JP2012137225A - Ventilating device for store - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clear a required ventilation amount, eliminate temperature unevenness within the store, suppress the load of an air conditioner, and suppress the load of refrigerant/freezing showcases within the store by controlling an air sending amount of a ventilation fan to achieve a proper air sending amount considering the situation of a difference from a set temperature or an external air temperature or a heat load for each area, regarding ventilation in one room such as a convenience store.SOLUTION: A space under the roof connected to the inside of a store constitutes an air exhaust duct, and ventilating holes leading to the air exhaust duct are provided at least on the ceiling within the store. For lower portions of showcases installed within the store, ventilating holes leading to the exhaust duct are also provided outside of the store, and a ventilation fan is mounted on the wall face of the upper part near a window of the store. A ratio between an air exhaust amount via the air exhaust duct and an air exhaust amount via the ventilation fan is controlled based on a determination using at least a room temperature within the store.

Description

  The present invention relates to a ventilator for a store such as a convenience store.

  There is a system that calculates the difference between the indoor temperature and the outdoor temperature of each room when ventilating the building, preferentially exhausts from the room where the temperature difference is the smallest, and does not exceed the required ventilation volume of the entire building ( Patent Document 1).

  On the other hand, in stores such as convenience stores, the inside of the store is cooled or heated by an air conditioner, and a refrigerated showcase and / or a freezer showcase for storing food for sale is installed. However, the front of a store such as a convenience store is glassed so that the inside of the store can be seen from the outside, and the vicinity of the entrance of the store located on the front side of the store is glassed.

  For this reason, the front side of the store is easily affected by the outside air depending on the time zone and season of the day, and there is a large difference in heat intrusion into the store due to radiant heat and conduction heat. Further, in the vicinity of the ceiling in the store, the temperature rises due to air convection in the store and heat generated by a lighting fixture such as a fluorescent lamp attached to the ceiling. In particular, when the outside air temperature is high, the in-store temperature is further increased. For this reason, in order to remove the heat of the ceiling portion, generally, measures such as providing a ventilation fan near the lighting fixture are taken.

  Further, in the vicinity where the refrigerated showcase and / or the refrigerated showcase are installed, the temperature is low due to leaked cold air from the refrigerated showcase and / or the frozen showcase. In this way, even if there is only one room in the store, temperature unevenness occurs depending on the area. For this reason, it is difficult to say that the store is in a comfortable environment.

  In this situation, if ventilation is performed from a designated place throughout the day and year, the air at the proper temperature is exhausted, and hot air in the summer and cold air in the winter are introduced into the store. The load in the store increases.

JP 2004-301349 A

  In the system of Patent Document 1, the priority of ventilation from a plurality of rooms is determined by the temperature difference between the indoor temperature and the outdoor temperature, and the ventilation amount is determined. However, as described above, in a store such as a convenience store, In addition, temperature unevenness occurs in one room due to the building structure and equipment (showcase, lighting, etc.) installed in the store. The load of the air conditioner and the food cooling device in the store will vary depending on the outside air temperature. In this case, when considering the load of the air conditioner and the food cooling device in the store, even if the temperature difference between the indoor temperature and the outdoor temperature is the same temperature difference of 5 ° C., it will be shown in FIG. Thus, for example, the load size of the air conditioner and the food cooling device in the store differs between 5 ° C from 15 ° C to 20 ° C and 5 ° C from 20 ° C to 25 ° C.

  In addition, it is also stipulated that the ventilation rate defined by the Building Standards Law be cleared. (This defined ventilation rate is referred to as the required ventilation rate hereinafter). When trying to clear this necessary ventilation, even if the surroundings of the determined ventilation port are at an appropriate temperature, the air is exhausted from there, and hot air is introduced in summer and cold air is introduced in winter. Furthermore, the area of this appropriate temperature varies depending on the season and day.

  In view of such points, the present invention clears the necessary ventilation amount in a convenience store and the like, and as the operation control of the ventilation fan installed to eliminate the temperature unevenness in the store, the situation inside and outside the store at that time By controlling the ventilation fan so as to be an appropriate air flow considering the airflow, clear the necessary ventilation volume at convenience stores, etc., eliminate uneven temperature in the store, suppress the load of the air conditioner, and The load of a refrigerated showcase and / or a refrigerated showcase installed in the store is intended to be suppressed.

  Further, the present invention saves energy by suppressing the load on the in-store air conditioner and suppressing the load on the refrigerated showcase and / or the refrigerated showcase in accordance with the Building Standard Law established for such stores. It shall be effective.

  The ventilator in the store according to the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and has a ventilation port that leads to the exhaust duct at least on the ceiling in the store, and is attached to the wall surface at the top of the store window. And a ratio between the exhaust amount through the exhaust duct and the exhaust amount through the exhaust fan is adjusted based on a determination using at least room temperature in the store.

  Further, the ventilator in the store of the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and includes at least a plurality of ventilation openings leading to the exhaust duct on the ceiling in the store, and at the upper part of the store window. A window ventilation fan attached to a wall surface and a ceiling ventilation fan attached to each of the ventilation openings, and based on a determination using at least room temperature in the store, the exhaust amount by the ceiling ventilation fan and the exhaust amount by the window ventilation fan The ratio is adjusted.

  Further, the ventilator in the store of the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and at least the ventilation port leading to the exhaust duct is provided on the ceiling in the store, and the exhaust duct is also provided near the showcase. And a ventilation fan attached to the upper wall of the store window, and exhaust through the exhaust duct based on a determination using at least room temperature in the store. The ratio between the amount and the amount of exhaust through the ventilation fan is adjusted.

  Further, the ventilator in the store of the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and includes at least a plurality of ventilation openings leading to the exhaust duct on the ceiling in the store, and further, at the lower part of the showcase Is also provided with a vent opening leading to the exhaust duct, a window vent fan attached to the wall at the top of the store window, a ceiling vent fan attached to each of the vent openings, and a vent fan at the bottom of the showcase The ratio of the exhaust amount by the ceiling ventilation fan, the exhaust amount by the ventilation fan at the lower part of the showcase and the exhaust amount by the window ventilation fan is adjusted based on the determination using at least room temperature in the store. .

  Further, the determination includes at least an outside air temperature or a set temperature, a temperature near the window, a temperature on a ceiling side, and a temperature near a showcase.

  According to the present invention, the necessary ventilation amount in a convenience store or the like is cleared, temperature unevenness in the store is eliminated, the load of the air conditioner in the store is suppressed, and the refrigerated showcase installed in the store And / or the load of the freezer showcase can be reduced.

