CN113587706A

CN113587706A - Folding heat exchanger and integral fresh air conditioner thereof

Info

Publication number: CN113587706A
Application number: CN202110877650.4A
Authority: CN
Inventors: 马国远; 宮悦轩; 许树学; 李富平
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2021-08-01
Filing date: 2021-08-01
Publication date: 2021-11-02
Anticipated expiration: 2041-08-01
Also published as: CN113587706B

Abstract

The invention discloses a folding heat exchanger and its integral fresh air conditioner, including folding heat exchanger and its upper cover box, lower cover box, closing plate A and closing plate B, the box body of the air conditioner and its indoor unit, outdoor unit, etc., the fold-shaped heat exchange core body made up by continuously pressing thin plate and its peripheral panel form the flat folding heat exchanger, its both ends and front and rear panels open the wind gap, the upper cover box and lower cover box cover behind the top and bottom wind gap of the folding heat exchanger respectively, and erect in the box body, closing the gap between the closing plate A and closing plate B and the box body, open the air vent communicated with the box body outside at the appropriate position where the upper cover box, lower cover box and box body are close, connect the indoor unit in the front chamber of the box body and the outdoor unit in the rear chamber into an organic whole with the connecting pipe. The folding heat exchanger body is small in weight, light, high in heat exchange efficiency, high in cost performance, safe, reliable and convenient to install and maintain.

Description

Folding heat exchanger and integral fresh air conditioner thereof

Technical Field

The invention mainly relates to the technical field of air conditioning equipment, in particular to a folding heat exchanger and an integral fresh air conditioner thereof.

Background

The process of replacing the existing refrigerant with high GWP such as R410A and R22 by adopting combustible refrigerant with low-temperature room effect potential (GWP) such as R290 and the like in the small air conditioner in China is further accelerated; on the other hand, people have higher and higher requirements on the health of indoor air environment, and the fresh air ventilation function with low energy consumption gradually becomes the standard allocation of air conditioners. Therefore, the chinese patent 202020470589.2 proposes a safe and reliable integral room air conditioner conforming to the concepts of environmental protection, energy saving and health, etc., which is particularly suitable for flammable refrigerants with low GWP and has the function of air exchange heat recovery. However, the ventilation heat recoverer included in the integral room air conditioner is still of a common type in the current market, has poor compatibility with the integral structure of the air conditioner, has large external dimension, and is not beneficial to further compacting the structure, reducing the cost and improving the energy efficiency of the integral room air conditioner.

Disclosure of Invention

The invention aims to design a folding type air-air heat exchanger based on ultrathin plates such as aluminum foils, copper foils and the like as a ventilation heat recoverer built in an air conditioner, and further design an integral air conditioner built in the folding type heat exchanger on the basis of the folding type air-air heat exchanger, wherein the integral air conditioner has efficient air exhaust and ventilation functions, and has the advantages of compact structure, high cost performance, safety, reliability and convenience in installation and maintenance.

