Full-automatic constant-pressure water replenishing device of heating ventilation air conditioner

Abstract

The utility model relates to the technical field of heating ventilation air conditioners, and discloses a full-automatic constant-pressure water replenishing device of a heating ventilation air conditioner. The device comprises a base, a constant-pressure tank and a water supply pipe connected with the constant-pressure tank are arranged on the base, two water supply pumps are arranged on the water supply pipe, a water replenishing tank connected with the constant-pressure tank is arranged at the top end of the constant-pressure tank, and two trigger type inductive switches are arranged in the water replenishing tank. A floating ball used for triggering the trigger type inductive switch is arranged in the water replenishing tank, a water replenishing pump is arranged on the base, and a water replenishing pipe is connected between the water replenishing pump and the water replenishing tank. According to the utility model, a water replenishing tank for buffering can be added to the constant-pressure tank, so that the starting frequency of the water replenishing pump is reduced while normal water replenishing of the constant-pressure tank is ensured, and the service life of the water replenishing pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, ventilation and air conditioning, and in particular to a full-automatic constant-pressure water replenishing device for heating, ventilation and air conditioning. Background Art

[0002] HVAC is an air conditioner with heating, ventilation and air conditioning functions. The functions of HVAC mainly include heating, ventilation and air conditioning. The HVAC fully automatic constant pressure water replenishment device is used as a pressure-stabilizing expansion water replenishment equipment in the heating and air-conditioning system. The existing HVAC fully automatic constant pressure water replenishment device is mainly composed of a constant pressure tank, a water replenishment pump, a water injection pipe, a water supply pipe, a water supply pump and an electronic control system.

[0003] When the high and low pressure difference of the existing system is small, after the water pump supplies water to the HVAC system, it will cause a large fluctuation in the system pressure, thereby reaching the lower pressure limit of the constant pressure tank. The system will mistakenly believe that the constant pressure tank is short of water, and start the water replenishment pump to replenish the constant pressure tank. Frequent starting of the water pump will affect the service life of the water pump. Therefore, it is necessary to propose a fully automatic constant pressure water replenishment device for HVAC. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a fully automatic constant-pressure water replenishing device for a heating, ventilation and air conditioning system.

[0005] The utility model is implemented by the following technical scheme: a base, a constant pressure tank and a water supply pipe connected to the constant pressure tank are arranged on the base, two water supply pumps are arranged on the water supply pipe, a water replenishment tank connected to the constant pressure tank is arranged on the top, two trigger-type induction switches are arranged in the water replenishment tank, a floating ball for triggering the trigger-type induction switch is arranged in the water replenishment tank, a water replenishment pump is arranged on the base, and a water replenishment pipe is connected between the water replenishment pump and the water replenishment tank.

[0006] As a further improvement of the above scheme, a water inlet valve pipe is provided on one side of the water make-up tank, one end of the water make-up pipe is fixedly connected to the water outlet of the water make-up pump, the other end of the water make-up pipe is connected to the water inlet valve pipe of the water make-up tank, and a water outlet valve pipe is provided at the bottom of the water make-up tank, and the water outlet valve pipe is fixedly connected to the water inlet of the constant pressure tank.

[0007] As a further improvement of the above scheme, a positioning rod is rotatably installed in the water replenishment tank, and the top and bottom ends of the positioning rod are rotatably sleeved with positioning seats, the two positioning seats are respectively fixedly connected to the top inner wall and bottom inner wall of the water replenishment tank, and the positioning rod passes through the float and is slidably connected to the float.

[0008] As a further improvement of the above scheme, a rotating rod is rotatably installed in the water outlet valve pipe, and a propeller and a first bevel gear are fixedly installed on the bottom and top ends of the rotating rod respectively. A driving rod is rotatably installed in the water replenishment tank, and second bevel gears are fixedly installed on both ends of the driving rod. A third bevel gear is fixedly sleeved on the positioning rod, and the two second bevel gears are respectively meshed with the first bevel gear and the third bevel gear.

[0009] As a further improvement of the above solution, a spacer is provided on the fixing sleeve of the positioning rod.

[0010] As a further improvement of the above scheme, an inlet and outlet are provided on the top of the water replenishment tank, and a valve cover is provided on the inlet and outlet. Four support rods distributed in a rectangular shape are fixedly connected to the bottom of the water replenishment tank, and the bottom ends of the four support rods are fixedly connected to the base.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model uses the water supply buffer of the constant pressure tank through the water supply tank, so that after the constant pressure tank supplies water to the HVAC system, the water in the water supply tank can be replenished in the constant pressure tank in time, so that the pressure in the constant pressure tank can be guaranteed, and at the same time, it can also be avoided that the water source is reduced and the pressure lower limit is reached after the water supply of the constant pressure tank, and the frequent starting of the water supply pump is avoided. Through the trigger induction switch and the float, the water supply pump can be triggered to start when the water supply tank is short of water, so as to realize the water supply of the water supply tank, and the whole process will not affect the constant pressure tank, and the constant pressure tank can be always in a full water state, so as to reduce the starting times of the water supply pump without affecting the constant pressure tank, so as to prolong the service life of the water supply pump.

