A zero-pressure air conditioning terminal and dual-pump split multi-connection system

Abstract

The utility model relates to the technical field of HVAC equipment, and specifically discloses a zero-pressure air-conditioning terminal and a double-water-pump split multi-connected system; including a zero-pressure air-conditioning terminal heat exchange chamber and a zero-pressure air-conditioning terminal water distribution chamber, a zero-pressure air-conditioning terminal water collection chamber is provided at the lower end of the zero-pressure air-conditioning terminal heat exchange chamber, a heat preservation plate is provided on the side of the zero-pressure air-conditioning terminal heat exchange chamber close to the wall, a U-shaped uniform water distributor is provided in the zero-pressure air-conditioning terminal water distribution chamber, a U-shaped uniform water collector is provided inside the zero-pressure air-conditioning terminal water collection chamber, and a skirting condensation water tank is provided at the lower end of the zero-pressure air-conditioning terminal water collection chamber. The present application has no fan-like operating parts, operates without noise, and greatly improves the environmental comfort. Especially when used in bedrooms and wards, it is very beneficial for personnel to rest and maintain health. It has a large heat dissipation area, slowly releases cold and heat to the environment, does not cause rapid cooling and heating of the environment, improves comfort, does not cause "air-conditioning disease", and does not generate dust accumulation.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a zero-pressure air-conditioning terminal and a double-water-pump split-type multi-connection system. Background Art

[0002] At present, water system central air conditioners are all equipped with chilled water circulation pumps, which means that the circulation pipe network connecting the supply and return branches of each floor has to withstand greater water pressure, resulting in thicker pipe walls in the water system and higher requirements for installation technology, which makes the cost expensive. Therefore, air conditioning terminal equipment such as fan coil units and air cabinets must use finned tube heat exchangers with strong pressure resistance, and corresponding fans are configured for forced ventilation to improve heat exchange efficiency. The characteristics of this type of terminal equipment are small heat exchange area and high water pressure, but the resulting noise, dust accumulation, wind blowing, and upper heating and lower cooling in winter have become the four major pain points of air conditioning terminal equipment such as fan coil units and air cabinets. The relevant departments have formulated special standards and specifications for the noise generated when air-conditioning terminal equipment such as air conditioners and wind cabinets are in operation, but the motor and wind noise are always unavoidable; the terminal equipment causes damage to health; in addition, the problem of hot top and cold bottom caused by the operation of fan coil units in winter not only causes poor physical sensation, but also leads to energy waste of the system. For the above problems, people have been seeking to change them for decades but have made little progress. The dust accumulation on the fins of the surface cooler after running for a certain period of time is the culprit of certain human diseases, and professional cleaning is required every year; furthermore, direct airflow makes people feel bad, especially the elderly and children, who may feel uncomfortable due to their weak bodies.

[0003] Based on this, a zero-pressure air conditioning terminal and a dual-water pump split multi-split system are now provided to eliminate the above disadvantages of the existing water system central air conditioning. Utility Model Content

[0004] The utility model aims to provide a zero-pressure air conditioning terminal and a double-water pump split-type multi-connection system, which solves the problems of noise generation, high water pressure and high cost in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A zero-pressure air-conditioning terminal comprises a zero-pressure air-conditioning terminal heat exchange cavity, a zero-pressure air-conditioning terminal water distribution cavity is provided at the upper end of the zero-pressure air-conditioning terminal heat exchange cavity, the zero-pressure air-conditioning terminal water distribution cavity passes through the top of the suspended ceiling and is arranged close to the roof plate, a zero-pressure air-conditioning terminal water collecting cavity is provided at the lower end of the zero-pressure air-conditioning terminal heat exchange cavity, a heat preservation plate is provided on the side of the zero-pressure air-conditioning terminal heat exchange cavity close to the wall, a U-shaped uniform water distributor is provided in the zero-pressure air-conditioning terminal water distribution cavity, a U-shaped uniform water collector is provided inside the zero-pressure air-conditioning terminal water collecting cavity, and a skirting condensation water tank is provided at the lower end of the zero-pressure air-conditioning terminal water collecting cavity.

