Condensation reheating air conditioner coil pipe and air conditioner

Abstract

The utility model discloses a condensation reheating air conditioner coil pipe and an air conditioner, and belongs to the technical field of tail end direct expansion air conditioner units, the condensation reheating air conditioner coil pipe comprises a drainage disc assembly, an evaporation coil pipe and a reheating coil pipe which are connected are arranged on the drainage disc assembly side by side, and the evaporation coil pipe and the reheating coil pipe are located on the air inlet front side and the air inlet rear side respectively. The evaporation coil is communicated with an evaporation air pipe, the reheating coil is communicated with a reheating air pipe, an evaporation liquid pipe is arranged between the evaporation air pipe and the reheating air pipe, the evaporation liquid pipe, the evaporation liquid distribution pipe assembly and the reheating liquid distribution pipe assembly are communicated with one another, the evaporation liquid distribution pipe assembly is communicated with the evaporation air pipe through a first capillary pipe, and the reheating liquid distribution pipe assembly is communicated with the reheating air pipe through a second capillary pipe. And the reheating liquid distribution pipe assembly is communicated with the reheating coil pipe through a second capillary pipe. The constant-temperature and constant-humidity air conditioner is suitable for air conditioners, and can achieve the purpose of energy conservation on the premise that the requirements of customers for constant temperature and constant humidity are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of terminal direct expansion air conditioning units, and in particular relates to a condensing reheating air conditioning coil and an air conditioner. Background Art

[0002] At present, variable frequency air conditioner units still use high-power electric auxiliary heating to heat the air in the outlet to achieve a constant temperature and humidity in winter or summer in order to provide customers with a comfortable indoor environment. This is because air conditioners alone cannot stably output a constant temperature. In addition, during defrosting, the air conditioner switches from heating mode to defrosting mode, from heating the indoor environment to heating the outdoor environment to melt the frost on the heat exchanger. If the indoor temperature is not high enough, the output power of the electric auxiliary heating will be increased, resulting in a high annual air conditioning power consumption. In summary, in order to achieve the purpose of constant temperature and humidity, ordinary variable frequency air conditioner units have a large electric auxiliary power and there is a problem of excessive power consumption. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a condensing and reheating air-conditioning coil, which can achieve the purpose of energy saving under the premise of ensuring the constant temperature and humidity requirements of customers.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A condensing and reheating air conditioning coil comprises a drain pan assembly, on which an evaporating coil and a reheating coil connected to each other are arranged in parallel, the evaporating coil and the reheating coil are respectively located at the front side and the rear side of the air inlet, the evaporating coil is connected to an evaporating air pipe, the reheating coil is connected to a reheating air pipe, an evaporating liquid pipe is arranged between the evaporating air pipe and the reheating air pipe, the evaporating liquid pipe, the evaporating liquid distributor pipe assembly and the reheating liquid distributor pipe assembly are connected to each other, the evaporating liquid distributor pipe assembly is connected to the evaporating air pipe via a first capillary tube, and the reheating liquid distributor pipe assembly is connected to the reheating coil via a second capillary tube.

[0006] The evaporation coil and the reheat coil are respectively provided with fixing plates, and the evaporation liquid distribution pipe assembly and the reheat liquid distribution pipe assembly are fixed on the fixing plates by means of pipe clamps.

[0007] A first electronic expansion valve is arranged on the pipeline between the evaporation liquid distribution pipe assembly and the three-way pipe, and a second electronic expansion valve is arranged on the pipeline between the reheat liquid distribution pipe assembly and the three-way pipe.

[0008] The evaporation coil is provided with an evaporation fin area, and the reheat coil is provided with a reheat fin area.

[0009] The evaporator fin area and the reheat fin area are fixed by a sheet metal part, and the sheet metal parts on the adjacent sides of the evaporator coil and the reheat coil are respectively provided with screw holes, and the evaporator coil and the reheat coil are fixed together after the screws pass through the screw holes.

