CN218599970U - Hydraulic center and air conditioner circulating water system with same - Google Patents

Abstract

The utility model relates to an air conditioning system field especially relates to a water conservancy center and have air conditioner circulating water system at this water conservancy center. A hydraulic center comprises a box body, a water return pipeline, a water outlet pipeline, a water return pipeline and a water replenishing pipeline, wherein the water return pipeline is arranged in the box body and connected with a main machine; a first water tank is connected between a water return pipeline connected with the main machine and a water outlet pipeline connected with the tail end in the box body, and a second water tank is connected between the water return pipeline connected with the tail end and the water outlet pipeline connected with the main machine; the inner end part of the water replenishing pipeline is connected to the water return pipeline or the second water tank connected with the tail end, and a water replenishing valve is arranged on the water replenishing pipeline. Two water tanks are integrated in the hydraulic center, so that stable operation of equipment is guaranteed, and the layout of internal pipelines and the utilization of space are facilitated.

Description

Hydraulic center and air conditioner circulating water system with same

Technical Field

The utility model relates to an air conditioning system field especially relates to a water conservancy center and have air conditioner circulating water system at this water conservancy center.

Background

The hydraulic module integrates a water pump, a valve piece, a filter, a constant-pressure water supplementing device, a water pump, an electric control cabinet and the like (almost all things except a main machine and a tail end) into a box; the water circulation system is suitable for circulating delivery of air conditioning water, cooling water and sanitary hot water of a central air conditioning water system and delivery of other water media. The existing hydraulic module can refer to a non-negative-pressure hydraulic module for an air conditioning unit, which is related to a Chinese utility model patent text with the bulletin number of 'CN 207797343U', and can refer to an air conditioning hydraulic module with a descaling function, which is related to a Chinese utility model patent text with the bulletin number of 'CN 208952480U'.

In the prior art, only the performing function in the pipeline is provided within the hydro module. After the water conservancy module is connected to in the closed circulation system, if the water distribution in the closed circulation system is inhomogeneous, then the water pump leads to the emergence of return water pipeline to suck the phenomenon easily when starting, and also leads to the water outlet pipe of air conditioner host computer to have the too big condition of instantaneous pressure easily simultaneously to lead to the load fluctuation of system great.

In addition, various accessories, of which the buffer water tank and the expansion tank are two, need to be installed in the air-conditioned household water machine system. The buffer water tank increases the running water amount in the air conditioning system, and can effectively solve the problems of load fluctuation caused by over-small system and frequent start and stop of a host.

The expansion tank plays a role in accommodating the water expansion amount of the system, so that the water pressure fluctuation of the system caused by the expansion or contraction of water can be reduced, and the safety and the reliability of the operation of the system are improved. As shown in figure 1, an expansion airbag 80 is arranged in a tank body 88 of the conventional expansion tank, water is filled in the expansion airbag 80, and air is filled between the expansion airbag 80 and the tank body 88; the bottom of the expansion air bag 80 is provided with a water outlet 87 communicated with the system, and an inflation inlet 90 is arranged above the tank body 88. Because of the expansion and contraction of the water in the heating system, when the hot water is heated up, the volume of the water in the system is increased, and when the expansion amount of the water is not contained, the water pressure in the cooling/heating system is increased, which affects the normal operation; at which time water in the system can be stored in the expansion tank. When the system leaks water or the system is cooled down due to some reason, the water pressure in the cold/hot supply system is reduced, and the water in the expansion tank enters the system to replenish water for the system.

The buffer water tank and the expansion tank in the existing air-conditioning water system are two independent accessories, so that the occupied space is large, and the connecting line is more complicated. In addition, the expansion tank shown in FIG. 1 may present two leak points: 1. an inflation inlet; 2. the opening end of the leather bag is tightly pressed and sealed with the flange.

Disclosure of Invention

In order to solve the above problem, a first object of the present invention is to provide a hydraulic center, which has two water tanks integrated therein, so as to ensure stable operation of the equipment and facilitate the layout of the internal pipeline and the utilization of the space.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hydraulic center comprises a box body, a water return pipeline, a water outlet pipeline, a water return pipeline and a water replenishing pipeline, wherein the water return pipeline is arranged in the box body and connected with a main machine; the water return pipeline of the main connecting machine is used for connecting a water outlet of the main air conditioner, and the water outlet pipeline of the main connecting machine is used for connecting a water inlet of the main air conditioner; the water return pipeline connected with the tail end is used for connecting the water outlet at the tail end, and the water outlet pipeline connected with the tail end is used for connecting the water inlet at the tail end; it is characterized in that; a first water tank is connected between a water return pipeline connected with the main machine and a water outlet pipeline connected with the tail end in the box body, and a second water tank is connected between the water return pipeline connected with the tail end and the water outlet pipeline connected with the main machine; the inner end part of the water replenishing pipeline is connected to the water return pipeline or the second water tank connected with the tail end, and a water replenishing valve is arranged on the water replenishing pipeline.

