JPS5932731A - Window type air conditioner - Google Patents

Abstract

PURPOSE:To save energy by a method wherein the degrees of discomfort of indoor and outdoor air are judged by sensing indoor temperature and humidity and outdoor temperature and humidity and, only when the degree of discomfort of the outdoor air is lower than that of the indoor air, ventilating operation is performed. CONSTITUTION:The setting input circuit 13 of a central processing unit 11 can arbitrarily set the indoor temperature TS and the indoor humidity HS. A calculating part for degree of discomfort 15 calculates the degree of indoor discomfort FA from an indoor temperature sensor S1 and an indoor humidity sensor S2, the degree of outdoor discomfort FO from the outdoor temperature sensor S3 and an outdoor humidity sensor S4 and the degree of set discomfort FS from the set temperature TS and the set humidity HS. When the degree of set discomfort FS is higher than the degree of indoor discomfort FA, a comparator 14 selects blowing operation preferentially without reference to the magnitude of the degree of outdoor discomfort FO. On the contrary, when the degree of indoor discomfort FA is higher than the degree of set discomfort FS, the degree of indoor discomfort FA is compared with the degree of outdoor discomfort FO and cooling operation is performed when the former FA is lower than the later FO, while ventilating operation is performed when FA is higher.

Description

[Detailed Description of the Invention] The present invention relates to a window type air conditioner, and when performing ventilation operation, only when the degree of discomfort outdoors is smaller than the degree of discomfort indoors, outside air is taken in to obtain ventilation. 33 [Technical background of the invention and its problems] Regarding the window type air conditioner, which has a ventilation operation function that brings outside air into the room, and when the outdoor temperature drops, ventilation operation is performed instead of cooling operation. Window-type air conditioners are now becoming the mainstream air conditioner because they have features such as natural ventilation and energy savings. Conventionally, switching between cooling operation and ventilation operation in these 7 window air conditioners was basically! Unexamined Japanese Patent Publication No. 5 2-7 9 5
4 As described in Publication No. 3, L7 is carried out according to the temperature difference between the indoor side and the outdoor side.3 In practice, there is a system in which ventilation operation is performed when the outdoor temperature is below a predetermined value. As shown in Figure 1, for example, the switching point is when the outdoor temperature TO is 25°C, and when the temperature exceeds 25°C, the cooling/blowing control operation is started, and when the temperature is below 25°C, ventilation is started. The 1i control of operation was performed regardless of the set temperature Ts. in this case,
It had the following drawbacks.

(1) The outdoor temperature 'ro is 25℃ or higher and the indoor temperature T
Even when A rises due to some heat load and becomes To ( T A, that is, under the conditions of the triangular region ■, it is difficult to maintain cooling operation. Under this condition, if outside air is taken in, The indoor temperature TA is at least the outdoor temperature To
This is because the speed decreases at t, so there is no need to drive at the same time.

(2) The outdoor temperature To is below 25℃ and To(TsO
In that case, there was a risk that it was too cold. This is because under the conditions of the four-fish-shaped area 11, ventilation operation will continue indefinitely even if the indoor temperature TA falls below the set temperature Ts.Also, as mentioned above, only the temperature is detected. If the outside air is brought in to obtain a cooling effect when the outside air is below a certain temperature, even if the outside air is low temperature, if it is brought into the room when it is high humidity, it will actually cause discomfort to the human body. [Objective of the Invention] The present invention has been made in view of the above problems, and it detects the temperature or humidity indoors and outdoors to determine the unpleasantness of indoor air and outdoor air. By ventilating only when the outdoor air is less unpleasant than the indoor air, we will provide one window-type air conditioner that is extremely comfortable, old-fashioned, and reliably energy-saving.

[Structure of the invention]

In order to achieve the above object, the present invention provides an indoor sensor for detecting indoor discomfort by sensing temperature or humidity, etc. on the indoor side, and also detects outdoor temperature, humidity, etc. on the outdoor side. An outdoor sensor is installed to detect the level of discomfort outside the building. The output sides of these indoor and outdoor sensors are used to compare the indoor and outdoor discomfort levels using the sensor outputs, and also to compare the indoor discomfort level with the set discomfort level obtained from the set values of temperature, etc. A control circuit that opens and closes the outer partition plate and controls ventilation cooling or air blowing operation is connected. In this control, when the indoor discomfort level is smaller than the set discomfort level, maintaining the current status is most comfortable, so air blowing operation is performed every jli without omitting cooling and ventilation operations. Conversely, if the indoor discomfort level is greater than the set discomfort level, cooling operation or ventilation operation is performed depending on the level of discomfort indoors and outdoors.