It is a side view which shows schematic structure of the convenience store provided with the ventilation apparatus in the store of Example 1, 2 which concerns on this invention. It is a figure which shows the relationship of the power consumption with respect to the outside temperature of the store air conditioner of Example 1, 2 which concerns on this invention with a graph. It is a related figure of the calculated value based on the relationship between the outside air for every season in the store of Examples 1 and 2 concerning the present invention, the window, the temperature of the ceiling, and the set temperature in the store. It is a control flowchart of each ventilation fan of Example 1, 2 which concerns on this invention. It is a block diagram of the control apparatus which controls the driving | operation of each ventilation fan of Example 1, 2 which concerns on this invention. It is explanatory drawing of the structure which provided the damper apparatus in the suction inlet side of each ventilation fan of Example 1, 2 which concerns on this invention. It is a block diagram of the control apparatus which controls each damper apparatus of Example 1, 2 which concerns on this invention. It is a figure which shows one measurement data, such as the temperature of each part in a summer, an intermediate period, and winter, and a lighting load about the store inside and outside environment of Example 1, 2 which concerns on this invention. It is a figure which shows the ventilation fan control window ratio and ventilation fan control ceiling ratio which were computed according to the thermal load for the operation control of each ventilation fan of Example 1, 2 which concerns on this invention. It is a figure which shows the relational expression of the window-side temperature and window solar radiation amount in the summer when the window of the store of Examples 1 and 2 which concerns on this invention turned to the northeast. It is a side view which shows schematic structure of the convenience store provided with the ventilation apparatus in the shop of Example 3 which concerns on this invention. It is a related figure of the temperature near the window, a ceiling, and a showcase in the summer in the shop of Example 3 which concerns on this invention, and shop preset temperature. It is a related figure of the temperature of the window side in the shop of Example 3 which concerns on this invention in the winter season, the ceiling, the temperature of a showcase addition, and preset temperature in a shop. It is a block diagram of the control apparatus which controls the driving | operation of each ventilation fan of Example 3 which concerns on this invention. It is a control flowchart of each ventilation fan of Example 3 which concerns on this invention. It is explanatory drawing of the structure which provided the damper apparatus in the suction inlet side of each ventilation fan of Example 3 which concerns on this invention. It is a block diagram of the control apparatus which controls each damper apparatus of Example 3 which concerns on this invention. It is a figure which shows one measurement data of the summer about the store inside / outside environment of Example 3 which concerns on this invention. It is a figure which shows one measurement data of winter about the store inside / outside environment of Example 3 which concerns on this invention. It is a side view which shows schematic structure of the convenience store provided with the ventilation apparatus in the shop of Example 4 which concerns on this invention.

  The ventilator in the store according to the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and has a ventilation port that leads to the exhaust duct at least on the ceiling in the store, and is attached to the wall surface at the top of the store window. And a ratio between the exhaust amount through the exhaust duct and the exhaust amount through the exhaust fan is adjusted based on a determination using at least room temperature in the store.

  Further, the ventilator in the store according to the present invention is configured such that the back of the ceiling connected to the store is configured as an exhaust duct, and has a ventilation port leading to the exhaust duct at least on the ceiling in the store, and a showcase installed in the store The lower part also provides a vent opening leading to the exhaust duct outside the store, and a ventilation fan attached to the wall at the top of the store window, based on judgment using at least the room temperature and the set temperature of the air conditioner in the store The ratio of the exhaust amount through the exhaust duct and the exhaust amount through the ventilation fan is adjusted.

First, an embodiment of a ventilator in a store according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a schematic configuration of a convenience store 1 provided with a ventilator in a store according to the first and second embodiments of the present invention. The convenience store 1 has a front side 2 made of glass and a rear side. 3 and both left and right sides are constituted by heat insulating walls. On the front side 2, although not shown, an entrance / exit (not shown) is formed by a glass door. In addition, an air conditioner 5 for performing air conditioning in the store 4 is installed outside the store on the back side 3, and the store 4 is kept at a predetermined temperature (referred to as a set temperature). Thus, the air conditioner 5 is controlled to be cooled or heated. In the store 4, a refrigerated showcase and / or a frozen showcase (hereinafter referred to as a showcase 6) for storing sold foods are installed, and a display shelf (not shown) for sold products is further installed.

  In this invention, it is the structure which utilizes the ceiling back 7 formed in the upper part of the ceiling 9 of the shop 1 as the exhaust duct 8 (it is also called the ventilation duct 8). The exhaust duct 8 may be configured by the ceiling back 7 itself, but the exhaust duct 8 specially formed in a shape such as a rectangular cross section or a circular shape may be disposed in the ceiling back 7. A lighting fixture 18 such as a fluorescent lamp is attached to the ceiling 9 of the store 1, and ventilation openings 8 A, 8 B, 8 C that guide heat generated by the lighting fixture 18 to the exhaust duct 8 are formed at intervals on the ceiling 9. ing.

  In order to exhaust (ventilate) the air in the store, a window ventilation fan 10 is attached to the upper wall surface of the window on the front side 2, and the vents 8 </ b> A, 8 </ b> B, 8 </ b> C are used to exhaust the store air to the exhaust duct 8. Are attached with ceiling ventilation fans 11A, 11B, and 11C, respectively. In order to measure the temperature at the window of the store 4 in the store 1, a window temperature measurement sensor 12 is provided, and in order to measure the outside air around the store 1, an outside air temperature measurement sensor 13 is provided. A ceiling temperature measurement sensor 14 is provided to measure the temperature of the ceiling 9 portion.

  The Building Standard Law stipulates that if the volume of air in the store is 1, then half (0.5) must be ventilated in 1 hour. For this reason, if it is a store of 500 cubic meters, the ventilation amount in 1 hour will be 250 cubic meters, and this will be about 4.17 cubic meters in 1 minute. Within the range of this standard, the present invention varies the air flow rate (ventilation amount) of each ventilation fan in accordance with the temperature conditions in the store, and discharges high-temperature air outside the store.

  Hereinafter, this method will be described. 3 (a), (b), (c), and (d) each calculation based on the relationship between the outdoor temperature, the window, the ceiling temperature, and the set temperature in the store according to the seasons of the first and second embodiments. The relationship between values is shown. 3 (a), (b), (c), and (d) show that the seasons are divided into summer, winter, and intermediate periods, and the temperature inside and outside the store during this season is measured. 10. Ventilation amount (ventilation amount) by the ceiling ventilation fans 11A, 11B, and 11C is varied. The inside 4 of the store is kept at a predetermined temperature (referred to as a set temperature, which is 26.0 ° C. in the summer, 24.0 ° C. in the intermediate period, and 20.0 ° C. in the winter). It is controlled by the harmony device 5. For this reason, as shown in FIG. 3 (a), control is performed so that cooling is performed in the summer, heating is performed in the intermediate period, and heating is performed in the winter.

