Three-pipe constant-temperature fresh air dehumidifier

Abstract

The utility model discloses a three-pipe constant-temperature fresh air dehumidifier. The three-pipe constant-temperature fresh air dehumidifier comprises a first dehumidification device and a second dehumidification device, the first dehumidification device comprises an outdoor fin type heat exchanger, a first direct current fan, a four-way reversing valve and an inverter compressor; the outdoor fin heat exchanger, the four-way reversing valve and the inverter compressor are connected with the second dehumidification device through pipelines. The second dehumidification device comprises an indoor fin heat exchanger and an indoor reheater. The indoor fin type heat exchanger and the indoor reheater are connected with the outdoor fin type heat exchanger, the four-way reversing valve and the inverter compressor respectively. According to the utility model, the first dehumidification device is arranged outdoors, fresh air is introduced through the fresh air port, and the indoor fin heat exchanger and the reheater are used for treatment, so that the comfort level of indoor air can be improved, and a constant-temperature and constant-humidity environment can be maintained. And an indoor reheater in the second dehumidification device can heat and adjust the air in the dehumidification process, so that the stability of the indoor temperature is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of fresh air equipment, in particular to a three-pipe constant temperature type fresh air dehumidifier. Background Art

[0002] As people's requirements for indoor air quality and comfort continue to increase, fresh air dehumidifiers have come into being. Fresh air dehumidifiers are highly efficient air purification and dehumidification equipment that can circulate dehumidification and purification in the indoor air, while also dehumidifying and purifying the outdoor fresh air. On the one hand, it circulates, purifies, and dehumidifies the indoor air. On the other hand, it introduces fresh outdoor air that has been sterilized, disinfected, filtered, and dehumidified into the room, thereby improving indoor air quality. Through the supply and induction of air, fresh air dehumidifiers achieve indoor air convection, maximizing air replacement. At the same time, with the help of built-in purification and dehumidification systems, they ensure that the air entering the room is clean, non-humid, and healthy.

[0003] In the prior art, for example, the technical solution described in the patent with publication number: CN217635956U is: a fresh air dehumidifier, by setting a first heat recovery device and a second heat recovery device, so that the humid hot fresh air is refrigerated and dehumidified by the refrigeration dehumidification coil, and the dry cold air is heat-exchanged with the indoor hot exhaust air in the second heat recovery device, thereby heating the dry cold air and then sending it into the room to make the room warm and comfortable.

[0004] Current fresh air dehumidifiers typically utilize a top-intake, top-outlet, or top-intake, top-down and bottom-outlet design for air exchange. However, when indoor humidity is high or a certain amount of harmful gases is present, this design is not conducive to effectively discharging moist air and heavier harmful gases. In particular, during the dehumidification process, the alternating circulation of indoor and outdoor air makes it difficult to prevent moist air from entering the room, seriously affecting the efficiency of the fresh air dehumidifier. Utility Model Content

[0005] The present invention aims to provide a three-pipe constant-temperature fresh air dehumidifier to address the problem mentioned in the background art, in which fresh air dehumidifiers typically employ a top-inlet, top-outlet, or top-inlet, top-bottom outlet design for air exchange. However, when indoor air humidity is high or a certain amount of harmful gases is present, this design is not conducive to effectively discharging humid air and heavier harmful gases.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A three-pipe constant temperature fresh air dehumidifier, comprising a first dehumidification device and a second dehumidification device; wherein the first dehumidification device is arranged outdoors, and the second dehumidification device is arranged indoors; the first dehumidification device and the second dehumidification device are connected;

[0008] The first dehumidification device includes an outdoor fin heat exchanger, a first DC fan, a four-way reversing valve, and a variable frequency compressor; the outdoor fin heat exchanger is connected to the four-way reversing valve, which is connected to the variable frequency compressor; the outdoor fin heat exchanger, the four-way reversing valve, and the variable frequency compressor are respectively connected to the second dehumidification device through pipelines, and the first DC fan is arranged below the outdoor fin heat exchanger;

[0009] The second dehumidification device includes an indoor fin heat exchanger, an indoor reheater, a fresh air inlet, an air supply outlet and a second DC fan; the indoor fin heat exchanger and the indoor reheater are respectively connected to the outdoor fin heat exchanger, the four-way reversing valve and the variable frequency compressor, the fresh air inlet and the air supply outlet are respectively arranged on the left and right sides of the second dehumidification device, and the second DC fan is arranged between the indoor reheater and the air supply outlet.