[0010] The front and rear sides of the evaporation coil are clamped by an evaporation front plate and an evaporation rear plate respectively, and the upper and lower sides are clamped by an evaporation upper plate and an evaporation lower plate respectively.

[0011] The front and rear sides of the reheat coil are clamped by a reheat front plate and a reheat rear plate respectively, and the upper and lower sides are clamped by a reheat upper plate and a reheat lower plate respectively.

[0012] The drain pan assembly comprises a drain pan and a drain pipe, and the drain pipe is arranged on the side of the drain pan.

[0013] An air conditioner comprises an indoor unit and a condensing and reheating air conditioning coil, wherein the condensing and reheating air conditioning coil is arranged at the bottom of the indoor unit.

[0014] The beneficial effects of the utility model: the utility model provides a condensing and reheating air-conditioning coil, which is installed on the indoor side of the air-conditioning room. The condensing and reheating air-conditioning coil includes an evaporating coil and a reheating coil. In cooling mode, the evaporating coil cools and the reheating coil heats. Compensatory heating can be performed during cooling to reduce the power of electric heating. In heating mode, the evaporating coil heats and the reheating coil heats. Heating can be continued during heating and defrosting. Under the above-mentioned cooling or heating conditions, the reheating coil is always heating, which can replace part of the heating effect of electric heating, prevent fluctuations in indoor ambient temperature, and achieve the purpose of energy saving. Compared with the ordinary direct expansion machine that relies on electric heating to heat up, the energy saving rate can be as high as 75%, which can achieve the purpose of energy saving while ensuring the customer's needs for constant temperature and humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a condensing and reheating air conditioning coil of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the front view structure of

[0017] Figure 3 for Figure 1 A schematic diagram of a top view structure;

[0018] Figure 4 This is the refrigerant flow diagram in the refrigeration mode of the utility model;

[0019] Figure 5 This is the refrigerant flow diagram in the heating mode of the utility model.

[0020] The reference numerals in the figure are as follows: 1-evaporator coil; 2-reheat coil; 3-evaporator gas pipe; 4-evaporator liquid pipe; 5-reheat gas pipe; 6-drain pan assembly; 7-evaporator fin area; 8-evaporator upper plate; 9-reheat upper plate; 10-reheat fin area; 11-evaporator front plate; 12-reheat front plate; 13-evaporator rear plate; 14-reheat rear plate; 15-drain pipe; 16-screw hole; 101-evaporator liquid distributor pipe assembly; 102-fixed plate; 103-reheat liquid distributor pipe assembly; 104-tee pipe; 105-first capillary tube; 106-second capillary tube; 107-first electronic expansion valve; 108-second electronic expansion valve. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the protection scope of the present invention.

[0022] Example 1

[0023] like Figures 1 to 3 As shown, the utility model discloses a condensing reheat air conditioning coil, including a drain pan assembly 6, on which an evaporating coil 1 and a reheating coil 2 connected to each other are arranged in parallel, the evaporating coil 1 and the reheating coil 2 are respectively located at the front side and the rear side of the air inlet, the evaporating coil 1 is connected to the evaporating air pipe 3, the reheating coil 2 is connected to the reheating air pipe 5, an evaporating liquid pipe 4 is arranged between the evaporating air pipe 3 and the reheating air pipe 5, the evaporating liquid pipe 4, the evaporating liquid distributor pipe assembly 101, and the reheating liquid distributor pipe assembly 103 are connected to each other, the evaporating liquid distributor pipe assembly 101 is connected to the evaporating air pipe 3 through a first capillary tube 105, and the reheating liquid distributor pipe assembly 103 is connected to the reheating coil 2 through a second capillary tube 106.