In order to achieve the purpose of the invention, the technical scheme of the invention is a folding heat exchanger and an integral fresh air conditioner thereof, which are characterized in that: the integral fresh air conditioner comprises a folding heat exchanger 1, an upper cover box 5, a lower cover box 6, a sealing plate A7 and a sealing plate B8, a box body 2 of the air conditioner, an indoor unit 3 of the air conditioner, an outdoor unit 4 of the air conditioner and the like; the folding heat exchanger 1 is composed of a heat exchange core 101, an upper cover 102 and a lower cover 103 thereof, a front panel 104, a rear panel 105, a left side panel 106 and a right side panel 107 which are enclosed around the heat exchange core 101, and the like, wherein the heat exchange core 101 is folded or pressed into a continuous folded groove in a corrugated shape by a thin plate, an opening at the upper end of the folded groove is closed by the upper cover 102, and an opening at the lower end of the folded groove is closed by the lower cover 103. The upper part of the front panel 104 and the lower part of the rear panel 105 are respectively provided with an air opening, the front panel 104 and the rear panel 105 tightly clamp the heat exchange core body 101 in a bonding or fastening connection mode to respectively seal the openings of the folding grooves on the front and the back, only the folding grooves corresponding to the air openings of the front panel 104 and the rear panel 105 are communicated with the outside, the left side plate 106 and the right side plate 107 are respectively pressed on the two sides of the front panel 104 and the rear panel 105 through bonding or connecting pieces to seal the heat exchange core body 101 in the middle of the four plates; the box body 2 of the air conditioner is a square box shape and is formed by closing a top plate 201, a bottom plate 202, a front plate 203, a rear plate 204, a left plate 205, a right plate 206 and the like, the folding type heat exchanger 1 is arranged in the box body 2, an upper cover box 5 and a lower cover box 6 are respectively arranged at the upper end and the lower end of the box body and respectively cover the opening parts at the top and the bottom of a folding groove of the folding type heat exchanger 1, air holes communicated with the outside of the box body are arranged at the proper parts of the upper cover box 5, the lower cover box 6 and the box body 2, close to each other, gaps among the folding type heat exchanger 1, the upper cover box 5, the lower cover box 6, the top plate 201, the bottom plate 202, the left plate 205 and the right plate 206 of the box body 2 are closed by closing plates A7 and B8, and the inner space of the box body 2 is divided into a front part and a rear part; an indoor unit 3 of an air conditioner is arranged at the front chamber of a box body 2 between a folding type heat exchanger 1 and a front plate 203, an air port is formed at the position where a wall plate of the box body 2 is matched with the air inlet and the air outlet of the indoor unit 3, an outdoor unit 4 of the air conditioner is arranged at the rear chamber of the box body 2 between the folding type heat exchanger 1 and a rear plate 204, and air ports are also formed at the position where the wall plate of the box body 2 is matched with the air inlet and the air outlet of the outdoor unit 4; the indoor unit 3 and the outdoor unit 4 are constructed and connected substantially the same as a conventional split type air conditioner.

The heat exchange core 101 of the folding heat exchanger 1 of the air conditioner can be made of aluminum foil, copper foil, strip-shaped thin steel plate or a film made of high polymer material, the cross section of a folding groove can be in a V shape, a U shape or a trapezoid shape, and the like, and the wall surface of the folding groove can be flat, and various convex-concave shapes can also be pressed or drawn.

The upper cover 102 and the lower cover 103 of the folding heat exchanger 1 of the air conditioner may be prefabricated independent seals, or may be non-independent seals formed by folding, rolling or bonding part of the wall surface near the two ends of the folding groove.

The folding heat exchanger 1 of the air conditioner is provided with an upper cover box 5 and a lower cover box 6, and air holes communicated with the outside of a box body are provided with adjusting shutters or air valves; can be respectively arranged at the upper end and the lower end of the folding heat exchanger 1 and respectively covers the top opening part and the bottom opening part of the folding groove of the folding heat exchanger; or the size of the air inlet can be adjusted and then the air inlet is respectively arranged on the front panel and the rear panel to respectively cover the air inlet parts of the front panel 104 and the rear panel 105.

The folding heat exchanger 1 of the air conditioner may be placed in the middle of the cabinet so that the front panel 104 faces the front panel 204 of the cabinet 2, may be placed on one side of the cabinet so that the front panel 104 faces the left panel 205 or the right panel 206 of the cabinet 2, or may be placed close to the top panel 201 or the bottom panel 202 of the cabinet 2 so that the front panel 104 faces the top panel 201 or the bottom panel 202 of the cabinet 2.