The utility model adopts the above technical scheme, the technical scheme relates to a hydraulic center, the water return pipeline of the host machine is arranged in the hydraulic center and is used for connecting the water outlet of the air conditioner host machine, and the water outlet pipeline of the host machine is used for connecting the water inlet of the air conditioner host machine; the water return pipeline connected with the tail end is used for being connected with the water outlet of the tail end, and the water outlet pipeline connected with the tail end is used for being connected with the water inlet of the tail end. In the scheme, a first water tank is connected between a water return pipeline connected with the main machine and a water outlet pipeline connected with the tail end in the box body, and a second water tank is connected between the water return pipeline connected with the tail end and the water outlet pipeline connected with the main machine; the first water tank and the second water tank are built in the box body of the hydraulic center and are connected in the system, so that the running water quantity in the air-conditioning system can be increased, and the running stability of the air-conditioning system is ensured; on the basis, the scheme has the following advantages:

1, the first water tank and the second water tank are arranged, and compared with the arrangement of a single water tank, the space occupation depth is smaller under the condition of the same capacity; furthermore, the depth of the occupied space of a single water tank is large, the limitation on the layout of the internal pipelines of the box body of the hydraulic center is large, and the layout and the space utilization of the internal pipelines of the hydraulic center are facilitated by the two water tanks.

And 2, the second water tank is connected with the water outlet pipeline of the main machine, so that sufficient running water is ensured in the water outlet pipeline of the main machine, and the phenomenon of suction in the water outlet pipeline of the main machine when the water pump is started is avoided.

3, first water tank sets up on connecing the wet return pipeline of host computer, can reduce the instantaneous water pressure in the wet return pipeline that connects the host computer when the water pump starts, alleviates the impact of liquid high pressure to the pipeline.

Preferably, an expansion air bag is arranged in the second water tank, and the expansion air bag is used for stabilizing the water pressure of the second water tank and the connecting pipeline thereof. As mentioned in the background art, an expansion tank is required to be arranged in the traditional hydraulic center, and the expansion tank can reduce the water pressure fluctuation of the system caused by the expansion of water, thereby improving the safety and the reliability of the operation of the system. And among this technical scheme, set up inflation gasbag in the second water tank, combine inflation airbag's inflation function promptly on the water storage function basis of second water tank to play the function of expansion tank.

According to the scheme, the expansion structure is arranged on the second water tank, and the existing second water tank and the expansion tank are combined functionally, so that the structure is simplified, and the occupied space of the system is reduced.

Preferably, a limit frame used for limiting the range of the expansion airbag is further arranged in the box body of the second water tank; the expansion air bag is arranged in the limiting frame, and the limiting frame is provided with a water permeable hole. This scheme adopts spacing frame to limit the inflation region of inflation gasbag to avoid the inflation gasbag that expands too big.

Preferably, a differential pressure balancing pipeline and a differential pressure balancing valve connected to the differential pressure balancing pipeline are further arranged in the box body; one end of the differential pressure balancing pipeline is connected to the water outlet pipeline or the first water tank at the connection end, and the other end of the differential pressure balancing pipeline is connected to the water return pipeline or the second water tank at the connection end. According to the technical scheme, the pressure difference balance pipeline and the pressure difference balance valve connected with the pressure difference balance pipeline can enable the pressure difference between the water outlet pipeline connected with the tail end and the water return pipeline connected with the tail end to be kept within a certain range, and unstable system operation caused by too large and too small pressure difference under the conditions of opening and closing of the two-way valve at the tail end of the air conditioner and the like is avoided.

