Dehumidifier applied to multiple working conditions
By controlling the solenoid valves of the parallel condenser and evaporator, the dehumidifier can operate normally in both low and high temperature environments, solving the problem of low efficiency of conventional dehumidifiers under multiple operating conditions and improving the reliability and applicability of the dehumidifier.
Patent Information
- Application Number
- CN202520494534.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Conventional dehumidifiers are inefficient in low and high temperature environments, and may even shut down, making it difficult to meet the application needs of various working conditions.
The condenser and evaporator are connected in parallel and controlled by solenoid valves to achieve single or double operation modes of the condenser and evaporator, adapting to different ambient temperatures and ensuring that the dehumidifier can work normally in low and high temperature environments.
This expands the application range of dehumidifiers, improves their reliability and operational stability in different environments, and ensures normal operation within a temperature range of 5℃ to 40℃.
Smart Images
Figure CN223925013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a dehumidifier, specifically a dehumidifier for multi-condition applications. Background Technology
[0002] Dehumidifiers, also known as moisture removers or dehumidifiers, are widely used in laboratories, computer rooms, metrology rooms, libraries, archives, offices, material storage facilities, food and agricultural product warehouses, etc., to prevent electronic products, optical instruments, precision equipment and valuables from getting damp and moldy.
[0003] like Figure 4 , Figure 5 As shown, a dehumidifier mainly consists of a compressor, heat exchanger, throttling element, water tray, fan, controller, and casing. Its working principle is as follows: the fan draws humid air into the machine, and through heat exchange, the moisture in the air is condensed into water droplets that flow into the water tray. The treated dry air is then discharged outside the machine. This cycle continues to reduce indoor humidity.
[0004] The drawbacks of conventional dehumidifiers are:
[0005] Dehumidifiers typically employ a single-circuit condenser and a single-circuit evaporator structure, and the throttling element is usually a capillary tube. During the design process, a single operating condition (national standard operating condition 27℃ 60%) is often used as the standard for system matching and debugging. Conventional comfort dehumidifiers operate between 18-35 degrees Celsius, and their efficiency is extremely low in the low and high temperature ranges, sometimes even resulting in shutdown.
[0006] For example, in plant seed greenhouses, the ambient temperature difference between winter and summer is significant (as low as 5°C in winter and as high as 40°C in summer). The low winter temperatures result in a low system load, easily leading to low evaporation temperatures and causing the evaporator to frost and lose its dehumidification capacity. Conversely, the high summer temperatures result in a high system load, easily leading to high evaporation temperatures and excessively high return air temperatures and superheats, causing the compressor to overheat or even shut down. Therefore, conventional dehumidifiers are often insufficient to meet these application requirements. Utility Model Content
[0007] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide a dehumidifier for multi-condition applications, which should have the characteristics of high reliability and wide application range.
[0008] The technical solution of this utility model is:
[0009] A multi-condition dehumidifier includes a chassis, controller, compressor, evaporator, condenser, throttling element, drip tray, water tank, and fan; the compressor, condenser, throttling element, and evaporator are sequentially connected via pipes to form a refrigerant circulation channel; characterized in that:
[0010] The condenser includes a first condenser and a second condenser connected in parallel; a condenser control valve for controlling whether the condenser is open or closed is provided between the compressor and the condenser;
[0011] The evaporator includes a first evaporator and a second evaporator connected in parallel; an evaporator control valve is provided between the condenser and the evaporator for controlling whether the evaporator is open or closed; both the first evaporator and the second evaporator are equipped with throttling elements;
[0012] The controller is electrically connected to the condenser control valve and the evaporator control valve.
[0013] The compressor is connected to the condenser control valve through the exhaust pipe, and the condenser control valve is connected to the first condenser and the second condenser through two exhaust branch pipes respectively; the condenser is connected to the evaporator control valve through the drain pipe, and the evaporator control valve is connected to the first evaporator and the second evaporator through two throttling elements respectively; both the condenser control valve and the evaporator control valve are three-way solenoid valves.
[0014] The compressor is connected to the first condenser and the second condenser via an exhaust pipe and two exhaust branch pipes, one of which is equipped with a condenser control valve; the condenser is connected to the first evaporator and the second evaporator via a drain pipe and two throttling elements, one of which is equipped with an evaporator control valve; both the condenser control valve and the evaporator control valve are two-way solenoid valves.
[0015] The first evaporator, the second evaporator, the first condenser, and the second condenser are arranged sequentially along the airflow direction.
[0016] The throttling element is a throttling tube.
[0017] The water receiving tray is located below the evaporator; the water receiving tray is connected to the water tank through a drain pipe.
[0018] The evaporator, condenser, and fan are arranged sequentially between the air inlet and air outlet of the casing.
[0019] A filter screen is also installed between the air inlet of the chassis and the evaporator.
[0020] The beneficial effects of this utility model are:
[0021] The condenser and evaporator of this invention are both connected in parallel. The condenser and evaporator can be switched on or off individually depending on the operating conditions, so that the dehumidifier can work normally in both low-temperature and high-temperature environments. This effectively expands the application range of the dehumidifier and further improves its reliability. Attached Figure Description
[0022] Figure 1This is a schematic diagram of the main structure of Embodiment 1.