The top plate 201, the bottom plate 202, the front plate 203 and the back plate 204, the left plate 205 and the right plate 206 of the box body 2 of the air conditioner can be a prefabricated whole plate or can be formed by splicing a plurality of plates, and the inner side of the air conditioner is provided with a heat insulation and/or noise elimination structure; the bottom plate 202 of the box 2 is provided with a structure or a component for collecting condensed water or defrosted water, and a drain pipe is arranged for guiding the water out of the box.

The sealing plate A7 and the sealing plate B8 of the air conditioner are provided with heat insulation and/or sound elimination structures, can be a whole prefabricated plate, can also be formed by splicing a plurality of pieces, and can also be completely or partially replaced by grooves formed on the plates of the box body 2.

The folding heat exchanger 1 of the air conditioner can utilize the fans of the indoor unit 3 and the outdoor unit 4 to exchange air and recover heat, and can also be specially provided with fans to exchange air and recover heat.

The indoor unit 3 and the outdoor unit 4 of the air conditioner can be pre-assembled into components and then placed in the box body 2, or can be assembled after being placed in the box body in a scattered manner, and the interfaces of all connecting pipes are welded.

The folding air-air heat exchanger designed by the invention is formed by folding ultrathin plate materials such as aluminum foil, copper foil and the like, is integrally flat, has compact structure and high heat exchange efficiency, and is remarkably improved in compatibility with the integral structure of an air conditioner.

Drawings

The invention is further described with reference to the accompanying drawings and the specific embodiments.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

Fig. 3 is an exploded view of the folded heat exchanger of the present invention.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 6 is an exploded view of the third embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a fourth embodiment of the present invention.

Fig. 8 is an exploded view of the fourth embodiment of the present invention.

The reference numbers in the figures illustrate:

1-folding heat exchanger, 2-box, 3-indoor unit, 4-outdoor unit, 5-upper cover box, 6-lower cover box, 7-closing plate a, 8-closing plate B, 101-heat exchange core, 102-upper cover, 103-lower cover, 104-front panel, 105-rear panel, 106-left panel, 107-right panel, 201-top panel, 202-bottom panel, 203-front panel, 204-rear panel, 205-left panel, 206-right panel, 2011-front chamber top panel, 2012-rear chamber top panel, 2032-rear chamber front panel, 2041-front chamber rear panel, 2051-front chamber left panel, 2052-rear chamber left panel, 2061-front chamber right panel, 2062-rear chamber right panel.

Detailed Description

Example one

Referring to fig. 1 and 2, the integral fresh air conditioner of the embodiment is provided with a folding heat exchanger vertically arranged in the middle of a box body, and comprises a folding heat exchanger 1, an upper cover box 5, a lower cover box 6, a sealing plate A7 and a sealing plate B8, a box body 2 of the air conditioner, an indoor unit 3 of the air conditioner, an outdoor unit 4 of the air conditioner and the like. The box 2 of the air conditioner is a square box, and is formed by closing a top plate 201, a bottom plate 202, a front plate 203 and a back plate 204, a left plate 205 and a right plate 206, etc., the folding heat exchanger 1 is parallel to the front plate 203 and the back plate 204, and is vertically arranged in the box 2, an upper cover box 5 and a lower cover box 6 are respectively arranged at the upper end and the lower end, and respectively cover the top and the bottom opening parts of the folding groove of the folding heat exchanger 1, an air hole communicated with the outside of the box is arranged at the proper position of the upper cover box 5, the lower cover box 6 and the box 2, and the gaps between the folding heat exchanger 1 and the upper cover box 5, the lower cover box 6 and the top plate 201, the bottom plate 202, the left plate 205 and the right plate 206 of the box 2 are closed by a closing plate A7 and a closing plate B8, thus dividing the inner space of the box 2 into a front part and a rear part: an indoor unit 3 of an air conditioner is arranged in a front chamber of a box body 2 between the folding heat exchanger 1 and a front plate 203, and an air port is formed in the position where the front plate 203 of the box body 2 is matched with the air inlet and outlet of the indoor unit 3; an outdoor unit 4 of an air conditioner is arranged in the rear chamber of the box body 2 between the folding type heat exchanger 1 and the rear plate 204, a strip seam type air port is formed in the position where a left plate 205 and a right plate 206 of the box body 2 match with the air inlet of the outdoor unit 4, and an air port is also formed in the position where the middle of the rear plate 204 of the box body 2 matches with the air outlet of the outdoor unit 4; the indoor unit 3 and the outdoor unit 4 are basically the same as the conventional split air conditioner in structure and connection, and are connected into a whole by a connecting copper pipe, and the joint is welded, and the working medium is R290.

