Automatic constant-pressure water replenishing device

Abstract

The utility model provides an automatic constant-pressure water replenishing device which comprises a water storage tank provided with a water inlet end, a water outlet end and a water level gauge. The water storage tank internally comprises a water storage cavity, the water storage cavity is communicated with the water inlet end and the water outlet end, and the water storage cavity is further communicated with the water level gauge; the water inlet unit communicates with the water inlet end and is used for supplying water to the water storage cavity; the head end of the pressurizing unit communicates with the water outlet end, the tail end of the pressurizing unit communicates with an air conditioner system pipe network, and the pressurizing unit is used for supplementing water to the air conditioner system pipe network; the drainage unit is communicated with the water outlet end; one end of the pressure relief unit is communicated with the drainage unit, and the other end of the pressure relief unit is communicated with the tail end of the pressurization unit; the control box is electrically connected with the water inlet unit, the pressurization unit and the pressure relief unit; an air bag structure is abandoned, the water storage tank is innovatively used and connected with all the units, the control box sends control signals to the water inlet unit, the pressurizing unit and the pressure relief unit so as to control the water inlet unit to work to supply water into the water storage cavity, enough water is kept for water replenishing, and the water supply efficiency is improved. The pressurizing unit is controlled to work to supplement water to an air conditioning system pipe network, and the pressurizing unit is matched with the pressure relief unit to control the pressure during water supplement; in addition, the water storage cavity is further communicated with the water level gauge, so that a worker can observe the water level in the tank in a normal state.

Description

Technical Field

[0001] The utility model belongs to the technical field of water replenishment equipment for air conditioning systems, and in particular relates to an automatic constant-pressure water replenishment device. Background Art

[0002] The air conditioning circulating water system requires a stable pressure. Too high or too low pressure will have adverse effects on the air conditioning system. At present, an air conditioning constant pressure water replenishment and exhaust device is used to replenish water in the air conditioning system pipe network, such as the Chinese patent CN 208269361 U applied by the applicant in the past. The air conditioning constant pressure water replenishment and exhaust device consists of a normal pressure expansion tank, a booster unit, a pressure relief unit, an exhaust unit, a pressure sensor and a control unit.

[0003] Among them, the atmospheric expansion tank is equipped with an airbag inside. The airbag is easy to age and fail under high pressure for a long time. In addition, the medium stored in the airbag has an extrusion and corrosion effect on the airbag material, which is easy to cause the airbag to wear and reduce the service life. At the same time, the airbag needs to be regularly inspected and replaced, which increases maintenance costs. In addition, due to the existence of the airbag, it is impossible to observe the water level in the tank under normal circumstances, and it is impossible to observe the full water level and the water shortage level in the tank normally. For this reason, it is necessary to design a new structure of automatic constant pressure water replenishment device to replenish water for the air conditioning circulation system. Utility Model Content

[0004] In order to overcome the above technical defects, the utility model provides an automatic constant-pressure water replenishing device, which can replenish water to the pipe network of the air-conditioning system.

[0005] The utility model is implemented according to the following technical solutions:

[0006] The utility model provides an automatic constant pressure water replenishing device, which comprises:

[0007] A water storage tank, which is provided with a water inlet, a water outlet and a water level gauge; the water storage tank includes a water storage cavity, the water storage cavity is connected with the water inlet and the water outlet, and the water storage cavity is also connected with the water level gauge;

[0008] a water inlet unit, which is in communication with the water inlet end and is used to supply water to the water storage chamber;

[0009] A booster unit, the head end of which is connected to the water outlet, and the tail end of which is connected to the air conditioning system pipe network, for replenishing water to the air conditioning system pipe network;

[0010] A drainage unit, which is connected to the water outlet;

[0011] A pressure relief unit, one end of which is connected to the drainage unit and the other end of which is connected to the end of the pressurizing unit;

[0012] A control box is electrically connected to the water inlet unit, the pressure boosting unit and the pressure relief unit.

