Solution type variable frequency heat pump fresh air dehumidifier

Abstract

The application relates to the technical field of dehumidifiers and discloses a solution type variable-frequency heat pump fresh air dehumidifier, which comprises a machine box, a heat pump unit, a dehumidifying unit and a regenerating unit are arranged in the machine box; the heat pump unit comprises a compressor one, a compressor two, a condenser one, a condenser two, an evaporator one and an evaporator two; the compressor one, the condenser one and the evaporator one are sequentially connected in series through copper pipes to form a closed loop circuit; the compressor two, the condenser two and the evaporator two are sequentially connected in series through copper pipes to form a closed loop circuit; the advanced solution type humidity control technology is adopted, moisture is absorbed or released from air through a solution, and the air humidity is controlled; compared with conventional refrigeration dehumidification, the energy consumption of dehumidification is reduced, the humid surface generated in the refrigeration dehumidification is cancelled, the breeding of mold is eliminated, and the indoor air quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dehumidifiers, in particular to a solution type variable frequency heat pump fresh air dehumidifier. BACKGROUND

[0002] China is vast in territory, and the climate is very different in different regions. Compared with the hot and humid climate in the coastal areas in summer, the northwest region is hot and dry in summer. In the hot and humid climate in the coastal areas in summer, the multi-stage indirect evaporation technology can be fully utilized to provide cool air in summer. However, the air source heat pump has no use in the hot and humid climate in the coastal areas in summer. If the relative humidity of air is large, the air source heat pump will be affected by outdoor weather conditions, and the heating water temperature will be unstable due to the problem of frosting and defrosting, and the heating efficiency of the unit will decrease.

[0003] At present, the shipbuilding industry generally uses refrigeration for cooling, and the refrigeration runner combination is used for dehumidification. In winter, electric heating or gas is used for heating. Such combination has high energy consumption, which not only causes economic waste, but also causes great safety hazards due to the use of a large amount of electric heating, and causes a large amount of carbon emissions.

[0004] Energy saving and environmental protection is not only a basic national policy of China, but also a long-term strategy for economic development of China. According to the demand of the state for energy saving and emission reduction, it is urgent to develop and design a low-energy-consumption equipment suitable for the shipbuilding process to solve the above problems. SUMMARY

[0005] According to the above technical problems, a solution type variable frequency heat pump fresh air dehumidifier is provided. The present application mainly utilizes the cold and heat generated by the solution variable frequency heat pump dehumidification system, so that the energy utilization efficiency is high, the COP of the unit is above 5.5, and the unit integrates the cold and heat source, heat recovery device and the like, without the need for additional auxiliary equipment.

[0006] The technical means adopted by the present application are as follows:

[0007] A solution type variable frequency heat pump fresh air dehumidifier, comprising a cabinet, wherein a heat pump unit, a dehumidification unit and a regeneration unit are arranged in the cabinet;

[0008] The heat pump unit comprises a compressor one, a compressor two, a condenser one, a condenser two, an evaporator one and an evaporator two. The compressor one, the condenser one and the evaporator one are sequentially connected in series by copper pipes to form a closed loop circuit. The compressor two, the condenser two and the evaporator two are sequentially connected in series by copper pipes to form a closed loop circuit.

[0009] The dehumidification unit comprises a core frame one, an evaporator three and a dehumidification pump, the inside of the core frame one is provided with a core one, the top of the core frame one is provided with a liquid distributor one, the bottom of the core frame one is provided with a solution tank one, and the back of the core one is provided with a mist barrier one;

[0010] The regeneration unit comprises a core frame two, a condenser three and a regeneration pump, the inside of the core frame two is provided with a core two, the top of the core frame two is provided with a liquid distributor two, the bottom of the core frame two is provided with a solution tank two, and the back of the core two is provided with a mist barrier two.

[0011] Further, the inside of the cabinet is dehumidified, the regeneration channel and the equipment containing cavity, the heat pump unit is arranged in the equipment containing cavity, the dehumidification unit is arranged in the dehumidification channel, and the regeneration unit is arranged in the regeneration channel.

[0012] Further, the inside of the dehumidification channel is provided with a solution tank, a solution pump one, a solution pump two and a compressor three, the solution tank, the solution pump one, the evaporator three and the dehumidification unit are sequentially connected in series into a closed loop circuit through copper pipes, and the solution tank, the solution pump two, the condenser three and the regeneration unit are sequentially connected in series into a closed loop circuit through copper pipes.

