Freezing water supply system applied to air conditioning unit and central air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a chilled water supply system applied to an air conditioning unit and a central air conditioner, and the chilled water supply system comprises a cooling unit, a water supply pipe and a return pipe; the water supply pipe is provided with a circulating power pump; the water supply pipe supplies chilled water to each floor through a water supply vertical pipe, and the return pipe recycles used heating water through a water return vertical pipe; the constant-pressure water tank is provided with a water tank water outlet pipe and an emptying pipe which are communicated with the water supply pipe; the water tank outlet pipe is connected to the bottom of the constant-pressure water tank and used for supplying water to the water supply pipe. The emptying pipe is connected to the top of the constant-pressure water tank and used for exhausting mixed gas in the water supply pipe. The emptying pipe is arranged between the constant-pressure water tank and the water supply pipe, so that redundant mixed gas between the water supply pipes can be exhausted into the constant-pressure water tank to form an exhaust loop, insufficient exhaust caused by an exhaust valve is avoided, idling of the circulating power pump due to insufficient exhaust is avoided, and the service life of the circulating power pump is prolonged. And therefore, stable operation of the air conditioning unit is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a chilled water supply system and a central air conditioner applied to an air conditioner unit. Background Art

[0002] In some high-rise buildings and factories, in order to ensure the consistency of chilled water pressure on each floor, many merchants adopt the water supply method as shown in Figure 1 The water supply process is as follows: Chilled water flows out from the chilled water unit 8, enters the chilled water circulation pump 7, and then the chilled water circulation pump 7 pushes the water into the chilled water supply pipe 5. The water reaches each floor along the chilled water supply pipe 5 and returns to the chilled water unit 8 through the water supply return pipe 6, and then returns to the chilled water unit 8 through the external area passage 10 for refrigeration, and so on in a cycle. In this process, the air flow direction is: The gas 4 generated by the operation of the chilled water circulation pump 7 is discharged through the exhaust valve 3.

[0003] However, since the pipeline is in a nearly closed state, if the gas generated by the chilled water circulation pump 7 cannot be fully discharged due to the aging of the exhaust valve 3, the chilled water circulation pump 7 will basically be in an idling state, and the cooling effect on each floor cannot be ensured.

[0004] Therefore, it is necessary to improve the existing technology. Content of the Utility Model

[0005] The utility model provides a chilled water supply system and a central air conditioner applied to an air conditioner unit to solve the problems existing in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A chilled water supply system applied to an air conditioner unit, comprising:

[0008] A cooling unit, and a water supply pipe and a return pipe connected to the cooling unit; a circulating power pump is provided at the inlet end of the water supply pipe; the water supply pipe supplies chilled water to each floor through a water supply riser, and the return pipe recovers the warmed water after use through a return water riser;

[0009] A constant pressure water tank, the constant pressure water tank is provided with a water tank outlet pipe and a drain pipe communicated with the water supply pipe; the water tank outlet pipe is connected to the bottom of the constant pressure water tank for supplying water to the water supply pipe; the drain pipe is connected to the top of the constant pressure water tank for discharging the mixed gas in the water supply pipe.

[0010] Optionally, a regulating ball valve for adjusting the opening degree is provided on the drain pipe.

[0011] Optionally, a condensation mechanism is provided in the drain pipe, and the condensation mechanism is used for condensing the water vapor in the mixed gas into condensed water.

[0012] Optionally, the condensation mechanism includes one or more of a spiral pipeline, a cooling metal sheet, or a cooling coil.

[0013] Optionally, a diversion mechanism is further provided in the drain pipe. The diversion mechanism is located between the condensation mechanism and the constant pressure water tank and is used to guide the condensed water into the constant pressure water tank.

[0014] Optionally, the diversion mechanism includes a capillary pipeline network. The capillary pipeline includes a plurality of capillary pipelines, and each capillary pipeline is inclined.

[0015] Optionally, the constant pressure water tank is provided with an overflow port for discharging excess water;

[0016] The inlet end of the overflow port is higher than the outlet end of the drain pipe.

[0017] Optionally, the constant pressure water tank is provided with a water tank inlet pipe for adding water;

[0018] The inlet end of the water tank inlet pipe is higher than the outlet end of the drain pipe.

[0019] The present utility model also provides a central air conditioner, including a chilled water supply system applied to an air conditioner unit as described in any one of the above.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] A chilled water supply system and a central air conditioner applied to an air conditioner unit provided by the present utility model, by arranging a drain pipe between the constant pressure water tank and the water supply pipe, enable the excess mixed gas between the water supply pipes to be discharged into the constant pressure water tank to form an exhaust circuit, avoiding insufficient exhaust caused by the exhaust valve, thereby preventing the circulating power pump from idling due to insufficient exhaust, and effectively ensuring the stable operation of the air conditioner unit.

[0022] The present utility model has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent detailed implementation manners, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed implementation manners. These accompanying drawings and detailed implementation manners are jointly used to explain the specific principles of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic structural diagram of a chilled water supply system in the prior art;

[0025] Figure 2 is a schematic structural diagram of a chilled water supply system applied to an air conditioner unit provided in Embodiment 1 of the present invention.