[0007] In an optional solution: the zero-pressure air-conditioning terminal heat exchange cavity utilizes internal reinforcement support partitions to divide the entire cavity into multiple vertical guide channels and a central independent, closed isolation installation channel, and the outer wall surface of the zero-pressure air-conditioning terminal heat exchange cavity is coated and sprayed with a polymer anti-condensation coating.

[0008] In an optional solution: a water-permeable dustproof strip is provided between the upper end of the skirting board condensation water groove and the water collecting chamber at the end of the zero-pressure air conditioner, and the top surface of the water-permeable dustproof strip is flush with the top of the skirting board condensation water groove, and the bottom surface is flush with the bottom of the water collecting chamber.

[0009] In an optional solution: an automatic exhaust valve is provided at the top of the water distribution chamber at the terminal of the zero-pressure air conditioner.

[0010] In an optional solution: a guide plate is provided inside the water distribution cavity at the zero-pressure air conditioner terminal, and guide lines are provided on the guide plate and the heat exchange wall plate of the water collection cavity at the zero-pressure air conditioner terminal.

[0011] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0012] The utility model also discloses a dual-water pump split multi-connected system, which also includes a water supply pipe for supplying water to multiple zero-pressure air-conditioning terminals and a water return pipe for returning water to multiple zero-pressure air-conditioning terminals. The water supply pipe and the water return pipe are horizontally connected to an energy storage and heat exchange water tank. The water supply pipe is connected to the water inlet end of the zero-pressure air-conditioning terminal through a first branch pipe, and the water return pipe is connected to the water outlet end of the zero-pressure air-conditioning terminal through a second branch pipe. A split water supply pump is provided on the first branch pipe, and a split self-priming water return pump is provided on the second branch pipe. Multiple energy storage and heat exchange water tanks are connected in parallel to a cold and heat source host through a fluorine-media pipeline.

[0013] In an optional solution: a water supply branch pipe valve and a water supply solenoid valve are provided in front of the water supply pump on the first branch pipe, a water flow control valve is provided in front of the self-priming return water pump on the second branch pipe, and a return water solenoid valve and a return water branch pipe valve are provided after the self-priming return water pump.

[0014] In an optional scheme: the U-shaped uniform water collectors at the ends of adjacent zero-pressure air conditioners are connected via a return water connecting hose, the U-shaped uniform water distributors at the ends of adjacent zero-pressure air conditioners are connected via a water supply connecting hose, the two interfaces of the U-shaped uniform water collector at the end of the last zero-pressure air conditioner are connected to each other, and the two interfaces of the U-shaped uniform water distributor at the end of the zero-pressure air conditioner are connected to each other.

[0015] In an optional solution: a food-grade water purifier is provided on the return water main.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Zero-pressure air conditioning terminal equipment has no pressure resistance requirements for the heat exchanger part, and its manufacturing process and cost are greatly reduced;

[0018] 2. This terminal equipment can realize the cooling and heating functions of the air-conditioning terminal, and also has the decorative effect and enclosure function of the aluminum alloy honeycomb large panel, so that users do not need to purchase repeatedly;

[0019] 3. The terminal equipment has no fan-type running parts and runs without noise, which greatly improves the environmental comfort. Especially when used in bedrooms and wards, it is very conducive to the rest and health of personnel;

[0020] 4. The double-pump split multi-split system has negative pressure in front of the split supply and return pumps, and micro-pressure in the back of the split supply and return pumps. They are both in a pressure-free state when shut down. Therefore, there is no hidden danger of water leakage in the system pipe network during use. In addition, the requirements for pipe materials and connection technology are not high, and the corresponding water system construction cost is also greatly reduced;

[0021] 5. The terminal device has a large heat dissipation area, which slowly releases cold and heat to the environment, does not cause the environment to suddenly cool or heat, improves comfort and does not cause "air conditioning disease";

[0022] 6. The heat exchange cavity of the terminal equipment adopts falling film heat exchange method, which has higher heat exchange efficiency than other methods;

[0023] 7. This terminal device is closer to the human body than fan coil type terminal devices, and the cold (heat) it emits can act on the human body more effectively, achieving the purpose of energy saving and efficiency improvement of the air conditioning system;

[0024] 8. The terminal equipment will not generate dust accumulation and does not require professional cleaning and maintenance, saving users worry, trouble and money.