[0013] Further, the solution tank one is communicated with the solution tank through the dehumidification pump, the solution tank two is communicated with the solution tank through the regeneration pump, and the condenser three, the compressor three and the evaporator three are sequentially connected in series into a closed loop circuit through copper pipes.

[0014] Further, the front of the cabinet is provided with an air inlet face, and the surface of the air inlet face is provided with a filter screen, the bottom of one side of the cabinet is provided with an air supply port, a plurality of air supply ports are arranged, and the top of the side of the cabinet away from the air supply port is provided with a solution regeneration air outlet.

[0015] Further, the core one and the core two are in a plurality of pieces structure, a single piece core is made of a non-woven fabric surface with PP as a base material, the non-woven fabric surface is subjected to hydrophilic treatment, is subjected to high-temperature setting by a corrugating machine to be in a wave shape, and is stacked according to core specifications.

[0016] Further, the mist barrier one and the mist barrier two comprise a water baffle and a gas-liquid separator, and the gas-liquid separator is composed of multiple layers of nylon nets.

[0017] The application has the following advantages:

[0018] 1. Advanced solution dehumidification technology is adopted, moisture is absorbed or released by the solution to the air, and the air humidity is adjusted; compared with conventional refrigeration dehumidification, the energy consumption of dehumidification is reduced, and the humid surface generated by refrigeration dehumidification is cancelled, thereby preventing the breeding of mold and improving the indoor air quality;

[0019] 2. It is not a new fan unit in the general sense, it is a new air treatment equipment integrating cold and heat source, total heat recovery section, air humidification, dehumidification treatment section, filter section and fan section, and has multiple functions of air cooling, dehumidification, heating, humidification and purification, and can meet the requirement of new air treatment throughout the year by independent operation, and the unit does not need additional auxiliary equipment, is flexible in application and simple in operation, and is suitable for all places requiring new air supply;

[0020] 3. The direct energy consumption of the present application is reduced by 37% compared with the refrigeration dehumidification technology of the prior art, and in terms of indirect energy saving, the evaporation temperature of the refrigeration dehumidification is between 0-2℃, or 5° or 7℃ cold water is used, while the evaporation temperature of the solution dehumidification of the present application is only between 8-13℃, or 14-18℃ cold water is used, so that the evaporation temperature of the cold water system is increased by nearly 10℃, thereby greatly improving the energy efficiency ratio of the system;

[0021] 4. The present application can realize independent control of temperature and humidity and all-weather operation.

[0022] Based on the above reasons, the present application can be widely popularized in the dehumidification technical field of the shipbuilding industry. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 It is a structural schematic diagram of the present application;

[0025] Fig. 2 It is a sectional view schematic diagram of the machine box of the present application;

[0026] Fig. 3 It is a side structure schematic diagram of the machine box of the present application.

[0027] In the figure: 1, machine box; 101, air inlet face; 102, air supply port; 103, solution regeneration exhaust port; 201, compressor one; 202, compressor two; 203, condenser one; 204, condenser two; 205, evaporator one; 206, evaporator two; 301, core frame one; 302, core one; 303, liquid distributor one; 304, solution tank one; 305, mist eliminator one; 306, evaporator three; 307, dehumidification pump; 401, core frame two; 402, core two; 403, liquid distributor two; 404, solution tank two; 405, mist eliminator two; 406, condenser three; 407, regeneration pump; 501, solution tank; 502, solution pump one; 503, solution pump two. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0029] The present application will be further described below with reference to the drawings in the embodiments of the present application.

[0030] Please refer to Figs. 1-3 In the embodiments of the present application, a solution type variable frequency heat pump fresh air dehumidifier includes a cabinet 1, and the inside of the cabinet 1 is provided with a heat pump unit, a dehumidification unit and a regeneration unit.

[0031] In the embodiments, preferably, the inside of the cabinet 1 is provided with a dehumidification channel, a regeneration channel and a device accommodating cavity, the heat pump unit is arranged in the device accommodating cavity, the dehumidification unit is arranged in the dehumidification channel, the regeneration unit is arranged in the regeneration channel, and the dehumidification unit and the regeneration unit are stacked in the vertical direction, so as to reduce the occupied space.

[0032] In the embodiments, preferably, the front of the cabinet 1 is provided with an air inlet surface 101 for allowing fresh air to enter, and the surface of the air inlet surface 101 is provided with a filter screen for filtering dust in the fresh air, the bottom of one side of the cabinet 1 is provided with a plurality of air outlet ports 102 for discharging air dried by dehumidification, and the top of the side of the cabinet 1 away from the air outlet ports 102 is provided with a solution regeneration air outlet port 103.

