A heat exchanger

Abstract

A heat exchanger comprises an air inlet frame, an air outlet frame and a heat exchange membrane. The air inlet frame and the air outlet frame are staggered to facilitate heat exchange between staggered inlet and outlet air flows. The heat exchange membrane is fixedly installed between the air inlet frame and the air outlet frame. Air outlet noise reduction cotton and hydrophilic noise reduction cotton are fixedly installed in the air outlet frame. The air outlet noise reduction cotton is installed at the front end of the hydrophilic noise reduction cotton. The setting of the air outlet noise reduction cotton facilitates noise reduction of the gas discharged after passing through the heat exchange membrane, and then part of the water molecules are retained at the front end of the hydrophilic noise reduction cotton through the hydrophilic noise reduction cotton, which facilitates the heat exchange membrane to penetrate the water molecules and improves the comfort of the fresh air system. Air inlet noise reduction cotton is fixedly installed in the air inlet frame, and air flow holes are dug in the air inlet noise reduction cotton. The setting of the air flow holes facilitates the improvement of the passing efficiency of the air inlet airflow through the air inlet noise reduction cotton, and the air inlet noise reduction cotton can be used to reduce the noise of the air entering the room.

Description

Technical Field

[0001] The invention belongs to the field of air heat exchange membranes for fresh air systems, and in particular relates to an air heat exchanger. Background Art

[0002] With the development of industry and the serious pollution of the living environment, fresh air machines and air conditioners have become popular all over the world. Air conditioning and fresh air have become essential requirements for human life. The introduction of fresh air leads to the loss of one-third of the air conditioning energy. Energy recovery has become an important energy-saving means for introducing fresh air and using air conditioners. Energy conservation, emission reduction and air pollution control have become increasingly important topics. Air energy recovery has long been popular in developed countries, but China is still in its infancy. In order to accelerate the development of air energy recovery devices in China, the country has included the application and energy recovery requirements of air energy recovery devices in the national building standards. The heat exchange membranes currently on the market make a lot of noise when working, and the water molecule exchange efficiency of the heat exchange membrane is low, which can easily cause the loss of indoor water seals and cause human discomfort. Summary of the invention

[0003] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide an air heat exchanger. The heat exchange membrane has good quiet performance and improves the moisture exchange in the heat exchange membrane, thereby preventing indoor moisture loss.

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

[0005] A heat exchanger comprises an air inlet frame, an air outlet frame and a heat exchange membrane. The air inlet frame and the air outlet frame are arranged alternately. The heat exchange membrane is fixedly installed between the air inlet frame and the air outlet frame. Air outlet noise reduction cotton and hydrophilic noise reduction cotton are fixedly installed in the air outlet frame. The air outlet noise reduction cotton is installed at the front end of the hydrophilic noise reduction cotton. The air inlet noise reduction cotton is fixedly installed in the air inlet frame. Air flow holes are dug in the air inlet noise reduction cotton.

[0006] Furthermore, the air inlet frame and the air outlet frame have the same structure, both of which include a frame, a mounting bar and a guide bar assembly, and the mounting bar and the guide bar assembly are both fixedly connected in the frame.

[0007] Furthermore, the mounting bar includes at least a first mounting bar and a second mounting bar, the first mounting bar and the second mounting bar are arranged parallel to each other, the guide bar assembly includes a first guide bar, a second guide bar, a third guide bar, a fourth guide bar and a fifth guide bar, the first guide bar and the fifth guide bar are symmetrical about the center of the frame, similarly, the second guide bar and the fourth guide bar are symmetrical about the center, and the third guide bar is fixedly connected between the second guide bar and the fourth guide bar.

[0008] Furthermore, an air inlet and an air outlet are provided on the frame, and correspondingly, an air flow channel is provided in the mounting bar and the guide bar assembly, and the air flow channel, the air inlet and the air outlet are located on the same straight line.

[0009] Furthermore, air outlet noise reduction cotton is installed in the frame air inlet of the air outlet frame, and hydrophilic noise reduction cotton is installed in the frame air outlet of the air outlet frame. Similarly, hydrophilic noise reduction cotton is also fixedly installed in the second mounting strip and the first guide strip of the air outlet frame.

[0010] Furthermore, air inlet noise reduction cotton is fixedly installed in the mounting strips and guide strip components of the air inlet frame.

