A humidifier

Abstract

The present invention relates to the technical field of humidifiers, specifically a humidifier, including a water tank, a water inlet hole is opened on the outer side of the water tank, and a sealing plug is arranged inside the water inlet hole, the top surface of the water tank is integrally connected with a mounting shell, the inner wall of the mounting shell is fixedly installed with a circulating water supply mechanism, the circulating water supply mechanism includes a piston cylinder fixedly connected to the inner wall of the mounting shell through a support plate, the inner wall of the piston cylinder is slidably connected with a piston, and the top surface of the piston is fixedly connected with a push rod. In this humidifier, the push rod moves upward to pull the piston, and the water in the water tank is pumped into the piston cylinder through the water inlet pipe. Then the push rod moves downward to push the piston, so that the water inside the piston cylinder passes through the reverse osmosis membrane and enters the water outlet pipe. When the water outlet pipe is connected to the right water supply pipe, the water supply mode of the heating chamber is turned on, and there is no need to heat the water in the entire water tank, thereby improving the heating efficiency, reducing the water hardness, and reducing the generation of scale inside the heating chamber.

Description

Technical Field

[0001] The invention relates to the technical field of humidifiers, in particular to a humidifier. Background Art

[0002] A humidifier is a household appliance used to increase the humidity in a room. It mainly converts water into water vapor through physical or chemical means and releases it into the air, thereby improving the humidity of the environment. Humidifiers on the market can be roughly divided into thermal evaporative humidifiers and ultrasonic humidifiers. Thermal evaporative humidifiers heat water to generate water vapor, and use a fan to send the vapor out, which has high energy consumption. Ultrasonic humidifiers convert electrical energy into high-frequency vibrations through a transducer to generate ultrasonic waves, which atomizes water into fine mist, which is then blown into the air by a fan to quickly increase the humidity of the air. However, ultrasonic humidifiers have higher requirements for water quality.

[0003] Currently, thermal evaporative humidifiers heat the water in the entire water tank, and the heating rate is slow. In addition, since thermal evaporative humidifiers do not have high requirements for water quality, in actual use, users directly use tap water. However, the hardness of tap water is usually relatively high. If tap water is used directly for a long time, the inside of the humidifier's water tank is prone to scaling, which further reduces the heating efficiency over time.

[0004] In order to solve the above problems, we have made improvements and proposed a humidifier. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a humidifier, comprising a water tank, wherein the outer side surface of the water tank is provided with a water inlet hole, and a sealing plug is provided inside the water inlet hole, the top surface of the water tank is integrally connected with a mounting shell, the inner wall of the mounting shell is fixedly provided with a circulating water supply mechanism, the circulating water supply mechanism comprises a piston cylinder fixedly connected to the inner wall of the mounting shell through a support plate, the inner wall of the piston cylinder is slidably connected with a piston, the top surface of the piston is fixedly connected with a push rod, the lower part of the side surface of the piston cylinder is connected with a water inlet pipe, the bottom end of the water inlet pipe extends to the inner bottom of the water tank, and the bottom surface of the piston cylinder is connected with a water outlet pipe;

[0007] The other end of the water outlet pipe is connected with a switching mechanism, which includes a rectangular block, a horizontal sliding cavity is provided inside the rectangular block, an inlet is provided at the inner upper part of the rectangular block, which is connected with the left side of the top surface of the sliding cavity, and the inlet of the rectangular block is connected with the water outlet pipe, a left outlet and a right outlet are provided at the inner lower part of the rectangular block, which are respectively connected with the left side and the right side of the bottom surface of the sliding cavity, a switching slider is slidably connected inside the sliding cavity, an S-shaped connecting pipe is provided inside the switching slider, and an adjustment mechanism is installed on the right side of the rectangular block;

[0008] A heating chamber is fixedly connected to the inner bottom surface of the installation shell, a steam delivery pipe is connected to the top surface of the heating chamber, an exhaust fan is installed inside the steam delivery pipe, and a driving mechanism for driving the piston and the exhaust fan is also installed on the inner wall of the installation shell.