  First, control based on the difference from the outside air temperature will be described. As shown in FIG. 3B, in the summer season, the outside temperature measured by the outside temperature measuring sensor 13 is 31.1 ° C., the outside temperature measured by the outside temperature measuring sensor 12 is 24.0 ° C., and the ceiling temperature is measured. The temperature near the ceiling measured by the sensor 14 is 26.3 ° C. Based on this, the difference between the window temperature and the outside air temperature is 24.0 ° C.-31.1 ° C. = − 7.1 ° C., and the difference between the ceiling temperature and the outside air temperature is 26.3 ° C.-31.1 ° C. ° C = −4.8 ° C., and the ratio between the window and the ceiling at this temperature difference is 7.1 / 11.9 = 0.60 at the window and 4.8 / 11.9 = 0.40 at the ceiling. It becomes.

  As a result, in summer, the temperature with the smaller difference is higher, and this is the load on the store. Therefore, the calculated ratio is reversed, and Fig. 3 (b) shows the ratio of the ventilation fan control window and the ventilation fan. As shown as the control ceiling ratio, the window-side ventilation fan 10 is operated with a ventilation rate of 40%, and the total of the ceiling ventilation fans 11A, 11B, and 11C is operated with a ventilation rate of 60%. In the case of the total of 11A, 11B, and 11C, the ratio is further equally divided for operation.

  In the winter and intermediate periods, the calculated values are calculated as shown in FIG. As a result, in winter (heating), since the lower value is the lower temperature, this is the load on the store, so the calculated ratio is reversed, and the ventilation fan control window is shown in FIG. As shown as the ratio and the ventilation fan control ceiling ratio, the window ventilation fan 10 is operated with an air flow rate of 52%, and the ceiling ventilation fans 11A, 11B, and 11C are operated with an air flow rate of 48%. In the intermediate period (heating), based on the calculated window-to-ceiling ratio, the window-side ventilation fan 10 is blown at 48% as shown in FIG. Operate and operate the total of ceiling ventilation fans 11A, 11B, and 11C with an air flow rate of 52%. In the case of the total of 11A, 11B, and 11C, the ratio is further equally divided for operation.

  Next, control based on the difference from the set temperature will be described. As shown in FIG. 3C, in the summer season, the set temperature is 26.0 ° C., the window temperature measured by the window temperature measurement sensor 12 is 24.0 ° C., and the temperature near the ceiling measured by the ceiling temperature measurement sensor 14. Is 26.3 ° C. Based on this, the difference between the window temperature and the set temperature is 24.0 ° C.−26.0 ° C. = − 2.0 ° C., and the difference between the ceiling temperature and the set temperature is 26.3 ° C.−26.0 ° C = 0.3 ° C. The ratio of the window and the ceiling at this temperature difference is 2.0 / 2.3 = 0.87 at the window and 0.3 / 2.3 = 0.13 at the ceiling. Become.

  As a result, in summer, the higher the temperature, the higher the temperature, and this is the load on the store, so the calculated ratio is reversed. However, if the difference from the set temperature is negative, there is no load and 0%. As shown in FIG. 3 (c), as the ventilation fan control window ratio and the ventilation fan control ceiling ratio, the window-side ventilation fan 10 is operated at 0% air flow, that is, stopped, and the ceiling ventilation fans 11A, 11B, and 11C are sent at 100%. Driving with air volume, ie, full rotation. In the case of the total of 11A, 11B, and 11C, it drive | operates by equally dividing a ratio. As a result, ventilation that satisfies the provisions of the Building Standards Act can be performed.

  In the winter and intermediate periods, the calculated values are calculated as shown in FIG. As a result, in winter (heating), giving priority to the load on the store, as shown in FIG. 3 (c) as the ventilation fan control window ratio and the ventilation fan control ceiling ratio, the window ventilation fan 10 is sent at 100%. Operate with air volume (full rotation) and operate (stop) ceiling ventilation fans 11A, 11B, and 11C with 0% air flow. As a result, ventilation that satisfies the provisions of the Building Standards Act can be performed. In the intermediate period (heating), based on the calculated window-to-ceiling ratio, the window-side ventilation fan 10 is blown at 35% as shown in FIG. 3 (c) as the ventilation fan control window ratio and the ventilation fan control ceiling ratio. It drives and the sum total of ceiling ventilation fans 11A, 11B, and 11C is operated by 65% of blast volume. In the case of the total of 11A, 11B, and 11C, the ratio is further equally divided for operation.

Next, control based on the assumed power consumption will be described. 2, for example, 5 ° C. when the outside air temperature rises from 10 ° C. to 15 ° C., as shown in the graph showing the relationship of the power consumption with respect to the outside air temperature of the in-store air conditioners of the first and second embodiments according to the present invention. And in 5 degreeC in the case of rising from 30 degreeC to 35 degreeC, even if the same temperature difference 5 degreeC, the raise amount of the power consumption of an air conditioning apparatus or a food cooling device differs. Even in the store, when the temperature rises from 18 ° C to 20 ° C and when the temperature rises from 22 ° C to 24 ° C, even if the temperature difference is 2 ° C, the power consumption of the air conditioner and food cooling equipment will increase. The amount is different. Therefore, in the present invention, each ventilation fan is operated at a ratio based on a value calculated by fitting to the relational expression between the outside air temperature and the power consumption amount, the assumed power consumption amount y = 0.116x ² −0.2047x + 4.358. By doing so, temperature unevenness in the store is eliminated, the load on the store air conditioner is suppressed, and the load on the refrigerated showcase or the freezer showcase installed in the store is suppressed.

Specific examples will be described below. As shown in FIG. 3 (d), the assumed power consumption at the window in the summer (referred to as the window assumed power consumption) and the assumed power consumption at the ceiling (referred to as the ceiling assumed power consumption) y are y = 0.116x. ^{2 -0.2047x} + 4.358 formula (x is the above the window temperature and the ceiling temperature) is a value calculated by, as shown in FIG. 3 (d), in the window 6.1 [kwh / h] And 7.0 [kwh / h] at the ceiling. And the ratio of the window side and the ceiling in this assumed power consumption is 6.1 / 13.1 = 0.47 at the window side, and 7.0 / 13.1 = 0.53 at the ceiling. Such a calculation is performed by the control unit 15 shown in the block diagram of the control device for controlling the operation of each ventilation fan according to the first and second embodiments of the present invention shown in FIG.