[0026] Reference numerals: 1, make-up water tank; 2, overflow port; 3, exhaust valve; 4, pipeline gas; 5, chilled water supply pipe; 6, chilled water return pipe; 7, chilled water circulation pump; 8, chilled water unit; 9, make-up water pipe; 10, external area passage;

[0027] 20, cooling unit; 21, circulation power pump; 22, water supply pipe; 221, water supply riser; 222, mixed gas; 23, return pipe; 231, return water riser; 24, constant pressure water tank; 241, water tank inlet pipe; 242, water tank outlet pipe; 243, overflow port; 25, drain pipe; 251, regulating ball valve; 26, circulation pipeline. Detailed implementation manners

[0028] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, the following is described in detail with reference to the specific examples listed and the accompanying drawings. The examples described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0029] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0030] Unless otherwise defined, the meanings of the technical terms used in this article are the same as those generally understood by those skilled in the technical field to which the present application belongs; the use of relevant terms in this article is only for describing specific embodiments and is not intended to limit the present application.

[0031] In the description of the present application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.

[0032] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationship between these entities or operations.

[0033] Without further limitation, in this application, the expressions such as "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be additional elements in the process, method or product including the said elements, so that in a process, method or product including a series of elements, it may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0034] The same as the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the recited number; expressions such as "above", "below", "within" are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "plurality" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise specifically and clearly defined.

[0035] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of this application or for the convenience of the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it cannot be understood as a limitation to the embodiments of this application.

[0036] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms such as "installed", "connected", "joined", "fixed", "set" should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0037] The present utility model will be introduced in detail below in conjunction with the accompanying drawings.

[0038] Please refer to Figure 2 , an embodiment of the present utility model relates to a chilled water supply system applied to an air conditioning unit, including:

[0039] A cooling unit 20, and a water supply pipe 22 and a return pipe 23 connected to the cooling unit 20; a circulating power pump 21 is provided at the inlet end of the water supply pipe 22; the water supply pipe 22 supplies chilled water to each floor through a water supply riser 221, and the return pipe 23 recovers the warmed water after use through a return water riser 231.

[0040] Among them, the cooling unit 20 is used to form chilled water and send the chilled water to the demand points on each floor through the water supply pipe 22. Among them, the cooling unit 20 transfers heat from the object to be cooled to the cooling medium (chilled water) through a refrigerant, thereby generating chilled water. The water supply pipe and the demand points on each floor are connected through a water supply riser 221. The water supply riser 221 transports the water in the water supply pipe to different floors, and then through branch pipes to connect with water-using appliances or equipment on each floor to ensure that each floor can stably obtain chilled water supply.

[0041] Further, a circulating power pump 21 is provided at the inlet end of the water supply pipe 22 connected to the cooling unit 20 to provide power for the flow of chilled water in the water supply pipe 22, so that the chilled water can smoothly reach each floor through the water supply riser 221, realizing efficient water supply.

[0042] Further, the return pipe 23 is connected to each floor through a return water riser 231. At the water-using points on each floor, the warmed water with a changed temperature after use converges into the return water riser 231 through branch pipes, and then is uniformly returned to the return pipe 23 by the return water riser 231. The return pipe 23 and the return water riser 231 are responsible for collecting and transporting the warmed water used on each floor back to the cooling unit 20, realizing the recycling of water, improving the water resource utilization efficiency and maintaining the dynamic balance of water in the system.

[0043] The chilled water supply system further includes a constant pressure water tank 24. The constant pressure water tank 24 is provided with a water tank outlet pipe 242 communicating with the water supply pipe 22 and an exhaust pipe 25; the water tank outlet pipe 242 is connected to the bottom of the constant pressure water tank 24 for supplying water to the water supply pipe 22; the exhaust pipe 25 is connected to the top of the constant pressure water tank 24 for discharging the mixed gas 222 in the water supply pipe 22.

[0044] It can be understood that the constant pressure water tank 24 plays a role in stabilizing the system pressure and is used to ensure the normal operation of the water supply system.

[0045] Specifically, in the constant pressure water tank 24, the water outlet pipe 242 of the water tank is connected to the bottom of the constant pressure water tank 24, continuously replenishing water to the water supply pipe 22 to maintain the water supply of the system; the drain pipe 25 is used to discharge the mixed gas 222 in the water supply pipe 22, preventing gas accumulation from affecting the flow of water and the operation of the system, and ensuring the stable and reliable operation of the system.

[0046] Optionally, in this embodiment, a regulating ball valve 251 for adjusting the opening degree is provided on the drain pipe 25. The regulating ball valve 251 adjusts the gas discharge flow rate of the drain pipe 25 by controlling the opening degree, and can flexibly adjust the evacuation speed according to the actual working conditions.

[0047] Furthermore, in this embodiment, a condensation mechanism is provided in the drain pipe 25. The condensation mechanism is used to condense the water vapor in the mixed gas 222 into condensed water.

