Heat discharge mechanism

Abstract

To provide a heat discharge mechanism capable of controlling summer-and-winter thermal environments in a building.SOLUTION: The heat discharge mechanism includes an outside air treatment air conditioning device 30 including a desiccant rotor 38, an open ceiling 14 provided on the outer periphery of a building 10, and communicated with floors on stairs, a top light 20 provided on the top of the open ceiling 14 and having an air reservoir space 24 formed on the lower side, a first air exhaust path (an air exhaust passage 62) capable of introducing exhaust air from the air reservoir space 24 to the desiccant rotor 38, and a second air exhaust path (an air exhaust passage 74) for exhausting cold air from the floor of an open ceiling bottom part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an exhaust heat mechanism.

Background Art

[0002] Patent Document 1 below describes an air conditioning system in which a heat storage space for storing heat from sunlight is formed in a building's atrium space. According to this air conditioning system, the air in the heat storage space is used for the regeneration of a dehumidifying section that is a desiccant rotor.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a building equipped with the air conditioning system shown in Patent Document 1 above, the atrium space is provided inside the building. On the other hand, from the viewpoints of daylighting and outlook, the atrium may be provided at the outer peripheral part of the building. In such a case, since the atrium is exposed to the outside air temperature, the thermal environment in the building in summer and winter is likely to deteriorate.

[0005] In consideration of the above facts, an object of the present invention is to provide an exhaust heat mechanism capable of adjusting the thermal environment in a building in summer and winter.

Means for Solving the Problems

[0006] The exhaust heat mechanism according to claim 1 includes an outdoor air treatment air conditioner equipped with a desiccant rotor, an atrium provided at the outer peripheral part of the building and communicating with the floors of each floor, a toplight provided at the top of the atrium and having an air accumulation space formed below, a first exhaust passage capable of introducing the exhaust from the air accumulation space to the desiccant rotor, and a second exhaust passage for exhausting cold air from the floor at the bottom of the atrium.

[0007] In the exhaust heat mechanism of claim 1, the heat of the air accumulation space is used for the regeneration of the desiccant rotor by the first exhaust passage. Thereby, it is not necessary to generate regeneration heat by a heating coil or the like, or the amount of regeneration heat generated by a heating coil or the like can be reduced, and energy can be saved.

[0008] Also, warm air can be exhausted from the top of the atrium provided on the outer periphery of the building by the first exhaust passage, and cold air can be exhausted from the bottom of the atrium by the second exhaust passage. Thereby, the thermal environment in the building in summer and winter can be adjusted.

[0009] The exhaust heat mechanism of claim 2 is the exhaust heat mechanism according to claim 1, wherein the outside air treatment air conditioner includes a total heat exchanger, and a third exhaust passage for exhausting indoor air is connected to the first exhaust passage, and a control device for switching the air introduced into the total heat exchanger according to the temperature of the air in the air accumulation space and the temperature of the indoor air is provided.

[0010] In the exhaust heat mechanism of claim 2, a third exhaust passage is connected to the first exhaust passage, and the air introduced into the total heat exchanger can be switched according to the temperature of the air in the air accumulation space and the temperature of the indoor air. Thereby, when the air temperature in the air accumulation is low in winter, the relatively high-temperature indoor air can be used for heat exchange with the outside air.

[0011] The exhaust heat mechanism of claim 3 is the exhaust heat mechanism according to claim 1 or 2, wherein the cold air discharged to the second exhaust passage is introduced into a cold air demand room, heated and refluxed into the room, or discharged outdoors.

[0012] In the exhaust heat mechanism of claim 3, when the cold air discharged to the second exhaust passage is introduced into a cold air demand room, the cold air can be effectively utilized. Also, when the cold air is heated and refluxed into the room, less energy is required than heating the outside air. Further, when the cold air is discharged outdoors, the exhaust mechanism can be simply configured.

[0013] The exhaust heat mechanism of claim 4 is the exhaust heat mechanism according to claim 1 or 2, wherein the air accumulation space is formed by being sandwiched between upper and lower light-transmitting plates.

[0014] In the exhaust heat mechanism of claim 4, compared with a top light without a lower light-transmitting plate, the height of the air pocket can be reduced, and the building height can be lowered.

Advantages of the Invention

[0015] According to the present invention, the thermal environment in a building in summer and winter can be adjusted.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0017] Hereinafter, the exhaust heat mechanism according to the embodiment of the present invention will be described with reference to the drawings. Components denoted by the same reference numerals in the respective drawings mean the same components. However, unless otherwise specified in the specification, each component is not limited to one, and a plurality of them may exist.