[0023] Figure 2 This is a schematic diagram of the connection relationship in Example 1.
[0024] Figure 3 This is a schematic diagram of the connection relationship in Example 2.
[0025] Figure 4 This is a schematic diagram of the front view structure of existing technology.
[0026] Figure 5 This is a schematic diagram of the connection relationships in existing technologies.
[0027] Attached reference numerals: 1. Filter screen; 2. First evaporator; 3. Second evaporator; 4. Water tray; 5. Return gas pipe; 6. Drain pipe; 7. Water tank; 8. Compressor; 9. Exhaust pipe; 10. First condenser; 11. Second condenser; 12. Condenser control valve; 13. Fan; 14. Evaporator control valve; 15. Throttling element; 16. Exhaust branch pipe; 17. Liquid drain pipe. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.
[0029] Example 1
[0030] like Figure 1 As shown, a dehumidifier for multi-condition applications includes a chassis, a controller, a compressor 8, an evaporator, a condenser, a throttling element 15, a drip tray 4, a water tank 7, and a fan 13.
[0031] The chassis is equipped with an air inlet and an air outlet, with the evaporator, condenser, and fan arranged sequentially between them. A filter screen 1 is also installed between the air inlet and the evaporator. The air inlet side of the fan is in close contact with the condenser, and the air outlet side is in close contact with the air outlet. A water collection tray is located below the evaporator, and the water collection tray is connected to a water tank via a drain pipe 6. The controller is electrically connected to the compressor and the fan.
[0032] The compressor, condenser, throttling element, and evaporator are the main components of the dehumidifier refrigeration system. The compressor, condenser, throttling element, and evaporator are connected in sequence through pipelines to form a refrigerant circulation channel: the compressor's exhaust port is connected to the condenser's inlet through the exhaust pipe 9, the condenser's outlet is connected to the evaporator's inlet through the throttling element, and the evaporator's outlet is connected to the compressor's suction port through the return pipe 5, thus forming a circulation channel.
[0033] The improvement of this embodiment is as follows:
[0034] The condenser includes a first condenser 10 and a second condenser 11. The first condenser and the second condenser are arranged in parallel. A condenser control valve 12 is provided between the compressor and the condenser. The controller is electrically connected to the condenser control valve, which is a three-way solenoid valve.
[0035] The condenser control valve is used to control whether the condenser is open or closed. When it is open, the first condenser or the second condenser works simultaneously. When it is closed, the first condenser and the second condenser work simultaneously.
[0036] The compressor is connected to the inlet of the condenser control valve through the exhaust pipe, and the two outlets of the condenser control valve are connected to the first condenser and the second condenser through two exhaust branch pipes 16 respectively.
[0037] The evaporator includes a first evaporator 2 and a second evaporator 3. The first evaporator and the second evaporator are arranged in parallel and each has an independent throttling element. An evaporator control valve 14 is provided between the condenser and the evaporator. The controller is electrically connected to the evaporator control valve, which is a three-way solenoid valve.
[0038] The evaporator control valve is used to control whether the evaporator is open or closed. When open, the first evaporator or the second evaporator works simultaneously. When closed, the first evaporator and the second evaporator work simultaneously.
[0039] The first condenser and the second condenser are connected to the inlet of the evaporator control valve via a drain pipe 17. The two outlets of the evaporator control valve are connected to the first evaporator and the second evaporator respectively via two throttling elements. The throttling element is a throttling tube. The throttling element can also be an electronic expansion valve or a thermostatic expansion valve.
[0040] The first evaporator, the second evaporator, the first condenser, and the second condenser are arranged sequentially along the airflow direction. Preferably, when only one is in operation, the first evaporator and the first condenser, which are closer to the windward side, are working, while the second evaporator and the second condenser, which are farther from the windward side, are not working.
[0041] The working principle of this utility model is as follows:
[0042] 1. Throughout the entire cycle: The compressor plays the role of compressing and transporting the refrigerant, creating low pressure in the evaporator and high pressure in the condenser, and is the heart of the entire system; the throttling element throttles and reduces the pressure of the refrigerant and regulates the flow rate of the refrigerant entering the evaporator; the evaporator is the device that causes condensation in the air, where the refrigerant absorbs heat from the air, and the air condenses upon encountering the cold air, thus achieving the purpose of dehumidification; the condenser is the heat output device, where the heat absorbed from the evaporator, along with the heat converted from the work consumed by the compressor, is carried away by the air through the condenser.
[0043] 2. In normal temperature environment, operate in single condenser and single evaporator mode: Close one outlet of condenser control valve 12 to open only the condenser, that is, the first condenser 10 is working and the second condenser 11 is not working. Close one outlet of evaporator control valve 14 to open only the evaporator, that is, the first evaporator 2 is working and the second evaporator 3 is not working.