If the degree of discomfort indoors is smaller (in some cases, bringing in outside air will only increase the degree of discomfort, so cooling operation is forced to approach the set discomfort level, and if the degree of discomfort indoors is greater) The system is configured to actively take in outside air and perform ventilation operation to reduce the level of discomfort indoors at least to the same level as outdoors.

Hereinafter, preferred embodiments of the window type air conditioner according to the present invention will be described in detail with reference to the accompanying drawings. .

As shown in Figures 2 and 3, a window type air conditioner with an outside air intake function has an indoor/outdoor partition plate 1 in the center. An indoor heat exchanger 2 and an indoor fan 3 are provided on the outdoor side B, and an outdoor heat exchanger 4 and an outdoor fan 15 are provided on the outdoor side B, respectively. Figure 2 shows the air conditioner during cooling operation, at which time the indoor/outdoor partition plate 1 is closed and the compressor (not shown) is activated, causing the indoor side 77 to rotate as shown by the arrow. As shown, the indoor air is heat exchanged and cooled by the indoor heat exchanger 2, while the outdoor air cools the outdoor heat exchanger 4 as shown by the arrow as the outdoor fan 50 rotates. Figure 3 shows the ventilation operation, when the indoor/outdoor partition plate 1 is open and the compressor is stopped, and outside air is taken in by the rotation of the indoor fan 3.
The indoor air outside the room is being exhausted. Although not shown in the figure, in the case of ventilation operation, the indoor/outdoor partition plate 1
When the compressor and both row fans 5 are closed, only the single indoor fan 3 rotates.

□These indoor/outdoor fans 3, 5, indoor/outdoor partition plate 1, and compressor all have an indoor cyan motor 7 and an indoor/outdoor partition opening/closing motor whose energization is individually controlled by opening/closing a relay 6, as shown in FIG. 8, an outdoor fan motor 9 and a compressor motor 10 are driven. The opening and closing of this relay 6Q is controlled by a control circuit 12 whose main part is a central processing unit 11 as shown in FIG. That is, a □ setting input circuit 13 for arbitrarily setting indoor temperature and humidity is connected to the central processing unit 11, and values inputted less than these become the set temperature Tso and the set humidity Is. Furthermore, four sensors S are connected in parallel via a comparator 14. Two of these sensors are an indoor temperature sensor S1 and an indoor humidity sensor S2, and both are installed on the indoor side of the air conditioner to detect the indoor temperature T, A and indoor humidity HA. . The remaining two sensors are an outdoor temperature sensor S3 and an outdoor humidity sensor S4, both of which are provided on the outdoor side of the air conditioner to detect the outdoor temperature TO and humidity Ho. Based on these sensor outputs, Comparator S performs two types of comparisons, but the one that is directly compared is the discomfort level F, which is uniquely determined from temperature and humidity. If the temperature and humidity are given, the discomfort degree calculation unit 15 built in the central processing unit 11 calculates it.
It's about to be served. And indoor temperature sensor'
The indoor discomfort level FA is obtained from the output of S I and the indoor humidity sensor S2, and the indoor discomfort level FA is obtained from the output of the outdoor temperature sensor S3 and the outdoor humidity sensor S4.
The outdoor discomfort level is F based on the output.

will be met. Moreover, it is configured so that the set discomfort level FB can be obtained from the set temperature Ts and the set humidity H8.

The first comparison in the comparator 14 is between the room discomfort level FA' and the set discomfort level p's, and when the set discomfort level FSO is larger, an output is output and the output is sent to the central processing unit 11 and its output. The relay P line 1416 connected to the side is driven to select warm air operation, and this selection is made with priority regardless of the magnitude of the outdoor discomfort Fo. . In addition, the second comparison is the indoor discomfort level Ft,
The setting discomfort level is 1i'16.

If the indoor discomfort level is also large, compare the magnitude of the indoor discomfort level Fi and the outdoor discomfort level Fo, and when the outdoor discomfort level FoO is larger, operate the cooling operation, and vice versa - when the indoor discomfort level FA is larger, operate the ventilation operation. The central processing unit 11 activates the associated relay 6 via the relay driver 16 as shown in FIG. ing.

It should be noted that it is not necessary to limit the factors to the degree of discomfort to temperature 4 and humidity as mentioned above; there are various other factors that cause discomfort to the human body (for example, carbon dioxide concentration, etc.). It is, of course, possible to configure the system in addition to humidity.