[0033] The heat pump unit includes a compressor one 201, a compressor two 202, a condenser one 203, a condenser two 204, an evaporator one 205 and an evaporator two 206, the compressor one 201, the condenser one 203 and the evaporator one 205 are sequentially connected in series by copper pipes to form a closed loop, the compressor two 202, the condenser two 204 and the evaporator two 206 are sequentially connected in series by copper pipes to form a closed loop, and an expansion valve is arranged on the copper pipe, and the compressor one 201 and the compressor two 202 are provided with an electromagnetic four-way reversing valve for changing the exhaust direction of the compressor one 201 and the compressor two 202.

[0034] The dehumidification unit comprises a core frame 301, an evaporator 306 and a dehumidification pump 307. The inside of the core frame 301 is provided with a core 302. The top of the core frame 301 is provided with a liquid distributor 303, which is located directly above the core 302, so that the solution falls uniformly into the solution channel of the core 302. The bottom of the core frame 301 is provided with a solution tank 304. The back of the core 302 is provided with a mist eliminator 305, which can effectively prevent liquid from being brought into the air-conditioned room by the wind.

[0035] The regeneration unit comprises a core frame 401, a condenser 406 and a regeneration pump 407. The inside of the core frame 401 is provided with a core 402. The top of the core frame 401 is provided with a liquid distributor 403, which is located directly above the core 402, so that the solution falls uniformly into the solution channel of the core 402. The bottom of the core frame 401 is provided with a solution tank 404. The back of the core 402 is provided with a mist eliminator 405, which can effectively prevent liquid from being brought into the air-conditioned room by the wind.

[0036] In this embodiment, preferably, the inside of the dehumidification channel is provided with a solution tank 501, a solution pump 502, a solution pump 503 and a compressor 504. The solution tank 501, the solution pump 502, the evaporator 306 and the dehumidification unit are sequentially connected in series by copper pipes to form a closed loop circuit. The solution tank 501, the solution pump 503, the condenser 406 and the regeneration unit are sequentially connected in series by copper pipes to form a closed loop circuit. The solution pump 502 and the solution pump 503 are selected to be magnetic force pumps. Since the transmission shaft does not need to penetrate into the pump shell, but uses the magnetic field to transmit torque through the air gap and the thin wall of the isolation sleeve to drive the inner rotor, the leakage channel of the shaft seal is fundamentally eliminated, and complete sealing is achieved. The magnetic force pump does not have the phenomenon of demagnetization aging over time under normal operating conditions.

[0037] In this embodiment, preferably, the solution tank 304 is communicated with the solution tank 501 through the dehumidification pump 307. The solution in the solution tank 304 can be passed into the solution tank 501 through the dehumidification pump 307 for the next step of solution regeneration. The solution tank 404 is communicated with the solution tank 501 through the regeneration pump 407. The solution in the solution tank 404 can be passed into the solution tank 501 through the regeneration pump 407 for circulation. The condenser 406, the compressor 504 and the evaporator 306 are sequentially connected in series by copper pipes to form a closed loop circuit. The copper pipes are provided with expansion valves.

[0038] In this embodiment, preferably, the core 302 and the core 402 are multi-piece structures, and a single-piece core is made of a PP-based non-woven fabric surface that is subjected to hydrophilic treatment, then is made into a wave shape by a corrugator at high temperature, and is stacked according to the core specifications. The solution is uniformly distributed on the core surface by a liquid distributor from top to bottom, and the treatment wind horizontally passes through the wave-shaped core. Due to the presence of the core, the wind has a certain resistance when passing through the core. When the wind speed of the core is less than 2 m / s, the wind resistance of the core is less than 150 pa, which is much smaller than the wind resistance of the runner. The initial wind resistance of the runner is about 400-500 pa. Therefore, after the solution is modified, the air volume will not decrease under the condition that the fan remains unchanged.

[0039] In this embodiment, preferably, the mist preventer 305 and the mist preventer 405 include a water baffle and a gas-liquid separator, and the gas-liquid separator is composed of multiple layers of nylon mesh. The solution on the core surface contacts with the treatment wind, so that heat and mass exchange occurs, and the desired results of dehumidification and regeneration are obtained. In order to prevent the wind from carrying the solution, two liquid resistance devices, a water baffle and a gas-liquid separator, are added behind the core. These two devices can effectively prevent liquid from being carried into the air conditioning room by the wind.

