Ventilation system

Abstract

To obtain a ventilation system capable of improving ventilation efficiency for a ventilation target.SOLUTION: A ventilation system comprises a plurality of supply fans 15, a plurality of exhaust fans 16, a pair of first auxiliary blowers 17, a second auxiliary blower 18, and a pair of additional blowers 19. The plurality of supply fans 15 and the plurality of exhaust fans 16 generate main airflows in a first ventilation section 11 and a second ventilation section 12. Each first auxiliary blower 17 is installed in a first corner part 12c inside the second ventilation section 12. Each first auxiliary blower 17 generates an airflow in the first corner part 12c.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a ventilation system.

Background Art

[0002] In a conventional ductless air supply system, at least one cross-flow fan is installed in each of a plurality of air supply zones in a building. Each cross-flow fan generates a strip-shaped air current so as to reach into an adjacent air supply zone (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] In the conventional ductless air supply system as described above, the strip-shaped air current from the cross-flow fan reaches into an adjacent air supply zone through an opening between the air supply zones. For this reason, for example, behind the wall where the opening is provided, it is difficult for an air current to be generated, and air stagnation occurs, resulting in a decrease in the ventilation efficiency for the air supply zone.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain a ventilation system capable of improving the ventilation efficiency for a ventilation target.

Means for Solving the Problems

[0006] The ventilation system according to the present disclosure includes a main blower that generates a flow of air that enters the first ventilation compartment from the outside of the first ventilation compartment, enters the second ventilation compartment through an opening, and exits to the outside of the second ventilation compartment, via an intermediate wall provided with an opening, between the adjacent first ventilation compartment and the second ventilation compartment, and at least one auxiliary blower that generates a flow of air in a corner portion inside the second ventilation compartment.

Effect of the Invention

[0007] According to the ventilation system of the present disclosure, the ventilation efficiency for the ventilation target can be improved.

Brief Description of the Drawings

[0008]

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[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1 The ventilation system according to the first embodiment is applied to a large-scale logistics warehouse. The large-scale logistics warehouse includes a roadway and multiple warehouses. The multiple warehouses are lined up on either side of the roadway. Large-scale logistics warehouses come in a variety of forms, depending on the number and layout of the warehouses. An example of a warehouse, which is the smallest structural unit of a large-scale logistics warehouse, is described below.

[0010] 1 is a plan view showing an example of a warehouse in which a ventilation system according to Embodiment 1 is installed. The warehouse to be ventilated includes a first ventilation section 11, a second ventilation section 12, and a truck berth 13. The second ventilation section 12 is located between the first ventilation section 11 and the truck berth 13.

[0011] An intermediate wall 14 is provided between the first ventilation compartment 11 and the second ventilation compartment 12. That is, the first ventilation compartment 11 and the second ventilation compartment 12 are adjacent to each other via the intermediate wall 14. An opening 14a is provided in the center of the intermediate wall 14.

[0012] The interior of the first ventilation section 11 is divided into a first passage 11a and a pair of first storage areas 11b. The first passage 11a is located between the pair of first storage areas 11b.

[0013] The interior of the second ventilation section 12 is divided into a second passage 12a and a pair of second storage areas 12b. The second passage 12a is located between the pair of second storage areas 12b.

[0014] The first passage 11a and the second passage 12a are connected in a straight line through an opening 14a. The first passage 11a and the second passage 12a are passages through which forklifts pass. The pair of first storage areas 11b and the pair of second storage areas 12b are areas for storing items, respectively.

[0015] The truck berth 13 is a space where trucks are parked to load and unload cargo. The many squares in Figure 1 indicate the positions of pillars.

[0016] The ventilation system of the first embodiment includes a plurality of air supply fans 15, a plurality of exhaust fans 16, a pair of first auxiliary fans 17, a second auxiliary fan 18, and a pair of additional fans 19.

[0017] The plurality of air supply fans 15 are installed at the end of the first ventilation section 11 opposite to the intermediate wall 14. The plurality of air supply fans 15 take in air from the outside of the first ventilation section 11 into the inside of the first ventilation section 11.

[0018] The plurality of exhaust fans 16 are installed at the end of the second ventilation section 12 opposite to the intermediate wall 14. The plurality of exhaust fans 16 exhaust the air inside the second ventilation section 12 to the outside of the second ventilation section 12.

[0019] The plurality of intake fans 15 and the plurality of exhaust fans 16 generate main airflows in the first ventilation section 11 and the second ventilation section 12. That is, the plurality of intake fans 15 and the plurality of exhaust fans 16 are each the main blowers of the first embodiment.

