Chamber box

Abstract

To provide technique capable of easily crossing ducts in a limited space.SOLUTION: A chamber box 200 includes a body 210, an inner connection port 212, an outer connection port 214, an upper surface 216, and a placement surface 218. The body 210 has a hollow structure. The inner connection port 212 connects the body 210 to a first connection port of a ventilation device. The outer connection port 214 connects a first duct to the body 210. The placement surface 218 has a shape made by recessing the upper surface 216 of the body 210. A second duct connected to a second port of the ventilation device can be placed on the placement surface 218.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present disclosure relates to a chamber box to be connected to a ventilation device.

Background Art

[0002] In order to cross ducts in a limited space in the ceiling, the diameter of the main duct is made thicker to be equal to or less than the sum of the diameter of the main duct and the diameter of the crossing duct, and the crossing duct is passed through the thickened main duct (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 has a structure in which two straight ducts cross at a right angle. Such a structure cannot be used when ducts other than straight ducts such as heat-insulating ducts cross at an angle other than a right angle. Therefore, it is required to make it easier to cross ducts in a limited space in the ceiling.

[0005] Therefore, the present disclosure solves the above-described conventional problems and aims to provide a technique for facilitating duct crossing in a limited space.

Means for Solving the Problems

[0006] To solve the above problems, a chamber box according to an aspect of the present disclosure includes a main body having a hollow structure, an inner connection port for connecting the main body to a first connection port of a ventilation device, an outer connection port for connecting a first duct to the main body, and a mounting surface formed by recessing an upper surface of the main body. A second duct connected to a second connection port of the ventilation device can be mounted on the mounting surface.

Advantages of the Invention

[0007] According to the present disclosure, it is possible to easily cross ducts in a limited space.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

[0009] Hereinafter, this embodiment will be described with reference to the accompanying drawings. Note that all the embodiments described below show preferred specific examples of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Accordingly, among the components in the following embodiments, the components not described in the independent claims indicating the highest-level concept of the present disclosure are described as arbitrary components. Also, in each figure, the same reference numerals are assigned to substantially the same configurations, and duplicate descriptions are omitted or simplified. Hereinafter, this embodiment will be described in the order of (1) a ventilation and air-conditioning device and (2) a chamber box.

[0010] (1) Ventilation and air-conditioning device First, the schematic configuration of the ventilation and air-conditioning device 100 according to this embodiment will be described with reference to FIGS. 1 to 3(a)-(b). FIG. 1 is a view showing a state where the ventilation and air-conditioning device 100 is installed in the house 1. FIG. 2(a) is a perspective view of the ventilation and air-conditioning device 100 as viewed from the bottom surface direction, and FIG. 2(b) is a cross-sectional view of the ventilation and air-conditioning device 100. FIG. 3(a) is a schematic configuration diagram of the ventilation and air-conditioning device 100, and FIG. 3(b) is a schematic diagram schematically showing the refrigeration cycle 102 provided in the ventilation and air-conditioning device 100.

[0011] The ventilation and air-conditioning device 100 is a device that can ventilate the indoor space of the house 1, for example, the space of the bathroom 10, and can also perform air-conditioning such as dehumidification and cooling of the bathroom 10. The ventilation and air-conditioning device 100 is capable of performing a dehumidification and drying operation for the purpose of drying the clothes dried in the bathroom 10. When the user instructs the ventilation and air-conditioning device 100 to perform a dehumidification and drying operation from a remote control (not shown), the ventilation and air-conditioning device 100 can dry the clothes by performing a dehumidification operation of dehumidifying the bathroom 10.

[0012] As shown in FIG. 1, the house 1 in which the ventilation and air conditioning device 100 is installed is partitioned into various living spaces 13 such as a bathroom 10 as an indoor space, a dressing room, a corridor, a toilet, a living room, a dining room, a kitchen, a bedroom, and other living rooms. And the house 1 has various living spaces 13 provided separately, for example, on the first floor (the first floor) F1 and the second floor (the second floor) F2.

[0013] The ventilation and air conditioning device 100 is installed by being embedded in the floor space S provided between the second floor F2 and the first floor F1 where the bathroom 10 to be ventilated and air-conditioned is located. Thereby, the ventilation and air conditioning device 100 can ventilate and air-condition the bathroom 10 without narrowing the bathroom 10 and other living spaces 13 of the house 1.

