Humidity control method and fresh air conditioning system

Abstract

The invention relates to a humidity control method and a fresh air conditioning system, and belongs to the technical field of air conditioning, the fresh air conditioning system comprises a shell, a multi-stage drying decompression device and a steam diffusion pipe, and the left end and the right end of the shell are provided with a steam inlet and a steam outlet respectively; the multi-stage drying and pressure reducing device is detachably arranged in the shell and used for receiving wet steam at the steam inlet, the multi-stage drying and pressure reducing device converts the wet steam into dry steam through the multi-stage throttling expansion effect of the multi-stage drying and pressure reducing device, and the dry steam is discharged through the steam outlet; the steam diffusion pipe is connected to a steam outlet of the shell and is used for diffusing the dry steam; the multi-stage drying and pressure reducing device has the beneficial effects that multi-stage pressure reducing and drying are carried out through the multi-stage drying and pressure reducing device, atmospheric pressure and dried steam are discharged from the steam outlet, and the air humidity in the environment can be well maintained.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to a humidity control method and a fresh air air conditioning system. Background Art

[0002] In industrial production and large public buildings, humidifiers are used by central air conditioning systems to increase humidity in workshops. Fresh air conditioning systems often require humidifiers to maintain air humidity and meet production process requirements. Currently, the most widely used humidifier in fresh air conditioning systems is the steam-water separation humidifier. Its core component is the steam-water separation tank. This simple mechanical structure uses baffles and the difference in steam and water gravity within the flowing container to separate steam and saturated water, then delivers steam to the air conditioning system to complete the humidification process.

[0003] However, existing steam-water separation steam humidifiers and corresponding humidity control methods have many drawbacks, as follows:

[0004] Low steam utilization rate and serious energy waste: In the traditional humidity control process, the superheated water in the supplied steam is not effectively utilized and is directly discharged as condensate, resulting in a steam waste rate of up to 18%, causing a large amount of energy loss and failing to meet energy-saving requirements.

[0005] A large amount of condensed water is produced, affecting system operation: the flow rate of the humidifier nozzle is usually maintained at around 10m / s. The high flow rate makes it difficult for the steam to fully mix with the circulating air in the air-conditioning system, and condensed water is easily produced during the mixing process; at the same time, the nozzle aperture is small (only 5-6mm), which is not conducive to steam diffusion, further aggravating the condensed water problem. Long-term accumulation will cause water to accumulate in the air conditioner, affecting the normal operation efficiency of the air-conditioning system. Summary of the Invention

[0006] The present invention provides a humidity control method and a fresh air air conditioning system, which are used to solve the technical problem that the fresh air air conditioning system in the prior art cannot well maintain the air humidity in the environment. The steam in the shell is subjected to multi-stage decompression and drying by a multi-stage drying and decompression device, so that atmospheric pressure and dried steam are discharged at the steam outlet, which can well maintain the air humidity in the environment.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A humidity-controlled fresh air air conditioning system comprising:

[0009] An outer shell, with a steam inlet and a steam outlet respectively provided at both ends of the outer shell;

[0010] The multi-stage drying and decompression device is detachably arranged in the housing and is used to receive the wet steam at the steam inlet. The multi-stage drying and decompression device converts the wet steam into dry steam through its own multi-stage throttling and expansion effect, and the dry steam is discharged through the steam outlet;

[0011] The steam diffusion pipe is connected to the steam outlet of the shell and is used for diffusing drying steam.

[0012] Optionally, the multi-stage drying and decompression device is a six-stage gas decompression structure, and the multi-stage drying and decompression device has six diaphragms, and each diaphragm is formed into a multi-stage drying and decompression device through positioning bolts. The multi-stage drying and decompression device is detachably arranged in the shell through the adjusting screws on the shell.

[0013] Optionally, the diaphragm has a convex block and a bottom plate, and along the direction from the steam inlet to the steam outlet, the bottom plate of the previous diaphragm abuts against the convex block of the next diaphragm to form a multi-stage drying and decompression device.