[0020] The main air flow is an air flow that enters the first ventilation compartment 11 from outside the first ventilation compartment 11, enters the second ventilation compartment 12 through the opening 14a, and exits to the outside of the second ventilation compartment 12. Further, the main air flow inside the warehouse is an air flow that flows from the first ventilation compartment 11 toward the truck berth 13 along the first passage 11a and the second passage 12a.

[0021] Each first auxiliary blower 17 is installed in the first corner portion 12c inside the second ventilation compartment 12. The first corner portion 12c is a corner portion formed inside the second ventilation compartment 12 by the intermediate wall 14. Each first auxiliary blower 17 generates an air flow in the first corner portion 12c.

[0022] The second auxiliary blower 18 is installed in the second corner portion 12d inside the second ventilation compartment 12. The second corner portion 12d is a corner portion diagonal to the first corner portion 12c in the second ventilation compartment 12. The second auxiliary blower 18 generates an air flow in the second corner portion 12d.

[0023] Each additional blower 19 is installed on the extension of the air flow generated by the corresponding first auxiliary blower 17. Each additional blower 19 generates an air flow in the same direction as the corresponding first auxiliary blower 17.

[0024] FIG. 2 is an explanatory diagram schematically showing the wind speed distribution in the warehouse by the ventilation system of FIG. 1. The pair of first auxiliary blowers 17 generates an air flow parallel to the main air flow in the pair of first corner portions 12c. The pair of additional blowers 19 sends the air sent by the pair of first auxiliary blowers 17 to the downstream side of the main air flow.

[0025] The second auxiliary blower 18 generates an air flow orthogonal to the main air flow in the second corner portion 12d.

[0026] FIG. 3 is an explanatory diagram showing the analysis result of the initial air concentration when ventilation is performed only by the plurality of air supply fans 15 and the plurality of exhaust fans 16 of FIG. 1. The conditions of the warehouse used in the analysis are as follows.

[0027] Ceiling height: 6.5m Pillar spacing: 11m Required ventilation volume for the first ventilation section 11: 4719 m 3 / h or more Required ventilation volume for the second ventilation section 12: 7865 m 3 / h or more Required ventilation volume = required ventilation rate per hour 0.5 [times / h] x volume of each ventilation section [m 3 ]

[0028] 3 shows the degree of remaining initial air 20 minutes after the start of ventilation using only the multiple intake fans 15 and the multiple exhaust fans 16. From FIG. 3, it can be seen that the concentration of initial air is high at the four corners of the second ventilation section 12, and that the air is stagnant at the four corners of the second ventilation section 12.

[0029] Fig. 4 is an explanatory diagram showing the analysis results of the initial air concentration when ventilation is performed using the ventilation system of embodiment 1. The warehouse conditions and ventilation time are the same as those in Fig. 3. Fig. 4 shows that by using the ventilation system of embodiment 1, the initial air concentration at the four corners of the second ventilation section 12 is significantly reduced.

[0030] In this ventilation system, a pair of first auxiliary fans 17 are used to generate airflow at the pair of first corners 12c of the second ventilation section 12. Also, a second auxiliary fan 18 is used to generate airflow at the second corner 12d.

[0031] This allows air to be exchanged throughout the warehouse, improving ventilation efficiency for the target area, and also reducing the number of fans required.

[0032] Furthermore, since it is a ductless ventilation system that does not use ducts, it is possible to reduce initial costs and running costs, and it is also possible to eliminate the need to secure duct space.

[0033] Furthermore, each first auxiliary fan 17 generates an air flow at the first corner portion 12c. Therefore, an air flow can also be generated on the rear side of the intermediate wall 14 when viewed from the direction of the main airflow, and the ventilation efficiency of the entire second ventilation section 12 can be effectively improved.

[0034] The second auxiliary blower 18 also generates an air flow at the second corner portion 12d. Therefore, even if the second corner portion 12d is far from the exhaust fans 16, an air flow can be generated at the second corner portion 12d, and the ventilation efficiency of the entire second ventilation section 12 can be effectively improved.

[0035] Furthermore, each of the first auxiliary fans 17 is installed at the first corner 12c, which makes it easier for the air at the first corner 12c to merge with the main airflow. Furthermore, the second auxiliary fans 18 are installed at the second corner 12d, which makes it easier for the air at the second corner 12d to merge with the main airflow.