  In the summer season (cooling), based on the window-to-ceiling ratio in the estimated power consumption calculated in this way, the window-side ventilation fan 10 as shown in FIG. 3 (d) as the ventilation fan control window ratio and the ventilation fan control ceiling ratio. 5 is controlled by the control unit 15 shown in FIG. 5 so that the ceiling ventilation fans 11A, 11B, and 11C are operated at a blowing rate of 53%. This control flow is shown in the control flowchart of each ventilation fan of the first and second embodiments according to the present invention in FIG.

  In the above, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are operated at a ratio based on the calculated estimated power consumption. For example, various environments of the store such as the number of people entering and leaving the store The window-side ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C may be operated at a ratio corrected by including factors including conditions.

 Control of the air flow rate of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C is performed by the controller 15 by the control unit 15 so that the window temperature measurement sensor 12, the outside air temperature measurement sensor 13, and the ceiling temperature are controlled. A continuous method may be used in which the measurement value of the measurement sensor 14 is input and the air flow rate of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C is controlled based on the same calculation as described above. The measurement values of the temperature measurement sensor 13 and the ceiling temperature measurement sensor 14 are input, and based on the same calculation as described above, the control unit 15 determines the air flow rate of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C at a predetermined interval. Any of the control methods may be used.

  In this way, the ratio of the amount of exhaust through the exhaust duct 8 and the amount of exhaust through the window ventilation fan 10 is adjusted by the control unit by the ceiling ventilation fans 11A, 11B, and 11C, and the ventilation amount in the store is It becomes the ventilation amount in the state of the reference value stipulated in the Building Standard Act, the necessary ventilation amount is cleared, and the load of the air conditioner that cools and cools the inside of the store is suppressed, and further, the refrigerated showcase and / or The load of the freezer showcase can be suppressed.

  In the present invention, there are several methods for controlling the rotational speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C. One method is inverter control. The frequency by the control unit 15 depends on the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated by the control unit 15 based on the measurements by the window temperature measurement sensor 12, the outside air temperature measurement sensor 13, and the ceiling temperature measurement sensor 14. This is a method in which the rotational speed of each ventilation fan is varied from high speed to low speed by control.

  As another method, the rotational speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C is controlled in stages. According to the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated by the control unit 15 based on the measurement of the window side temperature measurement sensor 12, the outside air temperature measurement sensor 13, and the ceiling temperature measurement sensor 14, the control unit 15 In this method, the rotational speeds of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are controlled in three stages, for example, high speed, medium speed, and low speed. Furthermore, only one with a larger control ratio is set to 100%, the other is set to 0%, and only one of the ventilation fans is operated.

  The above method is the rotational speed control of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C. However, the rotation speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C is constant, and the implementation according to the present invention of FIG. As shown in the explanatory view of the configuration in which the damper device is provided on the suction port side of each ventilation fan in Examples 1 and 2, the damper devices 16 and 17A, respectively on the air suction side of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C. 17B and 17C are provided, and the opening control of the damper devices 16, 17A, 17B, and 17C can be performed instead of the air volume control of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C. In FIG. 5, the control device in this case is a damper device 16 instead of the window ventilation fan 10, a damper device 17A instead of the ceiling ventilation fan 11A, a damper device 17B instead of the ceiling ventilation fan 11B, and a ceiling ventilation fan 11C. The damper device 17C is assumed.

  Thereby, based on the measurement of the window side temperature measurement sensor 12, the outside air temperature measurement sensor 13, and the ceiling temperature measurement sensor 14, the control unit 15 performs according to the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated by the control unit 15. The opening degree of the damper devices 16, 17A, 17B, and 17C is varied. For this reason, the rotational speeds of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are constant, but the opening amounts of the damper devices 16, 17A, 17B, and 17C change. change.

  In the above description, the number of the ceiling temperature measurement sensors 14 is one, but a plurality of ceiling temperature measurement sensors 14 may be provided so as to measure the temperature of the ceiling portions at a plurality of positions with intervals. For example, when there are three ceiling ventilation fans, the ceiling temperature measurement sensor 14A is provided for the ceiling ventilation fan 11A, the ceiling temperature measurement sensor 14B is provided for the ceiling ventilation fan 11B, and the ceiling temperature measurement sensor 14C is provided for the ceiling ventilation fan 11C. Is provided.

  The control device in this case is configured as shown in the block diagram of the control device for controlling the damper devices of the first and second embodiments according to the present invention in FIG. 7, and the ceiling ventilation fan 11A is based on the detection of the ceiling temperature measurement sensor 14A. The operation is controlled by the control unit 15 in accordance with the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated as shown in FIG. The ceiling ventilation fan 11B is controlled in accordance with the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated in the same manner based on the detection of the ceiling temperature measurement sensor 14B. The ceiling ventilation fan 11C is controlled by the ceiling temperature measurement sensor. If the operation is controlled in accordance with the ventilator fan control window ratio and the ventilator fan control ceiling ratio calculated in the same manner based on the detection of 14C, the high temperature ceiling 9 can be properly ventilated. It will be a thing.

  As another control method, a plurality of ceiling temperature measurement sensors 14 are provided so as to measure the temperature of a plurality of ceiling portions at intervals, and an average value of these measured values is calculated by the control unit 15. The control unit 15 can control the ceiling ventilation fans 11A, 11B, and 11C to operate at the same number of revolutions according to the ratio between the window and the ceiling in the assumed power consumption calculated based on this.

  As described above, the ventilator in the store 4 of the present invention is configured such that the store interior 4 and the ceiling back 7 connected to the store 4 are configured as the exhaust duct 8 and attached to the ceiling 9 of the store 4 at least. 18 is provided with a vent opening that guides the heat generated in the exhaust duct 8 to the exhaust duct 8, and a window vent fan 10 attached to the upper part of the window of the store 1, and measures the outside air temperature, the window temperature, and the ceiling side temperature, Based on the determination, the air blow amount (discharge amount) by the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C is controlled.

  In the above, the sensors for measuring the temperature in the store 4 of the store 1 are at least the window temperature measuring sensor 12 and the ceiling temperature measuring sensor 14, but are not limited thereto, and in addition to this, the temperature of other parts of the store 4 For example, a sensor for measuring the temperature in the vicinity of the doorway may be provided.

  In the above, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are provided, and the sensors for measuring the temperature in the store 4 are at least the window temperature measurement sensor 12 and the ceiling temperature measurement sensor 14, but the control is simplified. In order to reduce the cost, a sensor for measuring the temperature in the store 4 is provided in any place in the store 4, and the ventilation openings 8A, 8B, 8C are not provided with the ceiling ventilation fans 11A, 11B, 11C. It is possible to use only a ventilation opening, and exhaust the air in the store 4 only by the window ventilation fan 10.