[0014] Optionally, the diaphragm has a steam exhaust hole for exhausting steam and a bypass exhaust hole for bypass exhaust. The steam exhaust hole realizes the discharge of drying steam in the multi-stage drying and decompression device, and the bypass exhaust hole realizes the bypass steam in the multi-stage drying and decompression device to pass to the chamber.

[0015] Optionally, a steam exhaust valve is provided on the shell, and the steam exhaust valve is used to exhaust the steam in the chamber.

[0016] Optionally, a diffusion hole is provided on a side wall of the steam diffusion tube, and the diffusion hole diffuses the drying steam in the steam diffusion tube.

[0017] A humidity control method comprises the following steps:

[0018] Step 1: introducing wet steam into the multi-stage drying and decompression device through the steam inlet;

[0019] Step 2: The multi-stage drying and decompression device reduces the steam pressure step by step to atmospheric pressure through a multi-stage throttling and expansion process;

[0020] Step 3: During the decompression process, the multi-stage drying and decompression device dries the wet steam;

[0021] Step 4: Discharge the water vapor or condensed water in the chamber to the outside of the housing.

[0022] Optionally, in step 2, the steam in the multi-stage drying and decompression device is bypassed into the chamber.

[0023] Optionally, in step 3, the steam outlet discharges dried steam at atmospheric pressure.

[0024] Optionally, in step 4, the steam in the chamber is exhausted through a steam exhaust valve.

[0025] Beneficial effects of the present invention:

[0026] The multi-stage drying and pressure-reducing device of the present invention is detachably mounted within a housing and receives wet steam from a steam inlet. The multi-stage drying and pressure-reducing device converts the wet steam into dry steam through its multi-stage throttling and expansion action, which is then discharged through a steam outlet. A steam diffusion pipe is connected to the steam outlet of the housing and is configured to diffuse the dry steam. The steam within the housing undergoes multi-stage pressure reduction and drying through the multi-stage drying and pressure-reducing device, achieving atmospheric pressure and dried steam discharge at the steam outlet, thereby effectively maintaining ambient air humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0029] Figure 2 Schematic diagram of the cross-sectional structure of the multi-stage drying and decompression device of the present invention;

[0030] Figure 3 For the present invention Figure 1 Schematic diagram of connecting external structure;

[0031] Figure 4 This is a diagram showing the steam recycling effect of the present invention.

[0032] Icon: 1-housing, 2-multi-stage drying and pressure reducing device, 3-chamber, 4-adjusting screw, 5-steam diffusion tube, 6-diffusion hole, 7-steam outlet, 8-exhaust valve, 9-positioning bolt, 10-steam exhaust hole, 11-bypass exhaust hole, 12-steam inlet, 13-diaphragm, 131-convex edge block, 132-base plate, 133-perforation. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0034] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installation," "connection," and "connection" should be understood in a broad sense. For example, they can refer to welding, bolting, or riveting; fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment provides a humidity-controlled fresh air air-conditioning system, including: an outer shell 1, a multi-stage drying and decompression device 2 and a steam diffusion pipe 5, and a steam inlet 12 and a steam outlet 7 are respectively provided at the left and right ends of the outer shell 1; the multi-stage drying and decompression device 2 is detachably arranged in the outer shell 1, and is used to receive wet steam at the steam inlet 12. The multi-stage drying and decompression device 2 converts the wet steam into dry steam through its own multi-stage throttling expansion effect, and the dry steam is discharged through the steam outlet 7; the steam diffusion pipe 5 is connected to the steam outlet 7 of the outer shell 1, and is used to diffuse dry steam.

[0039] The multi-stage drying and decompression device 2 is a six-stage gas decompression structure. The multi-stage drying and decompression device 2 has six diaphragms 13. Each diaphragm 13 is combined into a multi-stage drying and decompression device 2 through a positioning bolt 9. The multi-stage drying and decompression device 2 is detachably arranged in the housing 1 through the adjusting screw 4 on the housing 1. The adjusting screw 4 passes through the through-hole 133 to combine each diaphragm 13 into a multi-stage drying and decompression device 2.

[0040] like Figure 2As shown, the diaphragm 13 has a convex block 131 and a bottom plate 132. Along the direction from the steam inlet 12 to the steam outlet 7, the bottom plate 132 of the previous diaphragm 13 abuts against the convex block 131 of the next diaphragm 13 to form a multi-stage drying and decompression device 2.