[0009] As a preferred technical solution of the present invention, a reverse osmosis membrane is fixedly installed on the inner bottom of the piston cylinder, the port of the water inlet pipe is located between the reverse osmosis membrane and the piston, and one-way valves are installed on the water inlet pipe and the water outlet pipe.

[0010] As a preferred technical solution of the present invention, the left outlet of the rectangular block is connected to a left water pipe, the other end of the left water pipe extends to the interior of the water tank, the right outlet of the rectangular block is connected to a right water pipe, the other side of the right water pipe is connected to the heating chamber, and an electric heating plate is installed at the inner bottom of the heating chamber.

[0011] As a preferred technical solution of the present invention, the adjusting mechanism includes a bending rod, the left end of the bending rod is fixedly connected to the right side of the switching slider, the bending rod is slidably connected to the rectangular block, the right end of the bending rod is fixedly connected to a square plate, an inclined straight groove is provided on the front of the square plate, a first sliding rod is slidably connected inside the inclined straight groove of the square plate, one end of the first sliding rod is fixedly connected to a vertical rod, the vertical rod is slidably connected to the heating chamber, and one end of the vertical rod extending to the inside of the heating chamber is fixedly connected to a floating block.

[0012] As a preferred technical solution of the present invention, a return spring is fixedly connected between the right side of the rectangular block and the bending rod, a limiting rod is fixedly connected to the side of the piston cylinder, the limiting rod is slidably connected to the bending rod, and a stop block is fixedly connected to the other end of the limiting rod.

[0013] As a preferred technical solution of the present invention, a fixing plate is fixedly connected to the bottom surface of the rectangular block, and the fixing plate is fixedly connected to the inner bottom surface of the mounting shell.

[0014] As a preferred technical solution of the present invention, the driving mechanism includes a driving motor fixedly connected to the inner wall of the mounting shell, the output shaft of the driving motor is coaxially fixedly connected with a rotating rod, the rotating rod is rotatably connected to the steam delivery pipe, the outer wall of the rotating rod located inside the steam delivery pipe is coaxially fixedly connected with a driving bevel gear, the driving bevel gear is meshed with a driven bevel gear, the driven bevel gear is coaxially fixedly connected with the rotating shaft of the exhaust fan, a cross mounting support plate is installed on the inner wall of the steam delivery pipe, and the rotating shaft of the exhaust fan is rotatably connected to the middle part of the cross mounting support plate.

[0015] As a preferred technical solution of the present invention, the other end of the rotating rod is coaxially fixedly connected with a disc, the left side of the disc is fixedly connected with a second sliding rod, one end of the push rod extending to the outside of the piston cylinder is fixedly connected with a horizontal plate, a straight abutting groove is opened on the side of the horizontal plate, and the second sliding rod is slidably connected to the straight abutting groove of the horizontal plate, and the other end of the second sliding rod is fixedly connected with a baffle.

[0016] As a preferred technical solution of the present invention, the outlet of the steam delivery pipeline extends to the outside of the installation shell, and a protective orifice plate is fixedly installed at the outlet of the steam delivery pipeline.

[0017] The beneficial effects of the present invention are:

[0018] 1. This type of humidifier moves the push rod upward to pull the piston, and the water in the water tank is pumped into the piston cylinder through the water inlet pipe. Then the push rod moves downward to push the piston, so that the water inside the piston cylinder passes through the reverse osmosis membrane and enters the water outlet pipe. When the water outlet pipe is connected to the right water supply pipe, the water supply mode of the heating chamber is turned on. There is no need to heat the water in the entire water tank, which improves the heating efficiency.

[0019] Second, this type of humidifier is connected with the left outlet of the rectangular block through the inlet of the rectangular block, and the water outlet pipe is directly connected with the left water supply pipe to send the water back into the water tank, so that the water in the water tank can circulate and prevent the water in the water tank from being corrupted for a long time.