The operation of the present air conditioner having the above-mentioned structure will be explained with reference to chart 710 in FIG. 6.

Set temperature T to set indoor air temperature and humidity to desired values
s and the set humidity H8, are set in the setting input circuit 1 after the start of operation.
3. Central processing unit 11. Enter it in. When the operation starts, the indoor fan 3 and the outdoor fan 3.

As the Noah 15 rotates, the indoor air is sent to the indoor temperature sensor 81 and indoor humidity sensor s2 provided on the indoor side, and the air is transferred to the outdoor temperature sensor s3 and outdoor humidity sensor s4 provided on the outdoor side. 1. If the temperature and humidity are detected by these sensors when the air is stagnant, it will be affected by the light heat of the equipment and will lack accuracy. After the fans 3 and 5 rotate, each sensor detects indoor temperature TA and indoor humidity I.
The fAS outdoor temperature 'rO and the off-campus humidity Ho are detected.

child,? The temperature and humidity detected by 1 are sent to 1 via comparator 14.
- is once manually input to the central processing device 11, and is calculated as the discomfort degree F by the discomfort degree calculation unit 15 in the device6.The discomfort degree F can be calculated using the ASHRAE pleasure diagram shown in FIG. Since the degree of discomfort is calculated from the formula F=too- (percentage of people who feel comfortable), the degree of discomfort calculation section 1.5 calculates F=Mr. T is temperature and H is humidity) are stored in advance.

An example of how to read a pleasure diagram is as follows1.
'The dry bulb temperature obtained from the temperature sensor is 25°C, and the relative humidity obtained from the humidity sensor is 60 factors (wet bulb temperature is 1
7.8°C), first find the intersection a of these in the figure. , Next, extract a straight line passing through the above intersection point a from among the straight lines that intersect with the relative humidity straight line group, and if a straight line passing through the intersection point has not been drawn, draw a new straight line in the same direction as the straight line group. ), if you extend this extracted straight line one square of land and read the value on the horizontal axis at the point where it intersects with the curve, that value will be the percentage of people who feel comfortable with their body. , in this case 90%
Totoru. , 2, and by substituting this value into the equation, we obtain the discomfort level F-10%.

Based on this principle, as shown in FIG. 6, the set discomfort level Fs is determined from the set temperature 'rs and the set humidity H8, the indoor discomfort level FA is determined from the indoor humidity TA and the indoor humidity -IA, and the outdoor temperature To and the outdoor humidity Ho. The outdoor discomfort level F (+) is calculated separately from the above. After these discomfort levels F are calculated, a decision is made to abandon f. In this judgment, the indoor discomfort level FA is higher than the set discomfort level F'S. If it is small, the first comparison output is output from the comparator 14 regardless of the outdoor discomfort level FO, and the medium heat treatment device 11 sends a ventilation operation command to the relay dryer 16. Figure 8 shows the ventilation operation range17.33 Based on this figure, the meaning of ventilation operation can be found as follows: Under FA conditions, comfort can be maintained sufficiently with the current indoor air, so cooling operation and If ventilation operation were carried out, this comfort would be destroyed, and therefore, ventilation operation was chosen as a means of maintaining the status quo.
This means that From this meaning, the ventilation operation here includes operation stoppage. , return to Figure 6 again. The indoor discomfort level FA is greater than the set discomfort level Fs, that is, F
A) The next decision is made which gives a second comparison output in case of Fs. This indoor discomfort level FA is the set discomfort level Fs
, but smaller than the outdoor discomfort level FO, that is, when FO>FA>ISs, the central processing unit 11 issues a cooling operation command and switches to the cooling operation shown in FIG. Through this cooling operation, indoor air is cooled while being isolated from outdoor air until the indoor temperature TA drops to the set temperature 'rs. In addition, as dehumidification occurs along with this cooling, the indoor humidity I (A) approaches the set humidity H8, and the indoor discomfort level FA is corrected to a much more comfortable set discomfort level FS. 1i'i,, > above S, and at the same time, when this indoor discomfort level FA is greater than the outdoor discomfort level F, the central processing unit 11 sends a ventilation operation command to the relay driver 16, and by this sending, the The closed indoor/outdoor partition plate 1 is opened and enters the ventilation operation state shown in Figure 3. This ventilation operation range is shown in Figure 8, and the indoor discomfort level FA is higher than the outdoor discomfort level. Larger means that the straight line Fo-FA shown in the figure is also in the lower part 3. During this ventilation operation, the indoor air is replaced with outdoor air, which is less unpleasant, and the outdoor air is If the discomfort level FO is smaller than the set discomfort level FS, l:, it can be brought as close as possible to the set discomfort level Fξ, and the target comfort can be secured.The outdoor discomfort level Fo is the set discomfort level If it is larger than FS, the limit in ventilation operation is to make the indoor discomfort level FA equal to the outdoor discomfort level F.The indoor discomfort level FA reaches this limit line, that is, the straight line Fo = FA. After that, switch to cooling operation. 1. The set discomfort level 1i's value χ is corrected by forced cooling. In this case, the indoor discomfort level FA is not directly corrected by cooling operation , the power consumption in the triangular region ■ under such conditions can be significantly reduced.1. .