[0013] Compared with the prior art, the present application abandons the airbag structure and innovatively uses a water storage tank and installs and connects it with the above-mentioned units. The control box sends a control signal to the water inlet unit, the boost unit and the pressure relief unit to control the water inlet unit to supply water to the water storage chamber, maintain a sufficient amount of water for water replenishment, control the boost unit to replenish water to the air-conditioning system pipeline, and cooperate with the pressure relief unit to control the pressure during water replenishment. In addition, the water storage chamber is also connected to the water level gauge so that the staff can observe the water level in the tank under normal conditions.

[0014] In one embodiment, a first liquid level probe and a second liquid level probe are provided in the water storage chamber;

[0015] The water inlet unit includes a water inlet pipe, a water inlet solenoid valve and a water inlet Y-type filter;

[0016] The control box is electrically connected to the water inlet solenoid valve, the first liquid level probe and the second liquid level probe.

[0017] In one embodiment, a vacuum eliminator is provided on the top of the water storage tank, and the vacuum eliminator is communicated with the water storage chamber.

[0018] In one embodiment, the boosting unit includes at least one group of boosting modules, the boosting module includes a boosting pump, a boosting check valve and a water supply pipe, and the water supply pipe is connected to the boosting pump through the boosting check valve;

[0019] The control box is electrically connected to the boost pump.

[0020] In one embodiment, the pressure relief unit includes a pressure relief pipe and a pressure relief solenoid valve, one end of the pressure relief pipe is connected to the drainage unit, and the other end is connected to the water supply pipe;

[0021] The control box is electrically connected to the pressure relief solenoid valve.

[0022] In one embodiment, the drainage unit includes a drainage pipe and a drainage butterfly valve, wherein the drainage butterfly valve is arranged on the drainage pipe to divide the drainage pipe into a drainage front section and a drainage rear section;

[0023] The booster pump is communicated with the drainage front section, and the pressure relief pipe is communicated with the drainage rear section.

[0024] In one embodiment, the automatic constant pressure water replenishment device further comprises a pressure detection unit, and the pressure detection unit is arranged on the water replenishment pipe;

[0025] The pressure detection unit includes an electric contact pressure gauge and a pressure sensor;

[0026] The control box is electrically connected to the electric contact pressure gauge and the pressure sensor.

[0027] In one embodiment, the automatic constant-pressure water replenishing device further includes a control panel, and the control panel is electrically connected to the control box.

[0028] In one embodiment, the boosting unit further includes a water replenishment Y-type filter, and the water replenishment Y-type filter is connected to the boosting module.

[0029] In one embodiment, the water storage tank is made of SUS304 stainless steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0031] Figure 1 It is a schematic diagram of the automatic constant pressure water replenishing device of the utility model.

[0032] Description of reference numerals:

[0033] 1 water storage tank, 2 vacuum eliminator, 3 water level gauge, 4 booster pump, 5 booster check valve, 6 water supply pipe, 7 water supply Y-type filter, 8 water inlet solenoid valve, 9 water inlet Y-type filter, 10 pressure relief solenoid valve, 11 pressure relief pipe, 12 drain pipe, 13 drain butterfly valve, 14 first liquid level probe, 15 second liquid level probe, 16 electric contact pressure gauge, 17 pressure sensor, 18 control panel, 19 control box DETAILED DESCRIPTION

[0034] 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.

[0035] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0036] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0038] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0040] In the prior art air conditioning constant pressure water replenishment and exhaust device, an air bag is arranged inside the normal pressure expansion tank, and gas is pre-filled between the air bag and the inner wall of the expansion tank. The larger the pre-filled gas, the less water will enter the tank, and the amount of water replenished to the air conditioning system pipe network will be correspondingly less; and the air bag is easily aged and failed under high pressure for a long time, and the medium stored in the air bag has a squeezing and corrosive effect on the air bag material, which is easy to cause the air bag to wear and reduce the service life. At the same time, the air bag needs to be regularly inspected and replaced, increasing maintenance costs. In addition, due to the existence of the air bag, the water level in the tank cannot be observed under normal circumstances, and the full water level and the water shortage level in the tank cannot be observed normally.

