Evaporation and reheating integrated air conditioning unit evaporator

Abstract

The utility model provides an evaporation and reheating integrated air conditioning unit evaporator. The evaporation and reheating integrated air conditioning unit evaporator comprises an evaporation coil pipe assembly, a reheating coil pipe assembly, a copper pipe assembly and a one-way valve support. The evaporation coil assembly is connected with the reheating coil assembly through a copper pipe assembly, a one-way valve is arranged on the copper pipe assembly, and a one-way valve support is arranged at the bottom of the one-way valve. The expansion valve device is connected with the copper pipe assembly, and the copper pipe assembly is connected with the reheating coil assembly. The compressor exhaust pipe is connected with the reheating coil assembly and connected with the condenser through a branch pipe, and the condenser is connected with the expansion valve device through a pipeline. The evaporation and reheating integrated air conditioning unit evaporator has the advantages that electric heating is replaced by part of condensation heat, consumption of electric heating power is reduced, and energy conservation and environmental protection in the true sense are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of central air-conditioning unit equipment, in particular to an evaporator of an evaporation-reheating integrated air-conditioning unit. Background Art

[0002] In order to achieve the goal of peaking carbon dioxide emissions by 2030 and achieving carbon neutrality by 2060, the country has adopted strong policies and measures. Among them, the National Development and Reform Commission jointly issued the "Green and Efficient Refrigeration Action Plan" with multiple departments, which proposed the requirement that "by 2030, the refrigeration energy efficiency of large public buildings will be improved by 30%, and the overall refrigeration energy efficiency will be improved by more than 25%." In addition, some standards and regulations have put forward the energy-saving requirement that "for buildings that provide both cooling and heating, heat recovery heat pump units should be used."

[0003] In clean operating rooms, clean laboratories and other places with high requirements for temperature and humidity accuracy, in order to achieve the needs of constant temperature and humidity, the air will first be cooled and dehumidified and then heated and heated. When the air meets the ideal air supply temperature and humidity, it will be sent indoors. In places with high requirements for temperature and humidity accuracy, the use of full DC variable frequency direct expansion combined air handling units is more common. Its unit is mainly composed of outdoor units and indoor units, and the functional sections of the indoor unit generally include mixing sections, primary filtration sections, evaporation sections, reheating sections, humidification sections, fan sections, medium efficiency filtration sections, silencer sections, air supply sections, etc. Among them, the evaporator section plays a major role. The evaporator assembly includes components such as the evaporator inner plate, the liquid distributor assembly and the gas collecting pipe assembly. The reheat section generally adopts electric heating. When the customer has a dehumidification demand, the electric heating will be turned on, which will heat the air twice, resulting in energy waste, which does not meet the requirements of energy saving. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an evaporator of an evaporation-reheat integrated air-conditioning unit with a simple structure, flexible operation, and the ability to ensure the accuracy of air supply temperature and humidity while solving the problem of high energy consumption.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An evaporator of an evaporation-reheat integrated air-conditioning unit, comprising an evaporation coil assembly, a reheat coil assembly, a copper tube assembly, and a one-way valve bracket;

[0007] The evaporating coil assembly is connected to the reheating coil assembly through a copper tube assembly. A one-way valve is arranged on the copper tube assembly, and a one-way valve bracket is arranged at the bottom of the one-way valve.

[0008] The expansion valve device is connected to the copper tube assembly, and the copper tube assembly is connected to the reheat coil assembly;

[0009] The compressor exhaust pipe is connected to the reheat coil assembly, the compressor exhaust pipe is connected to the condenser through a branch pipe, and the condenser is connected to the expansion valve device through a pipeline.

[0010] Further, the evaporator coil assembly includes an evaporator inner coil, a gas collecting pipe assembly, a liquid distributor head, and an expansion valve device;

[0011] The gas collecting pipe assembly is arranged in the evaporating inner plate; the gas collecting pipe assembly comprises a first gas collecting pipe and a second gas collecting pipe, and the first gas collecting pipe and the second gas collecting pipe are respectively connected to the liquid distributor head through two liquid distributor pipes.