According to the above embodiment, air blowing 1. 'Cooling and ventilation operations are switched based on the overall degree of undesirability determined from these two factors, not just temperature, but also humidity, resulting in more comfortable air conditioning. In addition, even when cooling, this switching is performed after ventilation under certain conditions, so sudden changes (E) can be avoided and a cooling effect that does not feel strange can be obtained.
Regardless of the set discomfort level, if the discomfort level is 5 lower, that state is preferentially maintained, making it possible to avoid excessive cooling and high humidity caused by ventilation operation. .

〔invention? [Modification] Fig. 9 is a block diagram showing a modification of the above-described embodiment in which the degree of discomfort is detected by a meter based on only the temperature. As illustrated, indoor temperature sensor 81E1. The output sides of the and outdoor temperature sensor s3 are connected to the central processing unit 1 via a TA comparison circuit 17 and a 'ro comparison circuit 18, respectively.
9 is connected.

A TA comparison circuit 17 compares the set temperature TB inputted from the setting input circuit 20 and the indoor temperature cm sl output, and outputs an output when the indoor temperature TA is smaller than the set temperature Ts, and the central processing unit 19 blows air. It is configured to send a driving command to the relay output circuit 21. In addition, the To comparison circuit '118 compares the magnitude of this indoor severity level TA and the output of the outdoor temperature sensor s3 under the TA)Ts condition. It is configured to output to the central processing unit 19 an output signal that causes the cooling operation to be performed when 'rA)To, and the ventilation operation when TA<To. A timer circuit 22 has a function of delaying the leakage of the indoor/outdoor partition plate 1 for a certain period of time when a command sent from the central processing unit 19 switches from cooling operation to ventilation operation.

To explain the operation of this modified example, the ventilation, cooling, ventilation, and air areas are the same as those of the previously described embodiments, as shown in FIG. 10, except for the grammeter. As can be seen from FIG. 11, switching between these operating ranges is achieved by changing Ts and TI.
The first priority is the comparison in the A comparison circuit 17, and TS>TA
Be sure to operate the fan under these conditions, and turn off T when other than these conditions.
The values of A and To are compared in the 'ro comparison circuit 18, and T
If o is higher, it is cold.

If the temperature is low, perform ventilation operation.11. Therefore, under the condition TA>To, the compressor is turned off, thereby saving power, and at the same time, it is possible to lower the indoor temperature TA by changing the value of the outdoor temperature To. Also, T.A.
＜Since the cooling operation is automatically switched to at To, the time it takes for TA to reach the set temperature Ts is also significantly different compared to the case where the cooling operation is performed directly. Even if To drops slightly, the TA comparison circuit 17 acts preferentially based on the set temperature Ts, automatically switching between ventilation and blower operation, eliminating the worry of over-cooling.

FIG. 13 shows control when the condition of T(1(TA) is reached during cooling operation.
8 works and switches from cooling/operation to ventilation operation and the room is promoted.
Even though the cutting plate 1 tries to open, under the condition of To<TA, the timer circuit 22 is activated and the indoor/outdoor partition plate 1 cannot be opened until a certain amount of time has elapsed since the compressor is turned off. It has become. Therefore, it is possible to avoid the phenomenon in which the heat of the outdoor heat exchanger 4 flows back into the room, which occurs when the indoor/outdoor partition plate 1 is opened immediately without a time delay, and the temperature increases temporarily due to this phenomenon. can be eliminated.

In this way, comfort within a possible range can be ensured using only temperature parameters without considering humidity.

FIG. 14 shows the operating ranges of air blowing, cooling, and ventilation when the degree of discomfort F is detected by the humidity H, and is another modification of the above-described embodiment.