[0010] According to the above technical solution, the outdoor fin heat exchanger is also connected to one end of the electronic expansion valve A, and the other end of the electronic expansion valve A is connected to the stop valve B.

[0011] According to the above technical solution, the stop valve B is connected to one end of the stop valve E through a pipeline, and the other end of the stop valve E is connected to the indoor reheater according to the above technical solution.

[0012] According to the above technical solution, the first dehumidification device also includes a stop valve A, one end of which is connected to the four-way reversing valve, and the other end of which is connected to one end of the stop valve D through a pipeline.

[0013] According to the above technical solution, the other end of the stop valve D is connected to the indoor fin heat exchanger.

[0014] According to the above technical solution, the first dehumidification device also includes a stop valve C, one end of which is connected to the four-way reversing valve and the variable frequency compressor respectively, and the other end of the stop valve C is connected to the stop valve F through a pipeline, and the stop valve F is connected to one end of the electronic expansion valve B, and the other end of the electronic expansion valve B is connected to the indoor reheater.

[0015] According to the above technical solution, the second dehumidification device is further provided with a return air inlet, the return air inlet and the fresh air inlet are arranged on the same side, and the return air inlet is arranged below the fresh air inlet.

[0016] According to the above technical solution, a filter assembly is further provided on the inner side of the return air inlet and the fresh air inlet, and the filter assembly is used to filter the air introduced from the return air inlet and the fresh air inlet.

[0017] According to the above technical solution, the filter assembly includes a primary filter and a high efficiency filter.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In this utility model, by installing a first dehumidifier outdoors, introducing fresh air through a fresh air vent, and processing it through an indoor fin heat exchanger and reheater, the indoor air comfort level can be improved and a constant temperature and humidity environment can be maintained. The indoor reheater in the second dehumidifier heats and regulates the air during the dehumidification process, ensuring a stable indoor temperature and preventing the indoor temperature from dropping too low due to dehumidification. Separating the dehumidification and air supply processes avoids the drawbacks of traditional integrated systems and allows for more flexible adjustment of air volume and dehumidification intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the dehumidifier of the utility model.

[0021] Markings in the figure: 100-outdoor fin heat exchanger, 200-first DC fan, 300-four-way reversing valve, 400-variable frequency compressor, 500-electronic expansion valve A, 600-stop valve A, 700-stop valve B, 800-stop valve C, 900-indoor fin heat exchanger, 110-indoor reheater, 111-second DC fan, 112-supply air outlet, 113-electronic expansion valve B, 114-solenoid valve, 115-fresh air outlet, 116-return air outlet, 117-stop valve D, 118-stop valve E, 119-stop valve F, 120-primary filter, 121-high efficiency filter, 122-fresh air valve. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] like Figure 1 As shown, a three-pipe constant temperature fresh air dehumidifier includes a first dehumidification device and a second dehumidification device; wherein the first dehumidification device is arranged outdoors, and the second dehumidification device is arranged indoors; the first dehumidification device and the second dehumidification device are connected;

[0025] The first dehumidification device includes an outdoor fin heat exchanger 100, a first DC fan 200, a four-way reversing valve 300, and a variable frequency compressor 400. The outdoor fin heat exchanger 100 is connected to the four-way reversing valve 300, which is in turn connected to the variable frequency compressor 400. The outdoor fin heat exchanger 100, the four-way reversing valve 300, and the variable frequency compressor 400 are each connected to the second dehumidification device via a pipeline. The first DC fan 200 is disposed below the outdoor fin heat exchanger 100.

[0026] The second dehumidification device includes an indoor fin heat exchanger 900, an indoor reheater 110, a fresh air inlet 115, an air supply outlet 112 and a second DC fan 111; the indoor fin heat exchanger 900 and the indoor reheater 110 are respectively connected to the outdoor fin heat exchanger 100, the four-way reversing valve 300 and the variable frequency compressor 400, the fresh air inlet 115 and the air supply outlet 112 are respectively arranged on the left and right sides of the second dehumidification device, and the second DC fan 111 is arranged between the indoor reheater 110 and the air supply outlet 112.