[0011] Furthermore, the air inlet noise reduction cotton includes a noise reduction cotton unit, an air flow hole is dug at the center of the noise reduction cotton unit, and a plurality of spoiler columns are fixedly connected in the air flow hole.

[0012] Furthermore, the spoiler columns are arranged along the radial direction of the air hole, the adjacent spoiler columns are arranged crosswise, and the spoiler columns in the air flow hole are distributed in a spiral shape.

[0013] Furthermore, the components of the air outlet noise reduction cotton and the air inlet noise reduction cotton are the same, including at least 75%-85% polyester fiber, 15%-25% a mixture of silica and alumina; the hydrophilic noise reduction cotton includes at least 70%-75% polyester fiber, 15%-20% a mixture of silica and alumina, and 5%-15% a mixture of epoxy resin, water-soluble acrylic resin, and amino resin.

[0014] Furthermore, the porosity of the air outlet noise reduction cotton and the air inlet noise reduction cotton is 60%-75%, and the porosity of the hydrophilic noise reduction cotton is 30%-40%.

[0015] The beneficial effect of the present invention is that, through the setting of the air outlet noise reduction cotton, it is convenient to reduce the noise of the gas discharged after passing through the heat exchange membrane, thereby improving the quiet effect of the heat exchange membrane, and then using the hydrogen water noise reduction cotton to retain some water molecules at the front end of the hydrophilic noise reduction cotton, which is convenient for the heat exchange membrane to pass through the water molecules, so that the water molecules flowing through the air outlet frame flow into the air inlet frame through the heat exchange membrane, thereby maintaining the humidity of the air flowing into the room and improving the comfort of the fresh air system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the heat exchange membrane.

[0017] Figure 2 It is a structural diagram of the air inlet frame.

[0018] Figure 3 It is a structural diagram of the air intake noise reduction cotton.

[0019] Figure numerals: air inlet frame 1, air outlet frame 2, heat exchange membrane 3, air flow hole 7, frame 8, mounting bar 9, guide bar assembly 10, first mounting bar 11, second mounting bar 12, first guide bar 13, second guide bar 14, third guide bar 15, fourth guide bar 16, fifth guide bar 17, air inlet 18, air outlet 19, air flow channel 20, spoiler column 21. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] A heat exchanger comprises an air inlet frame 1, an air outlet frame 2 and a heat exchange membrane 3. The air inlet frame 1 and the air outlet frame 2 are arranged in a staggered manner to facilitate heat exchange between the staggered inflow and outflow airflows. The heat exchange membrane 3 is fixedly installed between the air inlet frame 1 and the air outlet frame 2. Air outlet noise reduction cotton and hydrophilic noise reduction cotton are fixedly installed in the air outlet frame 2. The air outlet noise reduction cotton is installed at the front end of the hydrophilic noise reduction cotton. Through the arrangement of the air outlet noise reduction cotton, it is convenient to reduce the noise of the gas discharged after passing through the heat exchange membrane, thereby improving the mute effect of the heat exchange membrane. Then, part of the water molecules are retained at the front end of the hydrophilic noise reduction cotton through the hydrogen-water noise reduction cotton 5, which is convenient for the heat exchange membrane 3 to penetrate the water molecules, so that the water molecules flowing through the air outlet frame 2 flow into the air inlet frame through the heat exchange membrane 3, thereby maintaining the humidity of the air flowing into the room and improving the comfort of the fresh air system. The air inlet noise reduction cotton is fixedly installed in the air inlet frame 1. An air flow hole 7 is dug inside the air inlet noise reduction cotton. The air flow hole 7 is arranged to improve the passing efficiency of the air flow through the air inlet noise reduction cotton, and the air flow entering the room can be noise-reduced through the air inlet noise reduction cotton.

[0022] The structures of the air inlet frame 1 and the air outlet frame 2 are consistent, and both include a frame 8, a mounting bar 9 and a guide bar assembly 10. The mounting bar 9 and the guide bar assembly 10 are both fixedly connected in the frame 8. The frame 8 is used to fix the frame. The mounting bar 9 and the guide bar assembly 10 are used to fit with the heat exchange membrane in the frame 8 to prevent the heat exchange membrane from shaking and generating noise during use. The guide bar assembly 10 is staggered relative to the mounting bar 9. The airflow in the frame 8 is guided by the guide bar assembly 10, and the guide bar assembly 10 is fixed by the mounting bar to prevent the guide bar assembly 10 from shaking.