[0013] By cooperating with structures such as a rotating rod and a propeller, when the water replenishment tank replenishes water into the constant pressure tank, the water flow can be used to drive the positioning rod to rotate, thereby preventing the float from getting stuck on the positioning rod and affecting the water replenishment of the water replenishment tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the fully automatic constant pressure water replenishment device for heating, ventilation and air conditioning of the utility model;

[0015] Figure 2 It is a cross-sectional view of the water supply tank in the fully automatic constant pressure water supply device for heating, ventilation and air conditioning of the utility model;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0017] Figure 4 for Figure 2 Schematic diagram of the enlarged portion B.

[0018] Description of main symbols:

[0019] 1. Base; 2. Constant pressure tank; 3. Water supply pipe; 4. Water supply pump; 5. Water supply tank; 6. Water supply pipe; 7. Water supply pump; 8. Trigger induction switch; 9. Positioning rod; 10. Float; 11. Rotating rod; 12. Propeller; 13. First bevel gear; 14. Driving rod; 15. Second bevel gear; 16. Third bevel gear; 17. Spacer. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Please combine Figures 1 to 4 The fully automatic constant pressure water replenishment device of the HVAC of this embodiment comprises: a base 1, a constant pressure tank 2 and a water supply pipe 3 connected to the constant pressure tank 2 are arranged on the base 1, two water supply pumps 4 are arranged on the water supply pipe 3, a water replenishment tank 5 connected to the constant pressure tank 2 is arranged at the top of the constant pressure tank 2, two trigger-type induction switches 8 are arranged in the water replenishment tank 5, the two trigger-type induction switches 8 are one up and one down, respectively used to control the opening and closing of the water replenishment pump 7, a float 10 for triggering the trigger-type induction switch 8 is arranged in the water replenishment tank 5, a water replenishment pump 7 is arranged on the base 1, and a water replenishment pipe 6 is connected between the water replenishment pump 7 and the water replenishment tank 5.

[0022] A water inlet valve pipe is provided on one side of the water replenishment tank 5, one end of the water replenishment pipe 6 is fixedly connected to the water outlet of the water replenishment pump 7, the other end of the water replenishment pipe 6 is connected to the water inlet valve pipe of the water replenishment tank 5, and a water outlet valve pipe is provided at the bottom of the water replenishment tank 5, and the water outlet valve pipe is fixedly connected to the water inlet of the constant pressure tank 2.

[0023] A positioning rod 9 is rotatably installed in the water replenishment tank 5, and the top and bottom ends of the positioning rod 9 are rotatably sleeved with positioning seats, and the two positioning seats are respectively fixedly connected to the top inner wall and the bottom inner wall of the water replenishment tank 5. The positioning rod 9 passes through the float 10 and is slidably connected to the float 10.

[0024] Through the above technical solution, the positioning rod 9 can position the float 10, so that the float 10 can rise and fall in situ with the water level, so that the float 10 can trigger the trigger sensor switch 8 when following the rise and fall of the water level. At the same time, the positioning rod 9 can rotate under the action of external force, so that the float 10 is not easily stuck on it.

[0025] A rotating rod 11 is rotatably installed in the water outlet valve pipe, and two tripods are fixedly installed in the water outlet valve pipe. The rotating rod 11 passes through the two tripods and is rotatably connected with the two tripods. A propeller 12 and a first bevel gear 13 are fixedly installed at the bottom and top of the rotating rod 11 respectively. A driving rod 14 is rotatably installed in the water replenishment tank 5. Two supporting frames are rotatably sleeved on the driving rod 11, and the two supporting frames are fixedly connected to the bottom inner wall of the water replenishment tank 5. Second bevel gears 15 are fixedly installed at both ends of the driving rod 14, and a third bevel gear 16 is fixedly sleeved on the positioning rod 9. The two second bevel gears 15 are respectively meshed with the first bevel gear 13 and the third bevel gear 16.

[0026] Through the above technical solution, when the water replenishing tank 5 replenishes water into the constant pressure tank 2, it can drive the positioning rod 9 to rotate in its own shape, so that the float 10 is not easily stuck on the positioning rod 9, thereby ensuring that the float 10 can smoothly follow the water level rise, thereby accurately triggering the trigger sensor switch 8.

[0027] A spacer 17 is fixedly sleeved on the positioning rod 9 .

[0028] Through the above technical solution, the spacer 17 can prevent the float 10 from contacting the second bevel gear 15 and the third bevel gear 16, playing a barrier role to prevent the float 10 from affecting the rotation of the second bevel gear 15, and also prevent the second bevel gear 15 from causing wear to the float 10.

