Temperature adjusting type fresh air dehumidifying and humidifying machine with outdoor unit

Abstract

The utility model relates to a temperature adjusting type fresh air dehumidifying and humidifying machine with an outdoor unit, which belongs to the technical field of heating ventilation air conditioners and comprises an indoor unit shell, an outdoor unit shell and a connecting pipeline, and the indoor unit shell is connected with the outdoor unit shell through the connecting pipeline. The temperature adjusting type fresh air dehumidification and humidification machine with the outdoor unit has the functions of temperature adjusting, dehumidification, heating, humidification and ventilation, can be used in the whole year including the plum rain season and the south day, is suitable for being used on the ground and a basement and is more suitable for being used in a temperature and humidity independent control system, and an air outlet temperature probe is arranged in front of the inner coil pipe. The frequency of the compressor is adjusted by comparing a measured value with a set value, sufficient dehumidification capacity is guaranteed, a reheating temperature probe is arranged in front of an outer coil pipe, and an electronic expansion valve is adjusted by comparing the measured value with the set value to guarantee air outlet temperature. During heating, the stable heat supply amount is achieved by setting the air outlet temperature, and the higher the temperature is, the larger the heat supply amount is. During humidification, the air inlet temperature of the wet film is guaranteed by setting the air outlet temperature, and the humidification function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, ventilation and air conditioning, in particular to a temperature-adjustable fresh air dehumidifying and humidifying machine with an outdoor unit. Background Art

[0002] A fresh air dehumidifier, also known as a fresh air dehumidifier, is a device that combines dehumidification, dehumidification, and fresh air ventilation into one device. Its dehumidification and heating principles are based on the refrigerant cycle. The evaporator absorbs heat from the passing air to cool and dehumidify the air, while the condenser receives heat from the passing air to heat the air. A four-way reversing valve can be used to switch between the evaporator and condenser, achieving dual cooling and heating functions. Moisture in the air passing through the evaporator condenses on the evaporator and is then discharged through the drainage system. The main working components are a compressor, refrigerant, expansion valve, four-way reversing valve, and fan. Humidification involves adding a wet film assembly to the heating system. Passing hot air vaporizes the liquid water on the wet film, increasing the moisture content in the air.

[0003] There are two main types of existing fresh air dehumidifiers. One type has the compressor installed in the outdoor unit, and the outlet air temperature of the indoor unit after dehumidification is fixed; the other type has the compressor installed in the indoor unit, which requires cold water to maintain the outlet air temperature after dehumidification. However, when used in basements and above ground, the outlet air temperature required in different seasons is different. For example, in summer, the outlet air temperature needs to be lower than the indoor temperature, while in basements, during the rainy season, and during the return of the south wind, the outlet air temperature needs to be higher than the indoor temperature. This is a temperature-controlled fresh air dehumidifier. In addition, heating and humidification are required in basements and during winter, and heating and humidification need to be integrated into the fresh air dehumidifier. Therefore, a temperature-controlled fresh air dehumidifier with an outdoor unit is proposed to solve the above technical problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a temperature-controlled fresh air dehumidifier with an outdoor unit, which has the advantages of easy installation and good use effect. It solves the problems of fresh air, humidification and dehumidification. It can be used throughout the year, including the rainy season and the return of the south wind. It is suitable for use on the ground and in the basement, solving the thorny problem of humidity control throughout the year.

[0005] To achieve the above object, the present invention provides the following technical solution: a temperature-controlled fresh air dehumidifier with an outdoor unit, comprising an indoor casing, an outdoor casing and a connecting pipe, wherein the indoor casing is connected to the outdoor casing via the connecting pipe;

[0006] The interior of the indoor casing is composed of an air regulating assembly, a filter assembly, a refrigerant assembly, a humidifying assembly and a fan assembly. The air regulating assembly is located on the left side of the indoor casing, the filter assembly is located on the right side of the air regulating assembly, the fan assembly is located on the right side of the indoor casing, the humidifying assembly is on the left side of the fan assembly, and the refrigerant assembly is located in the indoor casing and the outdoor casing respectively, with the indoor part between the filter assembly and the humidifying assembly, and the indoor and outdoor parts of the refrigerant assembly are connected by an intermediate pipe;

[0007] The interior of the outdoor housing is composed of an external unit structure and an external unit pipeline, and the external unit structure is connected to the external unit pipeline;

[0008] The connecting pipe is composed of an intermediate pipe C, an intermediate pipe B and an intermediate pipe A. Both ends of the connecting pipe are connected to the outdoor casing and the indoor casing respectively.