[0025] 9. Each zero-pressure air-conditioning terminal device connected to the dual-pump split multi-split system is equipped with a supply and return pump for separate circulating water supply and return. Compared with the existing water system air-conditioning with a centralized chilled water circulation pump, it can save about 40% of the water pump power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a cross-sectional view of the installation of the zero-pressure air conditioner terminal of the utility model.

[0027] Figure 2 This is a schematic diagram of the internal structure of the zero-pressure air conditioning terminal of the utility model.

[0028] Figure 3 This is a schematic diagram of the terminal installation piping of a single zero-pressure air conditioner in the utility model.

[0029] Figure 4 This is a schematic diagram of the terminal assembly of multiple zero-pressure air conditioners in the utility model;

[0030] Figure 5 It is a schematic diagram of the structure of a U-shaped uniform water distributor in the zero-pressure air conditioning terminal of the utility model.

[0031] Figure 6 It is a schematic diagram of the structure of the U-shaped uniform water collector in the zero-pressure air conditioning terminal of the utility model.

[0032] Figure 7 This is a schematic diagram of the structure of the zero-pressure air conditioner water collection chamber and skirting condensation water tank of the utility model.

[0033] Figure 8 This is a diagram of a double water pump split multi-connection system of the utility model.

[0034] Fig. 9 This is a partial diagram of the double water pump separate multi-connection system of the utility model.

[0035] Fig.10 For this utility model Figure 8 A magnified view of the structure in Figure 2.

[0036] Fig.11 This is a schematic diagram of the installation and connection of multiple zero-pressure air conditioner terminals in the utility model.

[0037] Notes on the reference numerals: 1. Cold and heat source host; 21. Refrigerant supply pipe; 22. Refrigerant return pipe; 3. Energy storage water exchange tank; 31. Water heat exchanger; 41. Water supply main valve; 42. Return water main valve; 5. Food-grade water purifier; 61. Water supply main pipe; 62. Return water main pipe; 71. Water supply branch pipe valve; 72. Return water branch pipe valve; 731. Water supply solenoid valve; 732. Separate water supply pump; 733. Water flow control valve; 734. Separate self-priming return water pump; 735. Return water solenoid valve;

[0038] 8. Zero-pressure air conditioning terminal; 81. Water distribution cavity of zero-pressure air conditioning terminal; 82. Heat exchange cavity of zero-pressure air conditioning terminal; 83. Water collection cavity of zero-pressure air conditioning terminal; 84. Skirting condensation water tank; 85. U-shaped uniform water distributor; 86. Guide plate; 87. Water-permeable dustproof strip; 88. U-shaped uniform water collector; 89. Insulation board; 91. Water supply main drain valve; 92. Water return main drain valve; 93. Automatic exhaust valve; 94. Water supply connecting hose; 95. Water return connecting hose. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] like Figure 1-Figure 11 As shown, the embodiment of the utility model provides a zero-pressure air-conditioning terminal, including a zero-pressure air-conditioning terminal heat exchange cavity 82, a zero-pressure air-conditioning terminal water distribution cavity 81 is provided at the upper end of the zero-pressure air-conditioning terminal heat exchange cavity 82, an automatic exhaust valve 93 is provided at the top of the zero-pressure air-conditioning terminal water distribution cavity 81, the zero-pressure air-conditioning terminal water distribution cavity 81 passes through the top of the suspended ceiling and is arranged near the roof plate, a zero-pressure air-conditioning terminal water collecting cavity 83 is provided at the lower end of the zero-pressure air-conditioning terminal heat exchange cavity 82, a heat preservation plate 89 is provided on the side of the zero-pressure air-conditioning terminal heat exchange cavity 82 close to the wall, a guide plate 86 is provided at the zero-pressure air-conditioning terminal water distribution cavity 81, and guide lines are provided on the guide plate 86 and the heat exchange wall plate of the zero-pressure air-conditioning terminal water collecting cavity 83, so that the water film is evenly attached to the guide plate 86 and the heat exchange wall plate of the zero-pressure air-conditioning terminal water collecting cavity 83, and a U-shaped uniform water distributor 85 is provided in the zero-pressure air-conditioning terminal water distribution cavity 81, and a U-shaped uniform water collector 88 is provided inside the zero-pressure air-conditioning terminal water collecting cavity 83;