[0012] The gas collecting pipe assembly is connected to the liquid distributor head through the liquid distributor pipe, and the liquid distributor head is connected to the expansion valve device;

[0013] The expansion valve device comprises a first expansion valve assembly and a second expansion valve assembly; one end of the first expansion valve assembly and the second expansion valve assembly are connected to the branch pipe of the compressor exhaust pipe, and the other end is connected to the gas collecting pipe assembly through a liquid distributor pipe.

[0014] Further, the first expansion valve assembly and the second expansion valve assembly each include a first copper tube, a first filter, an expansion valve fixing bracket, an expansion valve, a first U-shaped clamp, a second copper tube, and a second filter;

[0015] The first copper tube is L-shaped, the horizontal end of the first filter is arranged on the first copper tube, the vertical end of the first copper tube is connected to an expansion valve, and the expansion valve is connected to the second copper tube;

[0016] The second copper tube is U-shaped and is provided with a second filter;

[0017] The two ends of the expansion valve fixing bracket are arranged on the first copper tube and the second copper tube through a first U-shaped clamp.

[0018] Furthermore, the evaporator coil assembly further comprises a connecting inner disk fixing bracket and a water receiving tray, and the expansion valve device is arranged on the evaporator inner disk by connecting the inner disk fixing bracket;

[0019] The water receiving tray is arranged at the bottom of the evaporating inner tray.

[0020] Further, the reheat coil assembly includes a reheat inner coil, a reheat liquid pipe assembly, a reheat gas pipe assembly, and a reheat inner coil bracket;

[0021] The reheat liquid pipe assembly and the reheat gas pipe assembly are both arranged in the reheat inner plate, and the reheat gas pipe assembly is connected with the reheat liquid pipe assembly; the reheat inner plate bracket is arranged at the bottom of the reheat inner plate;

[0022] The reheat liquid pipe assembly is connected to the copper pipe assembly, and the reheat gas pipe assembly is connected to the compressor exhaust pipe;

[0023] The reheat gas pipe assembly comprises a plurality of reheat gas pipes connected in sequence. The reheat gas pipes are provided with two air intake pipes, and the two air intake pipes are respectively connected to two compressor exhaust pipes.

[0024] The reheat liquid pipe assembly includes a plurality of reheat liquid pipes connected in sequence, and the reheat liquid pipe is connected to the reheat gas pipe through a connecting pipe;

[0025] The reheat liquid pipe is provided with two liquid outlet pipes, and the two liquid outlet pipes are respectively connected to the copper pipe assemblies.

[0026] Furthermore, the height of the reheat inner pan bracket corresponds to the height of the water receiving pan.

[0027] Further, the copper tube assembly includes a third copper tube, a fourth copper tube, and a one-way valve;

[0028] The third copper tube and the fourth copper tube are both provided with a one-way valve;

[0029] The third copper tube is connected to the first expansion valve assembly, and the other end is connected to the liquid outlet pipe of the reheat coil assembly.

[0030] The fourth copper tube is communicated with the second expansion valve assembly respectively, and the other end is communicated with the liquid outlet pipeline of the reheat coil assembly.

[0031] Furthermore, the one-way valve bracket is U-shaped, and the one-way valve bracket is arranged below the third copper tube and the fourth copper tube through two second U-shaped clamps.

[0032] Furthermore, the inner disk fixing bracket includes a support plate and a rectangular frame, the support plate is arranged on the inner wall of the evaporating inner disk, the expansion valve device is arranged inside the rectangular frame, and the end of the rectangular frame is arranged on the support plate.

[0033] Furthermore, the distance between the evaporator coil assembly and the reheat coil assembly is at least 600 mm.

[0034] Compared with the prior art, the evaporator of the evaporation-reheat integrated air-conditioning unit described in the utility model has the following advantages:

[0035] 1. The utility model discloses an evaporator of an air-conditioning unit with evaporation and reheating integrated, in which part of the condensation heat replaces electric heating, thus reducing the consumption of electric heating power and achieving energy saving and environmental protection in a real sense.

