Compact air conditioning unit evaporator assembly with condensation and reheating functions

Abstract

The utility model discloses a compact air conditioning unit evaporator assembly with condensation and reheating functions. The compact air conditioning unit evaporator assembly comprises an evaporation coil assembly, a reheating coil assembly and a water pan. The evaporation coil assembly is mounted on one side of the reheating coil assembly; the evaporation coil assembly and the reheating coil assembly are mounted above the water pan; the evaporation coil assembly comprises an evaporation inner disc, a gas collecting pipe assembly and a liquid separator assembly; the gas collecting pipe assembly is arranged on one side of the evaporation inner disc, the liquid separator assembly is connected with the evaporation inner disc through the capillary tube, and a refrigerant enters the evaporation inner disc through the capillary tube after passing through the liquid separator assembly and then flows through the gas collecting pipe assembly. The condensation and reheating functions are integrated in a compact design, so that the evaporator assembly not only can realize higher energy efficiency in a limited space, but also can improve the energy utilization rate and reduce the operation cost while ensuring the air quality and comfort.

Description

TECHNICAL FIELD

[0001] The utility model belongs to central air conditioning unit equipment technical field especially, and it is compact air conditioning unit evaporimeter subassembly with condensing reheating function. BACKGROUND

[0002] Under the background of current global energy consumption and environmental protection, improving energy utilization efficiency becomes the key target of central air conditioning unit design. Especially in some occasions with high space environment requirements, the performance and efficiency of air conditioning equipment directly affect the overall use experience.

[0003] In the medical purification field, in the place with high temperature and humidity precision requirements, to meet the customer's demand to realize the constant temperature and humidity working condition, the use of full DC frequency conversion direct expansion combined air handling unit is more common. The unit is divided into indoor unit and outdoor unit, and the indoor unit is composed of new return air mixing section, filter section, evaporation section, reheating section, humidifying section and air supply section. Among them, the evaporation section is cooled and dehumidified by the evaporation coil assembly to make the air drop to the dew point of the machine. The reheating section generally adopts electric heating form, when the customer has dehumidification demand, the electric heating will be started, which will heat the air treated by the evaporation section to the air supply state point. In fact, the start of electric heating will lead to large power consumption of the unit, causing waste of energy, unable to improve energy utilization efficiency, and not meeting the energy saving demand. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a compact air conditioning unit evaporimeter subassembly with condensing reheating function to solve at least one technical problem in the background art.

[0005] The utility model relates to a compact air conditioning unit evaporimeter subassembly with condensing reheating function, which replaces electric heating form with reheating coil assembly, can effectively recover and reuse the waste heat generated in the air conditioning system, and solves the "cold and hot offset" problem existing in the traditional constant temperature and humidity occasions after refrigeration and dehumidification. By integrating the condensing reheating function in the compact design, this evaporimeter subassembly not only can realize higher energy efficiency in limited space, but also can improve energy utilization rate and reduce operating cost while ensuring air quality and comfort.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] A compact air conditioning unit evaporimeter subassembly with condensing reheating function, comprising an evaporation coil assembly, a reheating coil assembly and a water pan.

[0008] The evaporation coil assembly is installed on one side of the reheating coil assembly.

[0009] The evaporating coil assembly and the reheating coil assembly are installed above the water pan.

[0010] The evaporating coil assembly comprises an evaporating inner coil, a header assembly and a distributor assembly.

[0011] The header assembly is arranged at one side of the evaporating inner coil, the distributor assembly is connected to the evaporating inner coil through a capillary tube, and the refrigerant enters the evaporating inner coil through the capillary tube and the header assembly.

[0012] Further, the reheating coil assembly comprises a reheating inner coil, a distributor fixing plate, a reheating liquid pipe assembly, a reheating gas pipe assembly, an expansion valve assembly and an expansion valve fixing plate.

[0013] The reheating liquid pipe assembly and the reheating gas pipe assembly are arranged at one side of the reheating inner coil.

[0014] The expansion valve assembly is installed at one side of the reheating inner coil through the expansion valve fixing plate and the distributor fixing plate.

[0015] Further, the expansion valve assembly is in communication with the reheating liquid pipe assembly.

[0016] The expansion valve assembly is in communication with the evaporating coil assembly.

[0017] Further, the expansion valve assembly comprises an expansion valve, a first copper pipe, a first copper filter, a second copper filter, a tee joint and a one-way valve.