Referring to fig. 3, the folding heat exchanger 1 is composed of a heat exchange core 101, an upper cover 102 and a lower cover 103 thereof, and a front panel 104, a rear panel 105, a left side panel 106 and a right side panel 107, etc. enclosed around the heat exchange core 101, the heat exchange core 101 is repeatedly pressed by aluminum foil into a continuous corrugated folding groove, an upper end opening of the front folding groove is closed by the upper cover 102, and a lower end opening of the rear folding groove is closed by the lower cover 103. The upper part of the front panel 104 and the lower part of the rear panel 105 are respectively provided with a square air port, the front panel 104 and the rear panel 105 tightly clamp the heat exchange core body 101 in a bonding or fastening connection mode to respectively seal the folding groove openings at the front and the back, only the folding grooves corresponding to the air ports of the front panel 104 and the rear panel 105 are communicated with the outside, the left side plate 106 and the right side plate 107 are respectively pressed on the two sides of the front panel 104 and the rear panel 105 through bonding or connecting pieces to seal the heat exchange core body 101 in the middle of the four plates.

Thus, outdoor fresh air is sucked from the lower end of the heat exchange core body 101, flows through the forward folded groove of the heat exchange core body, flows out of the air opening of the front panel, is sucked by the air inlet of the indoor unit 3, and is sprayed into the room from the air outlet of the indoor unit 3; indoor exhaust air is sucked from the upper end of the heat exchange core body 101, flows through the backward folded groove and then flows out from the air opening of the rear panel, is sucked by the air inlet of the outdoor unit 4 and is exhausted to the outdoor from the air outlet of the indoor unit 3.

Example two

Referring to fig. 4, this embodiment is an integral fresh air conditioner in which an indoor air outlet is disposed at the top of a cabinet. Compared with the first embodiment, the upper cover box 5 of the folding heat exchanger 1 extends forwards to the front part of the top plate 201 of the box body 2, a strip-shaped air opening is formed at the matching part of the top plate 201 and the upper cover box 5, and indoor exhaust air can be sucked into the heat exchanger from the air opening; the structure and dimensions of the closing plate a7 and the closing plate B8 are changed correspondingly, so that the gap generated by the deformation of the upper cover box 5 can be closed. Therefore, when the air conditioner is installed across the wall, the wall can be prevented from shielding the air opening.

EXAMPLE III

Referring to fig. 5 and fig. 6, this embodiment is an integral fresh air conditioner with a folding heat exchanger installed near the bottom of the cabinet, compared with the first embodiment, the folding heat exchanger 1 is placed on the bottom plate 202 of the cabinet 2 approximately in parallel, so that the end air port of the folding heat exchanger 1 at the front chamber is placed under the air outlet of the indoor unit 3, the panel air port faces the bottom plate 202, and the air port is opened at the matching position of the bottom plate 202; the end part air inlet of the rear chamber is positioned near the air inlet of the outdoor unit 4, the panel air inlet faces the top plate 201, the upper cover box 5 is arranged on the panel air inlet after being matched with the size and covers the panel air inlet, and the positions of the upper cover box 5, which are close to the left plate and the right plate of the box body, are provided with an orifice for feeding fresh air. In the middle position of the box body 2, the front-chamber rear plate 2041 seals the rear of the front chamber, and correspondingly, the front-chamber top plate 2011, the left plate 2051 and the right plate 2061 respectively seal the top surface and two side surfaces of the front chamber; the rear front panel 2032 closes the rear front and correspondingly the rear top panel 2012, left panel 2052 and right panel 2062 close the rear top and two sides, respectively. Thus, except that the bottoms of the box bodies 2 below the folding type heat exchanger 1 are connected together, the middle part of the box body 2 presents a deep concave groove. Accordingly, the cover plates a7 and B8 are sized to be placed on either side of the folded heat exchanger 1 in the recess of the cabinet 2. The rest is the same as the first embodiment.