Preferably, a flow sensor for acquiring the amount of water to be supplemented is arranged on the water supplementing pipeline, a first pressure sensor for acquiring the pressure of outlet water is arranged on the water outlet pipeline or the first water tank connected with the tail end, and a second pressure sensor for acquiring the pressure of return water is arranged on the water return pipeline or the second water tank connected with the tail end; the controller can judge whether the system has a water leakage condition or not based on the water supplementing amount of the flow sensor, the water outlet pressure obtained by the first pressure sensor and/or the water return pressure obtained by the second pressure sensor. In the technical scheme, the water supplementing pipeline is used for supplementing water when the running water quantity in the closed circulation system is reduced, a water supplementing valve on the water supplementing pipeline is used for controlling the on-off of the water supplementing pipeline, and the flow sensor is used for acquiring the water supplementing quantity. Furthermore, a first pressure sensor is arranged in the hydraulic center to acquire water outlet pressure, and a second pressure sensor acquires water return pressure.

Based on the water replenishing quantity, the water outlet pressure and the water return pressure which are obtained in unit time, the controller can judge whether the running water quantity in the closed circulation system is normally reduced or not and whether the condition of pipeline leakage exists or not.

In a further scheme, a first temperature sensor for acquiring the outlet water temperature is arranged on the water outlet pipeline or the first water tank at the connection tail end, and a second temperature sensor for acquiring the return water temperature is arranged on the return water pipeline or the second water tank at the connection tail end; the controller more accurately judges whether the system has water leakage conditions according to the historical data of the water outlet temperature and/or the water return temperature. According to the scheme, the influence of the water temperature in the system on the volume and the pressure of the liquid is considered, so that the outlet water temperature and the return water temperature are detected in the scheme, and the influence of the temperature on the water pressure is judged by combining the historical data of the outlet water temperature and/or the return water temperature; when judging whether the running water quantity in the closed circulation system is reduced normally, the influence of the temperature on the water pressure is eliminated, and whether the water leakage condition exists in the system is judged more accurately.

In a further scheme, a drain valve is arranged at the bottom of the first water tank and/or the second water tank, and when the controller judges that a water leakage condition exists based on collected data and logic reasoning, the water replenishing valve is closed, the drain valve is opened or the water replenishing valve is closed, and sound and light alarm is given.

Preferably, the top of the first water tank or the second water tank is provided with an exhaust device, the exhaust device is an automatic exhaust device or a spiral exhaust device, and the automatic exhaust device or the spiral exhaust device extends to the outer side of the first water tank or the second water tank and is communicated with the outside through an exhaust port. According to the scheme, the air exhausting device is arranged on the first water tank or the second water tank and can be used for exhausting the air bubbles in the pipeline and prolonging the service life of the pipeline, and the problems that air bubbles are likely to be generated when the pipeline is arranged, the pipeline is supplemented with water and running water is heated and oxygen in the air bubbles is extremely prone to corroding the pipeline are solved.

Preferably, a safety valve and/or an electric heating device is/are arranged on the first water tank and/or the second water tank, and a filter and/or a check valve is/are arranged on the water replenishing pipeline.

The safety valve in the scheme has the function that when the pressure of the medium in the water tank rises to exceed a specified value, the medium is discharged to the outside of the system; the electric heating device is used for performing auxiliary heating on the function of the air conditioner main machine, so that the heating requirement in winter is ensured; the filter is used for filtering the supplemented water; the check valve prevents the medium in the system from flowing back from the water replenishing pipeline.

Preferably, the number of the water outlet pipelines connected with the tail end is two, and one water outlet pipeline connected with the tail end is provided with a control valve. Two water outlet pipelines connected with the tail ends in the technical scheme are used for being connected with the tail ends of an air conditioner (such as a fan coil, a floor heating piece and a heating piece), wherein the fan coil can be used in winter and summer, and the floor heating piece and the heating piece can be used only in winter. Therefore, the scheme is provided with at least two water outlet pipelines connected with the tail end, one of the water outlet pipelines connected with the tail end can be selectively closed, and the flowing direction of the internal running water is controlled.

A second object of the utility model is to provide an air conditioner circulating water system, which comprises an air conditioner main machine, a hydraulic center and a tail end; the method is characterized in that: a hydraulic center as described above for the hydraulic center; the water return pipeline of the host is connected with the water outlet of the air-conditioning host, and the water outlet pipeline of the host is connected with the water inlet of the air-conditioning host; the water return pipeline connected with the tail end is connected with the water outlet at the tail end, and the water outlet pipeline connected with the tail end is connected with the water inlet at the tail end; the water pump is arranged on the air conditioner host, the hydraulic center or a system pipeline.

