Double-cold-source fresh air dehumidifying and humidifying machine with variable outlet air temperature

Abstract

The utility model relates to a double-cold-source fresh air dehumidifying and humidifying machine with variable outlet air temperature, which belongs to the technical field of heating ventilation air conditioners and comprises a dehumidifying and humidifying machine shell. An ultraviolet lamp, a reflector, a filter screen, an air inlet temperature probe, a finned coil water surface cooler, a water cooling air outlet temperature probe, a fluorine evaporator, an evaporator rear temperature probe, a finned coil condenser, a wet film assembly, a water pan, an air supply temperature probe and an air feeder are sequentially arranged in the dehumidification and humidification machine shell from left to right. An indoor unit water connecting pipe enters from a cold and hot water inlet, one path enters through a fin coil pipe water surface cooling and then flows out through a water surface cooling return water adjusting valve, and the other path enters through a plate heat exchanger and then flows out through a plate heat exchange return water adjusting valve. According to the double-cold-source fresh air dehumidifying and humidifying machine with the variable outlet air temperature, the return air proportion in the air handling capacity is increased through the return air valve, the humidifying and dehumidifying capacity of equipment can be improved, and the double-cold-source fresh air dehumidifying and humidifying machine has the functions of heating, humidifying, temperature adjusting, dehumidifying and ventilating and is suitable for being used all the year round.

Description

Technical Field

[0001] The utility model relates to the technical field of heating, ventilation and air conditioning, in particular to a dual-cold-source fresh air dehumidifier with variable outlet air temperature. Background Art

[0002] Existing dual-cooling source fresh air dehumidifiers typically have a fixed water intake, cannot adjust the water flow rate to change the outlet air temperature, and lack internal humidification components. However, for dehumidification in basements and aboveground areas, the required outlet air temperature varies depending on the season. 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. Furthermore, basements and winter require both heating and humidification, and it would be desirable to integrate these functions into a single device. Furthermore, by appropriately raising the supply air temperature, the supply air duct can be made insulated, simplifying the installation process.

[0003] This application adopts parallel fin coil water meter cooling and plate heat exchanger to distribute condensation heat by distributing fluorine flow, changing the outlet air temperature during dehumidification, and achieving the purpose of dehumidification by changing the outlet air temperature; in addition, a built-in wet film humidification component increases the air temperature before the wet film, so that it can be cooled and humidified when passing through the wet film; a constant air volume fan is used to change the fresh air ratio by adjusting the fresh air and return air valves, fully ensuring the humidification effect in winter and the dehumidification effect in summer. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a dual-cold source fresh air dehumidifier with variable outlet air temperature, which has the advantages of heating, humidification, temperature control dehumidification and good ventilation functions, and solves the tricky problem of humidity control of dehumidifiers when used in basements, during the rainy season and the return of the south wind.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a dual-cold-source fresh air dehumidifier with variable outlet air temperature, comprising a dehumidifier housing, wherein the interior of the dehumidifier housing is provided with, from left to right, an ultraviolet lamp, a reflector, a filter, an inlet air temperature probe, a fin coil water meter cooling, a water-cooled outlet air temperature probe, a fluorine evaporator, a temperature probe after the evaporator, a fin coil condenser, a wet film assembly, a water receiving tray, a supply air temperature probe, and a blower;

[0006] The water pipes of the indoor unit enter from the hot and cold water inlets, one way enters through the finned coil water meter and then flows out through the water meter cold return water regulating valve, and the other way enters through the plate heat exchanger and then flows out through the plate heat exchanger return water regulating valve;

[0007] The fluorine refrigerant flows out of the compressor at high pressure and is divided into two paths. One path passes through the finned coil condenser, then through the condenser electronic expansion valve and the fluorine evaporator, and finally reaches the compressor inlet. The other path passes through the plate heat exchanger, then through the plate heat exchanger electronic expansion valve and the fluorine evaporator, and finally reaches the compressor inlet. The fluorine flow rates of the two paths are achieved by adjusting the opening of the condenser electronic expansion valve and the plate heat exchanger electronic expansion valve according to the outlet air temperature.