[0018] The bottom of the expansion valve is connected to the first copper filter through the first copper pipe, and the first copper filter is connected to the evaporating coil assembly through a second copper pipe.

[0019] One side of the expansion valve is connected to the second copper filter through a third copper pipe.

[0020] The second copper filter is connected to the tee joint through a fourth copper pipe, one side of the tee joint is connected to a fifth copper pipe, the other side of the tee joint is connected to a sixth copper pipe, and the sixth copper pipe is provided with the one-way valve.

[0021] Further, the sixth copper pipe is in communication with the reheating liquid pipe assembly.

[0022] Further, the first copper filter, the second copper filter and the sixth copper pipe are respectively connected to the expansion valve fixing plate through first U-shaped clamps.

[0023] The expansion valve fixing plate is installed at one side of the reheating inner coil.

[0024] Further, the second copper pipe is connected to the distributor fixing plate through a second U-shaped clamp.

[0025] The distributor fixing plate is installed at one side of the reheating inner coil.

[0026] Compared with the prior art, the compact air conditioning unit evaporator assembly with condensation and reheating functions has the following advantages:

[0027] The compact air conditioning unit evaporator assembly with condensation and reheating functions can effectively recover and utilize waste heat in the air conditioning system, reduces overall energy consumption, and improves energy utilization efficiency of the system.

[0028] The compact air conditioning unit evaporator assembly with condensation and reheating functions can help maintain constant temperature and humidity required by high-precision places by recovering waste heat to adjust the temperature of air.

[0029] The compact air conditioning unit evaporator assembly with condensation and reheating functions can be installed and operated in limited space, occupies small space, saves installation site, and meets the requirements of high efficiency and energy saving.

[0030] 4. The compact air conditioning unit evaporator assembly with condensation and reheating functions can fix the evaporating coil assembly and the reheating coil assembly together through screws, reduce the possibility of relative displacement of the inner coil caused by vibration, and increase the operation stability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its

[0032] Figure 1 The figure is an explosion structure schematic view of the evaporator assembly of the embodiment of the application.

[0033] Figure 2 The figure is an overall structure schematic view of the evaporator assembly of the embodiment of the application.

[0034] Figure 3 The figure is an overall structure top view of the evaporator assembly of the embodiment of the application.

[0035] Figure 4 The figure is an overall structure schematic view of the expansion valve assembly in the embodiment of the application.

[0036] Legend of the figures:

[0037] 1, Evaporating coil assembly; 1-1, Evaporating inner coil; 1-2, Gas collecting pipe assembly; 1-3, Distributor assembly; 2, Reheating coil assembly; 2-1, Reheating inner coil; 2-2, Distributor fixing plate; 2-3, Reheating liquid pipe assembly; 2-4, Reheating gas pipe assembly; 2-5, Expansion valve assembly; 2-5-1, Expansion valve; 2-5-2, First copper pipe; 2-5-3, First copper filter; 2-5-4, Second copper filter; 2-5-5, Tee joint; 2-5-6, One-way valve; 2-5-7, Second copper pipe; 2-5-8, Third copper pipe; 2-5-9, Fourth copper pipe; 2-5-10, Fifth copper pipe; 2-5-11, Sixth copper pipe; 2-6, First U-shaped clamp; 2-7, Expansion valve fixing plate; 2-8, Second U-shaped clamp; 3, Water pan. DETAILED DESCRIPTION

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0042] As Figure 1As shown, a compact air conditioning unit evaporator assembly with condensing reheat function includes an evaporating coil assembly 1, a reheat coil assembly 2, and a water pan 3; the evaporating coil assembly 1 is installed on one side of the reheat coil assembly 2; the evaporating coil assembly 1 and the reheat coil assembly 2 are installed above the water pan 3; the evaporating coil assembly 1 includes an evaporating inner coil 1-1, a header assembly 1-2, and a distributor assembly 1-3; the header assembly 1-2 is arranged on one side of the evaporating inner coil 1-1; the distributor assembly 1-3 is connected to the evaporating inner coil 1-1 through capillary tubes; the refrigerant enters the evaporating inner coil 1-1 through the capillary tubes from the distributor assembly 1-3, and then flows through the header assembly 1-2.