[0041] Taking a building with a current floor height of 3 meters as an example, the height of the heat exchange cavity at the end of the zero-pressure air conditioner can reach about 2.6 meters. The water film formed by the U-shaped uniform water distributor 85 and the guide plate 86 flows downward naturally attached to the heat exchange wall plate with a height of about 2.6 meters, and the heat exchange cavity is always in a hollow and pressure-free state, thereby achieving its zero-pressure operation purpose; in the process of the water film flowing downward naturally, the heat exchange wall plate is cooled or heated by the water film, thereby radiating heat transfer to the room, and the air attached to the outside of the heat exchange wall plate also generates partial convective heat conduction, thereby reducing or increasing the indoor temperature;

[0042] like Figure 2As shown, the heat exchange cavity 82 of the zero-pressure air conditioner terminal uses an internal reinforcement support partition to divide the entire cavity into multiple diversion channels and a central independent, closed isolation installation channel. The isolation installation channel is isolated from the adjacent water supply cavity and diversion channel, and is used to pass the fixing bolts to vertically and slidably fix the zero-pressure air conditioner terminal 8 on the wall. The zero-pressure air conditioner terminal 8 can expand and slide left, right and upward;

[0043] like Figure 3 As shown, the two interfaces of the U-shaped uniform water distributor 85 on one side of the terminal of a single zero-pressure air conditioner are interconnected, and the two interfaces of the U-shaped uniform water collector 88 on the same side are interconnected, and one of the interfaces of the U-shaped uniform water distributor 85 and the U-shaped uniform water collector 88 on the other side is blocked with a pipe cap, and the other interface is connected to the first branch pipe and the second branch pipe respectively, so that the terminal of a single zero-pressure air conditioner can be connected to the double-pump split multi-connection system, which is simple, convenient and easy to implement;

[0044] like Figure 4 As shown, the interfaces at both ends of the U-shaped uniform water distributor 85 and the U-shaped uniform water collector 88 can be easily connected to each other and the two interfaces at the tail ends can be interconnected, so that any room can easily realize the parallel installation of multiple zero-pressure air-conditioning terminals, so as to increase the heat dissipation area, which is beneficial to the uniform and stable temperature in the building space, and also facilitates the decoration and decoration of the entire wall to be consistent in style; the outer wall surface of the heat exchange cavity 82 of the zero-pressure air-conditioning terminal is coated and sprayed with a polymer anti-condensation coating to reduce and delay the condensation phenomenon of the aluminum alloy panel.

[0045] like Figure 5 , Figure 6 As shown, the U-shaped uniform water distributor 85 utilizes the principle that water pressure is proportional to pipe length and water volume is proportional to water pressure. The first orifice and the last orifice, i.e., the orifice with the maximum water output and the orifice with the minimum water output, are matched in pairs, the second orifice and the second-to-last orifice, i.e., the orifice with the second largest water output and the orifice with the second smallest water output, are matched in pairs, and the remaining orifices are matched in this way. The sum of the water outputs of all two matched orifices can be equal, thereby ensuring that the sum of the water distribution volumes of any two orifices matched with each other on the two straight pipes of the U-shaped uniform water distributor 85 are equal. The water collection principle of the U-shaped uniform water collector 88 is the same as that of the U-shaped uniform water distributor 85, i.e., the U-shaped structure water distributor and water collector realize uniform water distribution and water collection along the width direction of the water distribution section and the water collection section.

