Marine dehumidifier with improved energy efficiency

Abstract

The utility model provides a marine dehumidifier with improved energy efficiency, which is characterized in that an evaporator inputs high-temperature gas, a condenser inputs condensed fresh air, the condenser exchanges heat with the evaporator, the output end of the evaporator is communicated with the inlet of a rotating wheel adsorption area through a pipeline, and the outlet of the rotating wheel adsorption area is communicated with the input end of an adsorption fan through a pipeline; a gas output end of the condenser is respectively communicated with input ends of a regeneration heater and a condensation fan through pipelines, an output end of the regeneration heater is communicated with an inlet of a runner regeneration area through a pipeline, the regeneration heater is controlled by a relay, and an outlet of the runner regeneration area is communicated with an input end of a regeneration fan through a pipeline. The rotating speed of the regeneration fan is controlled by a frequency converter; the marine dehumidifier is improved on the basis of an existing dehumidifier technology, heat emitted by the condenser in the dehumidifier is used for heating regeneration of the rotating wheel, energy consumption of operation of the dehumidifier is reduced, and regeneration energy consumption of the marine dehumidifier is remarkably reduced on the basis that the original dehumidification effect of the dehumidifier is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of marine auxiliary equipment, in particular to a marine dehumidifier with improved energy efficiency. Background Art

[0002] There are many types of marine equipment, and some of them consume a large amount of energy. When used on a ship, they will consume a large amount of electric energy. The electric energy on the ship is generated by burning fuel through marine auxiliary engines. Reducing the energy consumption of the ship can not only reduce the fuel consumption and the operation cost of the ship, but also reduce the emissions of harmful gases. Therefore, on the basis of meeting the use requirements, reducing the energy consumption of marine equipment is crucial for the energy conservation and emission reduction of ships.

[0003] The existing marine dehumidifier includes three fans, an electric heater, a refrigeration compressor and a runner drive motor. The installed power of the equipment is relatively large, and the energy consumption is large during operation. It is necessary to consider improving the process route to reduce the operation energy consumption of the equipment. Summary of the Invention

[0004] The purpose of the utility model is to provide a marine dehumidifier with improved energy efficiency.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A marine dehumidifier with improved energy efficiency, characterized by comprising an evaporator, a runner, an adsorption fan, a condenser, a regeneration heater, a regeneration fan and a condensation fan. The evaporator inputs high-temperature gas, and the condenser inputs condensed fresh air. The condenser exchanges heat with the evaporator. The output end of the evaporator is communicated with the inlet of the adsorption area of the runner through a pipeline. The outlet of the adsorption area of the runner is communicated with the input end of the adsorption fan through a pipeline. The gas output end of the condenser is respectively communicated with the input ends of the regeneration heater and the condensation fan through pipelines. The output end of the regeneration heater is communicated with the inlet of the regeneration area of the runner through a pipeline. The regeneration heater is controlled by a relay, and a temperature sensor is arranged at the output end of the regeneration heater. The temperature sensor is electrically connected with the relay. The outlet of the regeneration area of the runner is communicated with the input end of the regeneration fan through a pipeline. The rotation speed of the regeneration fan is controlled by a frequency converter. A sixth temperature and humidity sensor is arranged at the output end of the condenser, and the sixth temperature and humidity sensor is electrically connected with the frequency converter.

[0007] Further, a second filter, a second manual valve and a fifth temperature and humidity sensor are sequentially arranged on the pipeline at the input end of the condenser.

[0008] Further, a first filter, a first manual valve, a first temperature and humidity sensor and a first dew point temperature sensor are sequentially arranged on the pipeline at the input end of the evaporator, and a second temperature and humidity sensor is arranged on the pipeline at the output end of the evaporator.

[0009] Further, a third manual valve and a flow sensor are successively arranged on the pipeline at the output end of the regeneration fan.