  Like the said Example, the ventilator in the store of this invention comprised the interior back of the store 4 and the ceiling back connected to this store 4 as the exhaust duct 8, and was attached to the ceiling 9 of the store 4 at least. 18 is provided with ventilation openings 8A, 8B, and 8C for guiding heat generation to the exhaust duct 8 and a window ventilation fan 10 attached to the upper part of the window of the store 1, and is determined by the control unit 15 using at least room temperature in the store 4. On the basis of the above, the ratio between the exhaust amount through the exhaust duct 8 and the exhaust amount through the window ventilation fan 10 is adjusted.

  In the present invention, as described above, in order to clear the necessary ventilation amount at a convenience store and the like, and to eliminate the uneven temperature and humidity in the store 1, a ventilation fan is installed at an appropriate place in the store 4 ( In the embodiment, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are installed). The temperature unevenness in one room is eliminated, the load of the air conditioner 5 is suppressed, and the refrigerated show installed in the store 4 The load on the case 6 and / or the frozen showcase 6 can be suppressed. Furthermore, if the method is based on the estimated power consumption, even if the temperature difference between the indoor temperature and the outdoor temperature is the same temperature difference as shown in FIG. By controlling the ventilator so that the temperature unevenness in the store 4 is eliminated, the load of the air conditioner 5 in the store is controlled by the ventilation of the air in the store, and the load in the store 4 is installed. The load of the refrigerated showcase 6 and / or the frozen showcase 6 can be suppressed.

  Further, the present invention can suppress the load on the in-store air conditioner 5 and reduce the load on the refrigerated showcase 6 and / or the refrigerated showcase 6 by operating the ventilation rate as stipulated in the Building Standard Law for such a store. Suppression can be performed and an energy saving effect can be achieved.

  In FIG. 3 (a), (b), (c), (d), only one value is shown for each of summer, middle and winter, but the outside air temperature, set temperature, window temperature, According to the value measured for the ceiling temperature, the ventilation fan control window ratio and the ventilation fan control ceiling ratio for each time are calculated by the same calculation as described above, and thereby, the window-side ventilation fan 10 for each month, each day, and each time, and If the ceiling ventilation fans 11A, 11B, and 11C are controlled, fine control can be performed.

  In Example 1, the window-side ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C were operated with the difference from the outside air temperature, the difference from the set temperature, and the ratio based on the calculated assumed power consumption. As an element for determining the operation ratio of the ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, there is a method that uses a thermal load instead of the assumed power consumption. Example 2 is a system using this heat load, and will be described below.

  The temperature sensor is provided with a ceiling temperature measurement sensor for measuring the temperature of the ceiling 7 in addition to the window temperature measurement sensor 12, the outside temperature measurement sensor 13, and the ceiling temperature measurement sensor 14 described above. The heat load at the window is calculated by the following formula. Then, in the same manner as shown in FIG. 3 (d), the ventilation fan control window ratio and the ventilation fan control ceiling ratio are calculated by this heat load, thereby operating the window-side ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C. To do.

The calculation method for the heat load is performed by the following equation.
About "Ceiling heat load":
Ceiling conduction heat [kw] = heat transmissivity × ceiling area [m ² ] × (ceiling back temperature [° C.] − In-store temperature [° C.]) / 1000
Ceiling heat load [kw] = ceiling conduction heat [kw] + heat generation amount (lighting load) [kw]
About “Heat Load at the Window”:
Radiant heat [kw] = solar radiation acquisition rate x window area [m ² ] x solar radiation by window [kw / m ² ]
Window conduction heat [kw] = Heat transmissivity × Window area [m ² ] × (Outside air temperature [° C.] − In-store temperature [° C.]
) / 1000
Heat load at the window [kw] = radiant heat [kw] + window conduction heat [kw]
In addition, the calorific value (lighting load) [kw] of lighting uses a measured value of power, or is calculated by rated power of lighting fixtures × number of lighting fixtures.

  FIG. 8 shows one measurement data such as the temperature and lighting load of each part in the summer, middle and winter seasons in the store interior and exterior environments of the first and second embodiments according to the present invention. Moreover, in FIG. 9, the ventilation fan control window ratio and the ventilation fan control ceiling ratio which were calculated according to the heat load of Example 1, 2 which concerns on this invention are shown. FIG. 10 shows a relational expression between the window-side temperature and the window solar radiation amount in the summer when the store windows of the first and second embodiments according to the present invention face the northeast. x is the window temperature described above.

  The value calculated by the formula shown in FIG. 10 is used as the value of the amount of solar radiation. As shown in FIG. 10, using the calculated values for each time, the summer ventilation fan control window ratio and the ventilation fan control ceiling ratio shown in FIG. 9 are calculated for each time, so that each month, every day, every time If the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C are controlled, fine control can be performed.

  FIG. 11: is a side view which shows schematic structure of the convenience store 1 provided with the ventilator in the shop of Example 3 which concerns on this invention, and the convenience store 1 is the glass side on the front side 2, the back side 3 and The left and right sides are composed of heat insulating walls. On the front side 2, although not shown, an entrance / exit (not shown) is formed by a glass door. In addition, an air conditioner 5 for performing air conditioning in the store 4 is installed outside the store on the back side 3, and the store 4 is maintained at a predetermined temperature (referred to as a set temperature). The air conditioner 5 is controlled to be cooled or heated. In the store 4, a refrigerated showcase and / or a frozen showcase (hereinafter referred to as a showcase 6) for storing sold foods are installed, and a display shelf (not shown) for sold products is further installed.

  In this invention, it is the structure which utilizes the ceiling back 7 formed in the upper part of the ceiling 9 of the shop 1 as the exhaust duct 8 (it is also called the ventilation duct 8). The exhaust duct 8 may be configured by the ceiling back 7 itself, but the exhaust duct 8 specially formed in a shape such as a rectangular cross section or a circular shape may be disposed in the ceiling back 7. A lighting fixture 18 such as a fluorescent lamp is attached to the ceiling 9 of the store 1, and ventilation openings 8 A, 8 B, 8 C that guide heat generated by the lighting fixture 18 to the exhaust duct 8 are formed at intervals on the ceiling 9. ing.