In a further preferred scheme, when the tail end comprises a fan coil, a floor heating and heating sheet, the fan coil is connected with the downstream of the water outlet pipeline of one of the tail ends, and the floor heating and heating sheet is connected in parallel with the downstream of the water outlet pipeline of the other tail end. When the tail end of an air conditioner connected with an air conditioner circulating water system comprises a fan coil, a floor heater and a heating sheet, as described above, the fan coil, the floor heater and the heating sheet are different in use seasons, so that the system connects the fan coil to the downstream of the water outlet pipeline of one terminal, and connects the floor heater and the heating sheet to the downstream of the water outlet pipeline of the other terminal in parallel; in the summer refrigeration environment, the valve can be closed through a control valve on the water outlet pipeline connected with the other end.

Drawings

Fig. 1 is a schematic view of the structure of a conventional expansion tank.

Fig. 2 is a first schematic structural diagram of the water tank in embodiment 1.

Fig. 3 is a schematic structural diagram ii of the water tank in embodiment 1.

Fig. 4 is a third schematic structural view of the water tank in embodiment 1.

Fig. 5 is a fourth schematic structural view of the water tank described in embodiment 1.

Fig. 6 is a schematic diagram of the hydraulic center connection involved in example 2.

Fig. 7 is a schematic connection diagram of an air-conditioning circulating water system according to embodiment 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

as shown in fig. 2 to 5, the present embodiment relates to a water tank with an inflatable air bag, including a housing 9; a water storage cavity is arranged inside the shell 9, and at least two water inlets and water outlets 91 communicated with the water storage cavity are arranged on the shell 9; an inflatable air bag 80 is also arranged inside the shell 9, and the inside of the inflatable air bag is filled with gas. The water storage cavity of the water tank is used for storing water, and the water tank is provided with two water inlets and outlets 91 communicated with the water storage cavity; when the water tank is connected to the system, part of the water circulates in the system and is used as a fluid medium; the water tank is adopted to store water, which is beneficial to ensuring the stability of the system. Furthermore, an expansion air bag is arranged in the tank body of the water tank, and the water pressure in the tank body and a system connected with the tank body is kept in a stable range through expansion and contraction of the expansion air bag, so that the safety and reliability of system operation are improved, and the function of the existing expansion tank is achieved.

In conclusion, according to the scheme, the expansion structure is arranged in the buffer water tank, and the existing buffer water tank and the expansion tank are combined in function, so that the structure is simplified, and the occupied space of the system is reduced.

In a further embodiment, a limit frame 81 for limiting the range of the inflated airbag 80 is arranged inside the housing 9; the inflatable air bag 80 is arranged in a limiting frame 81, and a water permeable hole 82 is formed in the limiting frame 81. Among this technical scheme, set up spacing frame 81 in the inside of casing, the gasbag that expands then sets up in the inside of spacing frame, through spacing frame restriction the gasbag scope that expands avoids the gasbag that expands overinflation. The limiting frame 81 is provided with a water permeable hole 82, which aims to communicate the water storage cavity of the shell with an expansion area framed by the limiting frame 81, so that the water pressure of the water storage cavity and a connecting pipeline thereof can be controlled based on the expansion and contraction of the expansion air bag.

As shown in fig. 2 to 4, the limiting frame 81 is fixed inside the housing 9, and a space enclosed by the limiting frame 81 and the inner wall of the housing 9 is the maximum space for the expansion of the inflatable airbag 80. In this case, the combination frame defines the expansion area of the expansion airbag by adopting the limit frame to connect and fix on the inner wall of the shell. The water inlet and outlet openings are shown in the figure as opening into the housing outside the expansion zone. The water inlet and outlet are arranged outside the expansion area, so that the expansion air bag can be ensured not to block the water inlet and outlet and influence the water inlet and outlet of the shell. In the specific scheme, the upper end edge of the limit frame 81 is connected to the top of the inner wall of the shell 9, and a gap 83 is formed between at least part of the outer wall of the limit frame 81 and the inner wall of the shell 9; the water inlet/outlet 91 may be disposed on the sidewall of the housing 9 or the top of the housing 9 corresponding to the gap 83. In the technical scheme, the water inlet and the water outlet are arranged in the gap area between the limiting frame and the inner wall of the shell, so that the interference of the limiting frame on the water inlet and the water outlet is avoided, and the water inlet and the water outlet efficiency are influenced.

In addition, the inflatable air bag 80 is provided with an inflating assembly 92, and the inflatable air bag is fixed on the shell 9 or an upper cover plate 98; in this embodiment, the inflation module 92 can inflate and deflate the inflatable airbag 80, and the inflatable airbag is always connected to the inflation module 92, so that the position of the inflatable airbag inside the box body is fixed.