[0008] The inlet and outlet of the compressor are respectively provided with a low-pressure probe and a high-pressure probe. The humidification water enters from the humidification water inlet and is distributed to the wet membrane assembly through the humidification water inlet electric valve, and finally flows into the water receiving tray, and then is discharged into the drainage pipe by the drainage pump;

[0009] A drainage pump and a water level sensor are respectively provided at the bottom of the fin coil water meter cold and at the top of the water receiving tray. During dehumidification, condensed water flows from the fin coil water meter cold and the fluorine evaporator to the water receiving tray, and the humidification water enters from the humidification water inlet and is distributed to the wet membrane component through the humidification water inlet electric valve, and finally flows into the water receiving tray, and then is discharged from the dehumidification and humidification machine housing by the drainage pump.

[0010] Furthermore, the left side of the dehumidifier shell is provided with an outdoor fresh air inlet and an indoor return air inlet from top to bottom, and the interior of the dehumidifier shell is provided with a fresh air valve and a return air valve that are compatible with the outdoor fresh air inlet and the indoor return air inlet, and the fresh air valve and the return air valve are both adjustable in multiple positions.

[0011] Furthermore, the compressor is variable frequency.

[0012] Furthermore, the blower is controlled by constant air volume variable frequency, and an air outlet corresponding to the blower is provided on the right side of the dehumidifier housing.

[0013] Furthermore, the wet membrane module is of wet membrane type.

[0014] Furthermore, a water level sensor is provided inside the water receiving tray. The water level sensor is a switch type and is used to monitor the water level in the water receiving tray. When the water level is higher than a set value, the water level sensor alarm is triggered.

[0015] Furthermore, the water receiving tray is installed at the bottom of the fin coil water meter cooling, fluorine evaporator, fin coil condenser, wet membrane assembly, drainage pump and water level sensor.

[0016] Compared with the existing technology, the utility model provides a dual-cold source fresh air dehumidifier with variable outlet air temperature, which has the following beneficial effects:

[0017] 1. This dual-cold source fresh air dehumidifier with variable outlet air temperature increases the return air ratio in the air handling capacity through the return air valve, which can improve the humidification and dehumidification capacity of the equipment. It has the functions of heating, humidification, temperature control, dehumidification and ventilation. It is suitable for use all year round and is suitable for use in basements, rainy season and return of south wind.

[0018] 2. This dual-cold-source fresh air dehumidifier with variable outlet air temperature is equipped with a water-cooled outlet air temperature probe in front of the fluorine evaporator. The measured value is compared with the set value to adjust the compressor frequency to ensure sufficient dehumidification capacity; an air supply temperature probe is installed at the blower. The measured value is compared with the set value to adjust the electronic expansion valve and the condenser electronic expansion valve to ensure the outlet air temperature.

[0019] 3. This dual-cold source fresh air dehumidifier humidifier with variable outlet air temperature has a compressor that does not work during heating, and the fin coil water meter is cold and hot water is passed through it. The outlet air temperature is set to achieve a stable heating supply. The higher the temperature, the greater the heating supply. During humidification, the compressor does not work, and the fin coil water meter is cold and hot water is passed through it. The outlet air temperature is set to ensure the wet film inlet air temperature and achieve the humidification effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a schematic diagram of the structure of the fin coil water meter cooling, fluorine evaporator and fin coil condenser of the utility model.

[0022] In the figure: 1, return air inlet, 2, return air valve, 3, dehumidifier housing, 4, fresh air inlet, 5, fresh air valve, 6, UV lamp, 7, reflector, 8, filter, 9, inlet air temperature probe, 10, fin coil water meter cooling, 11, water-cooled outlet air temperature probe, 12, fluorine evaporator, 13, evaporator rear temperature probe, 14, fin coil condenser, 15, wet film assembly, 16, water tray, 17, supply air temperature probe, 18, supply Fan, 19. Air outlet, 20. Plate heat exchanger electronic expansion valve, 21. Plate heat exchanger, 22. Control panel, 23. High-pressure probe, 24. Compressor, 25. Humidifier water inlet, 26. Low-pressure probe, 27. Condenser electronic expansion valve, 28. Water level sensor, 29. Plate heat exchanger return water regulating valve, 30. Hot and cold water inlets, 31. Water meter cold return water regulating valve, 32. Drain pump, 33. Drain pipe, 34. Humidifier water inlet electric valve. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1:

[0025] See also Figures 1 to 2 In this embodiment, a dual-cold-source fresh air dehumidifier with variable outlet air temperature includes a dehumidifier housing 3. Inside the dehumidifier housing 3, there are arranged, from left to right, an ultraviolet lamp 6, a reflector 7, a filter 8, an inlet air temperature probe 9, a fin coil water meter cooling 10, a water-cooled outlet air temperature probe 11, a fluorine evaporator 12, a temperature probe after the evaporator 13, a fin coil condenser 14, a wet film assembly 15, a water receiving tray 16, a supply air temperature probe 17, and a blower 18.