[0027] In the present invention, by installing a first dehumidification device outdoors, introducing fresh air through the fresh air inlet 115, and processing it through the indoor fin heat exchanger 900 and reheater, the indoor air comfort level can be improved and a constant temperature and humidity environment can be maintained. The indoor reheater 110 in the second dehumidification device can heat and regulate the air during the dehumidification process, ensuring a stable indoor temperature and preventing the indoor temperature from being too low due to dehumidification. Separating the dehumidification and air supply processes avoids the drawbacks of the integrated design of traditional equipment and allows for more flexible adjustment of air volume and dehumidification intensity.

[0028] Example 2

[0029] This embodiment is a further refinement of the first embodiment.

[0030] The outdoor fin heat exchanger 100 is also connected to one end of an electronic expansion valve A500, the other end of which is connected to a shutoff valve B700. Shutoff valve B700 is connected via a pipe to one end of a shutoff valve E118, the other end of which is connected to the indoor fin heat exchanger 900 and one end of an electronic expansion valve B113. The other end of the electronic expansion valve B113 is connected to the indoor reheat unit 110.

[0031] By connecting the outdoor fin heat exchanger 100 and the indoor reheater 110 in parallel, regulating the electronic expansion valves A500 and B113, and simultaneously opening the solenoid valve 114, the unit can operate at a constant temperature in dehumidification mode, ensuring a constant indoor air supply temperature.

[0032] The first dehumidification device further includes a stop valve A600 , one end of which is connected to the four-way reversing valve 300 , and the other end of which is connected to one end of a stop valve D117 via a pipe. The other end of the stop valve D117 is connected to the indoor fin heat exchanger 900 .

[0033] The first dehumidification device also includes a stop valve C800, one end of which is connected to the four-way reversing valve 300 and the variable frequency compressor 400 respectively, and the other end of the stop valve C800 is connected to the stop valve F119 through a pipeline. The stop valve F119 is connected to one end of the electronic expansion valve B113, and the other end of the electronic expansion valve B113 is connected to the indoor reheater 110.

[0034] The second dehumidifier is also provided with a return air vent 116, which is located on the same side as the fresh air vent 115 and below the fresh air vent 115. A filter assembly is also provided inside the return air vent 116 and the fresh air vent 115 to filter the air introduced from the return air vent 116 and the fresh air vent 115. The filter assembly includes a primary filter 120 and a high-efficiency filter 121.

[0035] Furthermore, a fresh air valve 122 is provided on the inner side of the fresh air inlet 115 , and the opening or closing of the fresh air inlet 115 is controlled by the fresh air valve 122 .

[0036] The working principle of this utility model is:

[0037] 1. Dehumidification Mode: The first dehumidifier operates in cooling mode. The second dehumidifier's four-way reversing valve 300 is de-energized, solenoid valve 114 is open, and electronic expansion valves A500 and B113 are regulated together. By adjusting the opening of electronic expansion valve B113, the flow of refrigerant entering the indoor reheater 110 is controlled to achieve temperature control. Controlling electronic expansion valve A500 controls the unit's dehumidification capacity.

[0038] When the dehumidification mode is running, when the fresh air valve 122 is opened, the outdoor fresh air and the indoor return air are sucked in by the second DC fan 111 from the fresh air inlet 115 and the return air inlet 116, and after being filtered by the primary filter 120 and the high-efficiency filter 121, they are condensed by the indoor fin heat exchanger 900, condensing the water vapor in the air into dry low-temperature air. After passing through the indoor reheater 110 and being reheated and temperature-controlled, the air is delivered into the room at a constant temperature.

[0039] 2. Heating operation mode: The first dehumidification device operates in the heating state, the four-way reversing valve 300 is energized, the solenoid valve 114 is closed, the electronic expansion valve B113 is fully closed, and the electronic expansion valve A500 is adjusted.

[0040] When operating in heating mode, when the fresh air valve 122 is opened, outdoor fresh air or fresh air and indoor return air are sucked into the second DC fan 111 from the fresh air inlet 115 and the return air inlet 116, filtered by the primary filter 120 and the high-efficiency filter 121, heated by the indoor fin heat exchanger 900, and then sent into the room after passing through the indoor reheater 110 (the indoor reheater 110 is not working at this time).

[0041] 3. Ventilation mode: In ventilation mode, the first dehumidification device does not operate, and the second dehumidification device (the second DC fan 111 and the fresh air valve 122) operates.