[0041] In order to solve the above problems, the utility model provides an automatic constant pressure water replenishing device, which comprises:

[0042] A water storage tank 1 is provided with a water inlet, a water outlet and a water level gauge 3; the water storage tank 1 includes a water storage cavity, the water storage cavity is connected with the water inlet and the water outlet, and the water storage cavity is also connected with the water level gauge 3;

[0043] a water inlet unit, which is in communication with the water inlet end and is used to supply water to the water storage chamber;

[0044] A booster unit, the head end of which is connected to the water outlet, and the tail end of which is connected to the air conditioning system pipe network, for replenishing water to the air conditioning system pipe network;

[0045] A drainage unit, which is connected to the water outlet;

[0046] A pressure relief unit, one end of which is connected to the drainage unit and the other end of which is connected to the end of the pressurizing unit;

[0047] The control box 19 is electrically connected to the water inlet unit, the pressure boosting unit and the pressure relief unit.

[0048] Compared with the prior art, the present application abandons the airbag structure and innovatively uses a water storage tank 1 and installs and connects it with the above-mentioned units. The control box 19 sends a control signal to the water inlet unit, the boost unit and the pressure relief unit to control the water inlet unit to supply water to the water storage chamber, maintain a sufficient amount of water for water replenishment, control the boost unit to replenish water to the air-conditioning system pipeline, and cooperate with the pressure relief unit to control the pressure during water replenishment; in addition, the water storage chamber is also connected to the water level gauge 3 so that the staff can observe the water level in the tank under normal conditions.

[0049] In one embodiment, a first liquid level probe 14 and a second liquid level probe 15 are provided in the water storage chamber;

[0050] The water inlet unit includes a water inlet pipe, a water inlet solenoid valve 8 and a water inlet Y-type filter 9; the water inlet solenoid valve 8 and the water inlet Y-type filter 9 are arranged on the water inlet pipe;

[0051] The control box 19 is electrically connected to the water inlet solenoid valve 8 , the first liquid level probe 14 , and the second liquid level probe 15 .

[0052] Specifically, the first liquid level probe 14 is set at a first height of the water storage chamber, and the second liquid level probe 15 is set at a second height of the water storage chamber, and the second height is higher than the first height; when the liquid level height in the water storage chamber is lower than the first height, the first liquid level probe sends a low liquid level signal to the control box, and the control box controls the water inlet solenoid valve to open to supply water to the water storage chamber; when the liquid level height in the water storage chamber is higher than the second height, the second liquid level probe sends a high liquid level signal to the control box, and the control box controls the water inlet solenoid valve to close to stop supplying water to the water storage chamber.

[0053] In one embodiment, a vacuum eliminator 2 is provided on the top of the water storage tank 1, and the vacuum eliminator 2 is connected to the water storage chamber. The vacuum eliminator or vacuum breaker is actuated when the water inlet solenoid valve 8 opens to replenish water in the water storage tank, and automatically discharges the air in the water storage chamber out of the water storage tank; when the booster unit replenishes water to the air conditioning system network, the vacuum eliminator is actuated to automatically suck air into the tank without generating negative pressure, thereby ensuring that the air conditioning system network can be automatically replenished with water.

[0054] It should be noted that the airbag of the conventional normal pressure expansion tank is too thick, and the exhaust valve can only exhaust but not intake air, which makes it difficult for tap water pressure to be replenished into the airbag, and sometimes water leaks. However, after adopting the solution of this technology, the vacuum eliminator can both exhaust and intake air, eliminating negative pressure, making it easy for tap water to replenish the water storage tank and avoid entering the air conditioning system pipe network.

[0055] In one embodiment, the boosting unit includes at least one group of boosting modules, and the boosting module includes a boosting pump 4, a boosting check valve 5 and a water supply pipe 6, and the water supply pipe 6 is connected to the boosting pump 4 through the boosting check valve 5; the control box 19 is electrically connected to the boosting pump 4. Specifically, the boosting pump boosts the water from the water storage chamber 11, and flows into the water supply pipe through the boosting check valve, and prevents backflow. In addition, the working number of the boosting modules is controlled, for example, whether one group of boosting modules is working or two groups of boosting modules are working, so as to control the amount of pressurization.

