Kitchen air-conditioning system

Abstract

To maintain an excellent thermal environment around a cooking appliance while avoiding deterioration of air quality due to insufficient ventilation both around the cooking appliance and in the entire kitchen room, while employing a system configuration that is advantageous and simple in terms of appliance installation space and cost, in a kitchen air-conditioning system.SOLUTION: As a non-temperature-controlled outside air supply port, an exhaust hood outer peripheral outside air supply port 33 arranged on an outer peripheral part of an exhaust hood 14 is provided, and as a temperature-controlled outside air supply port, an entire kitchen room outside air supply port 42 arranged at a location away from the exhaust hood 14 is provided.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a kitchen air conditioning system for air conditioning a kitchen room.

Background Art

[0002] There is known a kitchen air conditioning system including an exhaust system that extracts indoor air from a kitchen room through an exhaust hood above a cooking appliance installed in the kitchen room and exhausts the indoor air outdoors, and an outside air supply system that takes in outside air from outdoors and supplies the outside air to the kitchen room through an air supply port (for example, see Patent Document 1). The kitchen air conditioning system described in Patent Document 1 (for example, see FIG. 2) has a temperature control unit (6) capable of temperature-adjusting outside air in the outside air supply system, and a non-temperature-controlled outside air supply path (8b) that supplies outside air that has not passed through the temperature control unit (6) to the kitchen room (9) as non-temperature-controlled outside air through a non-temperature-controlled outside air supply port (4), and a temperature-controlled outside air supply path (8c) that supplies outside air that has passed through the temperature control unit (6) to the kitchen room (9) as temperature-controlled outside air through a temperature-controlled outside air supply port (5). Further, in the kitchen system described in Patent Document 1, since both the non-temperature-controlled outside air supply port (4) and the temperature-controlled outside air supply port (5) are arranged on the outer peripheral portion of the exhaust hood (2), it is possible to maintain a good thermal environment while surely performing ventilation around the cooking appliance.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the kitchen air conditioning system described in Patent Document 1, for example, when the exhaust air volume from the exhaust hood during the operation of the cooking equipment is relatively large, most of the temperature-controlled outside air supplied from the temperature-controlled outside air supply port arranged on the outer peripheral part of the exhaust hood is exhausted directly from the direct exhaust hood almost without reaching the entire kitchen room. Therefore, there are concerns about the deterioration of air quality due to insufficient ventilation in the entire kitchen room and an increase in the energy consumption required for temperature control. In addition, in order to solve such problems, it is conceivable to add another device for air conditioning and ventilation of the entire kitchen room. However, in that case, problems such as difficulty in securing installation space due to the enlargement of the system, complication of the system configuration, and cost increase will occur.

[0005] In view of this actual situation, the main problem of the present invention is to provide a technology that can maintain a good thermal environment around the cooking equipment while avoiding the deterioration of air quality due to insufficient ventilation in both the periphery of the cooking equipment and the entire kitchen room, while adopting an advantageous and simple system configuration from the viewpoints of equipment installation space and cost in a kitchen air conditioning system.

Means for Solving the Problems

[0006] The first characteristic configuration of the present invention includes an exhaust system that exhausts indoor air taken out from the kitchen room to the outside through an exhaust hood above the cooking equipment installed in the kitchen room, and an outside air supply system that supplies outside air taken in from the outside through an air supply port to the kitchen room. The outside air supply system has a temperature control unit capable of temperature-controlling outside air, and a non-temperature-controlled outside air supply path that supplies non-temperature-controlled outside air, which is outside air that has not passed through the temperature control unit, to the kitchen room through a non-temperature-controlled outside air supply port, and a temperature-controlled outside air supply path that supplies temperature-controlled outside air, which is outside air that has passed through the temperature control unit, to the kitchen room through a temperature-controlled outside air supply port. It is a kitchen air conditioning system having: As the non-temperature-controlled outside air supply port, it includes an exhaust hood outer peripheral part outside air supply port arranged on the outer peripheral part of the exhaust hood. As the temperature-controlled outside air supply port, it is characterized in that it includes an entire kitchen room outside air supply port arranged at a location away from the exhaust hood.