On the basis of the above scheme, in consideration of the disassembly, assembly and replacement of the inflatable air bag 80, the following embodiments can be adopted:

as shown in fig. 2, the limiting frame 81 includes an upper frame 84 connected and fixed to the inner wall of the housing 9, and a detachable lower frame 85 connected to the upper frame 84. Among this technical scheme, go up the framework and be connected fixedly with shells inner wall, through the dismantlement of lower framework connect realize inside inflation gasbag dismouting and change.

As shown in fig. 3, the limiting frame 81 is an integrated frame, and the upper end of the limiting frame 81 is integrally connected and fixed to the top of the inner wall of the housing 9; the top of the housing 9 is provided with an air bag dismounting port 97 and an upper cover plate 98, and the air bag 80 and the inflation assembly 92 hermetically connected with the air bag 80 can be dismounted through the air bag dismounting port 97 and the upper cover plate 98. In the technical scheme, the limiting frame is integrated into a frame body and is fixedly connected with the inner wall of the shell, and disassembly cannot be achieved. In this case, the upper end of the housing is provided with an airbag attachment/detachment port 97, and the airbag attachment/detachment port 97 can be closed by an upper cover plate 98, so that the internal inflatable airbag can be attached to and detached from and replaced by the airbag attachment/detachment port.

In a third mode, as shown in fig. 4, the housing 9 includes a cylinder 94, and a cylinder cover 95 connected to an upper end of the cylinder 94; the limiting frame 81 is an open frame, and the upper end edge of the limiting frame 81 is fixed at the connection position of the cylinder 94 and the cylinder cover 95. In this scheme, the housing 9 is formed by combining a cylinder 94 and a cylinder cover 95 thereon; the limit frame is not a closed frame, and the limit frame is combined with the upper box cover to frame an expansion area of the expansion air bag. And spacing frame also is for dismantling the connection with the casing, is convenient for carry out dismouting, change to inside inflation gasbag, specifically fixes a position the upper end edge of spacing frame at the junction of the bottom of the case and case lid to can fix a position spacing frame in step when barrel 94 and cover 95 combination, it is also comparatively convenient to install.

In another embodiment, as shown in fig. 5, the limiting frame 81 is arranged inside the housing 9, and the inside of the limiting frame 81 forms a complete expansion area; the inflatable bladder 80 is disposed entirely within the retaining frame 81. In this scheme, the limiting frame 81 can be arranged inside the box body 9 in a fixed manner. In another embodiment, the limiting frame 81 is movably arranged inside the box body 9, and the limiting frame 81 is arranged inside the box body 9 in a floating manner based on the expansion air bag 80 inside the limiting frame; the inner side of the water inlet and outlet 91 is provided with a stop block for preventing the expansion air bag 80 from blocking the water inlet and outlet 91, or the outer side of the limit frame 81 is provided with a structure for preventing the expansion air bag 80 from blocking the water inlet and outlet 91.

Example 2:

as shown in fig. 6, the present embodiment relates to a hydraulic center, which comprises a box 1, and a return pipe 111 connected to the main machine, a water outlet pipe 112 connected to the main machine, a return pipe 113 connected to the end, a water replenishing pipe 13, and at least one water outlet pipe 114 connected to the end, which are arranged inside the box 1; the water return pipeline 111 of the host is used for connecting a water outlet of the air-conditioning host 2, and the water outlet pipeline 112 of the host is used for connecting a water inlet of the air-conditioning host 2; the water return line 113 connected to the end is used for connecting the water outlet of the end, and the water outlet line 114 connected to the end is used for connecting the water inlet of the end.

In the scheme, a first water tank 3 is connected between a water return pipeline 111 connected with the main engine and a water outlet pipeline 114 connected with the tail end in the box body 1, and a second water tank 4 is connected between a water return pipeline 113 connected with the tail end and a water outlet pipeline 112 connected with the main engine; the first water tank and the second water tank are built in the box body of the hydraulic center and are connected in the system, so that the running water quantity in the air-conditioning system can be increased, and the running stability of the air-conditioning system is ensured; on the basis, the scheme has the following advantages:

the scheme is provided with the first water tank and the second water tank, and compared with the arrangement of a single water tank, the occupied space depth is smaller under the condition of the same capacity; furthermore, the single water tank occupies a large space and has a large limitation on the layout of the internal pipelines of the tank body of the hydraulic center, and the two water tanks are more favorable for the layout and the space utilization of the internal pipelines of the hydraulic center.