[0014] In addition, since the ventilation and air conditioning device 100 is provided in the floor space S instead of in the ceiling space above the second floor F2, the duct connected to the bathroom 10 can be easily routed. Also, the ventilation and air conditioning device 100 can be installed in a form embedded directly above the bathroom 10. Thereby, the ventilation and air conditioning device 100 can also be directly connected to the bathroom suction opening 11 and the bathroom blowing opening 12 provided on the ceiling surface of the bathroom 10 without using a duct, through the suction port 103 and the blowing port 104 (see FIGS. 2(a) and 3(a)) of the ventilation and air conditioning device 100.

[0015] In this embodiment, the case where the ventilation and air conditioning device 100 ventilates and air-conditions the bathroom 10 will be described, but other living spaces 13 may be the objects of ventilation and air conditioning. Also, if the routing of the duct is possible, the installation location of the ventilation and air conditioning device 100 may be installed at any location in the ceiling space of the house 1 including the floor space S.

[0016] As shown in FIGS. 2(a), 2(b) and 3(a), the ventilation and air conditioning apparatus 100 has a main body case 101 having an internal space 130. The internal space 130 is partitioned into five spaces: a first heat exchange space 131, a second heat exchange space 132, a suction space 133, a supply air space 134, and an exhaust space 135. Further, the main body case 101 has four openings: a suction port 103, a blowout port 104, a supply air port 107, and an exhaust port 108.

[0017] The first heat exchange space 131 is a space having a first heat exchanger 120. The first heat exchanger 120 constitutes a refrigeration cycle 102 described later and performs heat exchange with the air present in the first heat exchange space 131.

[0018] The blowout port 104 is an opening provided in the first heat exchange space 131. Further, the first heat exchange space 131 has a circulation fan 113. When the circulation fan 113 is turned on, the air in the first heat exchange space 131 is blown out from the blowout port 104 into the bathroom 10 through a bathroom blowout opening 12 provided on the ceiling surface of the bathroom 10.

[0019] Although details will be described later, the first heat exchange space 131 communicates with the second heat exchange space 132, and the second heat exchange space 132 communicates with the suction space 133, thereby forming a first circulation air path 140 (see FIG. 4(a)). The first circulation air path 140 is a circulation air path that connects the internal space 130 (the suction space 133, the second heat exchange space 132, and the first heat exchange space 131) and the bathroom 10 through the suction port 103 and the blowout port 104.

[0020] Further, the first heat exchange space 131 communicates with the suction space 133, thereby forming a second circulation air path 142 (see FIG. 4(c)). The second circulation air path 142 is a circulation air path that connects the internal space 130 (the suction space 133 and the first heat exchange space 131) and the bathroom 10 through the suction port 103 and the blowout port 104.

[0021] The circulation fan 113 is provided on these first circulation air ducts 140 and second circulation air ducts 142. The ventilation and air conditioning apparatus 100 can circulate air between the internal space 130 and the bathroom 10 through the first circulation air duct 140 or the second circulation air duct 142 by operating the circulation fan 113.

[0022] The second heat exchange space 132 is a space having the second heat exchanger 121. The second heat exchanger 121 constitutes a refrigeration cycle 102 described later and performs heat exchange with the air present in the second heat exchange space 132.

[0023] The suction space 133 is a space for taking in the air sucked from the bathroom 10. The suction port 103 is an opening provided in the suction space 133, and the air of the bathroom 10 sucked through the suction port 103 via the bathroom suction opening 11 provided on the ceiling surface of the bathroom 10 is taken into the suction space 133.

[0024] In the suction space 133, a suction temperature sensor 124 installed near the suction port 103 is installed in the above-described first circulation air duct 140 (see FIG. 4(a)) and second circulation air duct 142 (see FIG. 4(c)). The suction temperature sensor 124 detects the temperature of the air near the suction port 103. The temperature detected by the suction temperature sensor 124 is input to a control unit 119 described later.

[0025] Here, since the air near the suction port 103 is the air sucked from the bathroom 10, the temperature detected by the suction temperature sensor 124 is the temperature of the air sucked from the bathroom 10. In the following description, the temperature detected by the suction temperature sensor 124 is referred to as the bathroom suction temperature.