[0024] like Figure 4 As shown, when the user is using the cooling mode, the liquid refrigerant enters from the evaporating liquid pipe 4, passes through the evaporating liquid distributor pipe assembly 101 and the first capillary tube 105 in sequence, reaches the evaporating coil 1, absorbs the heat of the air through the evaporating coil 1, and then flows out from the evaporating air pipe 3. The evaporating coil 1 plays a role in lowering the inlet air temperature and dehumidifying. In addition, the gaseous refrigerant enters from the reheating air pipe 5, releases heat to the air through the reheating coil 2, passes through the second capillary tube 106 and the reheating liquid distributor pipe assembly 103, and then passes through the evaporating liquid distributor pipe assembly 101 and the first capillary tube 105 to the evaporating coil 1, and then flows out from the evaporating air pipe 3. The reheating coil 2 plays a role in raising the low-temperature inlet air temperature and saving energy.

[0025] like Figure 5As shown, when the user is using the heating mode, the gaseous refrigerant enters from the evaporation gas pipe 3, passes through the evaporation coil 1 to release heat to the air, passes through the first capillary 105 and the evaporation liquid distributor assembly 101 to reach the evaporation liquid pipe 4, and flows out from the evaporation liquid pipe 4. The evaporation coil 1 plays a role in heating the incoming air. In addition, the gaseous refrigerant enters from the reheat gas pipe 5, passes through the reheat coil 2 to release heat to the air, passes through the second capillary 106 and the reheat liquid distributor assembly 103 to reach the evaporation liquid pipe 4, and flows out from the evaporation liquid pipe 4. The reheat coil 2 also plays a role in heating the incoming air. Even when the defrost mode is turned on, the evaporation coil 1 becomes a cooling state, and the reheat coil 2 can still continue to maintain a heating state, further reducing the fluctuation of the indoor temperature.

[0026] When the utility model is in cooling mode, the evaporator coil is cooling and the reheat coil is heating, so compensatory heating can be performed during cooling to reduce the power of electric heating. When the utility model is in heating mode, the evaporator coil is heating and the reheat coil is heating, so continuous heating can be performed during heating and defrosting. Under the above cooling or heating conditions, the reheat coil is always heating, which can replace a part of the heating function of the electric heating, thereby preventing fluctuations in indoor ambient temperature and achieving the purpose of energy saving.

[0027] Example 2

[0028] like Figures 1 to 3 As shown, the utility model discloses a condensing reheat air conditioning coil, including a drain pan assembly 6, which is arranged at the bottom of the indoor unit, and the evaporation coil 1 and the reheat coil 2 connected to each other are arranged side by side on the drain pan assembly 6. The drain pan assembly 6 has a stainless steel drain pan inside for collecting condensed water generated on the fins of the coil and draining it from the side drain port, and a plurality of sheet metal brackets are horizontally arranged inside, and a plurality of screw holes are arranged on the brackets for supporting and fixing the evaporation coil 1 and the reheat coil 2. The evaporation coil 1 and the reheat coil 2 are respectively located at the front side and the rear side of the air inlet. The fins of the evaporator coil 1 and the reheat coil 2 are fixed with sheet metal parts all around. The sheet metal parts on the adjacent sides of the evaporator coil 1 and the reheat coil 2 are respectively provided with screw holes 16. After the screws pass through the screw holes 16, the evaporator coil 1 and the reheat coil 2 are fixed together, so that the two coils are tightly connected, ensuring that the low-temperature air coming out of the evaporator coil 1 is directly heated up through the reheat coil 2, reducing or eliminating the need for electric heating to achieve a comfortable temperature for customers.

[0029] The evaporation coil 1 is provided with an evaporation fin area 7, and the multi-layer fins in the evaporation fin area 7 are formed by a plurality of copper tubes inserted therethrough. The front and rear sides of the evaporation coil 1 are clamped by the evaporation front plate 11 and the evaporation rear plate 13, respectively, and the upper and lower sides are clamped by the evaporation upper plate 8 and the evaporation lower plate, respectively, and the evaporation upper plate 8 and the evaporation lower plate are clamped and fixed to the evaporation front plate 11 and the evaporation rear plate 13 through the holes at the side edges. The reheat coil 2 is provided with a reheat fin area 10, and the multi-layer fins in the reheat fin area 10 are formed by a plurality of copper tubes inserted therethrough. The front and rear sides of the reheat coil 2 are clamped by the reheat front plate 24 and the reheat rear plate 14, respectively, and the upper and lower sides are clamped by the reheat upper plate 9 and the reheat lower plate, respectively, and the reheat upper plate 9 and the reheat lower plate are fixed to the reheat front plate 24 and the reheat rear plate 14 through the holes at the side edges.

