Heat recovery device of direct expansion type air conditioning unit

Abstract

The utility model discloses a heat recovery device of a direct expansion type air conditioning unit, which belongs to the technical field of air conditioning energy conservation and comprises a unit main body, a fan is communicated with the upper surface of the unit main body, a heat exchanger is fixedly connected inside the unit main body, a heat recovery component is arranged inside the unit main body, and the heat recovery component is fixedly connected with the fan. The heat recovery assembly comprises a long plate and a square pipe, the upper surface of the long plate communicates with the heat exchanger, the long plate is arranged in the unit body and fixedly connected with the inner wall of the unit body, a plurality of first fins are arranged on the lower surface of the long plate, the interior of the long plate is a cavity, and the square pipe is arranged in the cavity. The lower surface of the long plate is communicated with the plurality of fins I; due to the fact that media do not make direct contact with the surfaces of the fins and the heat exchanger, the fins and the heat exchanger are effectively prevented from being corroded and rusted, the media are heated more evenly, and the utilization efficiency of heat recovery is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning energy saving, in particular to a heat recovery device of a direct expansion air-conditioning unit. Background Art

[0002] Air conditioning, also known as air conditioner, is an electrical appliance that uses artificial means to adjust and control parameters such as the temperature, humidity, cleanliness, and air flow velocity of the ambient air in a building or structure. Air conditioning waste heat recovery technology is to install a special recovery device on the air conditioner outdoor unit to recover the heat discharged to the outdoors by the air conditioner outdoor unit (i.e., air conditioning waste heat).

[0003] The existing utility model with announcement number: CN211204383U discloses an air-conditioning heat recovery device, which is used for heat recovery of the outdoor unit of the air-conditioning. The motor drives the half gear to rotate, so that the half gear is engaged with the upper and lower racks inside the moving rod in turn, so that the moving rod moves back and forth, thereby driving the water outlet box set at one end of the moving rod to reciprocate. The water inside the water outlet box can be evenly sprinkled onto the outdoor unit heat exchanger. After the water is heated by the heat generated by the outdoor unit heat exchanger, the heated water can fall into the water tank at the bottom. The water pump can pump the water into the water outlet box to realize circulating heating. The heat exchanger set on the water supply pipeline can use the heat generated by the outdoor unit heat exchanger for heat conduction, thereby heating the transported water.

[0004] During use, the above-mentioned device sprays water onto the surface of the heat exchanger through a nozzle, and uses the heat generated by the heat exchanger to heat the water. This method easily causes corrosion and scaling of the heat exchanger, greatly reducing the service life of the heat exchanger. For this reason, we propose a heat recovery device for a direct expansion air conditioning unit. Utility Model Content

[0005] In view of the deficiencies of the prior art, the present invention provides a heat recovery device for a direct expansion air-conditioning unit, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat recovery device of a direct expansion air-conditioning unit, comprising a unit body, the upper surface of the unit body is connected to a fan, the interior of the unit body is fixedly connected to a heat exchanger, a heat recovery component is arranged inside the unit body, and the heat recovery component comprises an elongated plate and a square tube, the upper surface of the elongated plate is connected to the heat exchanger, the elongated plate is arranged inside the unit body, the elongated plate is fixedly connected to the inner wall of the unit body, a plurality of fins are arranged on the lower surface of the elongated plate, and the elongated plate is provided with a plurality of fins. The interior is a cavity, the lower surface of the elongated plate is interconnected with a plurality of fins 1, and the plurality of fins 1 are tightly connected with fins 2, and the plurality of fins 2 are arranged on the upper surface of the inner wall of the unit body, and the plurality of fins 2 are fixedly connected to the upper surface of the inner wall of the unit body, and the outer walls of the plurality of fins 2 are provided with connecting pipes, and the outer walls of the plurality of fins 2 are connected to the connecting pipes, and the outer wall of the connecting pipe is connected with a control valve 1, and the plurality of fins 1 are connected through a square tube, and the interior of the unit body is fixedly connected with a filter screen 2, and the outer wall of the unit body is connected with an air outlet pipe:

[0007] The unit body is the main body of the device. The fan draws external air into the unit body. The heat exchanger generates heat when it works. At this time, the heat of the heat exchanger enters the long plate and fin one. The long plate, fin one and fin two are all designed with cavities. At this time, the medium is transported to multiple fins two through the connecting pipe. Fin two is in contact with fin one. The heat generated by fin one heats the medium in fin two, thereby realizing other uses. At the same time, the medium in fin two can cool the air in fin one and reduce the harm of greenhouse gases. The cooled gas is discharged through the square tube. Since the medium is not in direct contact with the fin surface and the heat exchanger, it effectively prevents the fins and the heat exchanger from corrosion and rust, and the medium is heated more evenly, which greatly improves the utilization efficiency of heat recovery.