[0007] According to this configuration, around the cooking equipment, indoor air is taken out and exhausted from the exhaust hood above it. At the same time, non-conditioned outside air is supplied from the outside air supply opening on the outer periphery of the exhaust hood through the non-conditioned outside air supply path. Therefore, an air flow of non-conditioned outside air from the outside air supply opening on the outer periphery of the exhaust hood toward the exhaust hood is surely formed. And, due to the air flow of non-conditioned outside air thus formed, the exhaust heat generated by the cooking equipment is surely induced to the exhaust hood and discharged outdoors without diffusing throughout the kitchen room, suppressing an increase in the energy consumption required for temperature control of the entire kitchen room due to the diffusion of exhaust heat. Further, around the cooking equipment, since non-conditioned outside air is directly supplied from the outside air supply opening on the outer periphery of the exhaust hood, the supply of oxygen is effectively performed. And, since the exhaust is directly performed by the inner exhaust hood, the removal of exhaust heat, odors, moisture, etc. generated by the cooking equipment is effectively performed, thus avoiding deterioration of air quality due to insufficient ventilation.

[0008] On the other hand, in the entire kitchen room, since conditioned outside air appropriately temperature-controlled by the temperature control unit is supplied from the outside air supply opening for the entire kitchen room arranged at a location away from the exhaust hood, ventilation and air conditioning in the entire kitchen room can be performed well. Further, an air flow of the conditioned outside air from the outside air supply opening for the entire kitchen room arranged at a location away from the exhaust hood toward the exhaust hood is formed. And, due to the air flow of the conditioned outside air thus formed, while improving the thermal environment around the cooking equipment, the diffusion of exhaust heat, odors, moisture, etc. generated by the cooking equipment throughout the kitchen room can be further suppressed.

[0009] Therefore, according to the present invention, in a kitchen air conditioning system, while adopting an advantageous and simple system configuration from the viewpoints of equipment installation space and cost, it is possible to provide a technology capable of maintaining a good thermal environment around the cooking equipment while avoiding deterioration of air quality due to insufficient ventilation in both the area around the cooking equipment and the entire kitchen room.

[0010] The second characteristic configuration of the present invention is that the opening degree of a damper for non-temperature-controlled outside air, which can adjust the supply air volume of the non-temperature-controlled outside air from the outside air supply port on the outer peripheral part of the exhaust hood to the kitchen room, is controlled according to the operating state of the cooking equipment. The non-temperature-controlled outside air supply air volume control means, The opening degree of a damper for post-temperature-controlled outside air, which can adjust the supply air volume of the post-temperature-controlled outside air from the outside air supply port for the entire kitchen room to the kitchen room, is controlled so that the supply air volume of the post-temperature-controlled outside air is maintained at a predetermined target outside air supply air volume. The post-temperature-controlled outside air supply air volume control means, is provided in that respect.

[0011] According to this configuration, even when the supply air volume of the non-temperature-controlled outside air from the outside air supply port on the outer peripheral part of the exhaust hood to the kitchen room changes according to the operating state of the cooking equipment by controlling the opening degree of the damper for non-temperature-controlled outside air of the non-temperature-controlled outside air supply air volume control means, by controlling the opening degree of the damper for post-temperature-controlled outside air of the post-temperature-controlled outside air supply air volume control means, the supply air volume of the post-temperature-controlled outside air from the outside air supply port for the entire kitchen room arranged at a location away from the exhaust hood to the entire kitchen room can be maintained at, for example, the target outside air supply air volume for maintaining the air quality of the entire kitchen room at an appropriate level.

[0012] The third characteristic configuration of the present invention is that it is provided with temperature control unit control means for controlling the temperature control unit so that the temperature of the kitchen room is maintained at a predetermined target indoor temperature.

[0013] According to this configuration, when the supply air volume of the post-temperature-controlled outside air from the outside air supply port for the entire kitchen room to the entire kitchen room is maintained at the target outside air supply air volume by controlling the opening degree of the damper for post-temperature-controlled outside air of the post-temperature-controlled outside air supply air volume control means, by controlling the temperature control unit so that the temperature of the kitchen room is maintained at a predetermined target indoor temperature by the temperature control unit control means, the thermal environment of the entire kitchen room can be maintained at an appropriate level.

[0014] The fourth characteristic configuration of the present invention is that, as the non-temperature-controlled outside air supply port, separately from the outside air supply port on the outer peripheral part of the exhaust hood, it is provided with a side outside air supply port that blows non-temperature-controlled outside air from the side toward the cooking equipment.