[0046] like Figure 7As shown, a skirting condensation water tank 84 is provided at the lower end of the water collecting chamber 83 at the terminal of the zero-pressure air conditioner, and a water-permeable dustproof strip 87 is provided between the upper end of the skirting condensation water tank 84 and the water collecting chamber 83 at the terminal of the zero-pressure air conditioner. The top surface of the water-permeable dustproof strip 87 is flush with the top of the skirting condensation water tank 84, and the bottom surface is flush with the bottom of the water collecting chamber. The water-permeable dustproof strip 87 can allow the condensed water droplets formed outside the panel of the heat exchange section of the terminal of the zero-pressure air conditioner to penetrate downward, and can prevent dust in the indoor air from entering the skirting condensation water tank 84 to form pollution. The skirting condensation water tank 84 can be slid and pulled out from the lower part of the water collecting chamber 83 at the terminal of the zero-pressure air conditioner separately, so as to facilitate the disassembly and assembly, and the later cleaning and maintenance of the skirting condensation water tank 84.

[0047] like Figure 8 As shown, a dual-water pump split multi-connected system includes a zero-pressure air conditioning terminal, a water supply pipe 61 for supplying water to a plurality of zero-pressure air conditioning terminals, and a return pipe 62 for returning water to the plurality of zero-pressure air conditioning terminals. A water supply pipe drain valve 91 is provided at the end of the water supply pipe 61, and a return pipe drain valve 92 is provided at the end of the return pipe 62. The water supply pipe 61 and the return pipe 62 are in communication with an energy storage and heat exchange water tank 3. A return water main valve 42 is provided on the return water pipe near the energy storage and heat exchange water tank 3, and a water supply main valve 41 is provided on the water supply pipe near the energy storage and heat exchange water tank 3. A food-grade water purifier 5 for purifying water quality is provided between the return water main valve 42 and the energy storage and heat exchange water tank 3. The water supply pipe 61 after the water supply valve is connected to the water inlet end of the zero-pressure air conditioning terminal through a first branch pipe, and the return water pipe 62 after the return water main valve is connected to the water outlet end of the zero-pressure air conditioning terminal through a second branch pipe.

[0048] The outlet of the cold and heat source host 1 is connected to the inlet of the water heat exchanger 31 through the refrigerant supply pipe 21, and the outlet of the water heat exchanger 31 is connected to the inlet of the cold and heat source host through the refrigerant return pipe. The cold (heat) generated by the cold and heat source host 1 is transported to each energy storage water exchange tank 3 through the refrigerant;

[0049] like Fig. 9 , Fig.10 As shown, the energy storage water exchange tank 3 is horizontally connected to the return water pipe 62 and the water supply pipe 61, that is, each energy storage water exchange tank 3 and its horizontally connected return water pipe 62 and water supply pipe 61 are at the same elevation, so that the water pressure in the supply and return water pipes is zero; the first branch pipe is provided with a water supply branch pipe valve 71, a water supply solenoid valve 731 and a separate water supply pump 732, and the second branch pipe is provided with a return water branch pipe valve 72, a return water solenoid valve 735, a separate self-priming return water pump 734 and a water flow control valve 733. The water flow control valve 733 controls its valve opening, i.e., the outflow, according to the water level signal of the zero-pressure air-conditioning terminal water collecting chamber 83, so as to control the water level in the zero-pressure air-conditioning terminal water collecting chamber 83 at the optimal position;

[0050] like Fig.11 As shown, the U-shaped uniform water collectors at the ends of adjacent zero-pressure air conditioners are connected via a return water connection hose 95, the U-shaped uniform water distributors at the ends of adjacent zero-pressure air conditioners are connected via a water supply connection hose 94, the two interfaces of the U-shaped uniform water distributor 85 at the end of the last zero-pressure air conditioner are connected to each other, and the two interfaces of the U-shaped uniform water collector 88 at the end of the zero-pressure air conditioner are connected to each other, and multiple U-shaped uniform water distributors 85 at the ends of zero-pressure air conditioners are connected to each other to form a large U-shaped uniform water distributor, and multiple U-shaped uniform water collectors 88 at the ends of zero-pressure air conditioners are connected to each other to form a large U-shaped uniform water collector, so as to achieve uniform water distribution and water collection with the same amount of water at the ends of each zero-pressure air conditioner;