[0026] The water pipes of the indoor unit enter from the hot and cold water inlet 30, one way enters through the finned coil water meter cold 10 and then flows out through the water meter cold return water regulating valve 31, and the other way enters through the plate heat exchanger 21 and then flows out through the plate heat exchanger return water regulating valve 29;

[0027] The fluorine refrigerant flows out of the compressor 24 at high pressure and is divided into two paths. One path passes through the finned coil condenser 14, then through the condenser electronic expansion valve 27 and the fluorine evaporator 12, and finally reaches the compressor 24 inlet. The other path passes through the plate heat exchanger 21, then through the plate heat exchanger electronic expansion valve 20 and the fluorine evaporator 12, and finally reaches the compressor 24 inlet. The fluorine flow rates of the two paths are achieved by adjusting the opening of the condenser electronic expansion valve 27 and the plate heat exchanger electronic expansion valve 20 according to the outlet air temperature.

[0028] The inlet and outlet of the compressor 24 are respectively provided with a low-pressure probe 26 and a high-pressure probe 23. The humidification water enters from the humidification water inlet 25 and is distributed to the wet membrane module 15 through the humidification water inlet electric valve 34, and finally flows into the water receiving tray 16, and then is discharged into the drainage pipe by the drainage pump 32;

[0029] A drainage pump 32 and a water level sensor 28 are respectively provided at the bottom of the fin coil water meter cooler 10 and at the top of the water receiving tray 16. During dehumidification, condensed water flows from the fin coil water meter cooler 10 and the fluorine evaporator 12 to the water receiving tray 16, and the humidification water enters from the humidification water inlet 25 and is then distributed to the wet membrane assembly 15 through the humidification water inlet electric valve 34, and finally flows into the water receiving tray 16, and then is discharged from the dehumidification and humidification machine housing 3 by the drainage pump 32.

[0030] In this embodiment, the return air ratio in the air processing capacity is increased by the return air valve 2, which can increase the humidification and dehumidification capacity of the equipment. It has the functions of heating, humidification, temperature control, dehumidification and ventilation, and is suitable for use throughout the year, suitable for use in basements, rainy season and the return of south wind. By arranging a water-cooled outlet air temperature probe 11 in front of the fluorine evaporator 12, the frequency of the compressor 24 is adjusted by comparing the measured value with the set value to ensure sufficient dehumidification capacity; by arranging a supply air temperature probe 17 at the blower 18, the measured value is compared with the set value to adjust the plate-changing electronic expansion valve 20 and the condenser electronic expansion valve 27 to ensure the outlet air temperature.

[0031] Specifically, the left side of the dehumidifier housing 3 is provided with an outdoor fresh air inlet 4 and an indoor return air inlet 1 from top to bottom, and the interior of the dehumidifier housing 3 is provided with a fresh air valve 5 and a return air valve 2 that are compatible with the outdoor fresh air inlet 4 and the indoor return air inlet 1. Both the fresh air valve 5 and the return air valve 2 are adjustable in multiple positions.

[0032] It should be noted that the compressor 24 is variable frequency; the blower 18 is variable frequency controlled with constant air volume, and an air outlet 19 corresponding to the blower 18 is provided on the right side of the dehumidifier housing 3; the wet film assembly 15 is of wet film type.

[0033] It should be noted that a control panel 22 for controlling the dual-cold-source fresh air dehumidifier is provided at the bottom of the dehumidifier housing 3 .

[0034] Example 2:

[0035] See also Figure 1 On the basis of the first embodiment, the present invention includes a water receiving tray 16 installed at the bottom of the fin coil water meter cooling 10, the fluorine evaporator 12, the fin coil condenser 14, the wet membrane assembly 15, the drain pump 32 and the water level sensor 28.

[0036] In this embodiment, a water level sensor 28 is provided inside the water receiving tray 16. The water level sensor 28 is a switch type and is used to monitor the water level height in the water receiving tray 16. When the water level is higher than the set value, the water level sensor 28 will trigger an alarm.

[0037] It should be noted that one end of the drainage pump 32 is fixedly connected to a drainage pipe 33 .