[0015] For example, in winter, the relatively low-temperature unconditioned outside air blown out from the outside air supply port on the outer periphery of the exhaust hood causes the temperature of the housing of the exhaust hood to decrease. When the high-temperature and high-humidity indoor air generated around the cooking equipment contacts the low-temperature housing, condensation may occur, which may cause problems. Therefore, according to this configuration, the blowing of the unconditioned outside air from the outside air supply port on the outer periphery of the exhaust hood is stopped to prevent the temperature of the housing of the exhaust hood from decreasing and avoid the occurrence of condensation in the exhaust hood. Instead, by blowing the unconditioned outside air from the side outside air supply port, while suppressing an increase in the energy consumption required for temperature control of the entire kitchen room due to the diffusion of exhaust heat, it is possible to avoid deterioration of the air quality due to insufficient ventilation around the cooking equipment.

Brief Description of the Drawings

[0016]

Figure 1

Embodiments for Carrying Out the Invention

[0017] Embodiments of the present invention will be described with reference to the drawings. The kitchen air conditioning system (hereinafter referred to as "this air conditioning system") of this embodiment shown in FIG. 1 is configured as a system for ventilating the kitchen room R in which the cooking equipment 1 is installed.

[0018] The cooking equipment 1 is a stove or the like for cooking, and exhaust heat H, odors, moisture, etc. are released around it. Although details will be described later, an exhaust hood 14 is installed above the cooking equipment 1, and the indoor air RA including the exhaust heat H etc. taken into the exhaust hood 14 is exhausted to the outside O through the exhaust port 15 provided in the exhaust hood 14. In addition, in this embodiment, two cooking equipment 1 are installed in the kitchen room R, and an exhaust hood 14 is installed for each of the two cooking equipment 1. In the following description, among the two cooking equipment 1, the one installed closer to the center of the kitchen room R may be referred to as the first cooking equipment 1A, and the one installed closer to the wall may be referred to as the second cooking equipment 1B.

[0019] This air conditioning system includes an exhaust system 10 that exhausts the indoor air RA of the kitchen room R to the outdoors O, and an outdoor air supply system 20 that supplies the outdoor air OA taken in from the outdoors O to the kitchen room R. The exhaust system 10 includes a main exhaust duct 12 in which an exhaust fan 11 is installed and that leads to the outdoors O, and a branch exhaust duct 13 that branches from the main exhaust duct 12 and leads to an exhaust port 15 that opens into the kitchen room R. The exhaust port 15 is provided inside an exhaust hood 14 above the heating and cooking equipment 1 installed in the kitchen room R. That is, the exhaust system 10 is configured such that, by the operation of the exhaust fan 11, the indoor air RA of the kitchen room R is taken out into the branch exhaust duct 13 through the exhaust port 15 of the exhaust hood 14 above the heating and cooking equipment 1 installed in the kitchen room R, and the taken-out indoor air RA is exhausted as exhaust EA to the outdoors O through the main exhaust duct 12.

[0020] The outdoor air supply system 20 includes a main outdoor air supply duct 22 in which an outdoor air supply fan 21 is installed and that leads to the outdoors O, and branch outdoor air supply ducts 31, 35, 40 that branch from the main outdoor air supply duct 22 and lead to air supply ports 33, 37, 42 that open into the kitchen room R. That is, the outdoor air supply system 20 is configured such that, by the operation of the outdoor air supply fan 21, the outdoor air OA of the outdoors O is taken into the main outdoor air supply duct 22, and the taken-in outdoor air OA is supplied to the kitchen room R as non-temperature-controlled outdoor air OA1 and temperature-controlled outdoor air OA2 described later through the branch outdoor air supply ducts 31, 35, 40 and the air supply ports 33, 37, 42.

[0021] Furthermore, the outdoor air supply system 20 is provided with a temperature control unit 47 that can control the temperature of the outdoor air OA by heat exchange with cold water or hot water, and this temperature control unit 47 is configured to be able to adjust the cooling amount and heating amount for the outdoor air OA by changing the flow rate of the cold water or hot water. The outside air supply system 20 has a non-conditioned outside air supply path that supplies non-conditioned outside air OA1, which is outside air OA that has not passed through the temperature control unit 47, to the kitchen room R through the non-conditioned outside air supply ducts 31, 35 and the non-conditioned outside air supply ports 33, 37, and a conditioned outside air supply path that supplies the outside air OA that has passed through the temperature control unit 47 as conditioned outside air OA2 to the kitchen room R through the conditioned outside air supply duct 40 and the conditioned outside air supply port 42. That is, the non-conditioned outside air supply path is an outside air supply path that leads from the main outside air supply duct 22 through the non-conditioned outside air supply ducts 31, 35 where the temperature control unit 47 is not provided to the non-conditioned outside air supply ports 33, 37, and the conditioned outside air supply path is an outside air supply path that leads from the main outside air supply duct 22 through the conditioned outside air supply duct 40 where the temperature control unit 47 is provided to the conditioned outside air supply port 42.