[0044] 3. In low-temperature environments, to increase system load, operate in dual-evaporator mode: Open both outlets of evaporator control valve 14 to keep both evaporators running, i.e., the first evaporator 2 and the second evaporator 3 operate simultaneously. Close one outlet of condenser control valve 12 to keep only one condenser running, i.e., the first condenser 10 operates while the second condenser 11 does not. After passing through the dual evaporators, the refrigerant can exchange more heat with the air, increasing the evaporation load and raising the evaporation temperature. Meanwhile, a single condenser reduces condensation heat loss, increases system pressure, and further raises the evaporation temperature, thus ensuring the dehumidifier operates normally in low-temperature environments (down to 5°C).
[0045] 4. In high-temperature environments, to increase system heat dissipation, the system operates in dual-condenser mode: Both outlets of the condenser control valve 12 are opened, meaning both condensers (first condenser 10 and second condenser 11) operate simultaneously. One outlet of the evaporator control valve 14 is closed, meaning only one evaporator (first evaporator 2) operates while the second evaporator (second evaporator 3) remains closed. In high-temperature environments, dual condensers significantly increase heat dissipation, reducing system pressure and compressor discharge temperature. A single evaporator reduces the amount of heat entering the system, thus ensuring the dehumidifier operates normally in high-temperature environments (up to 40-42℃).
[0046] All components of this utility model can be purchased externally.
[0047] Example 2
[0048] Since the first condenser and the first evaporator are always open when operating in normal temperature, low temperature, and high temperature environments, while the second condenser and the second evaporator are only open depending on the operating conditions, Example 2 is improved as follows compared to Example 1:
[0049] like Figure 3 As shown, the compressor is connected to the first condenser and the second condenser through an exhaust pipe and two exhaust branch pipes respectively. A condenser control valve is installed on the exhaust branch pipe connected to the second condenser.
[0050] like Figure 3 As shown, the condenser is connected to the first evaporator and the second evaporator respectively through a drain pipe and two throttling elements. An evaporator control valve is installed at the inlet of the throttling element connected to the second evaporator.
[0051] When operating in dual evaporator mode in a low-temperature environment: when the evaporator control valve is opened, the first and second evaporators work simultaneously; when the condenser control valve is closed, the first condenser works and the second condenser does not work.
[0052] When operating in dual-condenser mode in a high-temperature environment: close the evaporator control valve 14, the first evaporator operates, and the second evaporator does not operate; open the condenser control valve, and the first and second condensers operate simultaneously.
[0053] The condenser control valve and the evaporator control valve are two-way solenoid valves.
[0054] The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.
Claims
1. A dehumidifier for multi-condition applications, comprising a chassis, a controller, a compressor (8), an evaporator, a condenser, a throttling element (15), a drip tray (4), a water tank (7), and a fan (13); wherein the compressor, condenser, throttling element, and evaporator are sequentially connected by pipelines to form a channel for refrigerant circulation; characterized in that: The condenser includes a first condenser (10) and a second condenser (11) connected in parallel; a condenser control valve (12) is provided between the compressor and the condenser for controlling whether the condenser is open or closed. The evaporator includes a first evaporator (2) and a second evaporator (3) connected in parallel; an evaporator control valve (14) for controlling the evaporator to open or close is provided between the condenser and the evaporator; both the first evaporator (2) and the second evaporator (3) are equipped with throttling elements; The controller is electrically connected to the condenser control valve and the evaporator control valve.
2. A dehumidifier for multi-condition applications according to claim 1, characterized in that: The compressor is connected to the condenser control valve through the exhaust pipe (9), and the condenser control valve is connected to the first condenser and the second condenser through two exhaust branch pipes (16); the condenser is connected to the evaporator control valve through the drain pipe (17), and the evaporator control valve is connected to the first evaporator and the second evaporator through two throttling elements; both the condenser control valve and the evaporator control valve are three-way solenoid valves.
3. A dehumidifier for multi-condition applications according to claim 1, characterized in that: The compressor is connected to the first condenser and the second condenser via an exhaust pipe and two exhaust branch pipes, one of which is equipped with a condenser control valve; the condenser is connected to the first evaporator and the second evaporator via a drain pipe and two throttling elements, one of which is equipped with an evaporator control valve; both the condenser control valve and the evaporator control valve are two-way solenoid valves.
4. A dehumidifier for multi-condition applications according to claim 2 or 3, characterized in that: The first evaporator, the second evaporator, the first condenser, and the second condenser are arranged sequentially along the airflow direction.
5. A dehumidifier for multi-condition applications according to claim 4, characterized in that: The throttling element is a throttling tube.
6. A dehumidifier for multi-condition applications according to claim 5, characterized in that: The water receiving tray is located below the evaporator; the water receiving tray is connected to the water tank through the drain pipe (6).
7. A dehumidifier for multi-condition applications according to claim 6, characterized in that: The evaporator, condenser, and fan are arranged sequentially between the air inlet and air outlet of the casing.
8. A dehumidifier for multi-condition applications according to claim 7, characterized in that: A filter screen (1) is also provided between the air inlet of the chassis and the evaporator.