Example four

Referring to fig. 7 and 8, the embodiment is an integral fresh air conditioner with a folding heat exchanger installed close to a side plate of a box body, compared with the first embodiment, the folding heat exchanger 1 is installed close to a left plate 205 approximately in parallel with a side plate of the box body 2, a panel air port of the folding heat exchanger 1 located at a front chamber faces to the left plate 205, an air port is formed at a position where the left plate 205 is matched, an end air port is located at the left side of an indoor unit 3, an upper cover box 5 is installed on the end air port after being matched with the size and covers the end air port, an air port is formed at a position, close to an air inlet of the indoor unit 3, of the upper part of the upper cover box 5, and the lower part of the upper cover box is isolated from an air outlet of the indoor unit 3; the end part air inlet of the rear chamber is arranged near the air inlet of the outdoor unit 4, the lower cover box 6 is matched with the panel air inlet of the rear chamber, and the position of the lower cover box 6 close to the top, the bottom plate or the left plate 205 of the box body is provided with an orifice for introducing fresh air. Accordingly, the cover plate a7 and/or the cover plate B8 are sized to fit within the interior of the cabinet 2 at an intermediate location to close the gap between the folded heat exchanger 1 and the top 201, bottom 202, left 205 and right 206 panels of the cabinet 2, isolating the front and rear chambers of the cabinet 2. The rest is the same as the first embodiment.

Claims

1. A folding heat exchanger characterized in that: the folding heat exchanger (1) consists of a heat exchange core body (101), an upper sealing cover (102) and a lower sealing cover (103) of the heat exchange core body, and a front panel (104), a rear panel (105), a left side plate (106) and a right side plate (107) which are enclosed and blocked around the heat exchange core body; the heat exchange core body (101) is folded or pressed into a continuous corrugated folding groove by a thin plate, an opening at the upper end part of the forward folding groove is closed by an upper sealing cover (102), and an opening at the lower end part of the backward folding groove is closed by a lower sealing cover (103); the upper part of the front panel (104) and the lower part of the rear panel (105) are respectively provided with an air opening, the heat exchange core body (101) is clamped by the front panel (104) and the rear panel (105) in a bonding or fastening connection mode, the folding groove openings at the front and the back of the heat exchange core body are respectively sealed, the folding grooves corresponding to the air openings of the front panel (104) and the rear panel (105) are communicated with the outside, the left side plate (106) and the right side plate (107) are respectively pressed on the two sides of the front panel (104) and the rear panel (105) through bonding or connecting pieces, and the heat exchange core body (101) is sealed in the middle of the four plates.