In order to exhaust (ventilate) the air in the store, a window ventilation fan 10 is attached to the wall surface of the upper side of the window on the front side 2, an exhaust duct is disposed near the showcase on the rear side 3, and a ventilation fan 19 is attached to the lower part of the showcase. Ceiling ventilation fans 11A, 11B, and 11C are attached to the ventilation openings 8A, 8B, and 8C, respectively, in order to discharge store air to the exhaust duct 8. In order to measure the temperature near the window of the store 4 in the store 1, a window temperature measurement sensor 12 is provided, and in order to measure the temperature of the ceiling 9 portion of the store 4 in the store 1, a ceiling temperature measurement sensor 14 is provided.
In addition to FIG. 1, FIG. 11 includes a showcase vicinity temperature measurement sensor 20 for measuring the temperature near the showcase 6 in the store 4 of the store 1.

  The Building Standard Law defines the amount of ventilation that must be ventilated in one hour. For example, if the air volume of the store interior volume is 1, half (0.5) must be ventilated in one hour. For this reason, if it is a store of 500 cubic meters, the ventilation amount in 1 hour will be 250 cubic meters, and this will be about 4.17 cubic meters in 1 minute. Within the range of this standard, the present invention varies the air flow rate (ventilation amount) of each ventilation fan in accordance with the temperature conditions in the store, so that air having a high temperature during cooling and air having a low temperature during heating are used. Is discharged outside the store.

  Hereinafter, this method will be described. FIGS. 12-1 (summer season) and 2 (winter season) show the temperature near the window, ceiling, and showcase and the set temperature of the air conditioner for each season in the store of the third embodiment according to the present invention. 12-1 and 2, by measuring the temperature in the store according to the season and obtaining the set temperature of the air conditioner, the ventilation fan 10 by the window, the ceiling ventilation fans 11 A, 11 B, 11 C, and the ventilation fan 19 at the bottom of the showcase Ventilation volume (ventilation volume) is variable. The in-store 4 is controlled by the air conditioner 5 so as to be maintained at a set temperature of the air conditioner (this is referred to as a set temperature, which is 20 ° C. in the summer and 18 ° C. in the winter in the embodiment). For this reason, as shown in FIG. 12A, it is assumed that cooling is controlled in the summer and heating is performed in the winter.

  The sending amount control based on the difference from the set temperature will be described. As shown in FIG. 12A, in the summer, the set temperature of the air conditioner is 20 ° C., the window temperature measured by the window temperature measurement sensor 12 is 24 ° C., and the temperature near the ceiling measured by the ceiling temperature measurement sensor 14 is The temperature near the showcase measured by the temperature sensor 26.3 ° C and near the showcase 16 is 16 ° C. Furthermore, the air conditioning mode is cooling. Based on this, the difference between the window temperature and the set temperature is 4 ° C., the difference between the temperature near the ceiling and the set temperature is 6.3 ° C., and the difference between the vicinity of the showcase and the set temperature is −4 ° C.

  As a result, in the summer season (cooling mode), the air near the ceiling and the window near the window where the difference is positive is a load in the store. Therefore, exhaust is performed by operating the ceiling ventilation fans 11A, 11B, and 11C and the window ventilation fan 10. . Further, it is assumed that the ventilation fan 19 at the lower part of the showcase in which the difference is in the negative direction is not operated. The ratio of the respective air flow rates is the difference AT1 between the window temperature and the set temperature AT1: the difference between the ceiling vicinity temperature and the set temperature AT2: the difference between the showcase vicinity temperature and the set temperature AT3 = 4: 6.3: 0. Since the ventilation required per minute is about 4.17 cubic meters, this is assumed to be 100% and apportioned in proportion. Specifically, the vehicle is operated with a window ventilation fan amount of 39%, a ceiling ventilation fan amount of 61%, and a ventilation fan amount of 0% at the bottom of the showcase.

  Also in the winter season, as described above, each ratio is calculated as shown in FIG. As a result, in the winter season, the ventilation fan 19 and the window ventilation fan 10 at the lower part of the showcase whose difference is in the negative direction are operated. The set temperature of the air conditioner is 20 ° C., the window temperature measured by the window temperature measurement sensor 12 is 18.8 ° C., the temperature near the ceiling measured by the ceiling temperature measurement sensor 14 is 20.5 ° C., and the temperature measurement sensor 20 near the showcase. The temperature near the showcase measured by is set to 16 ° C. The air conditioning mode is heating. Based on this, the difference between the window temperature and the set temperature is -1.2 ° C, the difference between the temperature near the ceiling and the set temperature is 0.5 ° C, and the difference between the vicinity of the showcase and the set temperature is -4 ° C.

As a result, in winter (heating mode), the air near the showcase becomes a load in the store when the difference is in the negative direction. Therefore, the window-side ventilation fan 10 and the ventilation fan 19 at the bottom of the showcase are operated. Exhaust. The ratio of the respective air flow rates is the difference AT1 between the window temperature and the set temperature AT1: the difference between the temperature near the ceiling and the set temperature AT2: the difference between the temperature near the showcase and the set temperature AT3 = 1.2: 0: 4 . Specifically, the vehicle is operated with a window ventilation fan amount of 23%, a ceiling ventilation fan amount of 0%, and a ventilation fan amount of 77% at the bottom of the showcase.
Such a calculation is performed by the control unit 15 shown in the block diagram of the control device for controlling the operation of each ventilation fan according to the third embodiment of the present invention shown in FIG.

  In the summer, the number of revolutions is controlled by the control unit 15 shown in FIG. 13 based on the ratio of the window, the ceiling, and the vicinity of the showcase. This control flow is shown in the control flowchart of each ventilation fan of the third embodiment according to the present invention in FIG.

  Control of the air flow rate of the ventilating fan 10 at the window, the ceiling ventilating fans 11A, 11B, 11C, and the ventilating fan 19 at the lower part of the showcase is performed continuously by the control unit 15 by the window temperature measuring sensor 12, Based on the calculation similar to the above based on the measured values of the ceiling temperature measurement sensor 14 and the showcase vicinity temperature measurement sensor 20 and the set temperature of the air conditioner, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B and 11C, the ventilation fan at the lower part of the showcase 19 may be a continuous method for controlling the air flow rate, and based on the same calculation as described above from the measured values of the window temperature measuring sensor 12, the ceiling temperature measuring sensor 14, and the showcase vicinity temperature measuring sensor 20 and the set temperature of the air conditioner. The control unit 15 has a predetermined interval, and the window-side ventilation fan 10 and the ceiling ventilation fans 11A, 11B, 11C, It may be any method of controlling the air volume of the lower portion of the exhaust fan 19.