[0009] Furthermore, the air conditioning component includes an outdoor fresh air inlet, an indoor return air inlet, a fresh air valve and a return air valve; the filter component includes a filter; the indoor part of the refrigerant component consists of an inlet air temperature probe, an inner coil, an outlet air temperature probe, an outer coil, a water receiving tray, an inner unit pipe A / B / C, an inner coil side temperature probe, an electronic expansion valve A / B, a drain interface, a drain pump, a water level sensor, a reheat temperature probe, and a supply air temperature probe; the outdoor part of the refrigerant component contains all components installed in the outdoor casing; the humidification component includes a wet membrane component, a water distribution pipe, a humidification water interface, and a humidification water switch valve; the fan component includes an indoor unit fan and an air supply outlet.

[0010] Furthermore, the outdoor part of the refrigerant assembly includes a gas-liquid separator, an inlet pressure sensor, an outlet pressure sensor, a one-way valve, a four-way reversing valve, an outdoor unit fan; an outdoor unit coil, an electronic expansion valve C; a stop valve A\B\C, an outdoor unit connecting pipe A\B\C, a third pipe and a compressor.

[0011] It should be added that the four-way reversing valve is provided with four interfaces A, B, C, and D.

[0012] Among them, the outdoor unit pipeline includes outdoor unit pipe A, outdoor unit pipe B, outdoor unit pipe C and corresponding stop valve A, stop valve B, stop valve C. The outdoor unit pipe A is connected to the stop valve A and the D port of the four-way reversing valve in sequence; the outdoor unit pipe B is connected to the stop valve B, the outdoor unit coil, and the B port of the four-way reversing valve in sequence, the outdoor unit pipe C is connected to the stop valve C in sequence, and the C port of the four-way reversing valve is connected to the inlet pressure sensor, the gas-liquid separator, the outlet pressure sensor, the one-way valve, and the A port of the four-way reversing valve in sequence.

[0013] Furthermore, the indoor unit fan is controlled by constant air volume, and the wet film component is a wet film type.

[0014] Furthermore, the water level sensor is of switch type and is triggered when the water level is higher than a set value.

[0015] Furthermore, the water receiving tray is installed below the inner coil, the outer coil, the wet membrane assembly, the drainage pump, and the water level sensor.

[0016] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0017] This temperature-controlled fresh air dehumidifier with an outdoor unit offers temperature-controlled dehumidification, heating, humidification, and ventilation functions. It can operate year-round, including during the rainy season and the return of southerly winds, and is suitable for both above-ground and basement use. Adjusting the opening of the fresh air and return air valves changes the proportion of return air in the treated air, increasing both humidification and dehumidification capacity. Its heating, humidification, temperature-controlled dehumidification, and ventilation functions accommodate year-round use and are also suitable for use in independent temperature and humidity control systems. An outlet air temperature probe is located before the inner coil. The measured value is compared with the set value to adjust the compressor frequency to ensure adequate dehumidification capacity. A reheat temperature probe is located before the outer coil. The measured value is compared with the set value to adjust the electronic expansion valve to maintain the outlet air temperature. During heating, the outlet air temperature is set to maintain a stable heating supply; a higher temperature increases the heating supply. During humidification, the outlet air temperature is set to maintain the wet film inlet temperature, achieving the humidification function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the utility model.

[0019] In the figure: 1. Indoor housing; 11. Outdoor fresh air inlet; 12. Fresh air valve; 13. Indoor return air inlet; 14. Return air valve; 15. Filter; 16. Inlet air temperature probe; 17. Inner coil temperature probe; 18. Inner coil; 19. Outlet air temperature probe; 20. Outer coil; 21. Wet film assembly; 22. Water distribution pipe; 23. Water tray; 24. Indoor unit fan; 25. Supply air outlet; 26. Indoor unit connection A; 27. Inner coil valve side temperature probe; 28. Electronic expansion valve A; 29. Indoor unit connection B; 30. Electronic expansion valve B; 31. Indoor unit connection C; 32. Humidification water interface; 33. Humidification water on / off valve; 34. Exhaust Water inlet; 35. Drain pump; 36. Water level sensor; 37. Reheat temperature probe; 38. Supply air temperature probe; 2. Outdoor unit casing; 51. Gas-liquid separator; 52. Inlet pressure sensor; 53. Outlet pressure sensor; 54. One-way valve; 55. Four-way reversing valve; 56. Outdoor unit fan; 57. Outdoor unit coil; 58. Electronic expansion valve C; 59. Stop valve A; 60. Outdoor unit connection pipe A; 61. Stop valve B; 62. Stop valve C; 63. Outdoor unit connection pipe B; 64. Outdoor unit connection pipe C; 65. Third pipe; 66. Compressor; 3. Connecting pipes; 101. Intermediate pipe C; 102. Intermediate pipe B; 103. Intermediate pipe A. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 In this embodiment, a temperature-controlled fresh air dehumidifier with an outdoor unit includes an indoor casing 1, an outdoor casing 2 and a connecting pipe 3. The indoor casing 1 is connected to the outdoor casing 2 through the connecting pipe 3.