[0041] The diaphragm 13 has a steam exhaust hole 10 for exhausting steam and a bypass exhaust hole 11 for bypass exhaust. The steam exhaust hole 10 realizes the discharge of drying steam in the multi-stage drying and decompression device 2, and the bypass exhaust hole 11 realizes the bypass steam in the multi-stage drying and decompression device 2 to pass to the chamber 3.

[0042] The housing 1 is provided with a steam exhaust valve 8 , which is used to exhaust the steam in the chamber 3 .

[0043] A diffusion hole 6 is provided on the side wall of the steam diffusion tube 5 , and the diffusion hole 6 diffuses the drying steam in the steam diffusion tube 5 .

[0044] Specifically, the working principle of the humidity-controlled fresh air air-conditioning system of the present invention is: each diaphragm 13 is pre-installed with a desiccant, high-pressure steam is introduced into the steam inlet 12, and the high-pressure steam enters the multi-stage drying and decompression device 2. The bypass exhaust holes 11 of each diaphragm 13 bypass the excess steam in each diaphragm 13 to the chamber 3, and the remaining steam in each diaphragm 13 flows out to the steam outlet 7 after drying. The role of the steam in the chamber 3 is that the steam in the chamber 3 can separate the outer shell 1 and the multi-stage drying and decompression device 2, that is, a water film is formed between the outer shell 1 and the multi-stage drying and decompression device 2, and the water film can separate the outer shell 1 and the multi-stage drying and decompression device 2.

[0045] Example 2

[0046] Based on Example 1, Figure 1 As shown, the working principle of the multi-stage throttling expansion effect is: the multi-stage drying and decompression device 2 is provided with 6 diaphragms 13 in sequence from left to right, and each diaphragm 13 is pre-installed with a desiccant, and the order from left to right is from the first diaphragm 13 to the sixth diaphragm 13.

[0047] High-pressure steam is introduced into the steam inlet 12, and the steam enters the chamber 3 through the bypass exhaust hole 11 of the first diaphragm 13. The steam is in the chamber 3. The remaining steam in the first diaphragm 13 is dried and then enters the second diaphragm 13 through the steam exhaust hole 10. In this way, the steam in the first diaphragm 13 is decompressed through the bypass exhaust hole 11 and dried after passing through the steam exhaust hole 10; the steam enters the chamber 3 through the bypass exhaust hole 11 of the second diaphragm 13 again. The steam is in the chamber 3. The remaining steam in the second diaphragm 13 is dried and then enters the third diaphragm 13 through the steam exhaust hole 10. In this way, the steam in the second diaphragm 13 is decompressed through the bypass exhaust hole 11 and dried after passing through the steam exhaust hole 10; and so on. The steam is decompressed and dried step by step until it reaches the sixth diaphragm 13. The steam in the sixth diaphragm 13 is steam with atmospheric pressure and after drying.

[0048] Example 3

[0049] Based on Example 1-Example 2, as Figure 3 As shown, the steam separated by the steam separation cylinder passes through the multi-stage drying and decompression device 2 in the shell 1 and the steam diffusion pipe 5 for diffusion.

[0050] Example 4

[0051] Based on Example 1-Example 2, this embodiment provides a humidity control method, including the following steps:

[0052] Step 1: Introduce wet steam into the multi-stage drying and decompression device 2 through the steam inlet 12;

[0053] Step 2: The multi-stage drying and decompression device 2 reduces the steam pressure step by step to atmospheric pressure through a multi-stage throttling and expansion process;

[0054] Step 3: During the decompression process, the multi-stage drying and decompression device 2 dries the wet steam;

[0055] Step 4: Discharge the water vapor or condensed water in the chamber 3 to the outside of the housing 1.

[0056] Furthermore, in step 2 , the steam in the multi-stage drying and decompression device 2 is bypassed into the chamber 3 .

[0057] In step 3, the steam outlet 7 discharges the dried steam having atmospheric pressure.