[0023] The mounting bar 9 at least includes a first mounting bar 11 and a second mounting bar 12, and the first mounting bar 11 and the second mounting bar 12 are arranged parallel to each other. The guide bar assembly 10 includes a first guide bar 13, a second guide bar 14, a third guide bar 15, a fourth guide bar 16 and a fifth guide bar 17. The first guide bar 13 and the fifth guide bar 17 are symmetrical about the center of the frame 8. Similarly, the second guide bar 14 and the fourth guide bar 16 are symmetrical about the center of the frame 8. The third guide bar 15 is fixedly connected between the second guide bar 14 and the fourth guide bar 16.

[0024] In some preferred embodiments, the first guide bar 13 and the second guide bar 14 are arranged in an arc shape, and the third guide bar 15 is a sinusoidal waveform. Through the coordinated arrangement of guide bars of this shape, it is convenient to fix the heat exchange membrane in the frame 8, prevent the heat exchange membrane from relative shaking, and more effectively reduce the contact area between the guide bar and the heat exchange membrane, thereby increasing the area of ​​the heat exchange membrane that can effectively exchange heat, and improving the efficiency of heat and water molecule exchange.

[0025] The frame 8 is provided with an air inlet 18 and an air outlet 19. Correspondingly, an air flow channel 20 is provided in the mounting strip 9 and the guide strip assembly 10. The air flow channel 20, the air inlet 18 and the air outlet 19 are located on the same straight line, so that the airflow after passing through the frame is still linear, preventing the airflow from forming turbulence in the frame, and further preventing the generation of noise.

[0026] Air outlet noise reduction cotton is installed in the air inlet 18 of the frame 8 of the air outlet skeleton 2, and hydrophilic noise reduction cotton is installed in the air outlet 19 of the frame 8 of the air outlet skeleton 2. Similarly, hydrophilic noise reduction cotton is also fixedly installed in the second mounting strip 12 and the first guide strip 13 of the air outlet skeleton 2, so that water molecules are blocked in the heat exchange membrane at the front end of the second mounting strip 12 and the first guide strip 13, so as to increase the water molecule permeability of the heat exchange membrane and increase the humidity of the air flowing into the room.

[0027] Air inlet noise reduction cotton is fixedly installed in the mounting strip 9 and the guide strip assembly 10 of the air inlet frame 1. The setting of the air inlet noise reduction cotton can facilitate the reduction of the air flow velocity in the air inlet frame 1, thereby reducing the noise of the air inlet frame and improving the quiet effect at the air inlet frame.

[0028] The air inlet noise reduction cotton includes a noise reduction cotton unit. The air flow hole 7 is dug at the center of the noise reduction cotton unit. A plurality of spoiler columns 21 are fixedly connected in the air flow hole 7. The spoiler columns 21 are arranged along the radial direction of the air hole. Adjacent spoiler columns 21 are cross-arranged. The spoiler columns 21 in the air flow hole 7 are distributed in a spiral shape, which makes it easy to make the airflow passing through the air flow hole 7 spiral, making the airflow path longer, thereby reducing the airflow velocity and reducing the airflow noise.

[0029] The structures of the air outlet noise reduction cotton and the air inlet noise reduction cotton are different but the components are the same, which include at least 75%-85% polyester fiber and a mixture of 15%-25% silica and alumina. The mixture of silica and alumina is filled in the noise reduction cotton to enhance the noise reduction effect of the noise reduction cotton; the hydrophilic noise reduction cotton includes at least 70%-75% polyester fiber, a mixture of 15%-20% silica and alumina, and a mixture of 5%-15% epoxy resin, water-soluble acrylic resin, and amino resin. The hydrophilicity of the noise reduction cotton is improved by the mixture of epoxy resin, water-soluble acrylic resin, and amino resin to reduce the discharge of water molecules, and the noise reduction performance of the noise reduction cotton is improved by the mixture of silica and alumina.

[0030] The porosity of the air outlet noise reduction cotton and the air inlet noise reduction cotton is 60%-75%, which improves the air flow while ensuring the noise reduction effect. The porosity of the hydrophilic noise reduction cotton is 30%-40%, which improves the water locking performance by reducing the porosity and improves the water permeability of the heat exchange membrane.