[0026] The air supply space 134 is a space that takes in air sucked in from the living space 13 other than the bathroom 10. The air supply port 107 is an opening provided in the air supply space 134, and is connected via the air supply duct D1 to the living space suction opening 14 provided on the ceiling surface of the living space 13. The air of the living space 13 sucked in from the living space suction opening 14 is taken into the air supply space 134 from the air supply port 107 via the air supply duct D1.

[0027] The exhaust space 135 is a space that takes in air exhausted from the ventilation and air conditioning device 100. The exhaust port 108 is an opening provided in the exhaust space 135, and is for connecting the exhaust space 135 (internal space 130) and the outside of the house 1. Specifically, the exhaust port 108 is connected via the exhaust duct D4 to the outer wall opening provided on the outer wall of the house 1.

[0028] An exhaust fan 114 is provided in the exhaust space 135. The exhaust fan 114 exhausts the air in the exhaust space 135 to the outside via the exhaust port 108. That is, when the exhaust space 135 is turned on, the air in the exhaust space 135 is exhausted to the outside of the house 1 via the exhaust port 108, the exhaust duct D4, and the outer wall opening.

[0029] As shown in Fig. 3(a), the internal space 130 has a plurality of dampers for changing the communication state of the partitioned first heat exchange space 131, second heat exchange space 132, suction space 133, air supply space 134, and exhaust space 135. That is, a first damper 109, a second damper 111, a third damper 112, and a fourth damper 116 are provided in the internal space 130.

[0030] Depending on its state, the first damper 109 switches the space communicating with the first heat exchange space 131 between the second heat exchange space 132 and the suction space 133. That is, when the first damper 109 is in the first state (for example, the state shown in Fig. 3(a)), the first heat exchange space 131 and the second heat exchange space 132 are made to communicate. Also, when the first damper 109 is in the second state (for example, the state shown in Fig. 4(c)), the first heat exchange space 131 and the suction space 133 are made to communicate.

[0031] The second damper 111 switches the communication state between the second heat exchange space 132 and the suction space 133 according to its state. That is, when the second damper 111 is in the open state (for example, the state shown in FIG. 4(a)), the second heat exchange space 132 and the suction space 133 are in a communicating state. Also, when the second damper 111 is in the closed state (for example, the state shown in FIG. 3(a)), the second heat exchange space 132 and the suction space 133 are in a non-communicating state.

[0032] The third damper 112 switches the communication state between the air supply space 134 and the second heat exchange space 132 according to its state. That is, when the third damper 112 is in the open state (for example, the state shown in FIG. 3(a)), the air supply space 134 and the second heat exchange space 132 are in a communicating state. Also, when the third damper 112 (for example, the state shown in FIG. 4(a)) is in the closed state, the air supply space 134 and the second heat exchange space 132 are in a non-communicating state.

[0033] The fourth damper 116 switches the communication state between the second heat exchange space 132 and the exhaust space 135 according to its state. That is, when the fourth damper 116 is in the open state (for example, the state shown in FIG. 3(a)), the second heat exchange space 132 and the exhaust space 135 are in a communicating state. Also, when the fourth damper 116 is in the closed state (for example, the state shown in FIG. 4(a)), the second heat exchange space 132 and the exhaust space 135 are in a non-communicating state.

[0034] Next, the refrigeration cycle 102 provided in the internal space 130 will be described. As shown in FIGS. 2(b) and 3(b), the refrigeration cycle 102 is composed of the above-described first heat exchanger 120 and second heat exchanger 121, a compressor 117, an expansion valve 118, and a pipe 123 connecting them. The pipe 123 is filled with a refrigerant, and the refrigerant circulates through the pipe 123. Also, the circulation direction of the refrigerant is switched by a four-way valve (not shown).

[0035] The compressor 117 compresses the refrigerant to make it high-temperature and high-pressure. The expansion valve 118 rapidly expands the refrigerant to make it low-temperature and low-pressure.

[0036] In the figure shown in FIG. 3(b), when the refrigerant is circulated counterclockwise by switching the four-way valve, the refrigerant that has been reduced to low temperature and low pressure by the expansion valve 118 is supplied to the second heat exchanger 121. The second heat exchanger 121 functions as an evaporator that absorbs heat from the air in the second heat exchange space 132 to cool the air and evaporates the refrigerant by the absorbed heat.