[0022] This air conditioning system is provided with a control device 50 for controlling the operation. By executing a predetermined computer program, this control device 50 functions as various desired control means 51, 52, 53, 54. For example, the temperature control unit control means 54 by which the control device 50 functions is configured as means for controlling the cooling amount and heating amount of the outside air OA by the temperature control unit 47 so that the temperature of the kitchen room R detected by the room temperature sensor 48 installed in the kitchen room R is maintained at a predetermined target indoor temperature. By the control of the temperature control unit 47 by this temperature control unit control means 54, the thermal environment of the entire kitchen room R is maintained appropriately.

[0023] The above is the basic configuration of this air conditioning system. Furthermore, while adopting a system configuration that is advantageous and simple from the viewpoints of equipment installation space and cost, this air conditioning system adopts a configuration for maintaining a good thermal environment around the heating and cooking equipment 1 while avoiding deterioration of air quality due to insufficient ventilation both around the heating and cooking equipment 1 and in the entire kitchen room R. The details thereof will be described below.

[0024] In the non-temperature-controlled outside air supply path, an outside air supply port 33 on the outer periphery of the exhaust hood 14 is provided as a non-temperature-controlled outside air supply port for supplying non-temperature-controlled outside air OA1 that has not passed through the temperature control unit 47 to the kitchen room R. On the other hand, in the temperature-controlled outside air supply path after the temperature control, a kitchen room overall outside air supply port 42 is provided at a location away from the exhaust hood 14 as a temperature-controlled outside air supply port for supplying the temperature-controlled outside air OA2 that has passed through the temperature control unit 47 to the kitchen room R.

[0025] That is, around the cooking appliance 1, indoor air RA is exhausted from the exhaust port 15 of the exhaust hood 14 above it, and at the same time, non-temperature-controlled outside air OA1 is supplied from the outside air supply port 33 on the outer periphery of the exhaust hood 14. Therefore, an air flow F1 of non-temperature-controlled outside air OA1 from the outside air supply port 33 on the outer periphery of the exhaust hood 14 toward the exhaust hood 14 is surely formed. Then, the exhaust heat H generated by the cooking appliance 1 is surely induced to the exhaust hood 14 and discharged to the outside O without diffusing throughout the kitchen room R. Thus, an increase in the energy consumption required for temperature control of the entire kitchen room R due to the diffusion of the exhaust heat H is suppressed. Furthermore, around the cooking appliance 1, non-temperature-controlled outside air OA1 is directly blown out from the outside air supply port 33 on the outer periphery of the exhaust hood 14 toward the periphery of the cooking appliance 1, so that the supply of oxygen is effectively performed. At the same time, since the exhaust is directly performed from the exhaust port 15 of the exhaust hood 14, the removal of heat, odors, moisture, etc. generated by the cooking appliance 1 is effectively performed. Therefore, deterioration of the air quality due to insufficient ventilation around the cooking appliance 1 is avoided.

[0026] On one hand, in the entire kitchen room R, tempered outside air OA2 appropriately temperature-controlled by the temperature control unit 47 is supplied from the outside air supply opening 42 for the entire kitchen room, which is arranged at a location away from the exhaust hood 14. Therefore, ventilation and air conditioning in the entire kitchen room R are properly carried out. Further, an air current F2 of the tempered outside air OA2 directed from the outside air supply opening 42 for the entire kitchen room, which is arranged at a location away from the exhaust hood 14, toward the exhaust hood 14 is formed. Then, the thermal environment around the cooking appliance 1 is improved, and the diffusion of exhaust heat H, odors, moisture, etc. generated by the cooking appliance 1 into the entire kitchen room R is further suppressed.