  In this way, the ratio of the amount of exhaust through the exhaust duct 8 by the ceiling ventilation fans 11A, 11B and 11C, the amount of exhaust through the window ventilation fan 10 and the amount of exhaust through the ventilation fan 19 at the bottom of the showcase. Is controlled by the control unit, clears the necessary ventilation, and does not exhaust the air in the area that is at the set temperature, that is, the appropriate temperature, but exhausts the air in the area that is different from the set temperature The load on the air conditioner that cools and cools the inside is suppressed, and further, the load on the refrigerated showcase and / or the freezer showcase can be suppressed.

  In the case of the present invention, there are several methods for controlling the rotational speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, and the ventilation fan 19 at the lower part of the showcase. One method is inverter control. is there. The ventilation fan control window ratio, the ventilation fan control ceiling ratio, and the ventilation fan calculated by the control unit 15 based on the measurement by the window temperature measurement sensor 12, the ceiling temperature measurement sensor 14, the showcase vicinity temperature measurement sensor 20, and the set temperature of the air conditioner. According to the control showcase vicinity ratio, the rotation speed of each ventilation fan is varied from high speed rotation to low speed rotation by frequency control by the control unit 15.

  Further, as another method, there is a step control of the rotational speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, 11C and the ventilation fan 19 at the lower part of the showcase. That is, based on the measurements of the window temperature measuring sensor 12, the ceiling temperature measuring sensor 14, and the showcase vicinity temperature measuring sensor 20, the control unit 15 calculates the ventilation fan control window ratio, the ventilation fan control ceiling ratio, and the ventilation fan control showcase vicinity ratio. Accordingly, the controller 15 controls the rotation speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, and the ventilation fan 19 at the lower part of the showcase in three stages, for example, high speed, medium speed, and low speed. . Furthermore, only one with a larger control ratio is set to 100%, the other is set to 0%, and only one of the ventilation fans is operated.

  The above-mentioned method is the rotational speed control of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C and the lower ventilation fan 19 of the showcase, but the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, and the lower ventilation fan of the showcase. As shown in FIG. 15, the damper devices 16, 17A, 17B, and 17C are provided on the air suction side of the window-side ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, and the ventilation fan 19 at the bottom of the showcase, respectively. , 21 is provided, and the opening degree control of the damper devices 16, 17A, 17B, 17C, 21 is used instead of the air volume control of the ventilation fan 10 near the window, the ceiling ventilation fans 11A, 11B, 11C, and the ventilation fan 19 below the showcase. You can also. In FIG. 15, the control device in this case is a damper device 16 instead of the window ventilation fan 10, a damper device 17A instead of the ceiling ventilation fan 11A, a damper device 17B instead of the ceiling ventilation fan 11B, and a ceiling ventilation fan 11C. A damper device 17C is used, and a damper device 21 is used instead of the ventilation fan 19 at the bottom of the showcase.

  Accordingly, the ventilation fan control window ratio and the ventilation fan control ceiling ratio calculated by the control unit 15 based on the measurement by the window side temperature measurement sensor 12, the ceiling temperature measurement sensor 14, the near-showcase temperature measurement sensor 20 and the set temperature of the air conditioner, and The opening degree of the damper devices 16, 17A, 17B, 17C, and 21 is varied by the control unit 15 in accordance with the vicinity of the ventilation fan control showcase. Therefore, the rotational speed of the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, 11C and the ventilation fan 19 at the lower part of the showcase is constant, but the opening degree of the damper devices 16, 17A, 17B, 17C, 21 changes. The amount of air discharged from that part changes accordingly.

  In the above description, the number of the ceiling temperature measurement sensors 14 is one, but a plurality of ceiling temperature measurement sensors 14 may be provided so as to measure the temperature of the ceiling portions at a plurality of positions with intervals. For example, when there are three ceiling ventilation fans, the ceiling temperature measurement sensor 14A is provided for the ceiling ventilation fan 11A, the ceiling temperature measurement sensor 14B is provided for the ceiling ventilation fan 11B, and the ceiling temperature measurement sensor 14C is provided for the ceiling ventilation fan 11C. Is provided.

  The control device in this case is configured as shown in FIG. 16, and the ceiling ventilation fan 11A is based on the detection of the ceiling temperature measurement sensor 14A, and the ventilation fan control window ratio, the ventilation fan control ceiling ratio, and the ventilation fan control showcase calculated from FIG. The operation is controlled by the control unit 15 according to the vicinity ratio. Further, the ceiling ventilation fan 11B is controlled in operation according to the ventilation fan control window ratio, the ventilation fan control ceiling ratio, and the ventilation fan control showcase vicinity ratio calculated in the same manner based on the detection of the ceiling temperature measurement sensor 14B. If the operation is controlled according to the ventilation fan control window ratio, the ventilation fan control ceiling ratio, and the ventilation fan control showcase vicinity ratio calculated in the same manner based on the detection of the ceiling temperature measurement sensor 14C, It is possible to properly ventilate the high ceiling 9 part.

  As another control method, a plurality of ceiling temperature measurement sensors 14 are provided so as to measure the temperature of a plurality of ceiling portions at intervals, and an average value of these measured values is calculated by the control unit 15. The control unit 15 can control the ceiling ventilation fans 11A, 11B, and 11C to operate at the same number of revolutions according to the ratio between the window and the ceiling in the assumed power consumption calculated based on this.

  As described above, the ventilator in the store 4 of the present invention is configured such that the store interior 4 and the ceiling back 7 connected to the store 4 are configured as the exhaust duct 8 and attached to the ceiling 9 of the store 4 at least. 18 is provided with a ventilation opening for guiding heat generation to the exhaust duct 8, a window ventilation fan 10 attached to the upper part of the window of the store 1, and a ventilation fan 19 of the lower part of the showcase attached in the vicinity of the showcase, The temperature on the ceiling side and the temperature in the vicinity of the showcase are measured, the setting mode of the air conditioner is obtained, and based on the judgment by the control unit 15, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, 11C, the ventilation fan 19 at the lower part of the showcase The blowing amount (discharge amount) is controlled.

  In the above, the sensors for measuring the temperature in the store 4 of the store 1 are at least the window-side temperature measurement sensor 12, the ceiling temperature measurement sensor 14, and the showcase vicinity temperature measurement sensor 20, but are not limited thereto. You may provide the sensor etc. which measure the temperature of the other part in the shop 4, for example, the temperature of the vicinity of an entrance / exit.

  In the above, the window ventilation fan 10 and the ceiling ventilation fans 11A, 11B, and 11C, and the near-showcase ventilation fan 10 are provided, and the sensors for measuring the temperature in the store 4 are at least the window temperature measurement sensor 12, the ceiling temperature measurement sensor 14, and the show. Although it is the case vicinity temperature measurement sensor 20, in order to simplify the control and reduce the cost, a sensor for measuring the temperature in the store 4 is provided at any location in the store 4 and the vents 8A, 8B, The ceiling ventilation fans 11A, 11B, and 11C are not provided in 8C, but are simply ventilated, and the air in the store 4 can be exhausted by the window ventilation fan 10 and the ventilation fan 19 at the lower part of the showcase or only by the window ventilation fan 10.