[0037] The refrigerant evaporated by the second heat exchanger 121 is sent to the compressor 117 and compressed to high temperature and high pressure. The refrigerant compressed to high temperature and high pressure is supplied to the first heat exchanger 120. The first heat exchanger 120 releases heat to the air in the first heat exchange space 131 to heat the air. Also, the first heat exchanger 120 releases heat from the refrigerant to liquefy the refrigerant. That is, the first heat exchanger 120 functions as a condenser.

[0038] The refrigerant liquefied by the first heat exchanger 120 is sent to the expansion valve 118. In this way, the refrigeration cycle 102 cools the air in the second heat exchange space 132 and heats the air in the first heat exchange space 131 by circulating the refrigerant as expansion valve 118 → second heat exchanger 121 → compressor 117 → first heat exchanger 120 → expansion valve 118 →....

[0039] On the other hand, when the refrigerant is circulated clockwise, that is, expansion valve 118 → first heat exchanger 120 → compressor 117 → second heat exchanger 121 → expansion valve 118 →... by switching the four-way valve, the first heat exchanger 120 functions as an evaporator and the second heat exchanger 121 functions as a condenser. Thereby, the refrigeration cycle 102 cools the air in the first heat exchange space 131 and heats the air in the second heat exchange space 132.

[0040] As shown in FIG. 3(a), the ventilation and air conditioning device 100 further has a control unit 119. The control unit 119 controls the operation of the ventilation and air conditioning device 100. Specifically, the control unit 119 controls the operations of the refrigeration cycle 102, the circulation fan 113, the exhaust fan 114, the first damper 109, the second damper 111, the third damper 112, the fourth damper 116, etc. according to the situation at that time.

[0041] Next, with reference to FIGS. 4(a) - (c), the set states of the refrigeration cycle 102, the circulation fan 113, the exhaust fan 114, the first damper 109, the second damper 111, the third damper 112, and the fourth damper 116 in various operation modes of the ventilation and air - conditioning apparatus 100 will be described.

[0042] First, FIG. 4(a) is a diagram showing the state of the ventilation and air - conditioning apparatus 100 when performing the dehumidification operation of the bathroom 10.

[0043] When the control unit 119 performs the dehumidification operation of the bathroom 10, the first damper 109 is set to the first state to put the first heat - exchange space 131 and the second heat - exchange space 132 in a communicating state. Also, the control unit 119 opens the second damper 111 to put the second heat - exchange space 132 and the suction space 133 in a communicating state. On the other hand, the control unit 119 closes the third damper 112 and the fourth damper 116 to make the second heat - exchange space 132 non - communicating with the air - supply space 134 and the exhaust space 135.

[0044] Thereby, the internal space 130 inside the ventilation and air - conditioning apparatus 100 communicates with the suction port 103 → the suction space 133 → the second heat - exchange space 132 → the first heat - exchange space 131 → the blow - out port 104. Thus, the ventilation and air - conditioning apparatus 100 forms a first circulation air passage 140 connecting the internal space 130 and the bathroom 10 via the suction port 103 and the blow - out port 104.

[0045] Then, the control unit 119 turns on the circulation fan 113. Thereby, the ventilation and air - conditioning apparatus 100 sucks the air in the bathroom 10 from the suction port 103, passes through the first circulation air passage 140, and blows it out again into the bathroom 10 from the blow - out port 104. That is, the circulation fan 113 circulates the air between the internal space 130 and the bathroom 10.

[0046] At this time, the control unit 119 operates the refrigeration cycle 102, causes the second heat exchanger 121 to function as an evaporator, and causes the first heat exchanger 120 to function as a condenser. As a result, the air in the second heat exchange space 132 on the first circulation air passage 140, that is, the air sucked from the bathroom 10, is cooled below the dew point temperature by the second heat exchanger 121. Therefore, the moisture in the air sucked from the bathroom 10 condenses, and the absolute humidity of the air is reduced.

[0047] The air with reduced absolute humidity is sent to the first heat exchange space 131 by the first circulation air passage 140. Then, the air is heated by the first heat exchanger 120, and the relative humidity is further reduced. Then, the air with reduced relative humidity is blown out from the air outlet 104 into the bathroom 10. In this way, the ventilation and air conditioning device 100 can perform a dehumidification operation to dehumidify the bathroom 10 by dehumidifying the air in the first circulation air passage 140 by the refrigeration cycle 102.