[0030] The evaporation front plate 11 and the evaporation rear plate 13 of the evaporation coil 1 also have multiple holes on the left and right bent edges, which are tightly connected to the reheating front plate 12 and the reheating rear plate 14 of the reheating coil 2 by screws, so that the air treated by the evaporation coil 1 is directly condensed and reheated. In addition, the bent edges below the front and rear plates of the two coils also have multiple through holes, which can be tightly fixed to the drain pan assembly 6 by screws.

[0031] The evaporation coil 1 and the reheat coil 2 have a relatively complex pipeline structure on the side, and the evaporation coil 1 and the reheat coil 2 are respectively connected to the evaporation gas pipe 3 and the reheat gas pipe 5. The utility model also includes an evaporation liquid pipe 4, which is connected to an interface of the three-way pipe 104 through a pipeline, and the other two interfaces of the three-way pipe 104 are respectively connected to the evaporation liquid separation pipe assembly 101 and one end of the reheat liquid separation pipe assembly 103 through pipelines, the other end of the evaporation liquid separation pipe assembly 101 is connected to the evaporation gas pipe 3 through a first capillary tube 105, and the other end of the reheat liquid separation pipe assembly 103 is connected to the reheat coil 2 through a second capillary tube 106. A first electronic expansion valve 107 is arranged on the pipeline between the evaporation liquid separation pipe assembly 101 and the three-way pipe 104, and a second electronic expansion valve 108 is arranged on the pipeline between the reheat liquid separation pipe assembly 103 and the three-way pipe 104.

[0032] The utility model pipeline structure includes two expansion valve components, four copper filters ( Figure 1 Not specified in the figure), multiple groups of copper tubes, in order to avoid large shaking during transportation, a fixing plate 102 is installed on the evaporator coil 1 and the reheat coil 2, and the evaporator liquid distributor pipe assembly 101 and the reheat liquid distributor pipe assembly 103 are fixed on the fixing plate 102 using a pipe clamp to firmly fix the copper pipe fittings of the condenser reheat coil.

[0033] like Figure 4As shown, when the user is using the cooling mode, the liquid refrigerant enters from the evaporating liquid pipe 4, passes through the three-way pipe 104, the evaporating liquid distributor pipe assembly 101 and the first capillary tube 105 in sequence, reaches the evaporating fin area 7, absorbs the heat of the air through the evaporating fin area 7, and then flows out from the evaporating air pipe 3. The evaporating coil 1 plays a role in lowering the inlet air temperature and dehumidifying. In addition, the gaseous refrigerant enters from the reheating air pipe 5, releases heat to the air through the reheating fin area 10, passes through the second capillary tube 106 and the reheating liquid distributor pipe assembly 103, and then passes through the three-way pipe 104, the evaporating liquid distributor pipe assembly 101 and the first capillary tube 105 to the evaporating coil 1, and then flows out from the evaporating air pipe 3. The reheating coil 2 plays a role in raising the low-temperature inlet air temperature and saving energy.

[0034] like Figure 5 As shown, when the user uses the heating mode, the gaseous refrigerant enters from the evaporation gas pipe 3, releases heat to the air through the evaporation fin area 7, and then reaches the evaporation liquid pipe 4 after passing through the first capillary 105, the evaporation liquid distributor pipe assembly 101 and the three-way pipe 104, and flows out from the evaporation liquid pipe 4. The evaporation coil 1 plays a role in heating the incoming air. In addition, the gaseous refrigerant enters from the reheat gas pipe 5, releases heat to the air through the reheat fin area 10, and then reaches the evaporation liquid pipe 4 after passing through the second capillary 106, the reheat liquid distributor pipe assembly 103 and the three-way pipe 104, and then flows out from the evaporation liquid pipe 4. The reheat coil 2 also plays a role in heating the incoming air. Even when the defrost mode is turned on, the evaporation coil 1 becomes a cooling state, and the reheat coil 2 can still continue to maintain a heating state, further reducing the fluctuation of the indoor temperature.