[0036] Furthermore, each additional fan 19 generates an airflow in the same direction as the corresponding first auxiliary fan 17. This supplements the blowing power of the first auxiliary fan 17, and enables the air in the first corner portion 12c to be more reliably discharged together with the main airflow to the outside of the second ventilation section 12. This allows the first auxiliary fan 17 to be made smaller.

[0037] Embodiment 2 Next, Fig. 5 is a plan view showing an example of a warehouse in which a ventilation system according to Embodiment 2 is installed. Fig. 6 is an explanatory diagram schematically showing the wind speed distribution in the warehouse using the ventilation system of Fig. 5.

[0038] In the second embodiment, each first auxiliary fan 17 is installed at a position away from the first corner portion 12c. Each first auxiliary fan 17 generates an air flow toward the first corner portion 12c. As shown in Fig. 6, the air blowing direction of each first auxiliary fan 17 in the second embodiment is opposite to the main airflow.

[0039] The second auxiliary blower 18 is installed at a position away from the second corner portion 12d. Then, the second auxiliary blower 18 generates an air flow toward the second corner portion 12d. As shown in FIG. 6, the blowing direction of the second auxiliary blower 18 in the second embodiment is a direction away from the main air flow.

[0040] In the second embodiment, the pair of additional blowers 19 in the first embodiment are not used. Other configurations in the second embodiment are the same as those in the first embodiment.

[0041] In such a ventilation system, each first auxiliary blower 17 generates an air flow toward the first corner portion 12c. Also, the second auxiliary blower 18 generates an air flow toward the second corner portion 12d.

[0042] Therefore, an air flow can be more reliably generated in each of the first corner portion 12c and the second corner portion 12d. Also, the air inside the second ventilation section 12 is agitated as a whole. Accordingly, the ventilation efficiency for the entire second ventilation section 12 can be effectively improved.

[0043] In the first and second embodiments, if a sufficient main air flow can be generated, either one of the plurality of supply blowers 15 and the plurality of exhaust blowers 16 may be omitted.

[0044] Embodiment 3. Next, FIG. 7 is a plan view showing an example of a warehouse in which the ventilation system according to the third embodiment is installed. FIG. 8 is an explanatory view schematically showing the wind speed distribution inside the warehouse by the ventilation system of FIG. 7.

[0045] In the third embodiment, a plurality of main blowers 21 are installed above the first passage 11a inside the first ventilation section 11. Also, in the third embodiment, the plurality of supply blowers 15 and the plurality of exhaust blowers 16 are omitted.

[0046] A plurality of air supply ports 11c are provided at an end of the first ventilation compartment 11 opposite to the intermediate wall 14. A plurality of exhaust ports 12e are provided at an end of the second ventilation compartment 12 opposite to the intermediate wall 14.

[0047] The plurality of main blowers 21 generate an air flow from the first ventilation compartment 11 through the opening 14a toward the second ventilation compartment 12. That is, the plurality of main blowers 21 create a pressure difference between the first ventilation compartment 11 and the second ventilation compartment 12 by making the first ventilation compartment 11 negative pressure and the second ventilation compartment 12 positive pressure.

[0048] Thereby, the plurality of main blowers 21 generate a main air flow in the first ventilation compartment 11 and the second ventilation compartment 12. In Embodiment 3, the outside air of the first ventilation compartment 11 enters the first ventilation compartment 11 through the plurality of air supply ports 11c. Also, the inside air of the second ventilation compartment 12 is discharged to the outside of the second ventilation compartment 12 through the plurality of exhaust ports 12e.

[0049] In this way, the plurality of main blowers 21 take in air from the outside of the first ventilation compartment 11 and push out the air in the second ventilation compartment 12 to the outside of the second ventilation compartment 12 by blowing air toward the opening 14a.

[0050] Other configurations in Embodiment 3 are the same as those in Embodiment 1.

[0051] Such a ventilation system can also achieve the same effects as those in Embodiment 1. Moreover, the installation location of the plurality of main blowers 21 only needs to be one location inside the first ventilation compartment 11.

[0052] Note that instead of the plurality of air supply fans 15 and the plurality of exhaust fans 16 in Embodiment 2, the plurality of main blowers 21 in Embodiment 3 may be used.

[0053] Embodiment 4. 9 is a plan view showing an example of a warehouse in which a ventilation system according to embodiment 4 is installed. In embodiment 4, a plurality of exhaust fans 16 are installed at the end of the truck berth 13 opposite to the second ventilation section 12.

[0054] A plurality of entrances and exits for trucks are provided between the end of the truck berth 13 opposite the second ventilation section 12 and the roadway. Each entrance and exit is opened and closed by a shutter (not shown). Each exhaust fan 16 is installed, for example, on a wall above the entrance and exit.