[0018] In addition, the description of overlapping configurations and reference numerals in the respective drawings may be omitted. Note that the present disclosure is not limited to the following embodiments, and appropriate changes can be made and implemented, such as omitting configurations, replacing with different configurations, and combining one embodiment and various modified examples within the scope of the object of the present disclosure.

[0019] <Building> The exhaust heat mechanism according to the embodiment of the present invention shown in FIG. 1 is applied to a building 10. The building 10 is a multi-story building, and at least one surface of the outer peripheral portion is formed of a translucent plate 12 such as glass.

[0020] Further, the building 10 has a void 14 communicating with the floor of each floor facing the translucent plate 12. The void 14 is formed over a plurality of floors from the top floor of the building 10.

[0021] <Exhaust heat mechanism> The exhaust heat mechanism includes a void 14, a top light 20, an outdoor air treatment air conditioner 30, an air supply mechanism 50, a first exhaust mechanism 60, and a second exhaust mechanism 70.

[0022] (Top light) A top light 20 is formed at the top of the void 14. At least a part of the top light 20 is provided above the floor use area R. The "floor use area R" is, for example, a living room or a corridor where users move in the space of the building 10.

[0023] In the present embodiment, a part of the top light 20 is provided directly above the portion of the floor use area R on the top floor of the building 10 that faces the void 14. The remaining part of the top light 20 is provided directly above the void 14. That is, the top light 20 is provided straddling the floor use area R on the top floor of the building 10 and the top of the void 14.

[0024] An air accumulation space 24 is formed between translucent plates 22A and 22B arranged at intervals in the vertical direction in the top light 20. The translucent plates 22A and 22B are formed using glass.

[0025] Among these, the translucent plate 22A arranged above is formed using heat-insulating type glass or heat-insulating type glass such as Low-E (Low Emissivity) glass. Further, a roll screen S that can be wound up and unwound is arranged below the translucent plate 22A.

[0026] Note that as the light-transmitting plate 22A, it is not necessarily required to use Low-E (Low Emissivity) glass. Also, Low-E (Low Emissivity) glass may be used for the light-transmitting plate 22B. Furthermore, as the material for forming the light-transmitting plates 22A and 22B, in addition to glass, polycarbonate or the like can be used.

[0027] The toplight 20 is provided with an introduction hole 26 for introducing air from the void 14 into the air accumulation space 24. The light-transmitting plate 22B slopes upward toward the introduction hole 26. Also, a louver L is disposed below the light-transmitting plate 22B with a gap therebetween. The louver L is provided for the purpose of adjusting the amount of daylight admitted into the indoor space, but it can also be omitted as appropriate.

[0028] (Outdoor air treatment air conditioner) The outdoor air treatment air conditioner 30 is configured to include a total heat exchanger 32, a chilled / hot water coil 34, a supply air fan 36, a desiccant rotor 38, a heating coil 40, and an exhaust fan 42.

[0029] The supply air mechanism 50 and the first exhaust mechanism 60 are coordinated with the outdoor air treatment air conditioner 30. Specifically, the outdoor air treatment air conditioner 30 is connected to a supply air path 52 that constitutes the supply air mechanism 50, and is also connected to an exhaust path 62 that constitutes the first exhaust mechanism 60.

[0030] Although details will be described later, the supply air mechanism 50 is a mechanism for supplying conditioned air to the internal space of the building 10 including the floor use area. Also, the first exhaust mechanism 60 is a mechanism for exhausting air from the internal space of the building 10 including the floor use area to the outdoors.

[0031] The total heat exchanger 32 exchanges heat between the outdoor air introduced into the outdoor air treatment air conditioner 30 via the supply air path 52 and the exhaust air from the building 10 introduced into the outdoor air treatment air conditioner 30 via the exhaust path 62. For example, in summer, it exchanges heat between the high-temperature outdoor air and the relatively low-temperature exhaust air to lower the temperature of the outdoor air in the supply air path 52.

[0032] In addition, when the exhaust temperature after passing through the desiccant rotor 38 described later is higher than the outside air temperature, a bypass 62A is provided in the exhaust path 62 in order to discharge the exhaust outdoors without passing through the total heat exchanger 32.

[0033] The chilled and heated water coil 34 is a device capable of heating and cooling the air supplied to the internal space of the building 10 to generate conditioned air. The chilled and heated water coil 34 may be formed separately into a cooling coil and a heating coil.