[0038] The working principle of the above embodiment is:

[0039] In ventilation mode:

[0040] The compressor 24 in the dehumidifier housing 3 does not work, and the water meter cold return water regulating valve 31 and the plate exchange return water regulating valve 29 are closed; the equipment starts the air supply fan 18, opens the return air valve 2 and the fresh air valve 5, and the outdoor fresh air passes through the outdoor fresh air inlet 4, and the indoor return air enters and mixes through the indoor return air inlet 1, and then passes through the ultraviolet lamp 6, reflector 7, filter 8, fin coil water meter cold 10, fluorine evaporator 12, fin coil condenser 14, wet membrane assembly 15, air supply fan 18, air outlet 19, etc. to be sent out of the equipment.

[0041] During operation, except for the blower 18, the return air valve 2 and the fresh air valve 5, all other control components are closed.

[0042] In heating mode:

[0043] The compressor 24 in the dehumidifier housing 3 does not work, and the plate return water regulating valve 29 is closed; the working state of the blower 18 is the same as the previous "ventilation mode", hot water enters from the hot and cold water inlet 30, heats the air through the fin coil water cooler 10, and then flows out of the equipment after passing through the water meter cold return water regulating valve 31. The opening of the water meter cold return water regulating valve 31 is determined by comparing the actual temperature measured by the supply air temperature probe 17 with the set temperature.

[0044] During operation, except for the blower 18, the return air valve 2, the fresh air valve 5, and the water meter cold return water regulating valve 31, all other control components are closed.

[0045] In humidification mode:

[0046] In the humidification mode, in the heating mode, the humidification water inlet electric valve 34 and the drainage pump 32 are opened according to the humidification demand, and the other controls are the same as those in the heating mode.

[0047] In dehumidification mode:

[0048] The dehumidification mode is divided into two situations: dehumidification with cold water supply and dehumidification without cold water supply.

[0049] During dehumidification when cold water is supplied, the openings of the condenser electronic expansion valve 27 and the plate-cooled electronic expansion valve 20 are adjusted simultaneously to determine the proportion of heat removed by the cold water and the outlet air temperature. Dehumidification modes are categorized as follows: the temperature at the device's air outlet is below, equal to, or above the room temperature; these are classified as cooling, balanced, and heating. The preferred mode can be determined based on the room temperature. To simplify installation, the device's air supply duct is not insulated. Therefore, in the cooling mode, the supply air temperature should be around 18°C.

[0050] For example: The set temperature for dehumidification with cooling is 18°C, the set temperature for dehumidification with balance is 24°C, and the set temperature for dehumidification with heating is 35°C.

[0051] In dehumidification mode with cold water supply, the blower 18 operates in the same manner as in ventilation mode, and the drain pump 32 remains on. When the water level sensor 28 sounds an alarm, dehumidification stops to prevent condensate leakage and losses. In dehumidification mode, the openings of the condenser electronic expansion valve 27 and the plate-type electronic expansion valve 20 are determined by comparing the actual temperature measured by the supply air temperature probe 17 with the set value. To increase the supply air temperature, the opening of the plate-type electronic expansion valve 20 must be reduced. This control system can be categorized into three types: cooling, balanced, and heating, depending on the set temperature.

[0052] Compressor 24 starts. A portion of the high-pressure gaseous refrigerant from the compressor 24 outlet flows to the finned coil condenser 14, passes through the condenser's electronic expansion valve 27, and then to the fluorine evaporator 12 before returning to compressor 24. The remaining portion flows to the fluorine side of the plate heat exchanger 21, then to the fluorine evaporator 12, and then back to compressor 24. These two portions are connected in parallel. Adjusting the openings of the two expansion valves can adjust the supply air temperature and the high-pressure pressure at the compressor 24 outlet. The operating status of compressor 24 can be assessed by the low-pressure probe 26 at the compressor 24 inlet and the high-pressure probe 23 at the compressor 24 outlet. The temperature measured by the post-evaporator temperature probe 13 is compared with the set temperature to adjust the operating frequency of compressor 24. Cold water enters the finned coil water cooler 10 through the hot and cold water inlets 30 and then flows out through the water meter cold return water regulating valve 31. The temperature measured by the water-cooled outlet temperature probe 11 is compared with the set temperature to determine the opening of the water meter cold return water regulating valve 31. Cold water enters the plate heat exchanger 21 from the hot and cold water inlets 30 and then flows out through the plate heat exchanger return water regulating valve 29. The opening of the plate heat exchanger return water regulating valve 29 is determined by comparing the opening of the plate heat exchanger electronic expansion valve 20 with the set value. This achieves the dehumidification function of changing the outlet air temperature.