2, the second water tank is connected with the water outlet pipeline 112 of the main machine, which is beneficial to ensuring that the water outlet pipeline 112 of the main machine has sufficient running water, thereby avoiding the phenomenon of suction of the water outlet pipeline 112 of the main machine when the water pump is started.

3, first water tank sets up on the return water pipeline 111 who connects the host computer, can reduce the instantaneous water pressure in the return water pipeline 111 that connects the host computer when the water pump starts, alleviates the impact of liquid high pressure to the pipeline.

Specifically, as shown in the figure, there are two of the terminal water outlet pipes 114, and one of the terminal water outlet pipes 114 is provided with a control valve 115. In the technical scheme, the two water outlet pipelines 114 connected with the tail ends are used for connecting the tail ends of an air conditioner (such as a fan coil, a floor heating piece and a heating piece), wherein the fan coil can be used in winter and summer, and the floor heating piece and the heating piece can be used only in winter. Therefore, the scheme is provided with at least two water outlet pipelines 114 connected with the tail ends, wherein one water outlet pipeline 114 connected with the tail end can be selectively closed, and the flowing direction of the internal running water is controlled.

In a further embodiment, an inner end of the water replenishing pipeline 13 is connected to the water returning pipeline 113 or the second water tank 4, and the water replenishing pipeline 13 is provided with a water replenishing valve 131, a filter 134, a flow sensor 133 and a check valve 132. The water replenishing valve 131 in this scheme is used for controlling the on-off of the water replenishing pipeline 13, and the filter 134 is used for filtering the replenished water; the check valve 132 prevents the medium in the system from flowing back from the water supply pipeline; the flow sensor 133 is used to obtain the amount of make-up water.

A differential pressure balance pipeline 14 and a differential pressure balance valve 141 connected to the differential pressure balance pipeline 14 are also arranged in the box body 1; one end of the differential pressure balancing pipeline 14 is connected to the water outlet pipeline 114 or the first water tank 3 at the connection end, and the other end of the differential pressure balancing pipeline 14 is connected to the water return pipeline 113 or the second water tank 4 at the connection end. According to the technical scheme, the pressure difference balance pipeline and the pressure difference balance valve connected with the pressure difference balance pipeline can enable the pressure difference between the water outlet pipeline 114 connected with the tail end and the water return pipeline 113 connected with the tail end to be kept within a certain range, and unstable system operation caused by too large and too small pressure difference under the conditions of opening and closing of a two-way valve at the tail end of an air conditioner and the like is avoided.

In a further preferred scheme, a first pressure sensor 31 for acquiring outlet water pressure is arranged on the outlet water pipeline 114 or the first water tank 3 at the connection end, and a second pressure sensor 41 for acquiring return water pressure is arranged on the return water pipeline 113 or the second water tank 4 at the connection end; the controller can determine whether the system has a water leakage condition based on the amount of water replenished by the flow sensor 133, the water outlet pressure obtained by the first pressure sensor 31 and/or the water return pressure obtained by the second pressure sensor 41. In the technical scheme, the controller can judge whether the running water quantity in the closed circulation system is normally reduced or not and whether the pipeline leaks or not based on the water supplementing quantity, the water outlet pressure and the water return pressure which are obtained in unit time.

In a more preferable scheme, a first temperature sensor 32 for acquiring the outlet water temperature is arranged on the outlet water pipeline 114 or the first water tank 3 connected to the tail end, and a second temperature sensor 42 for acquiring the return water temperature is arranged on the return water pipeline 113 or the second water tank 4 connected to the tail end; the controller more accurately judges whether the system has water leakage conditions according to the historical data of the water outlet temperature and/or the water return temperature. According to the scheme, the influence of the water temperature in the system on the volume and the pressure of the liquid is considered, so that the outlet water temperature and the return water temperature are detected in the scheme, and the influence of the temperature on the water pressure is judged by combining the historical data of the outlet water temperature and/or the return water temperature; when judging whether the running water quantity in the closed circulation system is reduced normally, the influence of the temperature on the water pressure is eliminated, and whether the water leakage condition exists in the system is judged more accurately.

In addition, as shown in the figure, a drain valve 33 is arranged at the bottom of the first water tank 3 and/or the second water tank 4, and when the controller judges that a water leakage situation exists based on the collected data and logic reasoning, the water replenishing valve 131 is closed, the drain valve 33 is opened or the water replenishing valve 131 is closed, and an audible and visual alarm is given.