[0036] 2. The evaporator of the evaporation-reheat integrated air-conditioning unit described in the utility model can reasonably control the refrigerant flow rate by adjusting the reheat three-way valve according to the real-time reheating demand while cooling and dehumidifying, thereby adjusting the cooling capacity and reheating amount to ensure the accuracy of air supply temperature and humidity;

[0037] 3. The evaporator of the evaporation-reheat integrated air-conditioning unit described in the utility model has a reheat coil temperature rise that can be accurately adjusted according to target requirements, and a large reheat temperature rise range, which can ensure the reheat required for deep dehumidification in cooling and transition seasons;

[0038] 4. The evaporator of an air-conditioning unit with evaporation and reheating integrated in the utility model uses a one-way valve bracket to fix the copper tube connecting the expansion valve assembly and the reheating liquid pipe assembly on the bracket, thereby avoiding fatigue fracture of the copper tube due to vibration during the operation of the air-conditioning unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0040] Figure 1 This is a schematic diagram of the explosion structure of the evaporator assembly described in the embodiment of the utility model (the liquid distributor tube is not drawn);

[0041] Figure 2 This is a schematic diagram of the overall structure of the evaporator assembly according to an embodiment of the utility model;

[0042] Figure 3 It is a top view of the overall structure of the evaporator assembly according to the embodiment of the utility model;

[0043] Figure 4 This is a schematic diagram of the overall structure of the expansion valve assembly in the embodiment of the utility model;

[0044] Figure 5 It is a side schematic diagram of the overall structure of the expansion valve assembly in an embodiment of the utility model.

[0045] Description of reference numerals:

[0046] 1. Evaporator coil assembly; 1-1. Evaporator inner coil; 1-2. Gas collecting pipe assembly; 1-2-1. First gas collecting pipe; 1-2-2. Second gas collecting pipe; 1-3. Distributor head; 1-4. Expansion valve device; 1-4-1. First copper pipe; 1-4-2. First filter; 1-4-3. Expansion valve fixing bracket; 1-4-4. Expansion valve; 1-4-5. First U-shaped clamp; 1-4-6. Second copper pipe; 1 -4-7, second filter; 1-5, inner disk connecting bracket; 1-6, water tray; 2, reheat coil assembly; 2-1, reheat inner disk; 2-2, reheat liquid pipe assembly; 2-2-1, liquid outlet pipe; 2-3, reheat gas pipe assembly; 2-3-1, air inlet pipe; 2-4, reheat inner disk bracket; 3, copper pipe assembly; 3-1, one-way valve; 4, one-way valve bracket; 5, second U-shaped clamp; 6, distributor pipe. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] like Figures 1 to 5 As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit includes an evaporation coil assembly 1, a reheat coil assembly 2, a copper tube assembly 3, and a one-way valve bracket 4; the evaporation coil assembly 1 and the reheat coil assembly 2 are connected via the copper tube assembly 3, a one-way valve 3-1 is provided on the copper tube assembly 3, and a one-way valve bracket 4 is provided at the bottom of the one-way valve 3-1. The expansion valve device 1-4 is connected to the copper tube assembly 3, and the copper tube assembly 3 is connected to the reheat coil assembly 2; the compressor exhaust pipe is connected to the reheat coil assembly 2, the compressor exhaust pipe is connected to the condenser through a branch pipe, and the condenser is connected to the expansion valve device 1-4 through a pipeline. The evaporation coil assembly 1 includes an evaporation inner disc 1-1, a gas collecting pipe assembly 1-2, a distributor head 1-3, and an expansion valve device 1-4;

[0050] The gas collecting pipe assembly 1-2 is arranged in the evaporator inner plate 1-1; the gas collecting pipe assembly 1-2 includes a first gas collecting pipe 1-2-1 and a second gas collecting pipe 1-2-2, and the first gas collecting pipe 1-2-1 and the second gas collecting pipe 1-2-2 are respectively connected to the liquid distributor head 1-3 through two liquid distributor pipes 6. The gas collecting pipe assembly 1-2 is connected to the liquid distributor head 1-3 through the liquid distributor pipe 6, and the liquid distributor head 1-3 is connected to the expansion valve device 1-4;