[0031] In some preferred methods, when installing the outlet noise reduction cotton, hydrophilic noise reduction cotton, and inlet noise reduction cotton, glue is first applied to the air inlet, outlet, and air flow channel, and then different noise reduction cottons are screened into the air inlet, outlet, and air flow channel.

[0032] The above heat exchange membrane was installed in the fresh air system for testing, and the test results are shown in the following table;

[0033]

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0035] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A heat exchanger, comprising an air inlet frame (1), an air outlet frame (2) and a heat exchange membrane (3), wherein the air inlet frame (1) and the air outlet frame (2) are arranged alternately, and the heat exchange membrane (3) is fixedly installed between the air inlet frame (1) and the air outlet frame (2), characterized in that: The air outlet frame (2) is fixedly installed with air outlet noise reduction cotton and hydrophilic noise reduction cotton, the air outlet noise reduction cotton is installed at the front end of the hydrophilic noise reduction cotton, the air inlet frame (1) is fixedly installed with air inlet noise reduction cotton, and air flow holes (7) are dug in the air inlet noise reduction cotton; The components of the outlet noise reduction cotton and the inlet noise reduction cotton are the same, including at least 75%-85% polyester fiber, 15%-25% a mixture of silica and alumina; the hydrophilic noise reduction cotton includes at least 70%-75% polyester fiber, 15%-20% a mixture of silica and alumina, and 5%-15% a mixture of epoxy resin, water-soluble acrylic resin, and amino resin.

2. A heat exchanger according to claim 1, characterized in that: The air inlet frame (1) and the air outlet frame (2) have the same structure, both comprising a frame (8), a mounting bar (9) and a guide bar assembly (10), wherein the mounting bar (9) and the guide bar assembly (10) are both fixedly connected in the frame (8).

3. A heat exchanger according to claim 2, characterized in that: The mounting bar (9) comprises at least a first mounting bar (11) and a second mounting bar (12), the first mounting bar (11) and the second mounting bar (12) being arranged parallel to each other, the guide bar assembly (10) comprising a first guide bar (13), a second guide bar (14), a third guide bar (15), a fourth guide bar (16) and a fifth guide bar (17), the first guide bar (13) and the fifth guide bar (17) being symmetrical about the center of the frame (8), and similarly, the second guide bar (14) and the fourth guide bar (16) being symmetrical about the center, and the third guide bar (15) being fixedly connected between the second guide bar (14) and the fourth guide bar (16).

4. A heat exchanger according to claim 3, characterized in that: The frame (8) is provided with an air inlet (18) and an air outlet (19), and correspondingly, an air flow channel (20) is provided in the mounting strip (9) and the guide strip assembly (10), and the air flow channel (20), the air inlet (18), and the air outlet (19) are located on the same straight line.

5. A heat exchanger according to claim 4, characterized in that: The air inlet (18) of the frame (8) of the air outlet frame (2) is installed with air outlet noise reduction cotton, and the air outlet (19) of the frame (8) of the air outlet frame (2) is installed with hydrophilic noise reduction cotton. Similarly, the second installation strip (12) and the first guide strip (13) of the air outlet frame (2) are also fixedly installed with hydrophilic noise reduction cotton.

6. A heat exchanger according to claim 4, characterized in that: Air inlet noise reduction cotton is fixedly installed in the mounting strip (9) and the guide strip assembly (10) of the air inlet frame (1).

7. A heat exchanger according to claim 1, characterized in that: The air inlet noise reduction cotton comprises a noise reduction cotton unit, an air flow hole (7) is dug at the center of the noise reduction cotton unit, and a plurality of spoiler columns (21) are fixedly connected in the air flow hole (7).

8. A heat exchanger according to claim 7, characterized in that: The spoiler columns (21) are arranged along the radial direction of the air hole, and adjacent spoiler columns (21) are arranged crosswise, so that the spoiler columns (21) in the air flow hole (7) are distributed in a spiral shape.

9. A heat exchanger according to claim 1, characterized in that: The porosity of the air outlet noise reduction cotton and the air inlet noise reduction cotton is 60%-75%, and the porosity of the hydrophilic noise reduction cotton is 30%-40%.

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