[0051] After the system is turned on, the water system operates in the following process: the water level sensor in the energy storage water exchange tank 3 detects the water level in the energy storage water exchange tank 3. The main controller controls the electric valve on the water supply pipe to open according to the water level signal if water replenishment is required. At the same time, the cold and heat source host 1 outputs fluorine medium to the energy storage water exchange tank 3 located on each floor or in each area to cool (in summer) or heat (in winter) the water medium in the energy storage water exchange tank 3. When any zero-pressure air-conditioning terminal 8 in the room is turned on, the corresponding separate water supply pump 732 and separate self-priming return water pump 734 (delayed) are started, and the water supply solenoid valve 731 and the return water solenoid valve 733 are opened immediately. The cold (hot) water in the energy storage water exchange tank 3 flows along the water supply main pipe 61, enters the U-shaped uniform water distributor 85 through the first branch pipe, and is evenly sprayed from the spray hole to On the lower guide plate 86, a uniform water film is formed by the guide line and adhered to the inner wall of the heat exchange chamber 82 at the end of the zero-pressure air conditioner and flows downward to cool (heat) the heat exchange wall plate. After the temperature is reduced (increased), the heat exchange wall plate cools (warms) the indoor air by radiation and convection. As the separate water supply pump 732 and the separate self-priming return water pump 734 are started and operated at the same time, the cold (hot) water flowing to the water collection chamber 83 at the end of the zero-pressure air conditioner is controlled by the water flow control valve 733 according to the water level signal of the water collection chamber 83 at the end of the zero-pressure air conditioner. The valve opening, i.e., the outflow, is controlled by the separate self-priming return water pump 734 according to the water level signal of the water collection chamber 83 at the end of the zero-pressure air conditioner. The return water flow rate is the same as the water supply flow rate and is pumped into the return water main pipe 62 through the second branch pipe by the separate self-priming return water pump 734, and then enters the energy storage water exchange water tank 3 for re-cooling (heating), and the cycle is repeated;

[0052] When the indoor temperature approaches the set value, the cold (hot) water supply solenoid valve 731 and the separate water supply pump 732 are closed, and after a certain delay, the cold (hot) water return solenoid valve 735 and the separate self-priming water return pump 734 stop running, while the cold (hot) source host 1 continues to operate until the water temperature of the energy storage water exchange tank 3 reaches the lowest (in summer) and the highest (in winter), so as to realize the water tank energy storage;

[0053] When the indoor temperature is higher than the set value in summer and lower than the set value in winter, the corresponding separate water supply pump 732 and separate self-priming return water pump 734 are started, and the water supply solenoid valve 731 and the return water solenoid valve 735 are opened and operated, and the cycle repeats continuously;

[0054] The cold and heat source host 1 and each energy storage water exchange tank 3 are connected with fluorine medium and run independently. The system stops when the water temperature in each energy storage water exchange tank 3 reaches the set temperature. The system starts when the water temperature of any energy storage water exchange tank 3 is higher than the set temperature in summer and lower than the set temperature in winter.

[0055] In summer, when there is no dehumidifier installed indoors and the air humidity is too high, condensed water droplets may form on the outside of the heat exchange cavity wall after the air conditioner is turned on. The condensed water droplets slide downward under the action of gravity, penetrate through the water-permeable dustproof strip 87, and enter the skirting condensation water tank 84, and then be discharged collectively or individually to the outside through the pipeline;