That is, in this case, instead of the set temperature TS, the set humidity H
, ′ is input, and the temperature sensor S becomes the humidity sensor.
, and these humidity sensor outputs are indoor 2'lI
5, S which will indicate "degree ■ (A and outdoor humidity H,)"
, I] It can also be applied to places where high quality is required, for example, where books are stored. , In short, the present invention exhibits the following impressive effects5. (1) When the degree of discomfort in the outdoor air is low, the cooling effect can be obtained only by ventilation operation, resulting in significant savings. A・
Since the compressor is operating during ventilation operation, noise can be reduced.

'', only the indoor air when the level of discomfort is low
/(7), so you can get the ideal cooling effect without feeling strange.

(2) The degree of comfort is detected from temperature and humidity; this provides an extremely comfortable cooling effect that does not cause discomfort. (3) Detecting the quotient from the humidity has a simple configuration and is suitable when a specified humidity is required. , (4) By detecting the comfort level from the temperature, it is possible to ensure a sufficient level of practical comfort5.
,

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the operating range of a conventional window type air conditioner, and FIGS. 2 and 3 are diagrams showing a schematic operating mechanism of a preferred embodiment of the present invention. The latter is a sectional view during cooling operation and ventilation operation, FIG. 4 is a relay circuit diagram for driving the elements shown in FIGS. 2 and 3, and FIG. Figure 6 is the same flowchart 1.
・Figure 7 shows ASHRAE, which is the standard for calculating discomfort level.
Pleasure diagram, FIG. 8 is an explanatory diagram showing the operating range of a preferred embodiment of the present invention, FIG. 9 is a circuit diagram of a modified example of the present invention,
Figure 10 is an explanatory diagram showing the same operating range, Figures 11 to 13
The figure is an explanatory diagram showing the operating range from 1 to 1 with the passage of time, and Fig. 14 is an explanatory diagram showing the operating range of another modification of the present invention.In the figure, 1 is an indoor/outdoor partition. board, 12 is a control circuit, 15 is a discomfort level calculation unit, Sl and Sl are indoor sensors consisting of an indoor temperature sensor and an indoor humidity sensor, S and S4i, l an outdoor temperature sensor and an outdoor humidity sensor (L), Sen “
Is Lee-1TA indoor, and HA indoor? 'ni j kang,'
ro is the outdoor temperature, Ho is the outdoor humidity, and T is the setting t11□
, 14 degrees, I-1,, is setting b! degree. Representative J111 Patent Attorney Kinutani Ir';Ja Figure 5 Figure 7 Figure 8 S A- Figure 13 Figure 14 S A-

Claims (4)

[Claims] (1) Open the indoor/outdoor partition plate according to the given setting value. In a window type air conditioner that performs ventilation operation by closing the indoor/outside partition plate and performs cooling operation or ventilation operation by closing the indoor/outside partition plate, an indoor sensor is installed on the indoor side to detect the degree of discomfort in the room. □l K-o□
1□F. 4. Okay, let's set up two chairs and put them up indoors.
When the indoor discomfort level obtained from the output is smaller than the set discomfort level obtained from the above set value, the indoor/outdoor partition plate is closed and the ventilation operation is started. When the indoor discomfort level is larger than the outdoor ratio and comfort level obtained from the outdoor sensor output, the cooling operation is turned on. Also, when the indoor discomfort level is smaller than the outdoor discomfort level, the above indoor/outdoor partition plate A window-type air conditioner characterized in that a control circuit for opening and performing ventilation operation is connected to the output and power sides of the indoor sensor and outdoor sensor. (2) The indoor sensor is an indoor temperature sensor and an indoor humidity sensor that respectively detect indoor temperature and humidity, and the outdoor sensor is an outdoor temperature sensor that detects outdoor temperature and humidity, respectively. And an outdoor humidity sensor, this! Sensor output, power? There are two important factors: temperature and humidity.
The control circuit has a built-in discomfort level calculation unit that calculates the level of discomfort, and the setting level is provided with the set level of discomfort. It is obtained from the set temperature and set humidity using the distortion pleasantness calculation means. Claims 1. Section 1, F. Nod-shaped air conditioner, machine. , . (3) The indoor temperature sensor and the outdoor temperature sensor respectively detect the humidity inside the kiln.The indoor temperature sensor and the outdoor temperature sensor detect the outdoor humidity, and the set value given is the humidity. A window type air conditioner according to claim 1, characterized in that the above-mentioned degree of discomfort is obtained from the sensor output of the air conditioner. (4) The above-mentioned indoor sensor and outdoor sensor are respectively an indoor temperature sensor that detects the indoor temperature and an outdoor temperature sensor that detects the outdoor temperature, and are given set point temperatures, and these seven The above discomfort level was obtained from the power output! f! The window type air conditioner according to claim 1, defined as j2.