[0051] The expansion valve device 1-4 includes a first expansion valve assembly and a second expansion valve assembly; one end of the first expansion valve assembly and the second expansion valve assembly are connected to the branch pipe of the compressor exhaust pipe, and the other end is connected to the gas collecting pipe assembly 1-2 through the distributor pipe 6. The first expansion valve assembly and the second expansion valve assembly both include a first copper tube 1-4-1, a first filter 1-4-2, an expansion valve fixing bracket 1-4-3, an expansion valve 1-4-4, a first U-shaped clamp 1-4-5, a second copper tube 1-4-6, and a second filter 1-4-7; the first copper tube 1-4-1 is L-shaped, the horizontal end of the first filter 1-4-2 is arranged on the first copper tube 1-4-1, the vertical end of the first copper tube 1-4-1 is connected with the expansion valve 1-4-4, and the expansion valve 1-4-4 is connected with the second copper tube 1-4-6; the second copper tube 1-4-6 is U-shaped, and the second filter 1-4-7 is arranged on the second copper tube 1-4-6; the two ends of the expansion valve fixing bracket 1-4-3 are arranged on the first copper tube 1-4-1 and the second copper tube 1-4-6 through the first U-shaped clamp 1-4-5.

[0052] The evaporator coil assembly 1 also includes a connecting inner plate fixing bracket 1-5 and a water receiving tray 1-6. The expansion valve device 1-4 is arranged on the evaporator inner plate 1-1 by connecting the inner plate fixing bracket 1-5; the water receiving tray 1-6 is arranged at the bottom of the evaporator inner plate 1-1. The reheat coil assembly 2 includes a reheat inner disk 2-1, a reheat liquid pipe assembly 2-2, a reheat gas pipe assembly 2-3, and a reheat inner disk 2-1 bracket; the reheat liquid pipe assembly 2-2 and the reheat gas pipe assembly 2-3 are both arranged in the reheat inner disk 2-1, and the reheat gas pipe assembly 2-3 is connected to the reheat liquid pipe assembly 2-2; the reheat inner disk 2-1 bracket is arranged at the bottom of the reheat inner disk 2-1; the reheat liquid pipe assembly 2-2 is connected to the copper pipe assembly 3, and the reheat gas pipe assembly 2-3 is connected to the compressor exhaust pipe; the reheat gas pipe assembly 2-3 includes a plurality of reheat gas pipes connected in sequence, and two air intake pipes 2-3-1 are provided on the reheat gas pipe, and the two air intake pipes 2-3-1 are respectively connected to the two compressor exhaust pipes. The reheat liquid pipe assembly 2-2 includes a plurality of reheat liquid pipes connected in sequence, and the reheat liquid pipe is connected to the reheat gas pipe through a connecting pipe; two liquid outlet pipes 2-2-1 are provided on the reheat liquid pipe, and the two liquid outlet pipes 2-2-1 are respectively connected to the copper pipe assembly 3, and the height of the bracket of the reheat inner plate 2-1 corresponds to the height of the water receiving plate 1-6.

[0053] The copper tube assembly 3 includes a third copper tube, a fourth copper tube, and a one-way valve 3-1; the third copper tube and the fourth copper tube are both provided with a one-way valve 3-1; the third copper tube is connected to the first expansion valve assembly, and the other end is connected to the liquid outlet pipe 2-2-1 of the reheat coil assembly 2; the fourth copper tube is respectively connected to the second expansion valve assembly, and the other end is connected to the liquid outlet pipe 2-2-1 of the reheat coil assembly 2.

[0054] The one-way valve bracket 4 is U-shaped and is arranged below the third copper tube and the fourth copper tube through two second U-shaped clamps 5. The inner plate fixing bracket 1-5 includes a support plate and a rectangular frame. The support plate is arranged on the inner wall of the evaporating inner plate 1-1, and the expansion valve device 1-4 is arranged inside the rectangular frame. The end of the rectangular frame is arranged on the support plate. The distance between the evaporating coil assembly 1 and the reheating coil assembly 2 is at least 600 mm.

[0055] An evaporator of an evaporation-reheat integrated air-conditioning unit, when air needs to be processed, an evaporation coil assembly 1 and a reheat coil assembly 2 are arranged in an air-conditioning box, and the gas passes through the air-conditioning box, and the gas passes through the evaporation coil assembly 1 and the reheat coil assembly 2, and is sent into the room after being processed. The evaporation coil assembly 1 first cools and dehumidifies the air, and then the reheat coil assembly 2 heats the air to achieve the required air supply state, and then sends it into the room.