[0055] The main airflow in embodiment 4 is the flow of air that enters the first ventilation compartment 11 from outside the first ventilation compartment 11, enters the second ventilation compartment 12 through opening 14a, enters the truck berth 13 from the second ventilation compartment 12, and exits to the roadway outside the truck berth 13.

[0056] Other configurations in the fourth embodiment are the same as those in the first embodiment.

[0057] With this ventilation system, the same effects as those of the first embodiment can be obtained.

[0058] The plurality of exhaust fans 16 in the second embodiment may be installed at the end of the truck berth 13 opposite to the second ventilation section 12, as in the fourth embodiment.

[0059] Embodiment 5. 10 is a plan view showing an example of a warehouse in which a ventilation system according to embodiment 5 is installed. In embodiment 5, the multiple exhaust fans 16 in embodiment 4 are omitted. Also, multiple exhaust vents 13a are provided at the end of the truck berth 13 opposite to the second ventilation section 12.

[0060] Other configurations in the fifth embodiment are the same as those in the fourth embodiment.

[0061] FIG. 11 is an explanatory diagram showing the analysis result of the initial air concentration when ventilation is performed by the ventilation system of Embodiment 5. The conditions of the warehouse and the ventilation time are the same as those in FIG. 3. Comparing FIG. 11 with FIG. 3, it can be seen that by using the ventilation system of Embodiment 5, the concentration of the initial air at the four corners of the second ventilation section 12 is significantly reduced.

[0062] Thus, even when the main air flow is generated only by the plurality of exhaust fans 16, the air can be exchanged throughout the warehouse, and the ventilation efficiency for the ventilation target can be improved.

[0063] In addition, in Embodiment 2, similar to Embodiment 5, the plurality of exhaust fans 16 may be omitted, and a plurality of exhaust ports 13a may be provided at the end of the truck berth 13 on the side opposite to the second ventilation section 12.

[0064] Embodiment 6. Next, FIG. 12 is a plan view showing an example of a warehouse in which the ventilation system according to Embodiment 6 is installed. In Embodiment 6, the plurality of air supply fans 15 in Embodiment 4 are omitted. In addition, a plurality of air supply ports 11c are provided at the end of the first ventilation section 11 on the side opposite to the intermediate wall 14.

[0065] Other configurations in Embodiment 6 are the same as those in Embodiment 4.

[0066] FIG. 13 is an explanatory diagram showing the analysis result of the initial air concentration when ventilation is performed by the ventilation system of Embodiment 6. The conditions of the warehouse and the ventilation time are the same as those in FIG. 3. Comparing FIG. 13 with FIG. 3, it can be seen that by using the ventilation system of Embodiment 6, the concentration of the initial air at the four corners of the second ventilation section 12 is significantly reduced.

[0067] Thus, even when the main air flow is generated only by the plurality of air supply fans 15, the air can be exchanged throughout the warehouse, and the ventilation efficiency for the ventilation target can be improved.

[0068] In addition, in the second embodiment, similar to the sixth embodiment, a plurality of air supply fans 15 may be omitted, and a plurality of air supply ports 11c may be provided at an end of the first ventilation section 11 on the side opposite to the intermediate wall 14.

[0069] Further, in the first to sixth embodiments, each first auxiliary blower 17 may blow air from the ceiling toward the floor of the first corner portion 12c. Similarly, the second auxiliary blower 18 may blow air from the ceiling toward the floor of the second corner portion 12d. The blowing directions of the first auxiliary blower 17 and the second auxiliary blower 18 can be appropriately set regardless of the direction of the main air flow as long as air stagnation can be eliminated.

[0070] Further, in the first to sixth embodiments, one or more ventilation sections may be arranged in series after the second ventilation section 12. Also in this case, by appropriately installing the first auxiliary blower 17, the second auxiliary blower 18, the additional blower 19, etc., the ventilation efficiency of the entire warehouse can be improved.

[0071] Further, depending on the structure of the second ventilation section 12, the second auxiliary blower 18 may be omitted.

[0072] Further, depending on the arrangement of the first passage 11a, the second passage 12a, the opening 14a, etc., only the second auxiliary blower 18 may be installed and the first auxiliary blower 17 may be omitted.

[0073] Also, the number of the first auxiliary blowers 17 and the number of the second auxiliary blowers 18 are not particularly limited, and at least one auxiliary blower in total may be used.

[0074] Further, depending on the blowing force, position, etc. of the first auxiliary blower 17, the additional blower 19 may be omitted.