[0020] 3. In this type of humidifier, the push rod moves downward to push the piston, so that the water inside the piston cylinder passes through the reverse osmosis membrane, reducing the water hardness and reducing the generation of scale inside the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional schematic diagram of a humidifier of the present invention;

[0023] Figure 2 is a schematic top view of a humidifier of the present invention;

[0024] Figure 3 The present invention is a humidifier Figure 2 Schematic diagram of the cross-section at AA in the middle;

[0025] Figure 4 The present invention is a humidifier Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 5 The present invention is a humidifier Figure 3The enlarged schematic diagram of point B in the middle;

[0027] Figure 6 The present invention is a humidifier Figure 3 The enlarged schematic diagram at C in the middle;

[0028] Figure 7 It is a three-dimensional schematic diagram of the internal structure of a mounting shell of a humidifier of the present invention;

[0029] In the figure: 1. water tank; 2. mounting shell; 3. piston cylinder; 4. piston; 5. push rod; 6. water inlet pipe; 7. water outlet pipe; 8. rectangular block; 9. sliding chamber; 10. left water supply pipe; 11. right water supply pipe; 12. switching slider; 13. S-shaped connecting pipe; 14. heating chamber; 15. steam delivery pipe; 16. exhaust fan; 17. reverse osmosis membrane; 18. bending rod; 19. square plate; 20. first slide rod; 21. vertical rod; 22. floating block; 23. driving motor; 24. rotating rod; 25. active bevel gear; 26. driven bevel gear; 27. cross mounting support plate; 28. disc; 29. ​​second slide rod; 30. horizontal plate. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a humidifier comprises a water tank 1, a water inlet hole is provided on the outer side of the water tank 1, and a sealing plug is provided inside the water inlet hole. In addition, a water level gauge is installed inside the water tank 1, and the water level gauge can detect the water level in the water tank 1. The user can choose whether to add water to the water tank 1 according to the water level. The top surface of the water tank 1 is integrally connected with a mounting shell 2, and a circulating water supply mechanism is fixedly installed on the inner wall of the mounting shell 2. The circulating water supply mechanism comprises a piston cylinder 3 fixedly connected to the inner wall of the mounting shell 2 through a support plate, a piston 4 is slidably connected to the inner wall of the piston cylinder 3, a push rod 5 is fixedly connected to the top surface of the piston 4, a water inlet pipe 6 is connected to the lower part of the side of the piston cylinder 3, and the bottom end of the water inlet pipe 6 extends to the inner bottom of the water tank 1, and the bottom surface of the piston cylinder 3 is connected to a water outlet pipe 7;

[0032] A reverse osmosis membrane 17 is fixedly installed on the inner bottom of the piston cylinder 3, and the port of the water inlet pipe 6 is located between the reverse osmosis membrane 17 and the piston 4. Both the water inlet pipe 6 and the water outlet pipe 7 are installed with a one-way valve. The one-way valve on the water inlet pipe 6 can ensure that the water can only flow from the inside of the water tank 1 to the inside of the piston cylinder 3, and the one-way valve on the water outlet pipe 7 can ensure that the water can only flow from the inside of the piston cylinder 3 to the inside of the rectangular block 8.

[0033] like Figure 3 and Figure 4 As shown, the push rod 5 moves upward to pull the piston 4, and the water in the water tank 1 is pumped into the piston cylinder 3 through the water inlet pipe 6. Then the push rod 5 moves downward to push the piston 4, so that the water inside the piston cylinder 3 passes through the reverse osmosis membrane 17. The reverse osmosis membrane 17 can intercept calcium and magnesium ions in the water and enter the water outlet pipe 7. The piston 4 provides pressure for the water to pass through the reverse osmosis membrane 17.

[0034] The other end of the water outlet pipe 7 is connected to a switching mechanism, which includes a rectangular block 8. A horizontal sliding cavity 9 is opened inside the rectangular block 8. An inlet connected to the left side of the top surface of the sliding cavity 9 is opened in the inner upper part of the rectangular block 8, and the inlet of the rectangular block 8 is connected to the water outlet pipe 7. A left outlet and a right outlet connected to the left and right sides of the bottom surface of the sliding cavity 9 are opened in the inner lower part of the rectangular block 8. A switching slider 12 is slidably connected inside the sliding cavity 9, and an S-shaped connecting pipe 13 is opened inside the switching slider 12.