[0056] like Figure 2As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit, the refrigerant (gaseous) is divided into four paths after passing through the compressor exhaust pipe, and the four paths can be applied to two compressor exhaust pipe systems.

[0057] The two refrigerants (gaseous) flow to the two condensers through two branch pipes respectively. The refrigerant changes from gaseous state to liquid state. The refrigerant (liquid) passes through the two first copper tubes 1-4-1. The two refrigerants (liquid) pass through the first filter 1-4-2 and then enter the expansion valve 1-4-4. Then they enter the second copper tube 1-4-6. After being filtered by the second filter 1-4-7, they enter the distributor head 1-3. The two distributor heads 1-3 enter the first collecting pipe 1-2-1 and the second collecting pipe 1-2-2 respectively through the two distributor pipes 6.

[0058] The other two refrigerants (gaseous) enter the reheat gas pipe assembly 2-3 through two air inlet pipes 2-3-1 respectively. The refrigerant (gaseous) dissipates heat in the reheat gas pipe assembly 2-3 to obtain refrigerant (liquid). The refrigerant (liquid) enters the reheat liquid pipe assembly 2-2 through the connecting pipe. The refrigerant (liquid) passes through the reheat liquid pipe assembly 2-2 and is connected to the third copper tube and the fourth copper tube through two liquid outlet pipes respectively. The third copper tube and the fourth copper tube enter the expansion valve device, and the two enter the evaporating coil assembly 1 through the copper tee to absorb heat, thereby completing the refrigerant cycle.

[0059] The use of the one-way valve 3-1 can ensure that the refrigerant can only flow out along the reheat liquid pipe assembly 2-2 and then flow into the first copper tube 1-4-1 of the expansion valve assembly 1-4, and no backflow occurs. That is, if the reheat coil assembly 2 is not in use, the refrigerant will not be able to flow into the reheat inner disk 2-1, thereby effectively preventing the migration of the refrigerant and avoiding the problem that the evaporator coil assembly 1 in operation has a poor cooling effect due to lack of refrigerant.

[0060] The one-way valve bracket 4 is placed under the copper tube assembly 3, which can effectively prevent the copper tube assembly from being fatigued and fractured due to vibration during operation.

[0061] The expansion valve assembly 1-4 can adjust the position of the fixed bracket 1-5 in the vertical direction according to the size of the air-conditioning box, and has strong structural flexibility.

[0062] The gas collecting pipe assembly 1-2 and the evaporator inner plate 1-1 are connected by welding technology, so the overall structure is more firm and durable, and the refrigerant can circulate smoothly during operation.

[0063] A water receiving tray 1-6 is placed under the evaporating inner disk 1-1. When the air temperature is cooled by the evaporating coil assembly 1, if the air temperature is lower than the air dew point temperature, water will be separated out and then flow into the water receiving tray 1-6. A water outlet pipe is provided on one side of the water receiving tray 1-6, and the water is discharged from the water outlet pipe on one side of the water receiving tray, thereby ensuring the stable operation of the unit.

[0064] The distance between the evaporator coil assembly 1 and the reheat coil assembly 2 is at least 600 mm to prevent the moisture from floating due to excessive wind speed after the air to be treated is cooled and dehumidified by the evaporator coil assembly 1. If the distance is too close, the moisture will humidify the air again after passing through the reheat coil assembly 2, and the dehumidification effect of the air conditioner cannot be well guaranteed.

[0065] like Figure 3 As shown, an evaporator of an integrated evaporation and reheat air conditioning unit is provided with an inspection door 7 on the air conditioning box. When there is a problem with the operation of the evaporator component, it is convenient to open the inspection door for on-site manual inspection. At the same time, a certain distance is left between the evaporation coil assembly 1 and the reheat coil assembly 2, which can effectively prevent water from floating on the one hand, and facilitate maintenance on the other hand.

[0066] like Figure 4 As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit, in the refrigeration operation state, the refrigerant enters the expansion valve assembly 1-4 from the lower copper tube 1-4-1, flows through the first filter 1-4-2 and the expansion valve 1-4-4, and then passes through the upper second filter 1-4-7 and the second copper tube 1-4-6 into the distributor head 1-3, and finally the refrigerant is evenly distributed to each pipeline of the evaporation inner disk 1-1, realizing the reasonable distribution of the pipeline flow.