[0027] In the branch exhaust duct 13 through which the indoor air RA taken out from the kitchen room R flows through the exhaust port 15 of the exhaust hood 14, an exhaust damper 17 is provided which is operationally controlled by the control device 50 to adjust the air volume of the indoor air RA in the branch exhaust duct 13 as the exhaust air volume from the kitchen room R to the exhaust port 15. And the control device 50 functions as exhaust air volume control means 51 that controls the opening degree of this exhaust damper 17 according to the operating state of the cooking appliance 1. For example, the exhaust air volume control means 51 opens the exhaust damper 17 during the operation of the cooking appliance 1 and closes the exhaust damper 17 during the stop of the cooking appliance 1. Then, only during the operation of the cooking appliance 1, the exhaust damper 17 communicating with the exhaust port 15 of the exhaust hood 14 above it is opened, and the exhaust heat H, etc. discharged above the cooking appliance 1 is exhausted to the outside O through the branch exhaust duct 13 and the main exhaust duct 12 together with the indoor air RA from the exhaust port 15 of the exhaust hood 14. Still, in the state shown in FIG. 1, the exhaust damper 17 on the side of the first exhaust hood 14A above the operating first cooking appliance 1A and the exhaust damper 17 on the side of the second exhaust hood 14B above the operating second cooking appliance 1B are both open. That is, the exhaust heat H, etc. discharged above the first cooking appliance 1A is exhausted from the exhaust port 15 of the first exhaust hood 14A together with the indoor air RA, and the exhaust heat H, etc. discharged above the second cooking appliance 1B is exhausted from the exhaust port 15 of the second exhaust hood 14B together with the indoor air RA.

[0028] In a non-thermostatically controlled outside air supply duct 31 through which non-thermostatically controlled outside air OA1 blown out from an outside air supply port 33 on the outer periphery of an exhaust hood flows toward the periphery of a cooking appliance 1, a damper 32 for non-thermostatically controlled outside air is provided to adjust the supply air volume of the non-thermostatically controlled outside air OA1 (the blowing air volume of the non-thermostatically controlled outside air OA1 from the outside air supply port 33 on the outer periphery of the exhaust hood). And the control device 50 functions as a non-thermostatically controlled outside air supply air volume control means 52 that controls the opening degree of the damper 32 for non-thermostatically controlled outside air according to the operating state of the cooking appliance 1. For example, the non-thermostatically controlled outside air supply air volume control means 52 opens the damper 32 for non-thermostatically controlled outside air corresponding to the cooking appliance 1 during the operation of the cooking appliance 1, and closes the damper 32 for non-thermostatically controlled outside air corresponding to the cooking appliance 1 during the stop of the cooking appliance 1. Then, only during the operation of the cooking appliance 1, the damper 32 for non-thermostatically controlled outside air communicating with the outside air supply port 33 on the outer periphery of the exhaust hood 14 above it is opened, and the non-thermostatically controlled outside air OA1 is blown out from the outside air supply port 33 on the outer periphery of the exhaust hood toward the periphery of the cooking appliance 1.

[0029] In addition, in the state shown in FIG. 1, the damper 32 for non-thermostatically controlled outside air on the side of the first exhaust hood 14A above the operating first cooking appliance 1A is open. That is, the non-thermostatically controlled outside air OA1 is blown out from the outside air supply port 33 on the outer periphery of the first exhaust hood 14A toward the periphery of the first cooking appliance 1A. On the other hand, the damper 32 for non-thermostatically controlled outside air on the side of the second exhaust hood 14B above the operating second cooking appliance 1B is closed. Although details will be described later, the non-thermostatically controlled outside air OA1 is blown out from a side outside air supply port 37 different from the outside air supply port 33 on the outer periphery of the exhaust hood around the second cooking appliance 1B.

[0030] Regarding the second cooking appliance 1B installed near the wall, especially in winter, it is likely to be affected by the outdoors and become low in temperature. Moreover, the casing of the second exhaust hood 14B is likely to become low in temperature due to the relatively low-temperature non-temperature-controlled outside air OA1 blown out from the outside air supply port 33 on the outer periphery of the exhaust hood. Therefore, condensation may occur when the high-temperature and high-humidity indoor air RA generated around the second cooking appliance 1B comes into contact with the low-temperature casing of the second exhaust hood 14B, which may cause problems. Therefore, for this second cooking appliance 1B, as a non-temperature-controlled outside air supply port, a side outside air supply port 37 is provided to blow out the non-temperature-controlled outside air OA1 from the side toward the second cooking appliance 1B, separately from the outside air supply port 33 on the outer periphery of the exhaust hood. Further, a non-temperature-controlled outside air damper 36 for adjusting the supply air volume of the non-temperature-controlled outside air OA1 (the blowing air volume of the non-temperature-controlled outside air OA1 from the side outside air supply port 37) is provided in the non-temperature-controlled outside air supply duct 35 through which the non-temperature-controlled outside air OA1 blown out from the side outside air supply port 37 flows around the second cooking appliance 1B.