[0022] See also Figure 1 The interior of the indoor casing 1 is composed of an air conditioning assembly, a filter assembly, an indoor part of the refrigerant assembly, a humidification assembly, and a fan assembly. The air conditioning assembly is located on the left side of the indoor casing 1, the filter assembly is located on the right side of the air conditioning assembly, the fan assembly is located on the right side of the indoor casing 1, the humidification assembly is located on the left side of the fan assembly, and the indoor part of the refrigerant assembly is located between the filter assembly and the humidification assembly. The outdoor fresh air inlet 11 and the indoor return air inlet 13 are arranged on the left side of the indoor casing 1 in sequence. The indoor casing 1 is provided with a fresh air valve 12 and a return air valve 14. To the right are provided with a filter 15, an inlet air temperature probe 16, an inner coil 18, an outlet air temperature probe 19, an outer coil 20, a reheat temperature probe 37, a wet film assembly 21, a supply air temperature probe 38, and an indoor fan 24. The indoor fan 24 corresponds to the supply air outlet 25 on the outside of the casing.

[0023] Part of the indoor unit pipe B29 connects sequentially to the electronic expansion valve A28, the internal coil valve-side temperature probe 27, the internal coil 18, the internal coil temperature probe 17, and finally to the indoor unit pipe A26. The other part of the indoor unit pipe B29 connects sequentially to the electronic expansion valve B30, the external coil 20, and finally to the indoor unit pipe C31.

[0024] The humidification water flows from the humidification water interface 32, through the humidification water on / off valve 33, and through the water distribution pipe 22, to the wet membrane module 21. The water eventually flows into the water receiving tray 23 and is discharged by the drain pump 35 to the drain interface 34. A water level sensor 36 is installed on the water receiving tray 23 to monitor the water level in the tray.

[0025] In this embodiment, the interior of the outdoor casing 2 is composed of an external unit structure and an external unit pipeline, and the external unit structure is connected to the external unit pipeline. The outdoor casing 2 includes a gas-liquid separator 51, a one-way valve 54, a four-way reversing valve 55, an outdoor unit fan 56, an outdoor unit coil 57, an electronic expansion valve C58, an inlet pressure sensor 52, an outlet pressure sensor 53, a third pipe 65, and a compressor 66.

[0026] The outdoor housing 2 has outdoor pipes A60, B63, and C64, along with corresponding stop valves A59, B61, and C62. Outdoor pipe A60 is sequentially connected to stop valve A59 and port D of four-way reversing valve 55. Outdoor pipe B63 is sequentially connected to stop valve B61, outdoor coil 57, and port B of four-way reversing valve 55. Outdoor pipe C64 is sequentially connected to stop valve C62 and third pipe 65. Port C of four-way reversing valve 55 is sequentially connected to inlet pressure sensor 52, gas-liquid separator 51, outlet pressure sensor 53, check valve 54, and port A of four-way reversing valve 55. Compressor 66 is sequentially connected to gas-liquid separator 51 and outlet pressure sensor 53.

[0027] In this embodiment, the connecting pipe 3 is composed of an intermediate pipe C101, an intermediate pipe B102 and an intermediate pipe A103. The two ends of the connecting pipe 3 are respectively connected to the indoor casing 1 and the outdoor casing 2. The two sides of the intermediate pipe A103, the intermediate pipe B102 and the intermediate pipe C101 are respectively connected to the indoor unit pipe A26, the indoor unit pipe B29, the indoor unit pipe C31 and the outdoor unit pipe A60, the outdoor unit pipe B63, and the outdoor unit pipe C64.