[0034] The supply air fan 36 is a blower that sends conditioned air to the internal space of the building 10. The conditioned air is blown into the internal space of the building 10 via the desiccant rotor 38.

[0035] The desiccant rotor 38 is a dehumidifying device that adsorbs moisture from the conditioned air blown into the internal space of the building 10 to dehumidify it. The desiccant rotor 38 that has adsorbed moisture is rotated and arranged on the exhaust path 62 side, and is dehumidified and regenerated by the exhaust that has been heated to warm air.

[0036] The heating coil 40 is a device that heats the exhaust air in the building 10 introduced into the outside air treatment air conditioner 30 via the exhaust path 62 and raises the temperature to the temperature required for the regeneration of the desiccant rotor.

[0037] The exhaust fan 42 is a blower that sends exhaust air to the outside of the building 10. The exhaust air is discharged to the outside of the building 10 via the total heat exchanger 32 or the bypass 62A.

[0038] (Supply air mechanism) The supply air mechanism 50 is formed by including a supply air path 52, a VAV (Variable Air Volume) 54, an AHU (Air Handling Unit) 56, and a chamber 58 connected to the outside air treatment air conditioner 30.

[0039] The air supply path 52 has a branch path 52A on the downstream side with respect to the upstream side connected to the outside air processing air-conditioning device 30. The number of branch paths 52A can be appropriately selected, but in this embodiment, one is provided for each floor of the building 10.

[0040] The VAV 54 is provided at the outside air intake port of the air supply path 52 and at each branch path 52A. The airflow rate of each VAV 54 is controlled in conjunction with each other by a control device (not shown).

[0041] The AHU 56 is a device that supplies conditioned air from the branch path 52A to the floor utilization area R of each floor. In the branch path 52A, a chamber 58 is disposed upstream of the AHU 56. In addition, the chamber 58 is also supplied with return air RA from the floor utilization area R of each floor via a return air path 80. In other words, the AHU 56 is supplied with mixed air obtained by mixing the supply air and the return air in the chamber 58.

[0042] The AHU 56 is equipped with a pre-filter, a hot and cold water coil, and a fan (not shown), and is capable of adjusting the temperature of the mixed air to any desired temperature.

[0043] The air whose temperature has been adjusted in the AHU 56 is supplied to the floor utilization area R through the air conditioning path 16 provided under the floor of the building 10. Air outlets (not shown) are provided on the floor of the floor utilization area R. Each air outlet is provided with an electric shutter, which is controlled in conjunction with the fan of the AHU 56 by a control device (not shown).

[0044] (First exhaust mechanism) The first exhaust mechanism 60 includes an exhaust path 62 connected to the outside air processing air-conditioning device 30, and a branch path 64. The exhaust path 62 is an exhaust path that can introduce exhaust air from the air accumulation space 24 to the desiccant rotor .

[0045] The exhaust path 62 can exhaust the air in the air accumulation space 24 heated by solar radiation. Thereby, the air accumulation space 24 functions as a ventilation space that exhausts the indoor air introduced from the introduction hole 26 to the exhaust path 62.

[0046] On the other hand, the branch path 64 is connected to the exhaust path 62 and is an exhaust path through which the indoor air in the floor use area R can be introduced to the desiccant rotor 38 via the exhaust path 62. In FIG. 1, the branch path 64 is provided only on the top floor of the building 10, but it may be provided on other floors.

[0047] On the upstream side of the location where the branch path is connected in the exhaust path 62 and in the branch path 64, electromagnetic valves 66A and 66B are provided respectively. The electromagnetic valves 66A and 66B are controlled to open and close by a control device (not shown).

[0048] This control device controls the electromagnetic valves 66A and 66B according to the temperature of the air in the air accumulation space 24 and the temperature of the indoor air, and switches the air introduced into the desiccant rotor 38 or the total heat exchanger 32.

[0049] For example, in summer, when the temperature of the air in the air accumulation space 24 is higher than the temperature of the indoor air, the control device opens the electromagnetic valve 66A and closes the electromagnetic valve 66B. Thereby, the air in the air accumulation space 24 is introduced into the desiccant rotor 38.

[0050] Alternatively, in winter, when the temperature of the air in the air accumulation space 24 is lower than the temperature of the indoor air, the control device closes the electromagnetic valve 66A and opens the electromagnetic valve 66B. Thereby, the air in the floor use area R is introduced into the total heat exchanger 32. In winter, the drive of the desiccant rotor 38 can be stopped.