[0042] In dehumidification, heating, and ventilation modes, the amount of fresh air in the room is controlled by controlling the opening of fresh air valve 122 according to the indoor CO2 concentration. When fresh air valve 122 is fully closed, the second dehumidifier switches between internal circulation and fresh air modes. When fresh air valve 122 is closed, the system operates in internal circulation mode, while when fresh air valve 122 is open, the system operates in fresh air flow mode. Simultaneously, the primary filter 120 and the high-efficiency filter 121 purify the indoor air.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Finally, it should be noted that 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 three-pipe constant temperature fresh air dehumidifier, characterized by: The first dehumidifier comprises a first dehumidifier and a second dehumidifier; wherein the first dehumidifier is arranged outdoors and the second dehumidifier is arranged indoors; the first dehumidifier and the second dehumidifier are connected; The first dehumidification device comprises an outdoor fin heat exchanger (100), a first DC fan (200), a four-way reversing valve (300), and a variable frequency compressor (400); the outdoor fin heat exchanger (100) is connected to the four-way reversing valve (300), and the four-way reversing valve (300) is connected to the variable frequency compressor (400); the outdoor fin heat exchanger (100), the four-way reversing valve (300), and the variable frequency compressor (400) are respectively connected to the second dehumidification device through pipelines, and the first DC fan (200) is arranged below the outdoor fin heat exchanger (100); The second dehumidification device comprises an indoor fin heat exchanger (900), an indoor reheater (110), a fresh air inlet (115), an air supply outlet (112), and a second DC fan (111); the indoor fin heat exchanger (900) and the indoor reheater (110) are respectively connected to the outdoor fin heat exchanger (100), the four-way reversing valve (300), and the variable frequency compressor (400); the fresh air inlet (115) and the air supply outlet (112) are respectively arranged on the left and right sides of the second dehumidification device; and the second DC fan (111) is arranged between the indoor reheater (110) and the air supply outlet (112).

2. The three-pipe constant temperature fresh air dehumidifier according to claim 1, characterized in that: The outdoor fin heat exchanger (100) is also connected to one end of the electronic expansion valve A (500), and the other end of the electronic expansion valve A (500) is connected to the stop valve B (700).

3. The three-pipe constant temperature fresh air dehumidifier according to claim 2, characterized in that: The stop valve B (700) is connected to one end of the stop valve E (118) through a pipeline, and the other end of the stop valve E (118) is connected to one end of the indoor fin heat exchanger (900) and the electronic expansion valve B (113) respectively.

4. The three-pipe constant temperature fresh air dehumidifier according to claim 3, characterized in that: The other end of the electronic expansion valve B (113) is connected to the indoor reheater (110).

5. The three-pipe constant temperature fresh air dehumidifier according to claim 1, characterized in that: The first dehumidification device further includes a stop valve A (600), one end of which is connected to the four-way reversing valve (300), and the other end of which is connected to one end of the stop valve D (117) through a pipeline.

6. The three-pipe constant temperature fresh air dehumidifier according to claim 5, characterized in that: The other end of the stop valve D (117) is connected to the indoor fin heat exchanger (900).

7. The three-pipe constant temperature fresh air dehumidifier according to claim 6, characterized in that: The first dehumidification device further includes a stop valve C (800), one end of which is connected to the four-way reversing valve (300) and the variable frequency compressor (400), respectively, and the other end of which is connected to a stop valve F (119) through a pipeline. The stop valve F (119) is connected to one end of a solenoid valve (114), and the other end of the solenoid valve (114) is connected to the indoor reheater (110).

8. The three-pipe constant temperature fresh air dehumidifier according to claim 1, characterized in that: The second dehumidification device is also provided with a return air inlet (116), which is arranged on the same side as the fresh air inlet (115), and the return air inlet (116) is arranged below the fresh air inlet (115).

9. The three-pipe constant temperature fresh air dehumidifier according to claim 8, characterized in that: A filter assembly is also provided on the inner side of the return air inlet (116) and the fresh air inlet (115), and the filter assembly is used to filter the air introduced from the return air inlet (116) and the fresh air inlet (115).

10. The three-pipe constant temperature fresh air dehumidifier according to claim 9, characterized in that: The filter assembly includes a primary filter (120) and a high efficiency filter (121).

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