[0053] In dehumidification mode without cold water supply, the blower 18 operates as in "ventilation mode," and the drain pump 32 remains on. When the water level sensor 28 sounds an alarm, dehumidification stops to prevent condensate leakage and losses. In this dehumidification mode, the plate-type electronic expansion valve 20, plate-type return water regulating valve 29, and water meter cold return water regulating valve 31 are closed. The temperature measured by the temperature probe 13 after the evaporator is compared with the set temperature, and the operating frequency of the compressor 24 is adjusted.

[0054] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods, and can be implemented as long as they can achieve their beneficial effects. In addition, the electrical components appearing in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Technicians in this field can control the electrical components through simple programming, and the existing disclosed power connection technology is also common knowledge in this field, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0055] 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.

[0056] 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 dual-cold-source fresh air dehumidifier with variable outlet air temperature, comprising a dehumidifier housing (3), characterized in that: The interior of the dehumidifier housing (3) is provided with an ultraviolet lamp (6), a reflector (7), a filter (8), an air inlet temperature probe (9), a finned coil water meter cooling (10), a water-cooled air outlet temperature probe (11), a fluorine evaporator (12), a temperature probe after the evaporator (13), a finned coil condenser (14), a wet film assembly (15), a water receiving tray (16), an air supply temperature probe (17) and an air blower (18) in sequence from left to right; The water pipe of the internal machine enters from the hot and cold water inlet (30), enters through the finned coil water meter cold (10) and then flows out through the water meter cold return water regulating valve (31), and enters through the plate heat exchanger (21) and then flows out through the plate heat exchanger return water regulating valve (29); The fluorine refrigerant flows out of the compressor (24) at high pressure and is divided into two paths. One path passes through the finned coil condenser (14), then passes through the condenser electronic expansion valve (27) and the fluorine evaporator (12), and then reaches the compressor (24) inlet. The other path passes through the plate heat exchanger (21), then passes through the plate heat exchanger electronic expansion valve (20) and the fluorine evaporator (12), and then reaches the compressor (24) inlet. The fluorine flow rates of the two paths are achieved by adjusting the openings of the condenser electronic expansion valve (27) and the plate heat exchanger electronic expansion valve (20) according to the outlet air temperature. The inlet and outlet of the compressor (24) are respectively provided with a low-pressure probe (26) and a high-pressure probe (23). Humidification water enters from the humidification water inlet (25) and is distributed to the wet membrane assembly (15) through the humidification water inlet electric valve (34), and finally flows into the water receiving tray (16), and then is discharged into the drainage pipe by the drainage pump (32); A drainage pump (32) and a water level sensor (28) are respectively provided at the bottom of the finned coil water meter cooler (10) and at the top of the water receiving tray (16). During dehumidification, condensed water flows from the finned coil water meter cooler (10) and the fluorine evaporator (12) to the water receiving tray (16), and humidification water enters from the humidification water inlet (25) and is then distributed to the wet membrane assembly (15) through the humidification water inlet electric valve (34), and finally flows into the water receiving tray (16), and then is discharged from the dehumidification and humidification machine housing (3) by the drainage pump (32).

2. A dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: The left side of the dehumidifier housing (3) is provided with an outdoor fresh air inlet (4) and an indoor return air inlet (1) in sequence from top to bottom, and the interior of the dehumidifier housing (3) is provided with a fresh air valve (5) and a return air valve (2) adapted to the outdoor fresh air inlet (4) and the indoor return air inlet (1), and both the fresh air valve (5) and the return air valve (2) are adjustable in multiple positions.

3. The dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: The compressor (24) is variable frequency.

4. The dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: The air blower (18) is frequency-controlled with constant air volume, and an air outlet (19) corresponding to the air blower (18) is provided on the right side of the dehumidifier housing (3).

5. The dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: The wet membrane assembly (15) is of wet membrane type.

6. The dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: A water level sensor (28) is provided inside the water receiving tray (16). The water level sensor (28) is a switch type and is used to monitor the water level in the water receiving tray (16). When the water level is higher than a set value, the water level sensor (28) will be triggered to alarm.

7. The dual-cold-source fresh air dehumidifier with variable outlet air temperature according to claim 1, characterized in that: The water receiving tray (16) is installed at the bottom of the fin coil water meter cooler (10), the fluorine evaporator (12), the fin coil condenser (14), the wet membrane assembly (15), the drainage pump (32) and the water level sensor (28).

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