[0008] As a preferred technical solution of the present invention, the purification component includes a filter box, the filter box is fixedly connected to the inner wall of the unit body, the outer wall of the filter box is connected to the connecting pipe, the interior of the filter box is movably connected to a filter screen 1, the outer wall of the filter box is connected to a water inlet pipe, and the outer wall of the water inlet pipe is connected to a control valve 2:

[0009] The medium enters the filter box through the water inlet pipe and is filtered by a pair of filter screens. The filtered medium is connected through a connecting pipe. By filtering the medium, the influence of scale and other impurities accumulated for a long time on the fins is reduced, thereby extending the service life of the fins.

[0010] The beneficial effects of the utility model are as follows: through the cooperation of the heat recovery component, since the medium does not directly contact the fin surface and the heat exchanger, the fins and the heat exchanger are effectively prevented from corrosion and rusting, reducing the company's replacement cost, and the medium is heated more evenly, greatly improving the heat exchange efficiency.

[0011] The utility model introduces the medium into the filter box through the water inlet pipe, filters the medium through a pair of filter screens, and connects the filtered medium through a connecting pipe. By filtering the medium, the influence of scale and the like generated by the accumulation of impurities in the medium for a long time on the fins is reduced, thereby extending the service life of the fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the unit body of the present utility model;

[0014] Figure 3 This is a schematic diagram of the heat recovery component structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the filter assembly structure of the present utility model.

[0016] In the figure: 1. Unit body; 2. Fan; 3. Heat recovery component; 301. Long plate; 302. Fin 1; 303. Fin 2; 304. Connecting pipe; 305. Square pipe; 306. Control valve 1; 4. Purification component; 401. Filter box; 402. Filter 1; 403. Control valve 2; 404. Water inlet pipe; 5. Filter 2; 6. Air outlet pipe; 7. Heat exchanger. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1

[0019] See also Figure 1 、 Figure 2 and Figure 3A heat recovery device for a direct expansion air conditioning unit includes a unit body 1, the upper surface of the unit body 1 is connected to a fan 2, the interior of the unit body 1 is fixedly connected to a heat exchanger 7, a heat recovery component 3 is provided inside the unit body 1, and the heat recovery component 3 includes an elongated plate 301 and a square tube 305. The upper surface of the elongated plate 301 is connected to the heat exchanger 7, the elongated plate 301 is provided inside the unit body 1, the elongated plate 301 is fixedly connected to the inner wall of the unit body 1, and a plurality of fins 302 are provided on the lower surface of the elongated plate 301. The interior of the elongated plate 301 is a cavity, and the lower surface of the elongated plate 301 is a rectangular tube. The fins 1 302 are interconnected, and the fins 2 303 are tightly connected between the fins 1 302. The fins 2 303 are arranged on the upper surface of the inner wall of the unit body 1. The fins 2 303 are fixedly connected to the upper surface of the inner wall of the unit body 1. The outer walls of the fins 2 303 are provided with a connecting pipe 304. The outer walls of the fins 2 303 are connected to the connecting pipe 304. The outer wall of the connecting pipe 304 is connected to the control valve 1 306. The fins 1 302 are connected through the square tube 305. The filter 2 5 is fixedly connected to the inside of the unit body 1, and the outer wall of the unit body 1 is connected to the air outlet pipe 6.