[0040] In use, the wet air passes through the evaporator 205 and the evaporator 206 in the heat pump unit, and contacts with the surfaces of the evaporator 205 and the evaporator 206. Since the surface temperature of the evaporator 205 and the evaporator 206 is lower than the dew point temperature of the wet air, the water vapor in the air condenses into water droplets, which are collected in the condensate pan and then discharged, so that the temperature and the humidity content of the air passing through the evaporator 205 and the evaporator 206 are reduced, and then the air is dehumidified by the solution section. The fresh air is preliminarily cooled and dehumidified, and then enters the dehumidification unit to be further cooled and dehumidified to reach the supply air state point. In the dehumidification unit, the humidity control solution absorbs water vapor, and the concentration becomes dilute. In order to have the ability to absorb water again, the dilute solution enters the regeneration unit for concentration. The solution (LiCl or CaCl2) corresponds to a certain water vapor partial pressure at different temperatures and concentrations, while the air (wet air) also corresponds to a certain water vapor partial pressure at a certain water content. When the two meet, water transfer is triggered due to the imbalance of water vapor partial pressure.

[0041] In summer air conditioning cooling, according to refrigeration working condition, high pressure steam discharged by compressor one 201 and compressor two 202 enters condenser one 203 and condenser two 204, refrigerant steam is condensed into liquid, enters evaporator one 205 and evaporator two 206 through throttling device, absorbs heat in evaporator one 205 and evaporator two 206, and cools treated air, evaporated refrigerant steam is sucked into compressor two 202 by compressor one 201 after reversing valve, so as to realize refrigeration cycle; when environmental high temperature working condition, part of liquid refrigerant in liquid accumulator can be injected into compressor by opening electromagnetic valve to reduce internal working temperature of compressor and improve refrigeration system working condition; when spring and autumn season, heat and humidity load is small, but refrigeration system still needs to be started, part of high pressure refrigerant steam of compressor can be injected into evaporator by opening electromagnetic valve to ensure continuous operation of refrigeration system;

[0042] After outdoor fresh air is dehumidified by the above cooling and dehumidifying, the fresh air enters the dehumidifying unit for independent dehumidification. The solution is pumped out from the solution tank 501 by the solution pump one 502, and is cooled by heat exchange with the evaporator three 306, and is then sent into the liquid distributor one 303. The solution is uniformly distributed in the solution channel of the core one 302 by the liquid distributor one 303. The water in the air enters the solution channel under the action of the water vapor pressure difference on the wall surface of the air channel of the core one 302. At the same time, the air is cooled by the solution due to heat conduction. The air is treated into dry air and is sent into the room. The solution falls into the inside of the solution tank one 304, and is pumped into the solution tank 501 by the dehumidifying pump 307. The solution is pumped out from the solution tank 501 by the solution pump two 503, and is heated by heat exchange with the condenser three 406. The solution is then sent into the liquid distributor two 403. The solution is uniformly distributed in the solution channel of the core two 402 by the liquid distributor two 403. The water in the solution enters the air channel under the action of the water vapor pressure difference on the wall surface of the air channel of the core two 402. At the same time, the air is heated by the solution due to heat conduction. The air is treated into high temperature and humid air and is discharged. The solution is concentrated and regenerated.

[0043] In winter heating, the electromagnetic four-way reversing valve is turned to the heat pump working position. High pressure refrigerant steam discharged by the compressor one 201 and the compressor two 202 enters the evaporator one 205 and the evaporator two 206. The latent heat released when the refrigerant steam is condensed heats the treated air to achieve the purpose of heating and dehumidification. The condensed liquid refrigerant enters the condenser one 203 and the condenser two 204 from the reverse throttling device to absorb external heat and evaporate. The evaporated steam is sucked into the compressor one 201 and the compressor two 202 after the reversing valve to complete the heating cycle.

[0044] It should be noted that, in the above working condition, the system defrosting can be carried out in the following way, i.e. the high-pressure refrigerant steam discharged by the compressor one 201 and the compressor two 202 is filled into the condenser one 203 and the condenser two 204 to defrost, when the relative humidity of the process air is lower than the set requirement, the humidifier arranged at the rear of the condenser one 203 and the condenser two 204 is opened to adjust the humidity of the process air system to meet the process requirement.