[0031] Then, in winter when the casing temperature of the second exhaust hood 14B drops, the non-temperature-controlled outside air damper 32 communicating with the outside air supply port 33 on the outer periphery of the exhaust hood of the second exhaust hood 14B is closed and the non-temperature-controlled outside air damper 36 communicating with the side outside air supply port 37 is opened by a switching switch operation by the user or switching control by the control device 50, so that the blowing source of the non-temperature-controlled outside air OA1 around the second cooking appliance 1B is switched from the outside air supply port 33 on the outer periphery of the exhaust hood to the side outside air supply port 37. Incidentally, in the switching control by the control device 50, based on the season, outside air temperature, etc., the opening and closing states of the non-temperature-controlled outside air damper 32 and the non-temperature-controlled outside air damper 36 are switched to switch the blowing source of the non-temperature-controlled outside air OA1 around the second cooking appliance 1B between the outside air supply port 33 on the outer periphery of the exhaust hood and the side outside air supply port 37. Then, the blowing of the unconditioned outside air OA1 from the outside air supply port 33 on the outer periphery of the exhaust hood of the second exhaust hood 14B stops, preventing the temperature of the housing of the second exhaust hood 14B from decreasing. Thus, the occurrence of condensation in the second exhaust hood 14B is avoided. Furthermore, instead of the unconditioned outside air OA1 blowing out from the outside air supply port 33 on the outer periphery of the exhaust hood of the second exhaust hood 14B, the unconditioned outside air OA1 blows out from the side outside air supply port 37. This suppresses the diffusion of the exhaust heat H from the second cooking appliance 1B, suppressing an increase in the energy consumption required for temperature control of the entire kitchen room R due to the exhaust heat H. Furthermore, deterioration of the air quality due to insufficient ventilation around the second cooking appliance 1B is avoided. Also, the unconditioned outside air supply air volume control means 52 controls the opening degree of the unconditioned outside air damper 36 according to the operating state of the second cooking appliance 1B, similar to the opening degree of the unconditioned outside air damper 32. During the operation of the second cooking appliance 1B, only the unconditioned outside air damper 36 leading to the side outside air supply port 37 disposed on its side is opened, and the unconditioned outside air OA1 is blown out from the side outside air supply port 37 toward the periphery of the second cooking appliance 1B.

[0032] In the temperature-controlled outside air supply duct 40 through which the temperature-controlled outside air OA2 blown out to the entire kitchen room R from the entire-kitchen-room outside air supply port 42 flows, an after-temperature-controlled outside air damper 45 capable of adjusting the supply air volume of the temperature-controlled outside air OA2 (the blowing air volume of the temperature-controlled outside air OA2 from the entire-kitchen-room outside air supply port 42) is provided. And the control device 50 functions as after-temperature-controlled outside air supply air volume control means 53 that controls the opening degree of the after-temperature-controlled outside air damper 45 so that the supply air volume of the temperature-controlled outside air OA2 is maintained at a predetermined target outside air supply air volume. That is, by controlling the opening degree of the after-temperature-controlled outside air damper 45 of the after-temperature-controlled outside air supply air volume control means 53, the supply air volume of the temperature-controlled outside air OA2 from the entire-kitchen-room outside air supply port 42 disposed at a location away from the exhaust hood 14 to the entire kitchen room R is maintained at, for example, the target outside air supply air volume for maintaining the air quality of the entire kitchen room R at an appropriate level.

[0033] 〔Alternative Embodiment〕 Another embodiment of the present invention will be described. Note that the configurations of the embodiments described below are not limited to being applied individually, and can also be applied in combination with the configurations of other embodiments.

[0034] (1) In the above embodiment, the control means 51, 52, 53, 54 by which the control device 50 functions are provided, but these control means 51, 52, 53, 54 may be appropriately modified or omitted. Further, along with the modification or omission of these control means 51, 52, 53, 54, the various dampers 17, 32, 36, 45 may also be modified or omitted.