[0048] Note that when performing the dehumidification operation of the bathroom 10, the exhaust fan 114 is set to off. Thereby, it is possible to suppress the wasteful consumption of electric power by the exhaust fan 114.

[0049] Next, FIG. 4(b) is a diagram showing the state of the ventilation and air conditioning device 100 when performing the ventilation operation of the bathroom 10.

[0050] When performing the ventilation operation of the bathroom 10, the control unit 119 opens the second damper 111 to put the second heat exchange space 132 and the suction space 133 in a communicating state. Further, the control unit 119 opens the fourth damper 116 to put the second heat exchange space 132 and the exhaust space 135 in a communicating state. On the other hand, the control unit 119 sets the first damper 109 to the second state and closes the third damper 112 so that the second heat exchange space 132 is not in communication with the first heat exchange space 131 and the air supply space 134.

[0051] As a result, the internal space 130 of the ventilation and air conditioning device 100 communicates with the suction port 103 → the suction space 133 → the second heat exchange space 132 → the exhaust space 135 → the exhaust port 108. Therefore, the ventilation and air conditioning device 100 has a first exhaust air duct 141 that connects the bathroom 10, the internal space 130, and the outdoors through the suction port 103 and the exhaust port 108 (as well as the exhaust duct D4 connected to the exhaust port 108 and the outer wall port connected to the exhaust duct D4).

[0052] Then, the control unit 119 turns on the exhaust fan 114 and stops the operation of the refrigeration cycle 102. As a result, the ventilation and air conditioning device 100 sucks the air in the bathroom 10 into the internal space 130 from the suction port 103. The sucked air in the bathroom 10 passes through the first exhaust air duct 141 and is exhausted outdoors from the exhaust port 108 through the exhaust duct D4 without being cooled or heated by the refrigeration cycle 102.

[0053] Since the air in the bathroom 10 is exhausted by the ventilation and air conditioning device 100, the bathroom 10 is in a negative pressure state, and air is supplied from gaps or the like with the adjacent living space 13. Therefore, the ventilation and air conditioning device 100 can ventilate the bathroom 10. And when the temperature in the bathroom 10 is high, the temperature in the bathroom 10 can be lowered by the air supplied from the adjacent living space 13.

[0054] Note that when performing the ventilation operation of the bathroom 10, the circulation fan 113 is set to off. This is because when the ventilation and air conditioning device 100 performs the ventilation operation of the bathroom 10, the suction space 133 and the first heat exchange space 131 are in a communicating state depending on the state of the first damper 109, and thus the second circulation air duct 142 (see Fig. 4(c)) is formed in the internal space 130.

[0055] If the circulation fan 113 is set to on, the air sucked from the bathroom 10 through the suction port 103 will be blown out from the blowout port 104 into the bathroom 10 again through the second circulation air passage 142. In this case, there will be a problem that the ventilation capacity of the ventilation and air conditioning apparatus 100 is weakened. The control unit 119 avoids such a problem by setting the circulation fan 113 to off.

[0056] Also, the ventilation and air conditioning apparatus 100 suppresses the air to be exhausted from being heated or cooled by making the refrigeration cycle 102 non-operational, and suppresses the consumption of wasteful power.

[0057] Next, FIG. 4(c) is a diagram showing the state of the ventilation and air conditioning apparatus 100 when performing the cooling operation of the bathroom 10.

[0058] When performing the cooling operation of the bathroom 10, the control unit 119 sets the first damper 109 to the second state to put the first heat exchange space 131 and the suction space 133 in a communicating state, while putting the first heat exchange space 131 and the second heat exchange space 132 in a non-communicating state. Also, the control unit 119 sets the second damper 111 to the closed state to put the second heat exchange space 132 and the suction space 133 in a non-communicating state. On the other hand, the control unit 119 sets the third damper 112 and the fourth damper 116 to the open state to put the second heat exchange space 132 in a communicating state with the air supply space 134 and the exhaust space 135.

[0059] Thereby, the internal space 130 inside the ventilation and air conditioning apparatus 100 communicates with the suction port 103 → suction space 133 → first heat exchange space 131 → blowout port 104. Therefore, the ventilation and air conditioning apparatus 100 forms a second circulation air passage 142 that connects the internal space 130 and the bathroom 10 through the suction port 103 and the blowout port 104.