[0028] It should be noted that the indoor housing 1 and its internal components are installed in a ceiling-mounted manner, with the water tray 23 in a horizontal state. The outdoor housing 2 and its internal components are installed in a vertical manner, with the compressor standing upright.

[0029] It should be added that the fresh air valve 12 and the indoor return air inlet 13 are adjustable in multiple positions, the indoor unit fan 24 is controlled by constant air volume, and the outdoor unit fan 56 is controlled by variable speed.

[0030] The working principle of the above embodiment is:

[0031] In ventilation mode:

[0032] The compressor in the outdoor casing 2 and the outdoor fan 56 do not operate.

[0033] The device starts the indoor fan 24, opens the indoor return air inlet 13, and opens the fresh air damper 12. Outdoor fresh air enters through the outdoor fresh air inlet 11, and indoor return air enters through the indoor return air inlet 13. These air mixes and then passes through the filter 15, inner coil 18, outer coil 20, wet-film module 21, indoor fan 24, and air outlet 25, exiting the device. During operation, all components except the indoor fan, return air damper 14, and fresh air damper 12 are closed.

[0034] In heating mode:

[0035] At this time, the electronic expansion valve B30 is closed, the electronic expansion valve A28 is fully open, and no refrigerant flows in the third pipe 65 .

[0036] The indoor unit's air supply mode operates in the same manner as described in the "Ventilation Mode" section. Compressor 66 is activated, and high-pressure gaseous refrigerant flows from port A of four-way reversing valve 55 to port D. It then flows to outdoor unit pipe A60, intermediate pipe A103, and indoor unit pipe A26, entering indoor coil 18, where it condenses and releases heat, heating the air flowing through the coil. The refrigerant then passes through the fully-open electronic expansion valve A28, returns to outdoor unit pipe B29 and intermediate pipe B102, and then passes through electronic expansion valve C58 and enters outdoor unit coil 57, where it evaporates into low-pressure gas. The gas then enters port B of four-way reversing valve 55, flows to port C, and then enters gas-liquid separator 51 and the compressor, completing the heating cycle. At this point, the two connections of four-way reversing valve 55 are AD and BC. The outlet air temperature probe 19 detects and compares it with the set temperature, adjusting the operating frequency of compressor 66. The opening of electronic expansion valve C58 is determined by inlet pressure sensor 52 and outlet pressure sensor 53.

[0037] In humidification mode:

[0038] In the humidification mode, in the heating mode, the humidification water switch valve 33 and the drainage pump 35 are opened according to the humidification demand, and the other controls are the same as those in the heating mode.

[0039] In dehumidification mode:

[0040] Dehumidification modes are categorized as follows: the temperature at the device's air outlet is lower than, equal to, or higher than the room temperature, and are divided into cooling, balanced, and heating modes. The optimal mode can be determined based on the room temperature. To simplify installation, the device's air supply ducting is not insulated. Therefore, in the cooling mode, the supply air temperature should be around 18°C. For example, the set temperature for cooling dehumidification is 18°C, for balanced dehumidification it is 24°C, and for heating dehumidification it is 35°C.

[0041] In dehumidification mode, the indoor unit fan 24 operates as in ventilation mode, and the drain pump 35 remains on. When the water level sensor 36 sounds an alarm, dehumidification stops to prevent condensate leakage and losses. In dehumidification mode, the electronic expansion valve C58 is fully open. The electronic expansion valve A28 determines its opening based on the values of the internal coil valve-side temperature probe 27 and the internal coil temperature probe 17. The opening of the electronic expansion valve B30 is determined by comparing the measured value of the reheat temperature probe 37 with the set value. This control mode can be categorized as cooling, balanced, or heating, depending on the set temperature.

[0042] Compressor 66 starts. A portion of the high-pressure gaseous refrigerant flows from port A of four-way reversing valve 55 to port B. It then dissipates heat and condenses into a liquid at the outdoor unit coil 57, passing through the fully-open electronic expansion valve C58. The remaining portion flows from the compressor outlet to the third pipe 65, then through the outdoor unit pipe C64, intermediate pipe C101, to the indoor unit pipe C31. It then flows through the outdoor coil 20 and electronic expansion valve B30, condensing into a liquid and merging with the remaining portion. After merging, the liquid refrigerant enters electronic expansion valve A28 and indoor coil 18, where it absorbs heat and evaporates into a gas. The refrigerant then flows to indoor pipe A26, intermediate pipe A103, outdoor pipe A60, port D of four-way reversing valve 55, and port C. It then flows to the gas-liquid separator 51 and the compressor 65 inlet, completing the entire refrigeration cycle. At this point, the two connections of the four-way reversing valve 55 are AB and DC. The outlet air temperature probe 19 is detected and compared with the set temperature to change the operating frequency of the compressor.