[0010] Further, a third temperature and humidity sensor is arranged on the pipeline at the outlet of the runner adsorption area, and a seventh temperature and humidity sensor is arranged on the pipeline at the outlet of the runner regeneration area.

[0011] Further, a fourth temperature and humidity sensor and a second dew point temperature sensor are successively arranged on the pipeline at the output end of the adsorption fan.

[0012] Further, a compressor is arranged on the cooling pipeline between the condenser and the evaporator, and an expansion valve is arranged on the heating pipeline between the evaporator and the condenser.

[0013] Further, a first pressure sensor and a second pressure sensor are respectively arranged at both ends of the compressor.

[0014] The utility model is improved on the basis of the existing dehumidifier process. The heat dissipated by the condenser in the dehumidifier is used for the heating regeneration of the runner, reducing the energy consumption of the dehumidifier during operation. On the basis of maintaining the original dehumidification effect of the dehumidifier, the regeneration energy consumption of the marine dehumidifier is significantly reduced. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the system structure of the dehumidifier of the utility model;

[0016] Figure 2 It is a front external view of the dehumidifier of the utility model;

[0017] Figure 3 It is a left external view of the dehumidifier of the utility model;

[0018] Figure 4 It is a right external view of the dehumidifier of the utility model;

[0019] Figure 5 It is a top external view of the dehumidifier of the utility model;

[0020] Figure 6 It is a front cross-sectional view of the dehumidifier of the utility model;

[0021] Figure 7 It is a left cross-sectional view of the dehumidifier of the utility model;

[0022] Figure 8 It is a right cross-sectional view of the dehumidifier of the utility model;

[0023] Figure 9 It is a top cross-sectional view of the dehumidifier of the utility model.

[0024] Reference Signs:

[0025] 1 First filter, 2 First manual valve, 3 First temperature and humidity sensor, 4 First dew point temperature sensor,

[0026] 5 Evaporator, 6 Second temperature and humidity sensor, 7 Rotor, 8 Third temperature and humidity sensor, 9 Adsorption fan,

[0027] 10 Fourth temperature and humidity sensor, 11 Second dew point temperature sensor, 12 Expansion valve, 13 First pressure sensor,

[0028] 14 Compressor, 15 Second pressure sensor, 16 Second filter, 17 Second manual valve,

[0029] 18 Fifth temperature and humidity sensor, 19 Condenser, 20 Sixth temperature and humidity sensor, 21 Regeneration heater,

[0030] 22 Temperature sensor, 23 Seventh temperature and humidity sensor, 24 Regeneration fan, 25 Third manual valve,

[0031] 26 Flow sensor, 27 Condensation fan. Detailed implementation mode

[0032] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0033] The present invention discloses a marine dehumidifier for improving energy efficiency, which adopts cooling dehumidification and rotor physical adsorption dehumidification. As Figure 1 shown, open the first manual valve 2 and the second manual valve 17. The high-humidity gas first passes through the fins of the evaporator 5 to cool down, so that the relative humidity of the gas reaches 100%, and water droplets are condensed. The granular water droplets are intercepted by the baffle of the evaporator 5, and the high-humidity gas becomes medium-humidity gas, achieving the purpose of primary dehumidification; then the medium-humidity gas contacts the honeycomb-shaped rotor 7, and the water in the medium-humidity gas is physically adsorbed, and the medium-humidity gas becomes low-humidity gas, achieving the purpose of secondary dehumidification, and the low-humidity gas meets the technical requirements of the marine dehumidifier.

[0034] After the high-humidity gas is dust-removed by the first filter 1, the temperature, humidity and dew point temperature of the high-humidity gas are detected by the first temperature and humidity sensor 3 and the first dew point temperature sensor 4. Then the gas passes through the evaporator 5, and the gas exchanges heat on the fins of the evaporator 5 to cool down, and the relative humidity reaches 100% and granular water droplets are condensed. The granular water droplets are intercepted when passing through the baffle of the evaporator 5 to prevent the granular water droplets from directly contacting the downstream rotor 7.