[0060] In addition, the interior space 130 of the ventilation and air conditioning device 100 communicates with the air supply port 107 → the air supply space 134 → the second heat exchange space 132 → the exhaust space 135 → the exhaust port 108. Therefore, a second exhaust air passage 143 is formed in the ventilation and air conditioning device 100 via the air supply port 107 and the exhaust port 108. Here, one end of the air supply port 107 is connected to the other end of the air supply duct D1 whose one end is connected to the living space suction opening 14. Also, one end of the exhaust port 108 is connected to the other end of the exhaust duct D4 whose one end is connected to the outer wall opening. Therefore, the second exhaust air passage 143 serves as an air passage connecting the living space 13, the interior space 130, and the outdoors.

[0061] Then, the control unit 119 turns on the circulation fan 113 and the exhaust fan 114. By the circulation fan 113, the ventilation and air conditioning device 100 sucks the air in the bathroom 10 from the suction port 103, passes through the second circulation air passage 142, and blows it out again into the bathroom 10 from the blowout port 104. That is, by the circulation fan 113, air circulates between the interior space 130 and the bathroom 10.

[0062] Also, by the exhaust fan 114, the ventilation and air conditioning device 100 sucks the air in the living space 13 into the interior space 130 from the air supply port 107 via the living space suction opening 14 and the air supply duct D1. The sucked air in the living space 13 is exhausted outdoors from the exhaust port 108 through the second exhaust air passage 143 via the exhaust duct D4 from the outer wall opening.

[0063] At this time, the control unit 119 operates the refrigeration cycle 102, causes the first heat exchanger 120 to function as an evaporator, and causes the second heat exchanger 121 to function as a condenser. Thereby, the air in the first heat exchange space 131 on the second circulation air passage 142, that is, the air sucked from the bathroom 10, is cooled by the first heat exchanger 120. Then, the cooled air is blown out from the blowout port 104 into the bathroom 10.

[0064] On the other hand, the air in the second heat exchange space 132 on the second exhaust air passage 143, that is, the air sucked from the living space 13, is heated by the second heat exchanger 121. Then, the heated air is exhausted outdoors from the exhaust port 108 through the exhaust duct D4 from the outer wall opening.

[0065] Here, in the refrigeration cycle 102 of the ventilation and air conditioning apparatus 100, in order to cause the first heat exchanger 120 to function as an evaporator, it is necessary to release the heat of the refrigerant from the second heat exchanger 121. For this reason, the ventilation and air conditioning apparatus 100 sucks air from the living space 13, heats it in the second heat exchanger 121, and exhausts it outdoors.

[0066] In this way, the ventilation and air conditioning apparatus 100 can cool the bathroom 10 by the refrigeration cycle 102.

[0067] (2) Chamber box As described above, the ventilation and air conditioning apparatus 100 is installed by being embedded in the floor space S above the bathroom 10. An air supply duct D1 and an exhaust duct D4 are connected to the ventilation and air conditioning apparatus 100. The air supply duct D1 extends to the living space suction opening 14 of the living space 13, and the exhaust duct D4 extends to the outer wall opening 40. Depending on the positional relationship among the bathroom 10, the living space suction opening 14, and the outer wall opening 40, it is necessary to intersect the air supply duct D1 and the exhaust duct D4 in the limited floor space S. Further, when the air supply duct D1 and the exhaust duct D4 are ducts having flexibility such as heat insulating ducts, it is required to make it easier to intersect the air supply duct D1 and the exhaust duct D4. Here, a chamber box 200 for realizing such an intersection will be described.

[0068] Figs. 5(a)-(b) are perspective views showing a structure in which the chamber box 200 is connected to the ventilation and air conditioning apparatus 100. In particular, Fig. 5(a) shows a structure when only the chamber box 200 is connected to the ventilation and air conditioning apparatus 100, and Fig. 5(b) shows a structure when the air supply duct D1 and the exhaust duct D4 are connected in addition to Fig. 5(a). In order to explain the structure of such a chamber box 200, Figs. 6(a)-(b) are also used here. Figs. 6(a)-(b) are perspective views showing the structure of the chamber box 200.