[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 the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled fresh air dehumidifier with an outdoor unit, comprising an indoor housing (1), an outdoor housing (2) and a connecting pipe (3), characterized in that: The indoor casing (1) is connected to the outdoor casing (2) via a connecting pipe (3); The interior of the indoor casing (1) is composed of an air regulating assembly, a filter assembly, an indoor portion of a refrigerant assembly, a humidifying assembly, and a fan assembly, wherein the air regulating assembly is located on the left side of the indoor casing (1), the filter assembly is located on the right side of the air regulating assembly, the fan assembly is located on the right side of the indoor casing (1), the humidifying assembly is located on the left side of the fan assembly, and the indoor portion of the refrigerant assembly is located between the filter assembly and the humidifying assembly; The interior of the outdoor housing (2) is the outdoor part of the refrigerant assembly, which is composed of an outdoor unit structure and an outdoor unit pipeline, and the outdoor unit structure is connected to the outdoor unit pipeline; The connecting pipe (3) is composed of an intermediate pipe C (101), an intermediate pipe B (102) and an intermediate pipe A (103), and the two ends of the connecting pipe (3) are respectively connected to the indoor casing (1) and the outdoor casing (2).

2. A temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 1, characterized in that: The air conditioning component comprises an outdoor fresh air inlet (11), an indoor return air inlet (13), a fresh air valve (12) and a return air valve (14); the filter component comprises a filter screen (15); the humidification component comprises a wet membrane component (21), a water distribution pipe (22), a humidification water interface (32), and a humidification water switch valve (33); and the fan component comprises an indoor fan (24) and an air supply outlet (25).

3. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 1, characterized in that: The refrigerant assembly comprises an indoor part and an outdoor part, wherein the indoor part comprises an inlet air temperature probe (19), an inner coil (18), an outlet air temperature probe (38), an outer coil (20), a water receiving tray (23), an inner unit pipe A (26), an inner unit pipe B (29), an inner unit pipe C (31), an inner coil side temperature probe (27), an electronic expansion valve A (28), an electronic expansion valve B (30), a drainage interface (34), a drainage pump (35), a water level sensor (36), a reheat temperature probe (37), and an air supply temperature probe (38).

4. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 2, characterized in that: The outdoor part of the refrigerant assembly includes a gas-liquid separator (51), an inlet pressure sensor (52), an outlet pressure sensor (53), a one-way valve (54), a four-way reversing valve (55), an outdoor unit fan (56); an outdoor unit coil (57), an electronic expansion valve C (58); a stop valve A (59), a stop valve B (61), a stop valve C (62), an outdoor unit pipe A (60), an outdoor unit pipe B (63), an outdoor unit pipe C (64), a third pipe (65) and a compressor (66).

5. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 4, characterized in that: The outdoor unit pipeline comprises an outdoor unit pipe A (60), an outdoor unit pipe B (63), an outdoor unit pipe C (64) and corresponding stop valves A (59), stop valve B (61), and stop valve C (62). The outdoor unit pipe A (60) is sequentially connected to the stop valve A (59) and the D port of the four-way reversing valve (55); the outdoor unit pipe B (63) is sequentially connected to the stop valve B (61), the outdoor unit coil (57), and the B port of the four-way reversing valve (55); the outdoor unit pipe C (64) is sequentially connected to the stop valve C (62); and the C port of the four-way reversing valve (55) is sequentially connected to the inlet pressure sensor (52), the gas-liquid separator (51), the outlet pressure sensor (53), the one-way valve (54), and the A port of the four-way reversing valve (55).

6. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 4, characterized in that: The indoor unit fan (24) is controlled by constant air volume, the wet film assembly (21) is of wet film type, and the outdoor unit fan (56) is of variable speed.

7. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 3, characterized in that: The water level sensor (36) is of switch type and is triggered when the water level is higher than a set value.

8. The temperature-controlled fresh air dehumidifier and humidifier with an outdoor unit according to claim 3, characterized in that: The water receiving tray (23) is installed below the inner coil (18), the outer coil (20), the wet membrane assembly (21), the drainage pump (35), and the water level sensor (36).

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