[0045] The solution type variable frequency heat pump fresh air dehumidifier has the advantages of energy saving, high efficiency, safety and reliability, high stability, safety, simple operation and the like, can provide 100% healthy and clean fresh air, the advanced humidity treatment method avoids the humid surface caused by refrigeration dehumidification, prevents the breeding of mold and microorganisms on the air duct and coil surface, effectively removes bacteria and inhalable particulate matter through spraying solution, and purifies air. The structure can be designed as a whole or in parts, and is convenient to install on site.

[0046] The above embodiments are only the preferred embodiments of the present application and are not used to limit the present application; although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A solution-type variable frequency heat pump fresh air dehumidifier, comprising a casing (1), characterized in that, The dehumidifier is a low-energy-consumption device suitable for shipbuilding processes. The interior of the casing (1) is equipped with a heat pump unit, a dehumidification unit and a regeneration unit. The interior of the chassis (1) is provided with a dehumidification channel, a regeneration channel and an equipment housing cavity. The heat pump unit is located in the equipment housing cavity, the dehumidification unit is located in the dehumidification channel, and the regeneration unit is located in the regeneration channel. The heat pump unit includes compressor one (201), compressor two (202), condenser one (203), condenser two (204), evaporator one (205) and evaporator two (206). Compressor one (201), condenser one (203) and evaporator one (205) are connected in series with copper pipes to form a closed loop. Compressor two (202), condenser two (204) and evaporator two (206) are connected in series with copper pipes to form a closed loop. An expansion valve is installed on the copper pipe. Compressor one (201) and compressor two (202) are equipped with electromagnetic four-way reversing valves to change the exhaust direction of compressor one (201) and compressor two (202). The dehumidification unit includes a core frame (301), an evaporator (306), and a dehumidification pump (307). The core frame (301) has a core (302) inside, a liquid distributor (303) on the top of the core frame (301), a solution tank (304) at the bottom of the core frame (301), and a fog blocker (305) on the back of the core (302). The regeneration unit includes a core frame 2 (401), a condenser 3 (406), and a regeneration pump (407). The core frame 2 (401) has a core 2 (402) inside, a liquid distributor 2 (403) on the top of the core frame 2 (401), a solution tank 2 (404) at the bottom of the core frame 2 (401), and a fog blocker 2 (405) on the back of the core 2 (402). The dehumidification channel is equipped with a solution tank (501), a solution pump one (502), a solution pump two (503), and a compressor three (504). The solution tank (501), solution pump one (502), evaporator three (306), and dehumidification unit are connected in series with copper pipes to form a closed loop. The solution tank (501), solution pump two (503), condenser three (406), and regeneration unit are connected in series with copper pipes to form a closed loop. Solution pump one (502) and solution pump two (503) are magnetic pumps. The magnetic field is used to transmit torque through the air gap and the thin wall of the isolation sleeve to drive the inner rotor and achieve complete sealing. The first solution tank (304) is connected to the solution tank (501) via a dehumidification pump (307). The dehumidification pump (307) can pass the solution in the first solution tank (304) into the solution tank (501) for further solution regeneration. The second solution tank (404) is connected to the solution tank (501) via a regeneration pump (407). The regeneration pump (407) can pass the solution in the second solution tank (404) into the solution tank (501) for recycling. The third condenser (406), the third compressor (504), and the third evaporator (306) are connected in series with copper pipes to form a closed loop.

2. The solution-type variable frequency heat pump fresh air dehumidifier according to claim 1, characterized in that: The front of the chassis (1) is provided with an air inlet (101), and the surface of the air inlet (101) is provided with a filter screen. The bottom of one side of the chassis (1) is provided with an air outlet (102), and multiple air outlets (102) are provided. The top of the side of the chassis (1) away from the air outlets (102) is provided with a solution regeneration exhaust outlet (103).

3. The solution-type variable frequency heat pump fresh air dehumidifier according to claim 1, characterized in that: The core one (302) and core two (402) are multi-piece structures. Each core piece is made of non-woven fabric with PP as the base material, which is hydrophilic treated and then shaped into a wave shape by high temperature setting by a corrugating machine. The core pieces are then stacked on both sides according to the core specifications.

4. The solution-type variable frequency heat pump fresh air dehumidifier according to claim 1, characterized in that: The first fog blocker (305) and the second fog blocker (405) include a baffle plate and a gas-liquid separator, and the gas-liquid separator is composed of multiple layers of nylon mesh.

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