[0056] In one embodiment, the pressure relief unit includes a pressure relief pipe 11 and a pressure relief solenoid valve 10, one end of the pressure relief pipe 11 is connected to the drainage unit, and the other end is connected to the water supply pipe 6;

[0057] The control box 19 is electrically connected to the pressure relief solenoid valve 10. When the pressure of the air conditioning system pipe network is too high, the pressure relief solenoid valve can be opened to discharge the water in the water supply pipe through the pressure relief pipe to the drainage unit for pressure relief.

[0058] In one embodiment, the drainage unit includes a drain pipe 12 and a drain butterfly valve 13, and the drain butterfly valve 13 is arranged on the drain pipe 12 to divide the drain pipe 12 into a front drainage section and a rear drainage section; the present application drains the water storage chamber by opening the drain butterfly valve.

[0059] The booster pump 4 is connected to the drainage front section, and has received and pressurized water from the water storage chamber; the pressure relief pipe 11 is connected to the drainage rear section to discharge the water from the water supply pipe.

[0060] In one embodiment, the automatic constant pressure water supply device further comprises a pressure detection unit, which is arranged on the water supply pipe 6 and is used to monitor the pressure of the air conditioning system pipe network;

[0061] The pressure detection unit includes an electric contact pressure gauge 16 and a pressure sensor 17;

[0062] The control box 19 is electrically connected to the electric contact pressure gauge 16 and the pressure sensor 17 .

[0063] In one embodiment, the automatic constant pressure water replenishment device also includes a control panel 18, and the control panel 18 is electrically connected to the control box 19. The control panel is preferably a touch screen, and the pressure monitoring value of the air conditioning system pipeline network can be set on the touch screen.

[0064] In one embodiment, the boosting unit further includes a water replenishment Y-type filter, and the water replenishment Y-type filter is connected to the boosting module.

[0065] In one embodiment, the water storage tank 1 is made of SUS304 stainless steel, which completely blocks sunlight, does not breed algae, keeps the water clean at all times, is not easily damaged, and has a long service life.

[0066] The working mode of the automatic constant pressure water replenishment device is as follows: the pressure sensor collects the pressure of the air conditioning system pipe network, and when the pressure of the air conditioning system pipe network is lower than the pump start pressure set by the control panel, the booster pump automatically starts the pump. When the collected pressure of the air conditioning system pipe network is higher than the pump stop pressure set by the control panel, the booster pump automatically stops the pump.

[0067] When the water level in the water tank is lower than the first liquid level probe, the first liquid level probe will send a signal to the control box, and the control box will send an instruction to the water inlet solenoid valve to open the valve, and the tap water will replenish the water tank through the water inlet pipe; when the water in the water tank is above the second liquid level probe, the second liquid level probe will send a signal to the control box, and the control box will send an instruction to the water inlet solenoid valve to close and stop replenishing the water tank; when the water level in the tank is lower than the first liquid level probe again, the above operation will be repeated to restart the uninterrupted replenishment of the water tank.

[0068] When the pressure of the air conditioning system network is lower than the pump start pressure set by the control panel, the control box sends a command to start the booster pump, and the pressure sensor feeds back the pressure to the control box in real time. The control box increases, decreases or stops the booster pump according to the pressure deviation. When the water in the water tank is not enough for the booster pump to pump, the liquid level probe at the bottom of the water tank will act and send a signal to the control box, which will issue a command to disconnect the booster pump to replenish water to the system to prevent the booster pump from running idle.

[0069] When the pressure of the air conditioning system network is higher than the pump stop pressure set on the control panel, the control box sends a command to stop the booster pump or reduce the operation of one booster pump.