[0075] Also, the ventilation target is not limited to a warehouse. The size of the building to be ventilated is not limited either, but application to relatively large buildings such as warehouses and factories is particularly effective.

[0076] Although the preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0077] Various aspects of the present disclosure are summarized below as appendices.

[0078] (Appendix 1) a main blower that generates an air flow in a first ventilation compartment and a second ventilation compartment adjacent to each other via an intermediate wall having an opening, the air flow entering the first ventilation compartment from outside the first ventilation compartment, entering the second ventilation compartment through the opening, and exiting outside the second ventilation compartment; At least one auxiliary fan that generates an air flow in a corner portion inside the second ventilation section. A ventilation system equipped with: (Appendix 2) The ventilation system of claim 1, wherein the at least one auxiliary fan includes a first auxiliary fan that generates an air flow in a first corner portion, which is the corner portion formed inside the second ventilation compartment by the intermediate wall. (Appendix 3) The ventilation system of claim 2, wherein the at least one auxiliary fan further includes a second auxiliary fan that generates an air flow in a second corner portion that is diagonally opposite the first corner portion in the second ventilation section. (Appendix 4) 4. The ventilation system according to claim 1, wherein the at least one auxiliary fan is installed in the corner portion. (Appendix 5) an additional fan that is installed on the extension of the air flow generated by the auxiliary fan in the second ventilation section and generates an air flow in the same direction as the auxiliary fan; 5. The ventilation system of claim 4, further comprising: (Appendix 6) The ventilation system according to any one of claims 1 to 3, wherein the at least one auxiliary fan is installed at a position away from the corner portion in the second ventilation section and generates an air flow toward the corner portion. (Appendix 7) 7. The ventilation system of claim 1, wherein the main blower includes an intake fan that draws air from outside the first ventilation compartment into the first ventilation compartment. (Appendix 8) 8. The ventilation system of claim 1, wherein the main blower includes an exhaust fan that exhausts air from inside the second ventilation compartment to outside the second ventilation compartment. (Appendix 9) The ventilation system described in any one of Appendix 1 to Appendix 6, wherein the main blower is installed inside the first ventilation compartment and blows air toward the opening, thereby taking in air from outside the first ventilation compartment and pushing air from inside the second ventilation compartment to outside the second ventilation compartment. [Explanation of symbols]

[0079] 11 first ventilation section, 12 second ventilation section, 12c first corner section, 12d second corner section, 14 intermediate wall, 14a opening, 15 intake fan (main blower), 16 exhaust fan (main blower), 17 first auxiliary blower, 18 second auxiliary blower, 19 additional blower, 21 main blower.

Claims

1. a main blower that generates an air flow in a first ventilation compartment and a second ventilation compartment adjacent to each other via an intermediate wall having an opening, the air flow entering the first ventilation compartment from outside the first ventilation compartment, entering the second ventilation compartment through the opening, and exiting outside the second ventilation compartment; At least one auxiliary fan that generates an air flow in a corner portion inside the second ventilation section. A ventilation system equipped with:

2. 2. The ventilation system according to claim 1, wherein the at least one auxiliary fan includes a first auxiliary fan that generates an air flow in a first corner portion that is the corner portion formed inside the second ventilation compartment by the intermediate wall.

3. 3. The ventilation system according to claim 2, wherein the at least one auxiliary fan further includes a second auxiliary fan that generates an air flow in a second corner portion of the second ventilation section that is diagonally opposite the first corner portion.

4. The ventilation system according to any one of claims 1 to 3, wherein the at least one auxiliary blower is installed in the corner portion.

5. an additional fan that is installed on the extension of the air flow generated by the auxiliary fan in the second ventilation section and generates an air flow in the same direction as the auxiliary fan; The ventilation system of claim 4 further comprising:

6. 4. The ventilation system according to claim 1, wherein the at least one auxiliary blower is installed at a position away from the corner portion in the second ventilation section and generates an air flow toward the corner portion.

7. 4. The ventilation system of claim 1, wherein the main blower includes an air supply fan that draws air from outside the first ventilation compartment into the first ventilation compartment.

8. 4. The ventilation system according to claim 1, wherein the main blower includes an exhaust fan that exhausts air from inside the second ventilation compartment to outside the second ventilation compartment.

9. The ventilation system described in any one of claims 1 to 3, wherein the main blower is installed inside the first ventilation compartment and blows air toward the opening, thereby taking in air from outside the first ventilation compartment and pushing air from inside the second ventilation compartment to outside the second ventilation compartment.

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