[0035] After the medium-humidity gas cooled and dehumidified by the evaporator 5 is detected for temperature and humidity by the second temperature and humidity sensor 6, it undergoes physical adsorption dehumidification through the honeycomb structure of the rotary wheel 7. The moisture in the gas is adsorbed and retained by the rotary wheel 7, enabling the absolute humidity of the gas to reach the required parameters. The low-humidity gas is sent into the cabin through the adsorption fan 9 after being detected for temperature, humidity, and dew point temperature by the third temperature and humidity sensor 8, the fourth temperature and humidity sensor 10, and the second dew point temperature sensor 11.

[0036] The rotary wheel 7 is divided into two regions, an adsorption region and a regeneration region. The adsorption region adsorbs the moisture in the gas. After adsorbing moisture, the rotary wheel slowly rotates into the regeneration region, where the adsorbed moisture is removed by heating, and then it enters the adsorption region again. Through the cooling of the medium-humidity gas, it regains the ability to adsorb moisture and then continues to absorb the moisture in the medium-humidity gas.

[0037] The cold source of the evaporator 5 comes from the expansion and heat absorption of the refrigerant. The refrigerant is compressed by the compressor 14 and then expands and absorbs heat in the evaporator 5 through the expansion valve 12. The refrigerant takes away the heat of the high-humidity gas, cooling the high-humidity gas. The relative humidity of the high-humidity gas reaches 100%, moisture is precipitated, and the absolute humidity of the high-humidity gas decreases, completing the primary dehumidification.

[0038] The refrigerant takes away the heat in the high-humidity gas, expands in volume, changes from liquid to gas, and is compressed into liquid by the compressor 14. The temperature of the refrigerant is relatively high and needs to be cooled by the condenser 19 before it can enter the evaporator 5 to absorb heat again. The heat dissipation of the condenser 19 is achieved by the condensed fresh air inhaled by the condenser fan 27.

[0039] A first pressure sensor 13 and a second pressure sensor 15 are respectively provided at both ends of the compressor 14, and the temperature change of the gas can be obtained by detecting the air pressure change.

[0040] The condenser fan 27 inhales the normal-temperature condensed fresh air filtered and dust-removed by the second filter 16. The output end of the second filter 16 is detected for temperature and humidity of the condensed fresh air by the fifth temperature and humidity sensor 18. The condensed fresh air exchanges heat through the fins of the condenser 19, taking away the heat of the refrigerant and cooling the refrigerant. At the same time, the temperature of the condensed fresh air rises. In the old process route of the dehumidifier, this part of the heat was directly discharged to the atmosphere without being utilized. After the improvement of the present utility model, part of the heated condensed fresh air can be extracted for the heating regeneration of the rotary wheel 7 to recover part of the energy.

[0041] The first filter 1 and the second filter 16 at the air inlet of the dehumidifier (high-humidity gas and condensed fresh air) are medium-effect filters to prevent dust from entering the rotary wheel 7 and blocking the pores.

[0042] The temperature of the heated condensed fresh air extracted by the regeneration fan 24 is still not high enough to achieve the heating regeneration of the runner 7. It still needs to be reheated by the regeneration heater 21 before it can enter the runner 7 to desorb the absorbed moisture. The conveyance of the heated regeneration gas is achieved by the regeneration fan 24.

[0043] By controlling the rotational speed of the condensation fan 27 through a frequency converter, the air volume of the condensation fan 27 is adjusted. The frequency converter and the sixth temperature and humidity sensor 20 are in closed-loop control. When the sixth temperature and humidity sensor 20 detects that the temperature of the heated condensed fresh air is too high, the frequency of the frequency converter is increased, the rotational speed of the condensation fan 27 becomes larger, the air volume of the condensed fresh air becomes larger, and the temperature of the heated condensed fresh air gas decreases; conversely, when the sixth temperature and humidity sensor 20 detects that the temperature of the heated condensed fresh air is too low, the frequency of the frequency converter is decreased, the rotational speed of the condensation fan 27 becomes smaller, the air volume of the condensed fresh air becomes smaller, and the temperature of the heated condensed fresh air gas increases. This closed-loop feedback control scheme can not only effectively cool the refrigerant, reduce the energy consumption of the condensation fan 27, but also ensure that the calorific value of the heated condensed fresh air is not too low and lose the value of recycling.