[0048] Among them, the condensation mechanism includes one or more of a spiral pipe, a cooling metal sheet or a cooling coil. The condensation mechanism uses a spiral pipe, a cooling metal sheet or a cooling coil, etc. to condense the water vapor in the mixed gas 222, reducing the water vapor content in the gas discharged from the drain pipe 25 and reducing the loss of water resources.

[0049] In addition, a guiding mechanism is also provided in the drain pipe 25. The guiding mechanism is located between the condensation mechanism and the constant pressure water tank 24, and is used to guide the condensed water into the constant pressure water tank 24.

[0050] Optionally, the guiding mechanism includes a capillary pipe network. The capillary pipes include multiple capillary pipes, and each capillary pipe is inclined. The guiding mechanism guides the condensed water into the constant pressure water tank 24 through the capillary pipe network, etc., realizing the effective recovery of the condensed water and avoiding the waste of water resources.

[0051] In this embodiment, the constant pressure water tank 24 is provided with an overflow port 243 for discharging excess water; the overflow port 243 of the constant pressure water tank 24 is used to discharge excess water, and its inlet end is higher than the outlet end of the drain pipe 25. In this way, it can not only ensure that the water level in the water tank will not be too high, but also drive the air in the drain pipe 25 to be discharged when the water flows out.

[0052] In this embodiment, the constant pressure water tank 24 is provided with a water tank inlet pipe 241 for adding water; the inlet end of the water tank inlet pipe 241 is higher than the outlet end of the drain pipe 25. Such a setting can use the water tank inlet pipe 241 to add water to the constant pressure water tank 24 without affecting the normal operation of the drain pipe 25.

[0053] In addition, after the return pipe 23 collects the recovered warm water from each floor, it leads to the circulation pipeline 26 and then returns to the cooling unit 20.

[0054] Specifically, the circulation pipeline 26 includes:

[0055] Flow regulating mechanism: By means of different pipe diameters or setting regulating valves, the flow rate of the returned water is adjusted and controlled to meet the requirements of different operating states of the system.

[0056] Pressure balancing mechanism: It is used to help maintain the pressure stability of the whole system and ensure that the water can flow smoothly back to the cooling unit.

[0057] Filtering mechanism: It includes a filtering device to filter and remove impurities in the returned water, preventing the impurities from entering the cooling unit and causing damage.

[0058] Heat buffering mechanism: It is used to play a certain heat buffering role during the water return process, making the water temperature change more smoothly.

[0059] Based on the foregoing embodiments, the embodiments of the present utility model provide a central air conditioner including the above-mentioned chilled water supply system. This chilled water supply system provides stable and efficient chilled water supply for the central air conditioner, achieving good air conditioning refrigeration effect.

[0060] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A chilled water supply system for an air conditioning unit, characterized in that: include: A cooling unit, and a water supply pipe and a return pipe connected to the cooling unit; a circulating power pump is provided at the inlet end of the water supply pipe; the water supply pipe supplies chilled water to each floor through a water supply riser, and the return pipe recycles the heated water after use through a return water riser; A constant pressure water tank, wherein the constant pressure water tank is provided with a water tank outlet pipe and a drain pipe connected to the water supply pipe; the water tank outlet pipe is connected to the bottom of the constant pressure water tank for supplying water to the water supply pipe; the drain pipe is connected to the top of the constant pressure water tank for discharging the mixed gas in the water supply pipe.

2. The frozen water supply system for air conditioning units according to claim 1, characterized in that: The drain pipe is provided with a regulating ball valve for adjusting the opening.

3. The frozen water supply system for air conditioning units according to claim 1, characterized in that: A condensation mechanism is provided in the exhaust pipe, and the condensation mechanism is used to condense the water vapor in the mixed gas into condensed water.

4. The chilled water supply system for an air conditioning unit according to claim 3, characterized in that: The condensing mechanism includes one or more of a spiral pipe, a cooling metal sheet or a cooling coil.

5. The chilled water supply system for an air conditioning unit according to claim 3, characterized in that: A flow guiding mechanism is also provided in the drain pipe. The flow guiding mechanism is located between the condensing mechanism and the constant pressure water tank and is used for guiding the condensed water into the constant pressure water tank.

6. The chilled water supply system for air conditioning units according to claim 5, characterized in that: The flow guiding mechanism comprises a capillary channel network, wherein the capillary channel comprises a plurality of capillary channels, and each of the capillary channels is arranged in an inclined manner.

7. The chilled water supply system for an air conditioning unit according to claim 1, characterized in that: The constant pressure water tank is provided with an overflow port for discharging excess water; The inlet end of the overflow port is higher than the outlet end of the drain pipe.

8. The chilled water supply system for an air conditioning unit according to claim 1, characterized in that: The constant pressure water tank is provided with a water tank water inlet pipe for adding water; The inlet end of the water tank water inlet pipe is higher than the outlet end of the drain pipe.

9. A central air conditioner, characterized in that: It comprises a chilled water supply system applied to an air conditioning unit as claimed in any one of claims 1 to 8.

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