Water-saving and electricity-saving air conditioning system

Abstract

The utility model discloses a water-saving electricity-saving air conditioning system, which comprises a compressor, a condenser, an evaporative cooling device and an evaporator component, the evaporator component comprises a cabinet, an evaporator arranged in the cabinet, a water pan arranged at the bottom of the evaporator and a fan arranged below the evaporator, and the bottom of the water pan is connected with a water pipe; an outlet of the compressor is sequentially connected with the condenser, the evaporative cooling device and the evaporator through pipelines, and a refrigerant outlet of the evaporator is connected with the compressor through a refrigerant connecting pipe. The other end of a water pipe at the bottom of the water pan is connected with the evaporator cooling device, the condenser and the evaporative cooling device are arranged side by side close to each other, a condensation fan is arranged on the outer side of the condenser, and the condensation fan can form airflow flowing through the evaporative cooling device and the condenser in sequence. According to the utility model, the unit operation power consumption can be reduced, and water and energy can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration of air-conditioning units, in particular to a direct expansion air-conditioning unit. Background Art

[0002] With the national requirements of "carbon peak and carbon neutrality", there are higher requirements for water and energy conservation throughout the life cycle of buildings.

[0003] To address this issue, a new direct expansion air conditioning unit has been proposed. This unit utilizes the condensed water from the evaporator as the evaporative cooling water source for the condenser. This approach not only utilizes the evaporative condensed water but also lowers the condenser inlet air temperature, reducing the unit's operating power consumption while also conserving both water and energy. Summary of the Invention

[0004] Purpose of the invention: In view of the above-mentioned existing problems and shortcomings, the purpose of this utility model is to provide a water-saving and electricity-saving air conditioning system.

[0005] Technical solution: To achieve the above invention purpose, the technical solution adopted by the utility model is: a water-saving and electricity-saving air conditioning system, including a compressor, a condenser, an evaporative cooling device and an evaporator assembly,

[0006] The evaporator assembly includes a cabinet, an evaporator arranged in the cabinet, a water receiving tray arranged at the bottom of the evaporator, and a fan arranged below the evaporator, wherein the bottom of the water receiving tray is connected to a water pipe;

[0007] The outlet of the compressor is connected to the condenser, the evaporative cooling device and the evaporator in sequence through a pipeline, and the refrigerant outlet of the evaporator is connected to the compressor through a refrigerant connecting pipe; the other end of the water pipe at the bottom of the water receiving pan is connected to the evaporative cooling device, and the condenser and the evaporative cooling device are arranged close to each other, and a condensing fan is provided on the outside of the condenser, and the condensing fan can form an airflow that flows through the evaporative cooling device and the condenser in sequence.

[0008] Preferably, the evaporator is composed of two condensing plates forming a V-shaped evaporator structure, and triangular plate sealing plates are provided on both sides; the top of the V-shaped evaporator structure is the air inlet, the gap between the heat exchange tubes between the condensing plates is the air outlet, and the fan is located below the evaporator; the triangular plate sealing plate is provided with a liquid separator and an electronic expansion valve connected by a liquid pipe, and the outlet of the electronic expansion valve is used to connect to a spray device.

[0009] Preferably, the triangular plate sealing plate is further provided with a trapezoidal hole.

[0010] Beneficial effects: Compared with the prior art, when the direct expansion air-conditioning unit of the present invention is operating in cooling or dehumidification mode, condensed water will be generated when the surface temperature of the evaporator is lower than the dew point temperature of the air. Currently, in my country, these condensed waters are discharged into the rainwater pipe and are not effectively utilized; secondly, as an energy-saving measure, an evaporative cooling device is added to the condenser side to reduce the condenser inlet air temperature and further reduce the power consumption of the compressor. The evaporative cooling device requires a water source, but in most direct expansion air-conditioning usage scenarios in my country, there are no conditions to provide a water source; the utility model utilizes the condensed water generated on the evaporator side of the direct expansion air-conditioning unit, and no longer discharges it into drainage pipes such as rainwater pipes, but is used for the evaporative cooling device on the condenser side, thereby reducing the operating power consumption of the unit and achieving water and energy saving at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the water-saving and electricity-saving air conditioning system of the present invention;

[0012] Figure 2 This is a structural diagram of the evaporator assembly of the present utility model.