[0044] By controlling the heating power of the regeneration heater 21 through the opening and closing of a relay, the heating power of the regeneration heater 21 is adjusted. The regeneration heater 21 and the temperature sensor 22 are in closed-loop control. When the temperature sensor 22 detects that the temperature of the regeneration gas is too high, the heating power of the regeneration heater 21 is decreased, and the temperature of the regeneration gas decreases; conversely, when the temperature sensor 22 detects that the temperature of the regeneration gas is too low, the heating power of the regeneration heater 21 is increased, and the temperature of the regeneration gas increases. This closed-loop feedback control scheme can ensure that the temperature of the regeneration gas is stably within the required range, without burning out the runner 7, and can also realize the desorption regeneration of the runner 7 in a more economical state.

[0045] The temperature sensor 22 has the functions of high-temperature (exceeding 180°C) alarm and automatically adjusting or cutting off the power supply of the regeneration heater 21. At the same time, an induction probe for the operation of the runner 7 is also provided. If the runner 7 accidentally stops running, the induction probe alarms and cuts off the power supply of the regeneration heater 21 to prevent the high-temperature airflow from burning and damaging the medium in the regeneration area for a long time.

[0046] A flow sensor 26 and a third manual valve 25 are provided in the outlet pipeline of the regeneration fan 24. The regeneration fan 24 is a constant-frequency fan. The opening degree of the third manual valve 25 is adjusted to make the flow sensor 26 reach the required value, and then the opening degree of the third manual valve 25 remains unchanged; the regeneration fan 24 and the condensation fan 27 operate independently. The regeneration fan 24 has a small air volume and a large pressure, and the condensation fan 27 has a large air volume and a small pressure. This configuration scheme can ensure that when the air volume of the condensation fan 27 changes, the air volume of the regeneration fan 24 is not affected.

[0047] The runner 7 is driven by a reduction motor to achieve slow rotation of the runner 7. When the rotation speed of the runner 7 is relatively fast, the contact time between the medium-humidity gas and the runner 7 becomes shorter, the adsorbed moisture content decreases, and the dehumidification effect of the dehumidifier deteriorates. It is necessary to reduce the rotation speed of the runner 7. The rotation speed of the runner 7 is in closed-loop control with the temperature and humidity sensor 8. When the third temperature and humidity sensor 8 detects that the relative humidity of the low-humidity gas is too high, the rotation speed of the runner 7 is reduced to extend the adsorption time; conversely, when the third temperature and humidity sensor 8 detects that the relative humidity of the low-humidity gas is too low, the rotation speed of the runner 7 is increased to shorten the adsorption time. This closed-loop feedback control scheme can ensure that the relative humidity of the low-humidity gas is stabilized within the required range.

[0048] In the marine dehumidifier of the present utility model, all automatic control functions are completed by the PLC and the touch screen. After setting the parameters and valve openings during the commissioning phase, the automatic control and automatic protection of the system can be achieved.

[0049] As Figures 2 to 5 shown, during actual installation and use, the marine dehumidifier of the present utility model adopts the following layout:

[0050] The marine dehumidifier includes a housing 28. A high-humidity gas inlet 29 is provided at the lower left end of the housing 28. A first filter 1 and a first manual valve 2 are installed on the inlet pipeline of the high-humidity gas inlet 29. A regeneration fan 24 and a regeneration exhaust outlet 30 are installed at the upper left end of the housing 28. A low-humidity gas outlet 31 is provided at the top of the housing 28. A condensate outlet 32 is provided at the bottom of the housing 28. A condensate fresh air inlet 33 is provided at the lower right end of the housing 28. A second filter 16 and a second manual valve 17 are installed on the inlet pipeline of the condensate fresh air inlet 33. A condensate exhaust outlet 34 is provided at the upper right end of the housing 28.