[0051] (Second exhaust mechanism) The second exhaust mechanism 70 includes a suction port 72, an exhaust path 74, and a solenoid valve 76. The suction port 72 is an opening formed in the floor at the bottom of the void 40, and one end of the exhaust path 74 is connected thereto. The exhaust path 74 exhausts cold air from the floor at the bottom of the void 40 through the suction port 72. The other end of the exhaust path 74 is connected to an arbitrary chamber 58.

[0052] The solenoid valve 76 is controlled to open and close by a control device (not shown). Note that an exhaust fan that operates in conjunction with the solenoid valve 76 may be provided in the exhaust path 74.

[0053] For example, in winter, when the temperature of the floor near the bottom of the void 40 (i.e., the perimeter area) is lower than the temperature of other parts, or when it is lower than a predetermined threshold value, the control device opens the solenoid valve 76 to exhaust cold air.

[0054] The exhausted cold air is heated by the AHU 56 and refluxed into the room. Note that the other end of the exhaust path 74 may be opened to a cold air demand room such as a server room to introduce cold air into the cold air demand room. Alternatively, the other end of the exhaust path 74 may be opened to the outdoor space to exhaust cold air.

[0055] <Actions and effects> In the exhaust heat mechanism according to the embodiment of the present invention, the toplight 20 is provided above the floor utilization area R. Thereby, the floor utilization area R can be illuminated.

[0056] In addition, the air heated by solar radiation is stored in the air accumulation space 24 and exhausted by the first exhaust mechanism 60. Therefore, the thermal environment of the floor utilization area R is less likely to deteriorate. In particular, the thermal environment of the floor utilization area R on the top floor of the building 10 is less likely to deteriorate.

[0057] Furthermore, the air accumulation space is formed between the light-transmitting plates 22A and 22B that are vertically spaced apart. For this reason, the air warmed by the solar radiation passing through the upper light-transmitting plate 22A is blocked by the lower light-transmitting plate 22B and hardly reaches the floor use area R. As a result, compared with the toplight without the lower light-transmitting plate 22B, while suppressing the height of the air accumulation space 24 (in other words, while suppressing the height of the building 10), it is difficult for the habitability of the floor use area R to deteriorate.

[0058] On the other hand, if there is no light-transmitting plate 22B, the air warmed by the solar radiation accumulates below the toplight, and since there is nothing to block this air, it easily reaches the floor use area R.

[0059] And in the case where there is no light-transmitting plate 22B, in order to make it difficult for the warmed air to reach the floor use area R, as shown by the two-dot chain line T in FIG. 1, it is necessary to increase the protruding height of the toplight with respect to the building 10 to increase the air volume.

[0060] Also, in the exhaust heat mechanism according to the embodiment of the present invention, the toplight 20 is provided not only above the floor use area R but also straddling the top of the through-hole 14 communicating with each floor of the building. Thereby, daylight can be taken in to each floor of the building through the through-hole 14.

[0061] In addition, since the exhaust air from each floor of the building is introduced into the air accumulation space 24 of the toplight 20 through the through-hole 14, the ventilation path can be unified.

[0062] Also, in the exhaust heat mechanism according to the embodiment of the present invention, the through-hole 14 is provided on the outer peripheral portion of the building 10. For this reason, daylight can be taken in to each floor of the building not only through the top of the through-hole 14 but also through the light-transmitting plate 12 on the outer peripheral portion. In addition, the air on the outer peripheral portion that is easily warmed can be efficiently collected into the air accumulation space 24 for exhaust heat.

[0063] Also, in the exhaust heat mechanism according to the embodiment of the present invention, the first exhaust mechanism 60 exhausts the air in the air accumulation space 24 to the outside through the desiccant rotor 38. By using the heat in the air accumulation space 24 for the regeneration of the desiccant rotor 38 in this way, it is not necessary to generate regeneration heat by the heating coil 40, or the amount of regeneration heat generated by the heating coil 40 can be reduced, and energy can be saved.

[0064] Also, in the exhaust heat mechanism according to the embodiment of the present invention, since the lower light-transmitting plate 22B has an upward gradient toward the introduction hole 26, warm air flows along the light-transmitting plate 22B toward the introduction hole, and the exhaust efficiency is high.

[0065] Also, in the exhaust heat mechanism according to the embodiment of the present invention, the upper light-transmitting plate 22A in the top light 20 is heat-insulating type glass or heat-insulating type glass. Thereby, compared with a structure that does not use these glasses or a structure in which the lower light-transmitting plate 22B is made of these glasses, an increase in the indoor temperature due to solar radiation can be suppressed. Also, by providing heat-insulating type glass, it is possible to suppress the heat inside the room from escaping to the outside in winter.