[0035] (2) In the above embodiment, as a non-temperature-controlled outside air supply port for supplying non-temperature-controlled outside air OA1 to the kitchen room R, a side outside air supply port 37 for blowing out non-temperature-controlled outside air OA1 from the side toward the second cooking appliance 1B is provided separately from the outside air supply port 33 on the outer periphery of the exhaust hood. However, it may be configured to blow out non-temperature-controlled outside air OA1 only from the outside air supply port 33 on the outer periphery of the exhaust hood without providing the side outside air supply port 37.

[0036] (3) In the above embodiment, in one kitchen room R, the first cooking appliance 1A is installed near the center of the kitchen room R, and the second cooking appliance 1B is installed near the wall. However, the number of cooking appliances installed and the installation location in one kitchen room R can be appropriately changed. Further, in the above embodiment, an example in which the kitchen air conditioning system according to the present invention is applied to one kitchen room R has been described. However, the kitchen air conditioning system according to the present invention can be applied in a form in which a common exhaust system 10 (main exhaust duct 12) and outside air supply system 20 (main outside air supply duct 22) are provided for a plurality of kitchen rooms R.

Explanation of Reference Numerals

[0037] 1 Cooking appliance 10 Exhaust system 14 Exhaust hood 20 Outside air supply system 32 Damper for non-temperature-controlled outside air 33 Outside air supply port on the outer periphery of the exhaust hood (non-temperature-controlled outside air supply port) 36 Damper for non-temperature-controlled outside air 37 Side outside air supply opening (non-temperature-controlled outside air supply opening) 42 Whole kitchen room outside air supply opening (outside air supply opening after temperature control) 45 Damper for outside air after temperature control 47 Temperature control section 52 Non-temperature-controlled outside air supply air volume control means 53 Outside air supply air volume control means after temperature control 54 Temperature control section control means EA Exhaust O Outdoor OA Outside air OA1 Non-temperature-controlled outside air OA2 Outside air after temperature control R Kitchen room RA Indoor air

Claims

1. An exhaust system that exhausts indoor air taken out from the kitchen room to the outdoors through an exhaust hood above a cooking appliance installed in the kitchen room, and an outdoor air supply system that supplies outdoor air taken in from the outdoors to the kitchen room through an air supply port, wherein the outdoor air supply system has a temperature control unit capable of temperature-adjusting outdoor air, and a non-temperature-controlled outdoor air supply path that supplies non-temperature-controlled outdoor air that has not passed through the temperature control unit to the kitchen room through a non-temperature-controlled outdoor air supply port, and a temperature-controlled outdoor air supply path that supplies the outdoor air that has passed through the temperature control unit to the kitchen room through a temperature-controlled outdoor air supply port as temperature-controlled outdoor air, wherein the non-temperature-controlled outdoor air supply port includes an exhaust hood outer peripheral portion outdoor air supply port disposed on the outer peripheral portion of the exhaust hood, and the temperature-controlled outdoor air supply port includes an entire kitchen room outdoor air supply port disposed at a location away from the exhaust hood, a kitchen air conditioning system.

2. Non-temperature-controlled outdoor air supply air volume control means for controlling the opening degree of a damper for non-temperature-controlled outdoor air, which can adjust the supply air volume of the non-temperature-controlled outdoor air from the exhaust hood outer peripheral portion outdoor air supply port to the kitchen room, according to the operating state of the cooking appliance, and temperature-controlled outdoor air supply air volume control means for controlling the opening degree of a damper for temperature-controlled outdoor air, which can adjust the supply air volume of the temperature-controlled outdoor air from the entire kitchen room outdoor air supply port to the kitchen room, so that the supply air volume of the temperature-controlled outdoor air is maintained at a predetermined target outdoor air supply air volume. The kitchen air conditioning system according to claim 1.

3. The kitchen air conditioning system according to claim 2, further comprising temperature control unit control means for controlling the temperature control unit so that the temperature of the kitchen room is maintained at a predetermined target indoor temperature.

4. The kitchen air conditioning system according to any one of claims 1 to 3, wherein the non-temperature-controlled outdoor air supply port includes a side outdoor air supply port that blows non-temperature-controlled outdoor air from the side toward the cooking appliance, in addition to the exhaust hood outer peripheral portion outdoor air supply port.

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