[0013] Among them, there are compressor 1, condenser 2, evaporative cooling device 3, water pipe 4, evaporator 5, water receiving tray 6, refrigerant connecting pipe 7, condensing fan 8, electronic expansion valve 9, liquid distributor 10, and triangular plate sealing plate 11. DETAILED DESCRIPTION

[0014] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0015] like Figures 1-2 As shown, the water-saving and power-saving air conditioning system of the present invention can be an integrated or split air conditioning unit. This embodiment takes the split air conditioning unit as an example, which mainly includes an indoor unit and an outdoor unit, wherein the outdoor unit includes a compressor, a condenser and an evaporative cooling device, and the indoor unit includes an evaporator assembly, wherein:

[0016] The evaporator assembly includes a cabinet, an evaporator installed in the cabinet, a water collection tray installed at the bottom of the evaporator and a fan installed below the evaporator. The evaporator is a plate heat exchanger formed by connecting copper U-shaped heat exchange tubes in series and parallel. Two plate heat exchangers are tilted and spliced ​​to form a V-shaped heat exchanger, and triangular plate sealing plates are designed and installed on both sides of the V-shaped heat exchanger for sealing. A liquid separator and an electronic expansion valve are fixed on the triangular plate sealing plate, which are connected to the liquid pump (not shown in the figure), the liquid separator and the electronic expansion valve in turn through pipes, and are connected to the spray device in the evaporator. A water pipe is connected to the bottom of the water collection tray to collect condensed water on the surface of the evaporator. A condensing fan is set below the evaporator to force the indoor air flow to pass through the evaporator from the top to cool it down and then be sent out from the bottom.

[0017] The outdoor unit mainly includes a compressor, a condenser and an evaporative cooling device. The refrigerant outlet of the evaporator is connected to the compressor through a refrigerant connecting pipe. The other end of the water pipe at the bottom of the water receiving pan is connected to the evaporative cooling device. The condenser and the evaporative cooling device are arranged close to each other, and a condensing fan is provided on the outside of the condenser. The condensing fan can form an airflow that flows through the evaporative cooling device and the condenser in sequence.

[0018] The refrigeration implementation method of the water-saving and power-saving air conditioning system of the utility model includes the following steps: S1, the low-temperature refrigerant generated by the work of the compressor is sent to the evaporator through the refrigerant connecting pipe; S2, the fan under the evaporator is started to make the high-temperature and high-humidity indoor air in the room pass through the condensation plate of the evaporator, and the high-temperature and high-humidity indoor air is sent back to the room after being cooled by the condensation plate, and condensed water is formed on the condensation plate and collected through a water receiving tray; S3, the collected condensed water is directly sent to the evaporative cooling device through the liquid pipe; S4, the condensing fan rotates to make the air blow through the evaporative cooling device and the condenser in turn, the air generates heat and moisture exchange in the evaporative cooling device, and an isenthalpic humidification process is performed, the air loses sensible heat, water vapor enters the air, the temperature is reduced, and then blown through the condenser.

[0019] This utility model features a new type of direct expansion air conditioning unit, with a water pan positioned below the evaporator to collect condensed water. This condensed water is then piped to an evaporative cooling unit. The evaporative cooling unit is located behind the condenser. When the condensing fan rotates, a constant air velocity blows through the evaporative cooling unit. Heat and moisture exchange occurs within the evaporative cooling unit, leading to an isenthalpic humidification process. The air loses sensible heat, and water vapor enters the air, lowering its temperature before passing through the condenser. This reduction in condenser inlet air temperature, based on the principle of the air compression refrigeration cycle, reduces compressor power consumption.

[0020] The main technical innovations of this utility model are: the addition of an evaporator cooling device, which collects the V-shaped evaporator condensate, which was originally discharged as rainwater or sewage, rather than directly discharging it. Furthermore, the evaporative cooling device, with its water source drawn from the evaporator condensate, performs an isenthalpic humidification process, lowering the condenser inlet temperature and reducing compressor power consumption.

Claims

1. A water-saving and electricity-saving air conditioning system, characterized by: Including compressor, condenser, evaporative cooling device and evaporator assembly, The evaporator assembly includes a cabinet, an evaporator arranged in the cabinet, a water receiving tray arranged at the bottom of the evaporator, and a fan arranged below the evaporator, wherein the bottom of the water receiving tray is connected to a water pipe; The outlet of the compressor is connected to the condenser, the evaporative cooling device and the evaporator in sequence through a pipeline, and the refrigerant outlet of the evaporator is connected to the compressor through a refrigerant connecting pipe; the other end of the water pipe at the bottom of the water receiving pan is connected to the evaporative cooling device, and the condenser and the evaporative cooling device are arranged close to each other, and a condensing fan is provided on the outside of the condenser, and the condensing fan can form an airflow that flows through the evaporative cooling device and the condenser in sequence.

2. The water-saving and electricity-saving air conditioning system according to claim 1, characterized in that: The evaporator is composed of two condensing plates forming a V-shaped evaporator structure, and triangular plate sealing plates are respectively provided on both sides; the top of the V-shaped evaporator structure is the air inlet, the gap between the heat exchange tubes between the condensing plates is the air outlet, and the fan is located below the evaporator; the triangular plate sealing plate is provided with a liquid separator and an electronic expansion valve connected by a liquid pipe, and the outlet of the electronic expansion valve is used to connect to a spray device.

3. The water-saving and electricity-saving air conditioning system according to claim 2, characterized in that: The triangular plate sealing plate is also provided with a trapezoidal hole.

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