[0035] like Figure 3 As shown, the left outlet of the rectangular block 8 is connected to a left water pipe 10, the other end of which extends to the interior of the water tank 1, and the right outlet of the rectangular block 8 is connected to a right water pipe 11, the other side of which is connected to the heating chamber 14.

[0036] like Figure 4 As shown, when the switch slider 12 is in Figure 4 When the rectangular block 8 is in the middle position, the inlet of the rectangular block 8 is connected with the left outlet of the rectangular block 8, and the water outlet pipe 7 is directly connected with the left water supply pipe 10, which cooperates with the above-mentioned circulating water supply mechanism to send water back into the water tank 1, so that the water in the water tank 1 can circulate and prevent the water in the water tank 1 from being corrupted for a long time.

[0037] When the switching slider 12 moves to the left, the S-shaped connecting pipe 13 inside the switching slider 12 will connect the inlet of the rectangular block 8 with the right outlet of the rectangular block 8, further connecting the water outlet pipe 7 with the right water supply pipe 11, and cooperating with the above-mentioned circulating water supply mechanism to start the water supply mode of the heating chamber 14.

[0038] The right side of the rectangular block 8 is provided with an adjustment mechanism, which includes a bending rod 18, the left end of which is fixedly connected to the right side of the switching slider 12, the bending rod 18 is slidably connected to the rectangular block 8, the right end of the bending rod 18 is fixedly connected to a square plate 19, and the front side of the square plate 19 is provided with an inclined straight notch, which is Figure 5As shown, the square plate 19 is inclined to the upper left, and a first slide rod 20 is slidably connected inside the inclined straight groove. A vertical rod 21 is fixedly connected to one end of the first slide rod 20. The vertical rod 21 is slidably connected to the heating chamber 14. The vertical rod 21 extends to the inside of the heating chamber 14 and a floating block 22 is fixedly connected to one end.

[0039] A return spring is fixedly connected between the right side of the rectangular block 8 and the bending rod 18, a limit rod is fixedly connected to the side of the piston cylinder 3, the limit rod is slidably connected to the bending rod 18, and a stopper is fixedly connected to the other end of the limit rod. Figure 4 As shown, the return spring is in a stretched state at this time. When the floating block 22 tends to move downward, the return spring prompts the switching slider 12 to move leftward, and the limiting rod can limit the movement of the bending rod 18.

[0040] A fixing plate is fixedly connected to the bottom surface of the rectangular block 8 . The fixing plate is fixedly connected to the inner bottom surface of the mounting shell 2 . The fixing plate is used to fix the rectangular block 8 .

[0041] like Figure 4 and Figure 5 As shown, when the water level in the heating chamber 14 rises, the floating block 22 drives the vertical rod 21 to move upward, and further the first slide bar 20 abuts against the inclined straight notch, so that the square plate 19 moves to the right. When the water level in the heating chamber 14 reaches the set maximum water level, that is, Figure 5 The floating block 22 is shown to have reached its highest position, at which the inlet of the rectangular block 8 is connected to the left outlet of the rectangular block 8 .

[0042] The water level in the heating chamber 14 decreases, the float 22 and the vertical rod 21 move downward, and the first slide bar 20 contacts the inclined straight slot, causing the square plate 19 to move to the left, and further drives the switching slider 12 to move to the left through the bending rod 18. The S-shaped connecting pipe 13 inside the switching slider 12 connects the inlet of the rectangular block 8 with the right outlet of the rectangular block 8, and the heating chamber 14 stops the water supply mode, and the water inside the water tank 1 starts the circulation mode.

[0043] A heating chamber 14 is fixedly connected to the inner bottom surface of the installation shell 2, and an electric heating plate is installed on the inner bottom of the heating chamber 14. A thermal insulation sponge layer can be provided on the outside of the heating chamber 14 to enhance the thermal insulation capacity of the heating chamber 14. The top surface of the heating chamber 14 is connected to a steam delivery pipe 15, and an exhaust fan 16 is installed inside the steam delivery pipe 15. A driving mechanism for driving the piston 4 and the exhaust fan 16 is also installed on the inner wall of the installation shell 2.