[0035] Example 3

[0036] This embodiment discloses an air conditioner based on the embodiment 2. The air conditioner includes an indoor unit and the condensing and reheating air conditioning coil in the embodiment 2. The condensing and reheating air conditioning coil is arranged at the bottom of the indoor unit.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A condensing and reheating air conditioning coil, characterized in that: The invention comprises a drain pan assembly (6), wherein an evaporating coil (1) and a reheating coil (2) connected to each other are arranged in parallel on the drain pan assembly (6), wherein the evaporating coil (1) and the reheating coil (2) are respectively located at the front side and the rear side of the air inlet, wherein the evaporating coil (1) is connected to an evaporating air pipe (3), wherein the reheating coil (2) is connected to a reheating air pipe (5), wherein an evaporating liquid pipe (4) is arranged between the evaporating air pipe (3) and the reheating air pipe (5), wherein the evaporating liquid pipe (4), an evaporating liquid distribution pipe assembly (101), and a reheating liquid distribution pipe assembly (103) are connected to each other, wherein the evaporating liquid distribution pipe assembly (101) is connected to the evaporating air pipe (3) via a first capillary tube (105), and the reheating liquid distribution pipe assembly (103) is connected to the reheating coil (2) via a second capillary tube (106).

2. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The evaporating coil (1) and the reheating coil (2) are respectively mounted with a fixing plate (102), and the evaporating liquid distributing pipe assembly (101) and the reheating liquid distributing pipe assembly (103) are fixed to the fixing plate (102) by means of a pipe clamp.

3. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The evaporation liquid pipe (4) is in communication with one interface of the three-way pipe (104), and the other two interfaces of the three-way pipe (104) are respectively in communication with the evaporation liquid distribution pipe assembly (101) and the reheat liquid distribution pipe assembly (103).

4. The condensing and reheating air conditioning coil according to claim 3, characterized in that: A first electronic expansion valve (107) is provided on the pipeline between the evaporation liquid distribution pipe assembly (101) and the three-way pipe (104), and a second electronic expansion valve (108) is provided on the pipeline between the reheat liquid distribution pipe assembly (103) and the three-way pipe (104).

5. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The evaporator coil (1) is provided with an evaporator fin area (7), and the reheat coil (2) is provided with a reheat fin area (10).

6. The condensing and reheating air conditioning coil according to claim 5, characterized in that: The evaporator fin area (7) and the reheat fin area (10) are fixed by a sheet metal part, and the sheet metal parts on the adjacent sides of the evaporator coil (1) and the reheat coil (2) are respectively provided with screw holes (16), and the evaporator coil (1) and the reheat coil (2) are fixed together after the screws pass through the screw holes (16).

7. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The front and rear sides of the evaporation coil (1) are respectively clamped by an evaporation front plate (11) and an evaporation rear plate (13), and the upper and lower sides are respectively clamped by an evaporation upper plate (8) and an evaporation lower plate.

8. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The front and rear sides of the reheat coil (2) are respectively clamped by a reheat front plate (24) and a reheat rear plate (14), and the upper and lower sides are respectively clamped by a reheat upper plate (9) and a reheat lower plate.

9. The condensing and reheating air conditioning coil according to claim 1, characterized in that: The drain pan assembly (6) comprises a drain pan and a drain pipe (15), wherein the drain pipe (15) is arranged on a side of the drain pan.

10. An air conditioner, comprising an indoor unit, characterized in that: It also includes the condensing and reheating air-conditioning coil according to any one of claims 1 to 9, wherein the condensing and reheating air-conditioning coil is arranged at the bottom of the indoor unit.

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