[0029] An inlet and an outlet are provided on the top of the water replenishment tank 5 , and a valve cover is provided on the inlet and an outlet. Four support rods distributed in a rectangular shape are fixedly connected to the bottom of the water replenishment tank 5 , and the bottom ends of the four support rods are fixedly connected to the base 1 .

[0030] Through the above technical solution, the inlet and outlet and the valve cover can ensure the sealing of the water supply tank 5 while allowing maintenance personnel to enter the water supply tank 5 to perform maintenance work.

[0031] The implementation principle of a fully automatic constant pressure water replenishment device for HVAC in the embodiment of the present application is:

[0032] The first step: fill the water supply tank 5 with water in advance through the water supply pump 7 and the water supply pipe 6. When the water in the constant pressure tank 2 is delivered to the HVAC system through the water supply pump 4 and the water supply pipe 3, the water in the water supply tank 5 automatically flows into the constant pressure tank 2 through the water outlet valve pipe, thereby realizing automatic water replenishment of the constant pressure tank, thereby ensuring the pressure at the end of the constant pressure tank 2, and there is no need to start the water supply pump 7 for water replenishment;

[0033] The second step: when the water in the water supply tank 5 reaches the bottom, the float 10 follows the water level to drop to the position of the trigger-type induction switch 8 below, triggering the trigger-type induction switch 8 to start the water supply pump 7, thereby automatically replenishing water into the water supply tank 5, and when the float 10 follows the water level to rise to the position of the trigger-type induction switch 8 above, triggering the trigger-type induction switch 8 above, at this time the water supply pump 7 is turned off, and stops replenishing water into the water supply tank 5, thereby using the water supply tank 5 as a buffer to reduce the number of starts of the water supply pump 4 and ensure the service life of the water supply pump 4;

[0034] The third step: when the water in the water replenishment tank 5 flows into the constant pressure pipe 2 through the water outlet valve pipe, it will drive the propeller 12 to rotate, and then the propeller 12 will drive the positioning rod 9 to rotate through the rotating rod 11, the first bevel gear 13, the driving rod 14, the second bevel gear 15, and the third bevel gear 16, so as to prevent the float 10 from getting stuck on the positioning rod 9 and making it unable to trigger the trigger induction switch 8 as the water level drops, thereby ensuring that the water replenishment pump 7 can replenish water into the water replenishment tank 5 in time.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fully automatic constant pressure water supply device for HVAC, It is characterized in that include: A base, wherein a constant pressure tank and a water supply pipe connected to the constant pressure tank are arranged on the base, two water supply pumps are arranged on the water supply pipe, a water replenishment tank connected to the constant pressure tank is arranged at the top, two trigger-type induction switches are arranged in the water replenishment tank, a floating ball for triggering the trigger-type induction switch is arranged in the water replenishment tank, a water replenishment pump is arranged on the base, and a water replenishment pipe is connected between the water replenishment pump and the water replenishment tank.

2. The fully automatic constant pressure water replenishing device for HVAC as claimed in claim 1, It is characterized in that A water inlet valve pipe is provided on one side of the water replenishment tank, one end of the water replenishment pipe is fixedly connected to the water outlet of the water replenishment pump, the other end of the water replenishment pipe is connected to the water inlet valve pipe of the water replenishment tank, and a water outlet valve pipe is provided at the bottom of the water replenishment tank, and the water outlet valve pipe is fixedly connected to the water inlet of the constant pressure tank; a positioning rod is rotatably installed in the water replenishment tank, and the top and bottom ends of the positioning rod are rotatably sleeved with positioning seats, and the two positioning seats are respectively fixedly connected to the top inner wall and the bottom inner wall of the water replenishment tank, and the positioning rod passes through the float and is slidably connected to the float.

3. The fully automatic constant pressure water replenishing device for HVAC as claimed in claim 2, It is characterized in that A rotating rod is rotatably installed in the water outlet valve pipe, and a propeller and a first bevel gear are fixedly installed on the bottom and top ends of the rotating rod respectively. A driving rod is rotatably installed in the water replenishment tank, and second bevel gears are fixedly installed on both ends of the driving rod. A third bevel gear is fixedly sleeved on the positioning rod, and the two second bevel gears are respectively meshed with the first bevel gear and the third bevel gear.

4. The fully automatic constant pressure water replenishing device for HVAC as claimed in claim 2, It is characterized in that The fixing sleeve on the positioning rod is provided with a spacer.

5. The fully automatic constant pressure water replenishing device for HVAC as claimed in claim 1, It is characterized in that An inlet and an outlet are arranged on the top of the water replenishment tank, and a valve cover is arranged on the inlet and an outlet. Four support rods distributed in a rectangular shape are fixedly connected to the bottom of the water replenishment tank, and the bottom ends of the four support rods are fixedly connected to the base.

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