[0043] The reheat coil assembly 2 includes a reheat inner coil 2-1, a distributor fixing plate 2-2, a reheat liquid tube assembly 2-3, a reheat gas tube assembly 2-4, an expansion valve assembly 2-5, and an expansion valve fixing plate 2-7; the reheat liquid tube assembly 2-3 and the reheat gas tube assembly 2-4 are arranged on one side of the reheat inner coil 2-1;

[0044] The expansion valve assembly 2-5 is installed on one side of the reheat inner coil 2-1 through the expansion valve fixing plate 2-7 and the distributor fixing plate 2-2.

[0045] The expansion valve assembly 2-5 is in communication with the reheat liquid tube assembly 2-3; the expansion valve assembly 2-5 is in communication with the evaporating coil assembly 1.

[0046] The expansion valve assembly 2-5 includes an expansion valve 2-5-1, a first copper tube 2-5-2, a first copper filter 2-5-3, a second copper filter 2-5-4, a tee 2-5-5, a one-way valve 2-5-6, a second copper tube 2-5-7, a third copper tube 2-5-8, a fourth copper tube 2-5-9, a fifth copper tube 2-5-10, and a sixth copper tube 2-5-11; the bottom of the expansion valve 2-5-1 is connected to the first copper filter 2-5-3 through the first copper tube 2-5-2; the first copper filter 2-5-3 is connected to the evaporating coil assembly 1 through the second copper tube 2-5-7; one side of the expansion valve 2-5-1 is connected to the second copper filter 2-5-4 through the third copper tube 2-5-8; the second copper filter 2-5-4 is connected to the tee 2-5-5 through the fourth copper tube 2-5-9; one side of the tee 2-5-5 is connected to the fifth copper tube 2-5-10; the other side of the tee 2-5-5 is connected to the sixth copper tube 2-5-11; the sixth copper tube 2-5-11 is provided with the one-way valve 2-5-6; the sixth copper tube 2-5-11 is in communication with the reheat liquid tube assembly 2-3; the first copper filter 2-5-3, the second copper filter 2-5-4, and the sixth copper tube 2-5-11 are respectively connected to the expansion valve fixing plate 2-7 through first U-shaped clamps 2-6; the expansion valve fixing plate 2-7 is installed on one side of the reheat inner coil 2-1.

[0047] The second copper pipe 2-5-7 is connected with the distributor fixing plate 2-2 through the second U-shaped clamp 2-8; the distributor fixing plate 2-2 is installed on one side of the reheating inner coil 2-1.

[0048] As shown in Figure 1 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0049] As shown in Figure 1 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0050] As shown in Figure 1 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0051] As shown in Figure 1 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0052] As shown in Figure 2 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0053] As shown in Figure 2 Fig. 1, a compact air conditioning unit evaporator assembly with condensing and reheating functions, which comprises an evaporator coil assembly 1; a reheating coil assembly 2; a water pan 3.

[0054] As shown in Figure 2As shown in the drawings, a compact air conditioning unit evaporator assembly with condensation reheating function, the refrigerant through the outdoor unit compressor exhaust pipe after the first flow path, the second flow path to the outdoor coil, the second flow path refrigerant through the reheating gas pipe assembly 2-4, reheating inner disc 2-1, flow into the reheating liquid pipe assembly 2-3, through the copper pipe into the check valve 2-5-6, finally two refrigerant in three way 2-5-5 mixed, through the second copper filter 2-5-4, the first copper pipe 2-5-2, the first copper filter 2-5-3, into the evaporative cooling coil assembly 1 to evaporate the heat absorption process.

[0055] As shown in the drawings, Figure 2 A compact air conditioning unit evaporator assembly with condensation reheating function, the evaporative cooling coil assembly 1 and the reheating coil assembly 2 below the water pan 3, when the air through the evaporative cooling coil assembly 1 for cooling and dehumidification treatment, if the air temperature is lower than the air dew point temperature, there will be water analysis, and then flow into the water pan 3, and then from the other side of the water pan 3 discharge. Prevent the water from accumulating in the equipment, avoid affecting the normal operation of the equipment.

[0056] As shown in the drawings, Figure 2 A compact air conditioning unit evaporator assembly with condensation reheating function, the gas collecting pipe assembly 1-2 and the evaporative inner disc 1-1 at the connection between the two welding process, reducing the risk of leakage at the connection, improve the sealing and reliability of the system.