[0056] The skirting condensation water tank 84 is regularly slid out from the lower part of the zero-pressure air conditioning terminal heat exchange chamber 83 for later cleaning and maintenance.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero-pressure air conditioning terminal, comprising a zero-pressure air conditioning terminal heat exchange chamber (82), wherein a zero-pressure air conditioning terminal water distribution chamber (81) is provided at the upper end of the zero-pressure air conditioning terminal heat exchange chamber (82), characterized in that: The zero-pressure air-conditioning terminal water distribution chamber (81) is arranged near the roof slab, the zero-pressure air-conditioning terminal heat exchange chamber (82) is provided with a zero-pressure air-conditioning terminal water collection chamber (83) at the lower end, the zero-pressure air-conditioning terminal heat exchange chamber (82) is provided with a heat preservation plate (89) on the side close to the wall, the zero-pressure air-conditioning terminal water distribution chamber (81) is provided with a U-shaped uniform water distributor (85), the zero-pressure air-conditioning terminal water collection chamber (83) is provided with a U-shaped uniform water collector (88), and the zero-pressure air-conditioning terminal water collection chamber (83) is provided with a skirting condensation water tank (84) at the lower end.

2. The zero-pressure air conditioning terminal according to claim 1, characterized in that: The zero-pressure air conditioner terminal heat exchange cavity (82) utilizes an internal reinforcement support partition to divide the entire cavity into a plurality of vertical flow guide channels and a central independent, closed isolation installation channel, and the outer wall surface of the zero-pressure air conditioner terminal heat exchange cavity (82) is coated with a film and sprayed with a polymer anti-condensation coating.

3. The zero-pressure air conditioning terminal according to claim 1, characterized in that: A water-permeable dustproof strip (87) is provided between the upper end of the skirting line condensation water groove (84) and the zero-pressure air conditioner terminal water collecting chamber (83); the top surface of the water-permeable dustproof strip (87) is flush with the top of the skirting line condensation water groove (84), and the bottom surface is flush with the bottom of the zero-pressure air conditioner terminal water collecting chamber (83).

4. The zero-pressure air conditioning terminal according to claim 1, characterized in that: An automatic exhaust valve (93) is provided at the top of the zero-pressure air conditioning terminal water distribution chamber (81).

5. The zero-pressure air conditioning terminal according to claim 1, characterized in that: A guide plate (86) is provided inside the zero-pressure air-conditioning terminal water distribution chamber (81), and guide lines are provided on the guide plate (86) and the heat exchange wall plate of the zero-pressure air-conditioning terminal water collection chamber (83).

6. A dual-pump split multi-connection system, comprising the zero-pressure air conditioning terminal according to claim 1, characterized in that: It also includes a water supply pipe (61) for supplying water to the terminals of the plurality of zero-pressure air conditioners and a water return pipe (62) for returning water to the terminals of the plurality of zero-pressure air conditioners. The water supply pipe (61) and the water return pipe (62) are horizontally connected to the energy storage and heat exchange water tank (3). The water supply pipe (61) is connected to the water inlet of the terminal of the zero-pressure air conditioner via a first branch pipe, and the water return pipe (62) is connected to the water outlet of the terminal of the zero-pressure air conditioner via a second branch pipe. A separate water supply pump (732) is provided on the first branch pipe, and a separate self-priming water return pump (734) is provided on the second branch pipe. The plurality of energy storage and heat exchange water tanks (3) are connected in parallel to the cold and heat source host (1) via a fluorine medium pipeline.

7. The dual water pump split multi-connection system according to claim 6, characterized in that: A water supply branch pipe valve (71) and a water supply solenoid valve (731) are provided in front of the water supply pump (732) disposed on the first branch pipe, a water flow control valve (733) is provided in front of the self-priming return water pump (734) disposed on the second branch pipe, and a return water solenoid valve (735) and a return water branch pipe valve (72) are provided behind the self-priming return water pump (734).

8. The dual water pump split multi-connection system according to claim 7, characterized in that: The U-shaped uniform water collectors (88) at the ends of adjacent zero-pressure air conditioners are connected via a return water connection hose (95), the U-shaped uniform water distributors (85) at the ends of adjacent zero-pressure air conditioners are connected via a water supply connection hose (94), the two interfaces of the U-shaped uniform water collector (88) at the end of the last zero-pressure air conditioner are connected to each other, and the two interfaces of the U-shaped uniform water distributor (85) at the end of the zero-pressure air conditioner are connected to each other.

9. The dual water pump split multi-connection system according to claim 6, characterized in that: The water return pipe (62) is provided with a food-grade water purifier (5).

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