[0069] The main body 210 has a hollow structure. An inner connection port 212 and an outer connection port 214 are arranged at both ends of the main body 210. The inner connection port 212 has a cylindrical shape and can be connected to the air supply port 107 of the ventilation and air conditioning device 100. Also, the outer connection port 214 has a cylindrical shape and can be connected to the air supply duct D1. As shown in Fig. 5(b), when the inner connection port 212 is connected to the air supply port 107 and the air supply duct D1 is connected to the outer connection port 214, an air supply air passage from the air supply duct D1 through the chamber box 200 to the ventilation and air conditioning device 100 is formed.

[0070] The upper surface of the main body 210 is the upper surface 216, and the lower surface of the main body 210 is the bottom surface 220. A placement surface 218 recessed downward is provided on the upper surface 216. The placement surface 218 has a shape recessed, for example, in an inverted semi-cylindrical shape. The placement surface 218 does not have to be a complete inverted semi-circular shape, and it may be a shape in which the central portion is lower than both ends. As shown in Fig. 5(b), an exhaust duct D4 connected to the exhaust port 108 of the ventilation and air conditioning device 100 is placed on the placement surface 218. Since the chamber box 200 and the exhaust duct D4 overlap in the vertical direction, the exhaust air passage including the exhaust duct D4 and the air supply air passage including the chamber box 200 and the air supply duct D1 intersect in the vertical direction. When intersecting, since the exhaust duct D4 communicating with the outside is arranged on the upper side, even when rainwater enters from the outside, water is prevented from entering the ventilation and air conditioning device 100.

[0071] Here, the diameter of the placement surface 218 is made larger than the diameter of the exhaust duct D4. Therefore, the degree of freedom of the angle of the exhaust duct D4 with respect to the placement surface 218 when placing the exhaust duct D4 on the placement surface 218 is increased. When the air supply port 107 is called the first connection port, the exhaust port 108 is called the second connection port. When the air supply duct D1 is called the first duct, the exhaust duct D4 is called the second duct.

[0072] FIG. 7 is a cross-sectional view taken along the line A-A of the chamber box 200. That is, this is a cross-sectional view when the chamber box 200 is viewed from the upper surface 216 side. As described above, the inner connection port 212 and the outer connection port 214 are arranged at both ends of the main body 210. Also, the central axis of the cylindrical inner connection port 212 is shown as the first central axis C1, and the central axis of the cylindrical outer connection port 214 is shown as the second central axis C2. The first central axis C1 and the second central axis C2 are offset by an angle θ. The angle θ is, for example, in the range of 0° to 90°, particularly in the range of 30° to 60°. Therefore, the air supply air passage is bent on a horizontal plane in the chamber box 200. Further, the central axis of the mounting surface 218 is shown as the third central axis C3. The first central axis C1, the second central axis C2, and the third central axis C3 are oriented in different directions from each other.

[0073] FIGS. 8(a)-(b) are perspective views showing the air flow in the chamber box 200. FIGS. 8(a)-(b) show the inside of the main body 210, the inner connection port 212, and the outer connection port 214. Air from the air supply duct D1 (not shown) enters the main body 210 from the outer connection port 214 as the air supply flow 300. The air supply flow 300 travels through the main body 210 toward the inner connection port 212. At that time, the air supply flow 300 travels while bending along the mounting surface 218. The air supply flow 300 enters the ventilation and air conditioning device 100 (not shown) from the inner connection port 212 through the air supply port 107 (not shown).

[0074] According to the present embodiment, since the air supply port 107 and the air supply duct D1 of the ventilation and air conditioning device 100 are connected to the main body 210 and the exhaust duct D4 is placed on the mounting surface 218 of the main body 210, it is possible to suppress an increase in pressure loss without interfering with each air passage when the air supply duct D1 and the exhaust duct D4 cross each other. Also, since it is only a construction to place the exhaust duct D4 on the mounting surface 218, it is possible to suppress restrictions on the movement of routing. Further, while suppressing the loss of pressure loss at the crossing of the ducts, it is possible to suppress restrictions on the movement of duct routing, so that it is easy to cross the ducts in a limited space.

[0075] Since the first central axis C1 of the inner connection port 212, the second central axis C2 of the outer connection port 214, and the third central axis C3 of the placement surface 218 face different directions, the air supply duct D1 can be routed in various directions. Also, since the first central axis C1 of the inner connection port 212, the second central axis C2 of the outer connection port 214, and the third central axis C3 of the placement surface 218 face different directions, the exhaust duct D4 can be routed around other members arranged in the ceiling space.

