to obtain a sterilizing effect without damaging clothes excessively.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the configuration of a dehumidifying clothes dryer which is an embodiment of the present invention, and Fig. 2 shows the temperature measured by each heat-sensitive means when damp clothes are dried in the same dehumidifying clothes dryer. Figure 3 is a diagram showing the relationship between the original temperature, which is constant over time, and the sterilization effect, and Figure 4 is a diagram showing the relationship between the original temperature, which is constant over time, and the sterilizing effect. Figure 6 shows the temperature change inside the drum when wet clothes are dried in a conventional dehumidifying clothes dryer. FIG. 3 is a diagram showing the relationship between temperature and sterilization effect. 1...Rotating drum, 2...Main body, 3.
... Heat exchange means, 4 ... Heat source, 6 ...
...Circulating air path, 10...First heat sensitive means,
11...Second heat sensitive means, 16...Notification means, 18...Heat source control means.

Claims (2)

[Claims] (1) A rotating drum that rolls clothing, a blower that blows air into the rotating drum, a heat source that heats the air, and a circulating air path that returns exhaust from the rotating drum to the heat source. , a heat exchange means for dehumidifying is disposed in the middle of the circulating air path, a first heat sensitive means for measuring the temperature of the circulating air before passing through the heat exchange means in the circulating air path, and a first heat sensitive means for measuring the temperature of the circulating air before passing through the heat exchange means in the circulating air path; A second heat sensitive means is provided for measuring the temperature of the circulating air after passing through the heat exchange means. A dehumidifying clothes dryer configured to activate a notification means when the difference reaches a substantially constant value. (2) The dehumidifying clothes dryer according to claim 1, wherein the heat source is controlled by the heat source control means if the temperature measured by the first heat sensitive means is higher than a predetermined temperature after the notification means is activated.