The top of the first water tank 3 or the second water tank 4 is provided with an air exhaust device 34, the air exhaust device 34 is an automatic air exhaust device or a spiral air exhaust device, and the automatic air exhaust device or the spiral air exhaust device extends to the outer side of the first water tank 3 or the second water tank 4 and is communicated with the outside through an air exhaust port 35. According to the scheme, the air exhausting device is arranged on the first water tank or the second water tank and can be used for exhausting the air bubbles in the pipeline and prolonging the service life of the pipeline, and the problems that air bubbles are likely to be generated when the pipeline is arranged, the pipeline is supplemented with water and running water is heated and oxygen in the air bubbles is extremely prone to corroding the pipeline are solved.

In addition, the first water tank 3 and/or the second water tank 4 are/is provided with a safety valve 44 and/or an electric heating device 37, and the safety valve in the scheme has the function of discharging media to the outside of the system when the pressure of the media in the water tanks is increased to exceed a specified value; the electric heating device 37 performs auxiliary heating on the function of the air conditioner main unit 2, so as to ensure the heating requirement in winter.

Finally, the second water tank 4 in this embodiment employs the water tank with the inflatable bladder described in embodiment 1. So, set up the expanded airbag in the second water tank, combine the expansion function of expanded airbag promptly on the water storage function basis of second water tank to play the function of expansion tank. According to the scheme, the expansion structure is arranged on the second water tank, and the existing second water tank and the expansion tank are combined functionally, so that the structure is simplified, and the occupied space of the system is reduced.

Example 3:

as shown in fig. 7, the present embodiment relates to an air conditioner, and more particularly, to an air conditioner circulating water system, which includes an air conditioner main unit 2, a hydraulic center, and a terminal. The hydraulic center as described in example 1 of the hydraulic center, of course, also includes the water tank with the inflatable bladder of example 1. The water return pipeline 111 of the host is connected with the water outlet of the air-conditioning host 2, and the water outlet pipeline 112 of the host is connected with the water inlet of the air-conditioning host 2; the water return pipeline 113 connected with the tail end is connected with the water outlet at the tail end, and the water outlet pipeline 114 connected with the tail end is connected with the water inlet at the tail end; the heat exchanger 21 is arranged in the air conditioner main machine 2, and the water pump 51 is arranged on the air conditioner main machine 2, the hydraulic center 1 or a system pipeline.

In a further preferred scheme, when the terminals include the fan coil 52, the floor heating 53 and the heating sheet 54, the fan coil 52 is connected to the downstream of the water outlet pipeline 114 of one terminal, and the floor heating 53 and the heating sheet 54 are connected in parallel to the downstream of the water outlet pipeline 114 of the other terminal. When the air conditioner tail end connected with the air conditioner circulating water system comprises the fan coil, the floor heating and the heating sheet, as mentioned above, the use seasons of the fan coil, the floor heating and the heating sheet are different, so that the system connects the fan coil to the downstream of the water outlet pipeline 114 of one of the tail ends, and connects the floor heating and the heating sheet to the downstream of the water outlet pipeline 114 of the other tail end in parallel; in summer refrigeration environments, this may be closed by a control valve on the other end-connected outlet line 114.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (12)

1. A hydraulic center comprises a box body (1), a water return pipeline (111) connected with a main machine, a water outlet pipeline (112) connected with the main machine, a water return pipeline (113) connected with the tail end, a water supplementing pipeline (13) and at least one water outlet pipeline (114) connected with the tail end, wherein the water return pipeline (111), the water outlet pipeline (112), the water return pipeline (113) and the water supplementing pipeline are arranged in the box body (1); the water return pipeline (111) connected with the main unit is used for being connected with a water outlet of the air-conditioning main unit (2), and the water outlet pipeline (112) connected with the main unit is used for being connected with a water inlet of the air-conditioning main unit (2); the water return pipeline (113) connected with the tail end is used for connecting the water outlet of the tail end, and the water outlet pipeline (114) connected with the tail end is used for connecting the water inlet of the tail end; it is characterized in that; a first water tank (3) is connected between a water return pipeline (111) connected with the main machine and a water outlet pipeline (114) connected with the tail end in the box body (1), and a second water tank (4) is connected between a water return pipeline (113) connected with the tail end and a water outlet pipeline (112) connected with the main machine.

2. A hydraulic center according to claim 1, wherein: an expansion air bag (80) is arranged in the second water tank (4), and the expansion air bag (80) is used for stabilizing the water pressure of the second water tank (4) and a connecting pipeline thereof.

3. A hydraulic center according to claim 2, wherein: a limit frame (81) used for limiting the range of the expansion airbag (80) is further arranged in the box body of the second water tank (4); the inflatable air bag (80) is arranged in a limiting frame (81), and a water permeable hole (82) is formed in the limiting frame (81).