[0058] In step 4 , the steam in the chamber 3 is exhausted through the exhaust valve 8 .

[0059] High-pressure steam is introduced into the steam inlet 12 , and the steam in the shell 1 is subjected to multi-stage decompression and drying by the multi-stage drying and decompression device 2 , so that atmospheric pressure and dried steam are discharged from the steam outlet 7 .

[0060] like Figure 4 As shown, the multi-stage drying and decompression device 2 can utilize over 18% of the thermal energy in the saturated steam. This means that the heat of the steam in chamber 3 can be reused for secondary evaporation rather than being discharged. Only less than 5% of the condensed water in chamber 3 can be discharged, namely, through the steam exhaust valve 8. Compared to other steam humidifiers, the fresh air air conditioning system of the present invention can save 13% of steam. The fresh air air conditioning system of the present invention has a steam utilization rate of up to 95%, with only approximately 5% of the condensed water being discharged.

[0061] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A humidity-controlled fresh air air conditioning system, characterized in that: include: A shell (1), wherein two ends of the shell (1) are respectively provided with a steam inlet (12) and a steam outlet (7); a multi-stage drying and decompression device (2) detachably disposed in the housing (1) and configured to receive wet steam at the steam inlet (12); the multi-stage drying and decompression device (2) converts the wet steam into dry steam through its own multi-stage throttling and expansion action; and the dry steam is discharged through the steam outlet (7); The steam diffusion pipe (5) is connected to the steam outlet (7) of the shell (1) and is used for diffusing drying steam.

2. A humidity-controlled fresh air air conditioning system according to claim 1, characterized in that: The multi-stage drying and decompression device (2) is a six-stage gas decompression structure. The multi-stage drying and decompression device (2) has six diaphragms (13). Each of the diaphragms (13) is connected to form the multi-stage drying and decompression device (2) through a positioning bolt (9). The multi-stage drying and decompression device (2) is detachably arranged in the housing (1) through an adjusting screw (4) on the housing (1).

3. A humidity-controlled fresh air air conditioning system according to claim 2, characterized in that: The diaphragm (13) has a convex block (131) and a bottom plate (132). Along the direction from the steam inlet (12) to the steam outlet (7), the bottom plate (132) of the previous diaphragm (13) abuts against the convex block (131) of the next diaphragm (13) to form the multi-stage drying and decompression device (2).

4. A humidity-controlled fresh air air conditioning system according to claim 2, characterized in that: The diaphragm (13) is provided with a steam exhaust hole (10) for exhausting steam and a bypass exhaust hole (11) for bypass exhausting steam. The steam exhaust hole (10) discharges the drying steam in the multi-stage drying and decompression device (2), and the bypass exhaust hole (11) allows the bypass steam in the multi-stage drying and decompression device (2) to pass to the chamber (3).

5. A humidity-controlled fresh air air conditioning system according to claim 4, characterized in that: The housing (1) is provided with a steam exhaust valve (8), and the steam exhaust valve (8) is used to exhaust the steam in the chamber (3).

6. A humidity-controlled fresh air air conditioning system according to claim 1, characterized in that: A diffusion hole (6) is provided on the side wall of the steam diffusion tube (5), and the diffusion hole (6) diffuses the drying steam in the steam diffusion tube (5).

7. A humidity control method for executing a fresh air air conditioning system according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: introducing wet steam into the multi-stage drying and decompression device (2) through the steam inlet (12); Step 2: The multi-stage drying and decompression device (2) reduces the steam pressure step by step to atmospheric pressure through a multi-stage throttling and expansion process; Step 3: During the decompression process, the multi-stage drying and decompression device (2) dries the wet steam; Step 4: Discharge the water vapor or condensed water in the chamber (3) to the outside of the housing (1).

8. A humidity control method according to claim 7, characterized in that: In the step 2, the steam in the multi-stage drying and decompression device (2) is bypassed into the chamber (3).

9. A humidity control method according to claim 7, characterized in that: In step 3, the steam outlet (7) discharges the dried steam having atmospheric pressure.

10. A humidity control method according to claim 7, characterized in that: In step 4, the steam in the chamber (3) is discharged through the steam exhaust valve (8).

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