[0076] In addition, since the diameter of the placement surface 218 is larger than the diameter of the exhaust duct D4, the exhaust duct D4 can be routed in various directions. Also, since the diameter of the placement surface 218 is larger than the diameter of the exhaust duct D4, the air supply duct D1 and the exhaust duct D4 can intersect even in the narrow space in the ceiling. Further, since the exhaust duct D4 communicating with the outside is positioned higher than the air supply duct D1, it is possible to suppress water from entering the ventilation and air conditioning apparatus 100 even when rainwater enters from the outside. Also, since water entry into the ventilation and air conditioning apparatus 100 is suppressed, the inside of the ventilation and air conditioning apparatus 100 can be maintained in a clean state.

[0077] Although the ventilation and air conditioning apparatus 100 has been described as an example, the ventilation and air conditioning apparatus 100 may be a ventilation device without an air conditioning function.

[0078] The outline of one aspect of the present disclosure is as follows. (Item 1) A main body (210) having a hollow structure, An inner connection port (212) for connecting the main body (210) to the first connection port (107) of the ventilation device (100), An outer connection port (214) for connecting a first duct (D1) to the main body (210), And a placement surface (218) recessed on the upper surface of the main body (210), A chamber box (200) on the placement surface (218) on which a second duct (D4) connected to the second connection port (108) of the ventilation device (100) can be placed.

[0079] (Item 2) The inner connection port (212) has a cylindrical shape, The outer connection port (214) has a cylindrical shape, The placement surface (218) has a shape in which the upper surface of the main body (210) is recessed in an inverted semi-cylindrical shape, The chamber box (200) according to claim 1, wherein a first central axis (C1) of the inner connection port (212), a second central axis (C2) of the outer connection port (214), and a third central axis (C3) of the placement surface (218) face different directions.

[0080] (Item 3) The chamber box (200) according to claim 2, wherein the diameter of the placement surface (218) is larger than the diameter of the second duct (D4).

[0081] (Item 4) The chamber box (200) according to any one of claims 1 to 3, wherein the second duct (D4) is an exhaust duct communicating with the outside.

[0082] As described above, the present disclosure has been described based on the embodiments. However, it can be easily inferred that the present disclosure is not limited to the above embodiments at all, and various improvements and modifications are possible within the scope not departing from the gist of the present disclosure.

Explanation of Reference Numerals

[0083] 1 house, 10 bathrooms, 11 bathroom suction openings, 12 bathroom discharge openings, 13 living space, 14 living space suction openings, outer wall opening, 100 ventilation and air conditioning device, 101 main body case, 102 refrigeration cycle, 103 suction port, 104 blowout port, 107 air supply port, 108 exhaust port, 109 first damper, 111 second damper, 112 third damper, 113 circulation fan, 114 exhaust fan, 116 fourth damper, 117 compressor, 118 expansion valve, 119 control unit, 120 first heat exchanger, 121 second heat exchanger, 123 piping, 124 suction temperature sensor, 130 internal space, 131 first heat exchange space, 132 second heat exchange space, 133 suction space, 134 air supply space, 135 exhaust space, 140 first circulation air duct, 141 first exhaust air duct, 142 second circulation air duct, 143 second exhaust air duct, 200 chamber box, 210 main body, 212 inner connection port, 214 outer connection port, 216 upper surface, 218 mounting surface, 220 bottom surface.

Claims

1. A main body with a hollow structure, an inner connection port for connecting the main body to a first connection port of a ventilation device, an outer connection port for connecting a first duct to the main body, and a placement surface formed by recessing the upper surface of the main body, wherein the placement surface has a chamber box on which a second duct connected to a second connection port of the ventilation device can be placed.

2. The inner connection port has a cylindrical shape, the outer connection port has a cylindrical shape, the placement surface has a shape formed by recessing the upper surface of the main body into an inverted semi-cylindrical shape, and the first central axis of the inner connection port, the second central axis of the outer connection port, and the third central axis of the placement surface face different directions. The chamber box according to Claim 1.

3. The chamber box according to Claim 2, wherein the diameter of the placement surface is larger than the diameter of the second duct.

4. The second duct is an exhaust duct communicating with the outside. The chamber box according to any one of Claims 1 to 3.

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