4. A hydraulic center according to claim 1, wherein: a differential pressure balance pipeline (14) and a differential pressure balance valve (141) connected to the differential pressure balance pipeline (14) are further arranged in the box body (1); one end of the differential pressure balancing pipeline (14) is connected to the water outlet pipeline (114) or the first water tank (3) at the tail end, and the other end of the differential pressure balancing pipeline (14) is connected to the water return pipeline (113) or the second water tank (4) at the tail end.

5. A hydraulic center according to claim 1, wherein: a flow sensor (133) for acquiring the amount of water to be supplemented is arranged on the water supplementing pipeline (13), a first pressure sensor (31) for acquiring the pressure of outlet water is arranged on the water outlet pipeline (114) or the first water tank (3) connected with the tail end, and a second pressure sensor (41) for acquiring the pressure of return water is arranged on the water return pipeline (113) or the second water tank (4) connected with the tail end; the controller can judge whether the system has water leakage conditions or not based on the water supplementing amount of the flow sensor (133), the water outlet pressure obtained by the first pressure sensor (31) and/or the water return pressure obtained by the second pressure sensor (41).

6. A hydraulic center according to claim 5, wherein: a first temperature sensor (32) for acquiring the outlet water temperature is arranged on the water outlet pipeline (114) or the first water tank (3) at the connection tail end, and a second temperature sensor (42) for acquiring the return water temperature is arranged on the return water pipeline (113) or the second water tank (4) at the connection tail end; the controller more accurately judges whether the system has water leakage conditions according to the historical data of the water outlet temperature and/or the water return temperature.

7. A hydraulic centre according to claim 5 or 6, wherein: and a drain valve (33) is arranged at the bottom of the first water tank (3) and/or the second water tank (4), and when the controller judges that a water leakage condition exists based on the acquired data and logic reasoning, the water supplementing valve (131) is closed, the drain valve (33) is opened or the water supplementing valve (131) is closed, and sound and light alarm is given.

8. A hydraulic center according to claim 1, wherein: an air exhaust device (34) is arranged at the top of the first water tank (3) or the second water tank (4), the air exhaust device (34) is an automatic air exhaust device or a spiral air exhaust device, and the automatic air exhaust device or the spiral air exhaust device extends to the outer side of the first water tank (3) or the second water tank (4) and is communicated with the outside through an air exhaust port (35).

9. A hydraulic center according to claim 1, wherein: the first water tank (3) and/or the second water tank (4) are/is provided with a safety valve (44) and/or an electric heating device (37), and the water supplementing pipeline (13) is provided with a filter (134) and/or a check valve (132).

10. A hydraulic center according to claim 1, wherein: the number of the water outlet pipelines (114) connected with the tail end is two, and a control valve (115) is arranged on one water outlet pipeline (114) connected with the tail end.

11. An air conditioner circulating water system comprises an air conditioner main machine (2), a hydraulic center and a tail end; the method is characterized in that: a hydraulic center according to any one of claims 1 to 9 of said hydraulic center; the water return pipeline (111) of the host is connected with the water outlet of the air-conditioning host (2), and the water outlet pipeline (112) of the host is connected with the water inlet of the air-conditioning host (2); a water return pipeline (113) connected with the tail end is connected with a water outlet at the tail end, and a water outlet pipeline (114) connected with the tail end is connected with a water inlet at the tail end; the water pump (51) is arranged on the air conditioner main unit (2), the hydraulic center or a system pipeline.

12. An air conditioner circulating water system comprises an air conditioner main machine (2), a hydraulic center and a tail end; the method is characterized in that: the hydraulic center of claim 10; the water return pipeline (111) of the main air conditioner is connected with a water outlet of the main air conditioner (2), and the water outlet pipeline (112) of the main air conditioner is connected with a water inlet of the main air conditioner (2); a water return pipeline (113) connected with the tail end is connected with a water outlet at the tail end, and a water outlet pipeline (114) connected with the tail end is connected with a water inlet at the tail end; the water pump (51) is arranged on the air conditioner host (2), the hydraulic center or a system pipeline; when the tail end comprises the fan coil (52), the floor heating (53) and the heating sheet (54), the fan coil (52) is connected with the downstream of the water outlet pipeline (114) of one of the tail ends, and the floor heating (53) and the heating sheet (54) are connected in parallel with the downstream of the water outlet pipeline (114) of the other tail end.

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