[0044] like Figure 3 As shown, the electric heating plate inside the heating chamber 14 heats the water, and the generated water vapor is drawn to the outlet of the steam delivery pipe 15 through the exhaust fan 16, and finally sprayed into the air to humidify the surrounding environment.

[0045] The driving mechanism includes a driving motor 23 fixedly connected to the inner wall of the mounting shell 2, the output shaft of the driving motor 23 is coaxially fixedly connected to a rotating rod 24, the rotating rod 24 is rotatably connected to the steam delivery pipe 15, the outer wall of the rotating rod 24 located inside the steam delivery pipe 15 is coaxially fixedly connected to a driving bevel gear 25, the driving bevel gear 25 is meshed with a driven bevel gear 26, the driven bevel gear 26 is coaxially fixedly connected to the rotating shaft of the exhaust fan 16, a cross mounting support plate 27 is installed on the inner wall of the steam delivery pipe 15, and the rotating shaft of the exhaust fan 16 is rotatably connected to the middle part of the cross mounting support plate 27.

[0046] like Figure 7 As shown, the driving motor 23 drives the rotating rod 24 to rotate, and the rotating rod 24 further drives the exhaust fan 16 to rotate through the cooperation between the driving bevel gear 25 and the driven bevel gear 26 to extract the water vapor.

[0047] The other end of the rotating rod 24 is coaxially fixedly connected with a disc 28, and the left side of the disc 28 is fixedly connected with a second sliding rod 29. One end of the push rod 5 extending to the outside of the piston cylinder 3 is fixedly connected with a horizontal plate 30. A straight abutting groove is provided on the side of the horizontal plate 30, and the second sliding rod 29 is slidably connected to the straight abutting groove of the horizontal plate 30. The other end of the second sliding rod 29 is fixedly connected with a baffle.

[0048] like Figure 6 As shown, the rotating rod 24 can also drive the disc 28 to rotate. During the rotation of the disc 28, the second sliding rod 29 on the disc 28 slides inside the abutting straight groove of the horizontal plate 30, thereby driving the horizontal plate 30 to move up and down, and further driving the push rod 5 to move back and forth up and down.

[0049] The outlet of the steam delivery pipeline 15 extends to the outside of the installation shell 2 , and a protective orifice plate is fixedly installed at the outlet of the steam delivery pipeline 15 .

[0050] like Figure 1 and Figure 2 As shown, the protective orifice plate at the outlet of the steam delivery pipeline 15 can prevent foreign objects from falling into the steam delivery pipeline 15.

[0051] A controller may be installed outside the mounting housing 2 , and the controller may be electrically connected to the water level meter, the electric heating plate and the driving motor 23 .

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A humidifier, comprising a water tank (1), wherein the outer side of the water tank (1) is provided with a water inlet hole, and a sealing plug is provided inside the water inlet hole, characterized in that: The top surface of the water tank (1) is integrally connected with a mounting shell (2), the inner wall of the mounting shell (2) is fixedly mounted with a circulating water supply mechanism, the circulating water supply mechanism comprises a piston cylinder (3) fixedly connected to the inner wall of the mounting shell (2) via a support plate, the inner wall of the piston cylinder (3) is slidably connected with a piston (4), the top surface of the piston (4) is fixedly connected with a push rod (5), the lower part of the side of the piston cylinder (3) is connected with a water inlet pipe (6), the bottom end of the water inlet pipe (6) extends to the inner bottom of the water tank (1), and the bottom surface of the piston cylinder (3) is connected with a water outlet pipe (7); The other end of the water outlet pipe (7) is connected to a switching mechanism, the switching mechanism comprising a rectangular block (8), a horizontal sliding cavity (9) is provided inside the rectangular block (8), an inlet is provided at the inner upper part of the rectangular block (8) and is connected to the left side of the top surface of the sliding cavity (9), and the inlet of the rectangular block (8) is connected to the water outlet pipe (7), a left outlet and a right outlet are provided at the inner lower part of the rectangular block (8) and are respectively connected to the left side and the right side of the bottom surface of the sliding cavity (9), a switching slider (12) is slidably connected inside the sliding cavity (9), an S-shaped connecting pipe (13) is provided inside the switching slider (12), and an adjustment mechanism is installed on the right side of the rectangular block (8); The bottom surface of the mounting shell (2) is fixedly connected to a heating chamber (14), the top surface of the heating chamber (14) is connected to a steam delivery pipe (15), an exhaust fan (16) is installed inside the steam delivery pipe (15), and a driving mechanism for driving the piston (4) and the exhaust fan (16) is also installed on the inner wall of the mounting shell (2).