[0020] The unit body 1 is the main body of the device. The fan 2 draws external air into the unit body 1. The heat exchanger 7 generates heat when it works. At this time, the heat of the heat exchanger 7 enters the elongated plate 301 and fin 1 302. The elongated plate 301, fin 1 302 and fin 2 303 are all hollow designs. At this time, the medium is transported to multiple fins 2 303 through the connecting pipe 304. Fin 2 303 is in contact with fin 1 302. The heat generated by fin 1 302 heats the medium in fin 2 303, thereby achieving other uses. At the same time, the medium in fin 2 303 can cool the air in fin 1 302, reducing the harm of greenhouse gases. The cooled gas is discharged through the square tube 305. Since the medium does not directly contact the fin surface and the heat exchanger 7, it effectively prevents the fins and the heat exchanger 7 from corrosion and rust, and the medium is heated more evenly, which greatly improves the utilization efficiency of heat recovery.

[0021] See also Figure 2 and Figure 4 In this embodiment, the purification component 4 includes a filter box 401, which is fixedly connected to the inner wall of the unit body 1, and the outer wall of the filter box 401 is connected to the connecting pipe 304. The interior of the filter box 401 is movably connected to a filter screen 1 402, and the outer wall of the filter box 401 is connected to a water inlet pipe 404, and the outer wall of the water inlet pipe 404 is connected to a control valve 2 403.

[0022] The medium enters the filter box 401 through the water inlet pipe 404, and is filtered by the filter screen 402. The filtered medium is connected through the connecting pipe 304. By filtering the medium, the influence of impurities in the medium on the fins due to scale accumulation over a long period of time is reduced, thereby extending the service life of the fins.

[0023] Working principle: The fan 2 draws external air into the unit body 1, and the heat exchanger 7 generates heat when it works. At this time, the heat of the heat exchanger 7 enters the elongated plate 301 and fin 1 302. The elongated plate 301, fin 1 302 and fin 2 303 are all designed with cavities. The medium enters the filter box 401 through the water inlet pipe 404, and is filtered by the filter screen 1 402. The filtered medium is connected through the connecting pipe 304. By filtering the medium, the influence of impurities in the medium on the fins caused by scale and other factors due to long-term accumulation is reduced. At this time, the medium is transported to multiple fins 2 303 through the connecting pipe 304. Fins 2 303 are in contact with fins 1 302. The heat generated by fins 1 302 heats the medium in fins 2 303, thereby realizing other uses. At the same time, the medium in fins 2 303 can cool the air in fins 1 302.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heat recovery device for a direct expansion air conditioning unit, comprising a unit body (1), characterized in that: The upper surface of the unit body (1) is connected to a fan (2), the interior of the unit body (1) is fixedly connected to a heat exchanger (7), and the interior of the unit body (1) is provided with a heat recovery component (3) and a purification component (4); The heat recovery component (3) comprises an elongated plate (301) and a square tube (305), the upper surface of the elongated plate (301) is connected to the heat exchanger (7), the elongated plate (301) is arranged inside the unit body (1), the lower surface of the elongated plate (301) is provided with a plurality of fins (302), the plurality of fins (302) are tightly connected to fins (303), the plurality of fins (303) are arranged on the upper surface of the inner wall of the unit body (1), the outer walls of the plurality of fins (303) are provided with connecting pipes (304), the outer walls of the connecting pipes (304) are connected to a control valve (306), and the plurality of fins (302) are connected through the square tube (305).

2. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The purification component (4) includes a filter box (401), the filter box (401) is fixedly connected to the inner wall of the unit body (1), the outer wall of the filter box (401) is connected to the connecting pipe (304), the interior of the filter box (401) is movably connected to a filter screen 1 (402), the outer wall of the filter box (401) is connected to a water inlet pipe (404), and the outer wall of the water inlet pipe (404) is connected to a control valve 2 (403).

3. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The elongated plate (301) is fixedly connected to the inner wall of the unit body (1).

4. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The interior of the elongated plate (301) is a cavity, and the lower surface of the elongated plate (301) and the plurality of fins (302) are interconnected.

5. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The plurality of fins 2 (303) are fixedly connected to the upper surface of the inner wall of the unit body (1).

6. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The outer walls of the plurality of fins 2 (303) are connected to the connecting pipe (304).

7. The heat recovery device of a direct expansion air conditioning unit according to claim 1, characterized in that: The interior of the unit body (1) is fixedly connected to a second filter screen (5), and the outer wall of the unit body (1) is connected to an air outlet pipe (6).

Images