[0051] As Figures 6 to 9 shown, the evaporator 5 is installed on the left side of the housing 28 corresponding to the high-humidity gas inlet 29. The runner 7 is installed on the right side of the evaporator 5. The regeneration heater 21 is installed above the right of the runner 7. The adsorption fan 9 is installed below the right of the runner 7. The condensate fan 27 is installed on the right side of the housing 28 corresponding to the condensate exhaust outlet 34. The condenser 19 is installed below the condensate fan 27.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A marine dehumidifier for improving energy efficiency, characterized in that, It includes an evaporator (5), a rotary wheel (7), an adsorption fan (9), a condenser (19), a regeneration heater (21), a regeneration fan (24) and a condensation fan (27). The evaporator (5) inputs high-temperature gas, and the condenser (19) inputs condensed fresh air. The condenser (19) exchanges heat with the evaporator (5). The output end of the evaporator (5) is communicated with the inlet of the adsorption area of the rotary wheel (7) through a pipeline. The outlet of the adsorption area of the rotary wheel (7) is communicated with the input end of the adsorption fan (9) through a pipeline. The gas output end of the condenser (19) is communicated with the input ends of the regeneration heater (21) and the condensation fan (27) respectively through pipelines. The output end of the regeneration heater (21) is communicated with the inlet of the regeneration area of the rotary wheel (7) through a pipeline. The regeneration heater (21) is controlled by a relay. A temperature sensor (22) is provided at the output end of the regeneration heater (21). The temperature sensor (22) is electrically connected to the relay. The outlet of the regeneration area of the rotary wheel (7) is communicated with the input end of the regeneration fan (24) through a pipeline. The rotational speed of the regeneration fan (24) is controlled by a frequency converter. A sixth temperature and humidity sensor (20) is provided at the output end of the condenser (19). The sixth temperature and humidity sensor (20) is electrically connected to the frequency converter.

2. The marine dehumidifier for improving energy efficiency according to claim 1, characterized in that, A second filter (16), a second manual valve (17) and a fifth temperature and humidity sensor (18) are successively provided in the pipeline at the input end of the condenser (19).

3. The marine dehumidifier for improving energy efficiency according to claim 1, characterized in that, A first filter (1), a first manual valve (2), a first temperature and humidity sensor (3) and a first dew point temperature sensor (4) are successively provided in the pipeline at the input end of the evaporator (5). A second temperature and humidity sensor (6) is provided in the pipeline at the output end of the evaporator (5).

4. The marine dehumidifier for improving energy efficiency according to claim 1, wherein, A third manual valve (25) and a flow sensor (26) are successively provided in the pipeline at the output end of the regeneration fan (24).

5. The marine dehumidifier for improving energy efficiency according to claim 1, characterized in that, A third temperature and humidity sensor (8) is provided in the pipeline at the outlet of the adsorption area of the rotary wheel (7). A seventh temperature and humidity sensor (23) is provided in the pipeline at the outlet of the regeneration area of the rotary wheel (7).

6. The marine dehumidifier for improving energy efficiency according to claim 1, characterized in that, A fourth temperature and humidity sensor (10) and a second dew point temperature sensor (11) are successively provided in the pipeline at the output end of the adsorption fan (9).

7. The marine dehumidifier for improving energy efficiency according to claim 1, characterized in that, A compressor (14) is provided in the cooling pipeline between the condenser (19) and the evaporator (5), and an expansion valve (12) is provided in the heating pipeline between the evaporator (5) and the condenser (19).

8. The marine dehumidifier for improving energy efficiency according to claim 7, characterized in that, A first pressure sensor (13) and a second pressure sensor (15) are respectively provided at both ends of the compressor (14).

Images