  Like the said Example, the ventilator in the store of this invention comprised the interior back of the store 4 and the ceiling back connected to this store 4 as the exhaust duct 8, and was attached to the ceiling 9 of the store 4 at least. 18 is provided with ventilation openings 8A, 8B, and 8C for guiding heat generation to the exhaust duct 8, and a window ventilation fan 10 attached to the upper part of the window of the store 1 and a showcase vicinity ventilation fan 19 attached to the vicinity of the showcase of the shop 1. And the ratio of the amount of exhaust through the exhaust duct 8 and the amount of exhaust through the window ventilation fan 10 and the ventilation fan 19 at the bottom of the showcase based on the determination by the control unit 15 using at least the room temperature in the store 4 To be adjusted.

  In the present invention, as described above, a ventilation fan is installed at an appropriate place in the store 4 in order to clear the necessary ventilation amount in a convenience store and the like, and to eliminate temperature unevenness in the store 1 (in the embodiment, By installing the ventilation fan 10 at the window, the ceiling ventilation fans 11A, 11B, and 11C, and the ventilation fan 19 at the bottom of the showcase), the ventilation fan is controlled so as to obtain an appropriate air flow rate in consideration of the temperature difference from the set temperature. The load on the machine 5 can be suppressed, and the load on the refrigerated showcase 6 and / or the frozen showcase 6 installed in the store 4 can be suppressed.

  Further, the present invention suppresses the load on the in-store air conditioner 5 and the load on the refrigerated showcase 6 and / or the freezer showcase 6 by operating the ventilation rate as defined in the Building Standard Law for such a store. Thus, an energy saving effect can be achieved.

  Figures 12-1 and 12-2 show only one value for each of summer and winter, but depending on the values measured for the set temperature, window temperature, ceiling temperature, and showcase temperature at each time, Ventilation fan control window ratio, ventilation fan control ceiling ratio and ventilation fan control showcase vicinity ratio are calculated, thereby, window ventilation fan 10 and ceiling ventilation fans 11A, 11B, 11C, showcases every month, every day, every time If the ventilation fan 19 below is controlled, fine control can be performed.

  Further, humidity and enthalpy may be used instead of temperature.

  FIGS. 17 and 18 are diagrams showing temperature fluctuations in the store during the summer and winter seasons in the store interior / exterior environment according to the third embodiment of the present invention.

  In the third embodiment, the air ventilated by the ventilation fan 19 at the lower part of the showcase attached to the rear side 3 is supplied and exhausted by the air conditioner 5 provided outside the store. A rear exhaust duct 30 is provided on the rear side 3 as shown in a side view showing a schematic configuration of a convenience store equipped with a ventilator in the store according to the fourth embodiment, and connected to the exhaust duct 8 provided on the ceiling 7. Thus, a configuration that can supply and exhaust air may be used.

  At that time, when a damper (not shown) is provided in the rear exhaust duct 30 and the ceiling ventilation fan 11 is operated in the store ventilation and the ventilation fan 19 in the lower part of the showcase is not operated, the air flowing through the exhaust duct 8 is rear exhaust duct 30. , And is prevented from returning to the store from the ventilation fan 19 at the bottom of the showcase 6.

  In addition, a damper (not shown) is provided in the exhaust duct 8, and when the ventilation fan 19 at the lower part of the showcase is operated in the store ventilation and the ceiling ventilation fan 11 is not operated, air to be exhausted outside the store passes through the exhaust duct 8. , To prevent returning to the store.

  The in-store ventilator according to the present invention is not limited to the configuration shown in the above embodiment, but can be applied to various forms, and includes various forms within the technical scope of the present invention. .

DESCRIPTION OF SYMBOLS 1 ... Convenience store 2 ... Front side 3 ... Back side 4 ... Inside the store 5 ... Air conditioning device 6 ... Showcase 7 ··· Ceiling 8 ··· Exhaust duct 9 ··· Ceiling 10 ··· Window ventilation fan 11A, 11B, 11C ··· Ceiling ventilation fan 12 ··· Window temperature measurement sensor 13 ··· Outside air temperature sensor 14 ··· Ceiling temperature sensor 15 ··· Controller 16 ··· Damper device 17A, 17B, 17C for window ventilation fan · · · Damper device for ceiling ventilation fan 18 .... Lighting equipment

Claims (5)

  The back of the ceiling connected to the inside of the store is configured as an exhaust duct, and at least the ceiling in the store has a vent opening leading to the exhaust duct, and a ventilation fan attached to the upper part of the store window, and at least room temperature in the store A ventilating apparatus in a store, wherein a ratio between an exhaust amount through the exhaust duct and an exhaust amount through the ventilating fan is adjusted based on a determination using the air duct.   The back of the ceiling connected to the inside of the store is configured as an exhaust duct, and has at least a ventilating hole leading to the exhaust duct on the ceiling in the store, and a window-side ventilation fan attached to a wall surface at the top of the store window, And a ceiling ventilation fan attached to each, wherein the ratio of the exhaust amount by the ceiling ventilation fan and the exhaust amount by the window ventilation fan is adjusted based on a determination using at least room temperature in the store. Ventilation equipment.   The back of the ceiling connected to the inside of the store is configured as an exhaust duct, and at least a ventilation port that leads to the exhaust duct on the ceiling in the store and a ventilation port that leads to the exhaust duct outside the store also in the vicinity of the showcase installed in the store And a ventilator attached to the upper part of the window of the store, the ratio of the exhaust amount through the exhaust duct and the exhaust amount through the ventilator based on the determination using at least room temperature in the store In-store ventilator characterized by adjusting.   The back of the ceiling connected to the inside of the store is configured as an exhaust duct, and at least a plurality of vents leading to the exhaust duct on the ceiling in the store and a portion near the showcase installed in the store are also led to the exhaust duct outside the store A ventilation vent and a window ventilation fan attached to the upper wall of the store window, and based on the determination using at least room temperature in the store, the exhaust amount by the ceiling ventilation fan and the exhaust amount by the near-showcase ventilation fan The in-store ventilator characterized by adjusting the ratio of the exhaust amount by the window ventilation fan.   5. The in-store ventilator according to claim 1, wherein the determination includes at least the temperature near the window, the temperature on the ceiling side, the temperature near the showcase, the set temperature of the air conditioner, or the outside air temperature.