[0057] As shown in the drawings, Figure 2 A compact air conditioning unit evaporator assembly with condensation reheating function, the distributor assembly 1-3 through the distributor fixed plate 2-2, the second U-shaped clamp 2-8 with cross slot countersunk self tapping screw, fixed. Refrigerant through the distributor assembly 1-3 through the capillary tube (capillary tube figure is not drawn) into the evaporative inner disc 1-1, and then from the gas collecting pipe assembly 1-2 flow out. When the evaporative cooling coil assembly 1 can evenly distribute the refrigerant to each pipeline, realize the reasonable distribution effect of pipeline flow.

[0058] As shown in the drawings, Figure 2 A compact air conditioning unit evaporator assembly with condensation reheating function, the expansion valve assembly 2-5 placed behind the reheating inner disc 2-1, less length, save space. Expansion valve assembly 2-5 using expansion valve fixed plate 2-7, the first U-shaped clamp 2-6 with cross slot countersunk self tapping screw fixed together, to avoid the fatigue fracture of copper pipe due to vibration during operation.

[0059] AsFigure 2 As shown, a compact air conditioning unit evaporator assembly with condensing reheat function is presented as an upper and lower structure, with system 1 and system 2 arranged sequentially from bottom to top. This structure makes it easier and clearer to affix system number labels in the factory, effectively preventing mistaken identification.

[0060] like Figure 3 As shown, a compact air conditioning unit evaporator assembly with condensing reheat function has its evaporator coil assembly 1 and reheat coil assembly 2 tightly fixed together by cross-slot screws. This facilitates more direct and faster heat transfer between the two inner coils, reducing heat loss. At the same time, the overall structure is more robust and durable, with reduced section length and optimized cost.

[0061] like Figure 3 As shown, an evaporator assembly of a compact air conditioning unit with condensing and reheating function is located inside the air conditioning unit, which is represented by a black diagonal line in the top view. The figure shows four pipes extending from the outside of the air conditioning unit, from left to right: a gas collection pipe, a drain pipe, a liquid distribution pipe, and a reheat gas pipe. The liquid distribution pipe of the expansion valve assembly 2-5 is placed before the reheat gas pipe assembly 2-4, thus corresponding one-to-one with the pipe connection sequence on the outdoor unit side: gas pipe, liquid pipe, reheat pipe. This design results in a simple and aesthetically pleasing appearance.

[0062] like Figure 3 As shown, an evaporator assembly of a compact air conditioning unit with condensing reheat function has an access door on its air conditioning unit, the location of which is indicated by black shading. The component layout is reasonable, facilitating routine maintenance and repair, shortening maintenance time, and improving equipment availability.

[0063] like Figure 4 As shown, in the evaporator assembly of a compact air conditioning unit with condensing reheat function, in cooling mode, two refrigerant lines converge through a copper pipe extending from the expansion valve assembly and a copper pipe connecting to a one-way valve 2-5-6, respectively, after passing through a tee 2-5-5. The refrigerant then enters the second copper filter 2-5-4, passes through the expansion valve 2-5-1 and the first copper filter 2-5-3, and flows into the distributor assembly 1-3. Subsequently, the refrigerant is evenly distributed to each pipe of the evaporator inner plate 1-1 through capillary tubes, achieving a reasonable distribution of pipe flow.

[0064] like Figure 4As shown in the figure, a compact air conditioning unit evaporator assembly with condensation reheating function, which welds the expansion valve 2-5-1, copper pipe 2-5-2, first copper filter 2-5-3, second copper filter 2-5-4, three-way 2-5-5, check valve 2-5-6 together by welding process, facilitates the installation between the evaporating coil assembly 1 and the reheating inner coil 2-1, reheating liquid pipe assembly 2-3, reheating gas pipe assembly 2-4, expansion valve assembly 2-5, so that the refrigerant can flow smoothly in the working condition.

[0065] As shown in the figure, Figure 4 An evaporator assembly with condensation reheating function of a compact air conditioning unit, the expansion valve assembly 2-5 contains a check valve 2-5-1, and the use of the check valve makes the refrigerant flow only in the direction of the cutting head, and cannot flow in the opposite direction. This phenomenon can ensure that the refrigerant cannot flow into the reheating inner coil 2-1 when the reheating inner coil 2-1 is not used, and can prevent the refrigerant from migrating and causing the evaporating coil assembly 1 to have poor refrigeration effect due to insufficient refrigerant.