[0067] like Figure 4 As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit, which welds the distributor head 1-3, the first copper tube 1-4-1, the first filter 1-4-2, the expansion valve 1-4-4, the second filter 1-4-7, and the second copper tube 1-4-6 together, facilitates the installation of the evaporation inner disk 1-1 and the distributor head 1-3 and the expansion valve assembly 1-4, so that the three can operate more stably when working.

[0068] like Figure 4 As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit, the first copper tube 1-4-1, the first filter 1-4-2, the expansion valve 1-4-4, the second filter 1-4-7, and the second copper tube 1-4-6 are tightly fixed together by an expansion valve fixing bracket 1-4-3, a U-shaped clamp 1-4-5 and a cross-slot countersunk self-drilling screw. The above fixing method can effectively avoid damage to the unit.

[0069] like Figure 4As shown, an evaporator of an evaporation-reheat integrated air-conditioning unit, the expansion valve 1-4-4 of which is a crucial component in the air-conditioning system, throttling and reducing pressure in the cooling state, and fully open in the heating state. Since the valve core aperture of the expansion valve is only a few millimeters, it is easy to get blocked during operation, so it is necessary to install a first filter 1-4-2 and a second filter 1-4-7 on the inlet and outlet sides of the expansion valve 1-4-4, which can effectively ensure that impurities are intercepted before the expansion valve 1-4-4, thereby ensuring good cooling and heating effects.

[0070] The technical effect of the technical method provided by this embodiment is that it is highly versatile, has a simple structure, and can accurately distribute the refrigerant flow rate, which solves the "cold and hot offset" problem existing in traditional constant temperature and humidity occasions after refrigeration and dehumidification and electric heating, avoids energy waste, and significantly improves energy saving effect. In addition, some structural parts are welded and fixed in the form of assemblies, which can effectively ensure the stable operation of the air-conditioning system and is conducive to achieving a better refrigeration effect.

[0071] This solution involves an evaporator of an integrated evaporation and reheat air conditioning unit, which uses a reheat coil to recover condensation waste heat to replace electric heating, solving the "cold and hot offset" problem of adding electric heating after refrigeration and dehumidification in traditional constant temperature and humidity occasions. The evaporation coil assembly and the reheat coil assembly are fixed in a reliable and firm manner through a copper tube assembly, thereby ensuring the accuracy of air supply temperature and humidity and solving the problem of high energy consumption.

[0072] 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. An evaporator of an evaporation-reheat integrated air conditioning unit, characterized in that: It comprises an evaporating coil assembly (1), a reheating coil assembly (2), a copper tube assembly (3), and a one-way valve bracket (4); The evaporating coil assembly (1) and the reheating coil assembly (2) are connected via a copper tube assembly (3); a one-way valve (3-1) is provided on the copper tube assembly (3); and a one-way valve bracket (4) is provided at the bottom of the one-way valve (3-1); The expansion valve device (1-4) is connected to the copper tube assembly (3), and the copper tube assembly (3) is connected to the reheat coil assembly (2); The compressor exhaust pipe is connected to the reheat coil assembly (2), the compressor exhaust pipe is connected to the condenser through a branch pipe, and the condenser is connected to the expansion valve device (1-4) through a pipeline.

2. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 1, characterized in that: The evaporating coil assembly (1) comprises an evaporating inner coil (1-1), a gas collecting pipe assembly (1-2), a liquid distributor head (1-3), and an expansion valve device (1-4); The gas collecting pipe assembly (1-2) is arranged in the evaporator inner plate (1-1); the gas collecting pipe assembly (1-2) comprises a first gas collecting pipe (1-2-1) and a second gas collecting pipe (1-2-2); the first gas collecting pipe (1-2-1) and the second gas collecting pipe (1-2-2) are respectively connected to the liquid distributor head (1-3) through two liquid distributor pipes (6); The gas collecting pipe assembly (1-2) is connected to the liquid distributor head (1-3) through the liquid distributor pipe (6), and the liquid distributor head (1-3) is connected to the expansion valve device (1-4); The expansion valve device (1-4) comprises a first expansion valve assembly and a second expansion valve assembly; one end of the first expansion valve assembly and the second expansion valve assembly are connected to a branch pipe of a compressor exhaust pipe, and the other end is connected to a gas collecting pipe assembly (1-2) via a liquid distributor pipe (6).

3. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 2, characterized in that: The first expansion valve assembly and the second expansion valve assembly both include a first copper tube (1-4-1), a first filter (1-4-2), an expansion valve fixing bracket (1-4-3), an expansion valve (1-4-4), a first U-shaped clamp (1-4-5), a second filter (1-4-7), and a second copper tube (1-4-6); The first copper tube (1-4-1) is L-shaped, the horizontal end of the first filter (1-4-2) is arranged on the first copper tube (1-4-1), the vertical end of the first copper tube (1-4-1) is connected to an expansion valve (1-4-4), and the expansion valve (1-4-4) is connected to the second copper tube (1-4-6); The second copper tube (1-4-6) is U-shaped, and a second filter (1-4-7) is provided on the second copper tube (1-4-6); The two ends of the expansion valve fixing bracket (1-4-3) are arranged on the first copper tube (1-4-1) and the second copper tube (1-4-6) through a first U-shaped clamp (1-4-5).

4. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 2, characterized in that: The evaporator coil assembly (1) also includes a connecting inner disk fixing bracket (1-5) and a water receiving tray (1-6); the expansion valve device (1-4) is arranged on the evaporator inner disk (1-1) by connecting the inner disk fixing bracket (1-5); The water receiving tray (1-6) is arranged at the bottom of the evaporation inner tray (1-1).

5. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 2, characterized in that: The reheat coil assembly (2) comprises a reheat inner coil (2-1), a reheat liquid pipe assembly (2-2), a reheat gas pipe assembly (2-3), and a reheat inner coil bracket (2-4); The reheat liquid pipe assembly (2-2) and the reheat gas pipe assembly (2-3) are both arranged in the reheat inner plate (2-1); the reheat gas pipe assembly (2-3) is connected to the reheat liquid pipe assembly (2-2); the reheat inner plate bracket (2-4) is arranged at the bottom of the reheat inner plate (2-1); The reheat liquid pipe assembly (2-2) is connected to the copper pipe assembly (3), and the reheat gas pipe assembly (2-3) is connected to the compressor exhaust pipe; The reheat gas pipe assembly (2-3) comprises a plurality of reheat gas pipes connected in sequence, and two air intake pipes (2-3-1) are arranged on the reheat gas pipes. The two air intake pipes (2-3-1) are respectively connected to two compressor exhaust pipes; The reheat liquid pipe assembly (2-2) comprises a plurality of reheat liquid pipes connected in sequence, and the reheat liquid pipes are connected to the reheat gas pipes via a connecting pipe; Two liquid outlet pipes (2-2-1) are provided on the reheat liquid pipe, and the two liquid outlet pipes (2-2-1) are respectively connected to the copper pipe assembly (3).

6. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 5, characterized in that: The height of the reheat inner pan support (2-4) corresponds to the height of the water receiving pan (1-6).

7. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 1, characterized in that: The copper tube assembly (3) comprises a third copper tube and a fourth copper tube; The third copper tube and the fourth copper tube are both provided with a one-way valve (3-1); The third copper tube is connected to the first expansion valve assembly, and the other end is connected to the liquid outlet pipe (2-2-1) of the reheat coil assembly (2). The fourth copper tube is respectively connected to the second expansion valve assembly, and the other end is connected to the liquid outlet pipe (2-2-1) of the reheat coil assembly (2).

8. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 1, characterized in that: The one-way valve bracket (4) is U-shaped and is arranged below the third copper tube and the fourth copper tube via two second U-shaped clamps (5).

9. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 1, characterized in that: The inner disk connecting fixing bracket (1-5) comprises a supporting plate and a rectangular frame, wherein the supporting plate is arranged on the inner wall of the evaporating inner disk (1-1), the expansion valve device (1-4) is arranged inside the rectangular frame, and the end of the rectangular frame is arranged on the supporting plate.

10. The evaporator of an evaporation-reheat integrated air conditioning unit according to claim 1, characterized in that: The distance between the evaporator coil assembly (1) and the reheat coil assembly (2) is at least 600 mm.

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