2. A humidifier according to claim 1, characterized in that: A reverse osmosis membrane (17) is fixedly mounted on the inner bottom of the piston cylinder (3); a port of the water inlet pipe (6) is located between the reverse osmosis membrane (17) and the piston (4); and one-way valves are mounted on both the water inlet pipe (6) and the water outlet pipe (7).

3. A humidifier according to claim 1, characterized in that: The left outlet of the rectangular block (8) is connected to a left water supply pipe (10), the other end of which extends into the interior of the water tank (1); the right outlet of the rectangular block (8) is connected to a right water supply pipe (11), the other side of which is connected to a heating chamber (14); an electric heating plate is installed at the inner bottom of the heating chamber (14).

4. A humidifier according to claim 1, characterized in that: The adjustment mechanism comprises a bending rod (18), the left end of the bending rod (18) being fixedly connected to the right side of the switching slider (12), the bending rod (18) being slidably connected to the rectangular block (8), the right end of the bending rod (18) being fixedly connected to a square plate (19), the front side of the square plate (19) being provided with an inclined straight notch, the inclined straight notch of the square plate (19) being slidably connected to a first sliding rod (20), one end of the first sliding rod (20) being fixedly connected to a vertical rod (21), the vertical rod (21) being slidably connected to the heating chamber (14), and one end of the vertical rod (21) extending to the inside of the heating chamber (14) being fixedly connected to a floating block (22).

5. A humidifier according to claim 4, characterized in that: A return spring is fixedly connected between the right side of the rectangular block (8) and the bending rod (18), a limit rod is fixedly connected to the side of the piston cylinder (3), the limit rod is slidably connected to the bending rod (18), and a stop block is fixedly connected to the other end of the limit rod.

6. A humidifier according to claim 1, characterized in that: A fixing plate is fixedly connected to the bottom surface of the rectangular block (8), and the fixing plate is fixedly connected to the inner bottom surface of the mounting shell (2).

7. A humidifier according to claim 1, characterized in that: The driving mechanism comprises a driving motor (23) fixedly connected to the inner wall of the mounting shell (2); the output shaft of the driving motor (23) is coaxially fixedly connected to a rotating rod (24); the rotating rod (24) is rotatably connected to the steam delivery pipe (15); the outer wall of the rotating rod (24) located inside the steam delivery pipe (15) is coaxially fixedly connected to a driving bevel gear (25); the driving bevel gear (25) is meshed with a driven bevel gear (26); the driven bevel gear (26) is coaxially fixedly connected to the rotating shaft of the exhaust fan (16); a cross mounting support plate (27) is mounted on the inner wall of the steam delivery pipe (15); and the rotating shaft of the exhaust fan (16) is rotatably connected to the middle part of the cross mounting support plate (27).

8. A humidifier according to claim 7, characterized in that: The other end of the rotating rod (24) is coaxially fixedly connected to a disc (28), the left side of the disc (28) is fixedly connected to a second sliding rod (29), one end of the push rod (5) extending to the outside of the piston cylinder (3) is fixedly connected to a horizontal plate (30), a side of the horizontal plate (30) is provided with a contact straight groove, and the second sliding rod (29) is slidably connected to the contact straight groove of the horizontal plate (30), and the other end of the second sliding rod (29) is fixedly connected to a baffle.

9. A humidifier according to claim 1, characterized in that: The outlet of the steam delivery pipeline (15) extends to the outside of the installation shell (2), and a protective orifice plate is fixedly installed at the outlet of the steam delivery pipeline (15).

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