2. A folding heat exchanger according to claim 1, wherein: the folding heat exchanger (1) is arranged in a box body (2) of the air conditioner, the box body (2) is in a square box shape and is formed by sealing a top plate (201), a bottom plate (202), a front plate (203), a rear plate (204), a left plate (205) and a right plate (206); the upper cover box (5) and the lower cover box (6) respectively cover the opening parts at the top and the bottom of the folding groove of the folding heat exchanger (1); the positions of the upper cover box (5), the lower cover box (6) and the box body (2) close to each other are provided with air holes communicated with the outside of the box body; gaps among the folding heat exchanger (1), the upper cover box (5), the lower cover box (6), a top plate (201), a bottom plate (202), a left plate (205) and a right plate (206) of the box body (2) are sealed by a sealing plate A (7) and a sealing plate B (8), and the inner space of the box body (2) is divided into a front part and a rear part; an indoor unit (3) of the air conditioner is placed in a front chamber of a box body (2) between a folding type heat exchanger (1) and a front plate (203), an air opening is formed in a position where a wall plate of the box body (2) is matched with the air inlet and the air outlet of the indoor unit (3), an outdoor unit (4) of the air conditioner is placed in a rear chamber of the box body (2) between the folding type heat exchanger (1) and a rear plate (204), an air opening is formed in a position where the wall plate of the box body (2) is matched with the air inlet and the air outlet of the outdoor unit (4), and the folding type heat exchanger (1), the box body (2), the indoor unit (3) and the outdoor unit (4) are connected to form the integral fresh air conditioner.

3. A folding heat exchanger according to claim 1, wherein: the heat exchange core body (101) of the folding heat exchanger (1) is made of aluminum foil, copper foil, a strip-shaped thin steel plate or a film made of high polymer materials, and the cross section of the folding groove is V-shaped, U-shaped or trapezoidal; the wall surface of the folding groove is flat, or is in a convex-concave shape formed by pressing or drawing.

4. A folding heat exchanger according to claim 1, wherein: the upper sealing cover (102) and the lower sealing cover (103) of the folding type heat exchanger (1) are prefabricated independent sealing pieces or non-independent sealing pieces formed by folding, rolling edges or bonding partial wall surfaces close to two ends of a folding groove.

5. A folding heat exchanger according to claim 1, wherein: an upper cover box (5) and a lower cover box (6) of the folding heat exchanger (1), and an air hole communicated with the outside of the box body is provided with an adjusting shutter or an air valve; the upper cover box (5) and the lower cover box (6) are respectively arranged at the upper end and the lower end of the box body and respectively cover the opening parts at the top and the bottom of the folding groove of the folding heat exchanger (1); the upper cover box (5) and the lower cover box (6) are respectively arranged at the front panel and the rear panel after being adjusted in size, and respectively cover the air inlet parts of the front panel (104) and the rear panel (105).

6. A foldable heat exchanger according to claim 2, wherein: the folding heat exchanger (1) can be placed in the middle of the box body to enable the front panel (104) to face the front plate (204) of the box body (2), or placed on one side of the box body to enable the front panel (104) to face the left plate (205) or the right plate (206) of the box body (2), or placed close to the top plate (201) or the bottom plate (202) of the box body (2) to enable the front panel (104) to face the top plate (201) or the bottom plate (202) of the box body (2).

7. A foldable heat exchanger according to claim 2, wherein: the top plate (201), the bottom plate (202), the front plate (203), the rear plate (204), the left plate (205) and the right plate (206) of the box body (2) are prefabricated and formed into a whole plate or formed by splicing a plurality of plates, and the inner sides of the plates are provided with heat insulation and/or sound attenuation structures; a structure or a component for collecting condensed water or defrosted water is arranged on a bottom plate (202) of the box body (2), and a drain pipe is arranged to guide the water to the outside of the box body.

8. A foldable heat exchanger according to claim 2, wherein: the sealing plate A (7) and the sealing plate B (8) have heat insulation and/or sound elimination structures, and are prefabricated and formed into a whole plate, or formed by splicing a plurality of plates, or are completely or partially replaced by grooves formed in the plates of the box body (2).

9. A foldable heat exchanger according to claim 2, wherein: the folding heat exchanger (1) utilizes fans of the indoor unit (3) and the outdoor unit (4) to exchange air and recover heat, or is specially provided with a fan to exchange air and recover heat.

10. A foldable heat exchanger according to claim 2, wherein: the indoor unit (3) and the outdoor unit (4) are preassembled into parts and then placed in the box body (2), or parts are placed in the box body and then assembled, and the interfaces of all connecting pipes are welded.