[0066] As shown in the figure, Figure 4 An evaporator assembly with condensation reheating function of a compact air conditioning unit, the first copper filter 2-5-3 and the second copper filter 2-5-4 are different in appearance, the inner diameter of the first copper filter 2-5-3 on both sides is the outer diameter of the copper pipe, and the inner diameter of the second copper filter 2-5-4 on one side is the outer diameter of the copper pipe, and the inner diameter of the other side is the outer diameter of the expansion valve 2-5-1 extending out of the copper pipe. The use of the second copper filter 2-5-4 can reduce the occupation of the expansion valve assembly 2-5 in the width direction of the reheating inner coil 2-1, and optimize the use of space.

[0067] As shown in the figure, Figure 4 An evaporator assembly with condensation reheating function of a compact air conditioning unit, the expansion valve 2-5-1 throttles and depressurizes in the refrigeration working condition, and is in full open state in the heating working condition. Due to the high frequency of use of the expansion valve, the valve core aperture is only a few millimeters, and blockage may occur during operation. Therefore, the first copper filter 2-5-3 and the second copper filter 2-5-4 are installed on the inlet and outlet sides of the expansion valve 2-5-1, and the filter arrows of the two filters point to the expansion valve. The use of the filter can intercept impurities before the expansion valve 2-5-1, so that the operation can be more stable.

[0068] The technical effect of the technical means provided by the embodiment is that the structure is compact, the space occupation is small, the universality is high, the maintenance is convenient, the precision of the supply air temperature and humidity can be ensured, the high efficiency and energy saving can be realized in limited space, the energy utilization rate is improved, and the waste of energy is avoided. At the same time, the evaporating coil assembly and the reheating coil assembly are welded and fixed as a whole, which is not easy to be damaged during transportation, and the good refrigeration and heating effect of the air conditioning system is ensured.

[0069] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compact air conditioning unit evaporator assembly with condensing reheat functionality, characterized by: The application relates to an air conditioner, which comprises an evaporating coil assembly, a reheating coil assembly and a water pan. The evaporating coil assembly is installed on one side of the reheating coil assembly. The evaporating coil assembly and the reheating coil assembly are installed above the water pan. The evaporating coil assembly comprises an evaporating inner coil, a gas collecting pipe assembly and a distributor assembly. The gas collecting pipe assembly is arranged on one side of the evaporating inner coil, the distributor assembly is connected with the evaporating inner coil through a capillary tube, the refrigerant enters the evaporating inner coil through the distributor assembly and the capillary tube and then flows through the gas collecting pipe assembly.

2. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 1, wherein: The reheating coil assembly comprises a reheating inner coil, a distributor fixing plate, a reheating liquid pipe assembly, a reheating gas pipe assembly, an expansion valve assembly and an expansion valve fixing plate. The reheating liquid pipe assembly and the reheating gas pipe assembly are arranged on one side of the reheating inner coil. The expansion valve assembly is installed on one side of the reheating inner coil through the expansion valve fixing plate and the distributor fixing plate.

3. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 2, wherein: The expansion valve assembly is communicated with the reheating liquid pipe assembly. The expansion valve assembly is communicated with the evaporating coil assembly.

4. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 1, wherein: The expansion valve assembly comprises an expansion valve, a first copper pipe, a first copper filter, a second copper filter, a tee joint and a one-way valve. The bottom of the expansion valve is connected with the first copper filter through the first copper pipe, and the first copper filter is connected with the evaporating coil assembly through a second copper pipe. One side of the expansion valve is connected with the second copper filter through a third copper pipe. The second copper filter is connected with the tee joint through a fourth copper pipe, one side of the tee joint is connected with a fifth copper pipe, the other side of the tee joint is connected with a sixth copper pipe, and the sixth copper pipe is provided with the one-way valve.

5. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 4, wherein: The sixth copper pipe is communicated with the reheating liquid pipe assembly.

6. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 4, wherein: The first copper filter, the second copper filter and the sixth copper pipe are respectively connected with the expansion valve fixing plate through first U-shaped clamps. The expansion valve fixing plate is installed on one side of the reheating inner coil.

7. The compact air conditioning unit evaporator assembly with condensing reheat functionality of claim 4, wherein: The second copper pipe is connected with the distributor fixing plate through a second U-shaped clamp. The distributor fixing plate is installed on one side of the reheating inner coil.

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