[0070] When the pressure of the air conditioning system network is too high and needs to be relieved, there are two pressure relief methods. The pressure relief method that is triggered first will be used first. The first method is that when the air conditioning system network exceeds the pressure relief pressure of the control panel, the control box sends a command to open the pressure relief solenoid valve to relieve pressure. If it is lower than the pressure relief pressure, the pressure relief solenoid valve will be disconnected. The second method is that when the air conditioning system network exceeds the upper limit pressure set by the electric contact pressure gauge, the control box sends a command to open the pressure relief solenoid valve to relieve pressure. When the air conditioning system network pressure is lower than the lower limit of the electric contact pressure, the solenoid valve will be disconnected to achieve dual protection against overpressure.

[0071] A vacuum eliminator is installed on the top of the water tank. When the water inlet solenoid valve opens to replenish the water tank, the vacuum eliminator will operate to automatically discharge the air in the tank out of the tank; when the booster pump replenishes water to the system, the vacuum eliminator will operate to automatically suck air into the tank without generating negative pressure, ensuring that the air-conditioning system can be automatically replenished with water; a glass tube water level gauge is installed on the side, which can clearly observe the water level in the water tank.

[0072] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An automatic constant pressure water replenishing device, characterized in that: include: A water storage tank, which is provided with a water inlet, a water outlet and a water level gauge; the water storage tank includes a water storage cavity, the water storage cavity is connected with the water inlet and the water outlet, and the water storage cavity is also connected with the water level gauge; a water inlet unit, which is in communication with the water inlet end and is used to supply water to the water storage chamber; A booster unit, the head end of which is connected to the water outlet, and the tail end of which is connected to the air conditioning system pipe network, for replenishing water to the air conditioning system pipe network; A drainage unit, which is connected to the water outlet; A pressure relief unit, one end of which is connected to the drainage unit and the other end of which is connected to the end of the pressurizing unit; A control box is electrically connected to the water inlet unit, the pressure boosting unit and the pressure relief unit.

2. The automatic constant pressure water replenishing device according to claim 1, characterized in that: A first liquid level probe and a second liquid level probe are arranged in the water storage chamber; The water inlet unit includes a water inlet pipe, a water inlet solenoid valve and a water inlet Y-type filter; The control box is electrically connected to the water inlet solenoid valve, the first liquid level probe and the second liquid level probe.

3. The automatic constant pressure water replenishing device according to claim 1 is characterized in that: A vacuum eliminator is arranged on the top of the water storage tank, and the vacuum eliminator is communicated with the water storage chamber.

4. The automatic constant pressure water replenishing device according to claim 1 is characterized in that: The boosting unit includes at least one group of boosting modules, and the boosting module includes a boosting pump, a boosting check valve and a water supply pipe, and the water supply pipe is connected to the boosting pump through the boosting check valve; The control box is electrically connected to the boost pump.

5. The automatic constant pressure water replenishing device according to claim 4 is characterized in that: The pressure relief unit includes a pressure relief pipe and a pressure relief solenoid valve, one end of the pressure relief pipe is connected to the drainage unit, and the other end is connected to the water supply pipe; The control box is electrically connected to the pressure relief solenoid valve.

6. The automatic constant pressure water replenishing device according to claim 5, characterized in that: The drainage unit includes a drainage pipe and a drainage butterfly valve, wherein the drainage butterfly valve is arranged on the drainage pipe to divide the drainage pipe into a drainage front section and a drainage rear section; The booster pump is communicated with the drainage front section, and the pressure relief pipe is communicated with the drainage rear section.

7. The automatic constant pressure water replenishing device according to claim 4, characterized in that: The automatic constant pressure water supply device also includes a pressure detection unit, which is arranged on the water supply pipe; the pressure detection unit includes an electric contact pressure gauge and a pressure sensor; The control box is electrically connected to the electric contact pressure gauge and the pressure sensor.

8. The automatic constant pressure water replenishing device according to claim 7, characterized in that: The automatic constant-pressure water replenishing device also includes a control panel, and the control panel is electrically connected to the control box.

9. The automatic constant pressure water replenishing device according to claim 4, characterized in that: The boosting unit further comprises a water replenishing Y-type filter, and the water replenishing Y-type filter is connected to the boosting module.

10. The automatic constant pressure water replenishing device according to claim 1, characterized in that: The water storage tank is made of SUS304 stainless steel.

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