[0066] Also, in the exhaust heat mechanism according to the embodiment of the present invention, warm air can be exhausted from the top of the blow-through 14 provided on the outer peripheral portion of the building 10 by the exhaust path 62, and cold air can be exhausted from the bottom by the exhaust path 74. Thereby, the thermal environment in the building 10 in summer and winter can be adjusted.

[0067] Also, in the exhaust heat mechanism according to the embodiment of the present invention, a branch path 64 is connected to the exhaust path 62, and the air introduced into the total heat exchanger 32 can be switched according to the temperature of the air in the air accumulation space 24 and the temperature of the indoor air. Thereby, when the air temperature in the air accumulation is low in winter, relatively warm indoor air can be used for heat exchange with the outside air.

[0068] Further, in the exhaust heat mechanism according to the embodiment of the present invention, the cold air discharged into the exhaust path 74 is introduced into the cold air demand chamber, heated and refluxed into the room, or discharged outdoors. When introduced into the cold air demand chamber, the cold air can be effectively utilized. When heated and refluxed into the room, less energy is required than heating the outside air. When discharged outdoors, the exhaust mechanism can be simply configured.

[0069] <Other Embodiments> In the above embodiment, the top light 20 is provided with the introduction hole 26, and the light-transmitting plate 22B slopes upward toward the introduction hole 26, but the embodiment of the present invention is not limited to this.

[0070] For example, as shown in FIG. 2, the top light 20 may not be provided with the introduction hole 26, and the light-transmitting plate 22B may be arranged horizontally. Even if the top light 20 is not provided with the introduction hole 26 and the light-transmitting plate 22B is arranged horizontally, the exhaust air from the air accumulation space 24 can be introduced into the desiccant rotor 38.

[0071] Also, in the above embodiment, the branch path 64 is connected to the exhaust path 62, and it is assumed that the air introduced into the desiccant rotor 38 can be switched, but the embodiment of the present invention is not limited to this. For example, such a branch path 64 is not necessarily provided. Even if the branch path 64 is not provided, at least in summer when the air temperature in the air accumulation space 24 becomes high, the exhaust air from the air accumulation space 24 can be introduced into the desiccant rotor 38. Thereby, the regeneration energy of the desiccant rotor 38 can be saved.

[0072] Also, in the above embodiment, at least a part of the top light 20 is provided above the floor use area R on the top floor of the building 10, but the embodiment of the present invention is not limited to this.

[0073] For example, as shown in FIG. 3, the entire top light 20 may be arranged at the top of the through space 14. Even in such a mode, the heat of the air accumulation space 24 can be used for the regeneration of the desiccant rotor 38 to save energy.

[0074] Also, in the above-described embodiment, the air accumulation space 24 is formed between the light-transmitting plates 22A and 22B that are vertically spaced apart. However, the embodiment of the present invention is not limited to this. For example, the lower light-transmitting plate 22B may be omitted. Thus, the present invention can be implemented in various modes.

Explanation of Reference Numerals

[0075] 10 Building 14 Atrium 20 Top Light 22A Light-transmitting Plate 22B Light-transmitting Plate 24 Air Accumulation Space 26 Introduction Hole 30 Outdoor Air Treatment Air Conditioning Unit 38 Desiccant Rotor 62 Exhaust Path (First Exhaust Path) 64 Branch Path (Third Exhaust Path) 74 Exhaust Path (Second Exhaust Path)

Claims

1. An outdoor air treatment air conditioner equipped with a desiccant rotor, a through-pass provided on the outer periphery of a building and communicating with the floors of each floor, a top light provided at the top of the through-pass and having an air accumulation space formed below, a first exhaust passage capable of introducing exhaust air from the air accumulation space to the desiccant rotor, a second exhaust passage for exhausting cold air from the floor at the bottom of the through-pass, and a waste heat removal mechanism including the same.

2. The outdoor air treatment air conditioner includes a total heat exchanger, a third exhaust passage for exhausting indoor air is connected to the first exhaust passage, and a control device for switching the air introduced into the total heat exchanger according to the temperature of the air in the air accumulation space and the temperature of the indoor air. The waste heat removal mechanism according to Claim 1.

3. The cold air discharged to the second exhaust passage is introduced into a cold air demand room, heated and refluxed into the room, or discharged outdoors. The waste heat removal mechanism according to Claim 1 or 2.

4. The air accumulation space is formed by being sandwiched between upper and lower light-transmitting plates. The waste heat removal mechanism according to Claim 1 or 2.

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