Temperature and humidity adjusting type dehumidifier

Abstract

The utility model relates to a temperature and humidity adjusting type dehumidifier which comprises a machine body, a cooling and dehumidifying system and a temperature and humidity adjusting system are arranged in the machine body, the cooling and dehumidifying system comprises an evaporator, an outlet of the evaporator is connected with a compressor, an outlet of the compressor is connected with a condenser, and the condenser is connected with a liquid storage device. The liquid storage device is connected with the evaporator through an electric ball valve and a thermostatic expansion valve in sequence; the temperature and humidity adjusting and controlling system comprises a subcooler, the inlet amount of the subcooler is controlled by the opening and closing degree of an electric ball valve, the air outlet temperature and humidity of a dehumidifier are controlled by adjusting the mass flow of the subcooler, the refrigerating capacity of the system is increased, meanwhile, the dehumidification efficiency is improved, the reheating compensation amount of a heater is reduced, energy is saved, and consumption is reduced. The method is suitable for industrial production and has very high practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of air dehumidification, and in particular relates to a temperature-adjusting and humidity-controlling dehumidifier. Background Art

[0002] The dehumidification devices commonly used in the prior art are rotary dehumidifiers and compression dehumidifiers. The main components of the compression dehumidifier are a compressor, an evaporator, a condenser, a capillary tube, a copper tube connecting the components, and an air supply system. The compression dehumidifier reduces the temperature of the ambient air to the dew point temperature through the phase change of the refrigerant to form condensation. When the ambient temperature is relatively low (less than 15-16 degrees Celsius, the temperature on the evaporator will be lower than 0 degrees Celsius. At this time, the ambient air will directly frost when entering the evaporator. When the compression dehumidifier continues to run, the frost on the evaporator will become thicker and thicker, causing the dehumidifier to start the defrosting operation. The commonly used defrosting operation is to stop the compressor and wait for the frost to turn into water before the compressor can be started again. In addition, in a low-temperature environment, due to the defrosting of the compression dehumidifier, there is a long time of idling defrosting. Idle operation does not dehumidify. The moisture that the compression dehumidifier can remove is only a very small part of the standard environmental conditions (26.7°, 60%). Under the working conditions of 26.7°, 60%, the dehumidification capacity of 12L is only 1.5L in a low-temperature environment (10°, 60%). Therefore, the dehumidification capacity of the compression dehumidifier is reduced at low temperatures, which directly leads to low working efficiency of the compression dehumidifier. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the dehumidification capacity of the existing compression dehumidifier is reduced at low temperatures, which directly leads to low working efficiency of the compression dehumidifier. In order to improve its shortcomings, the utility model provides a temperature-adjustable and humidity-controlling dehumidifier.

[0004] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0005] A temperature-adjusting and humidity-controlling dehumidifier comprises a body, in which a cooling and dehumidifying system and a temperature-adjusting and humidity-controlling system are arranged.

[0006] Cooling and dehumidification system: including an evaporator, the outlet of the evaporator is connected to a compressor, the outlet of the compressor is connected to a condenser, the condenser is connected to a liquid reservoir, and the liquid reservoir is connected to the evaporator via an electric ball valve and a thermal expansion valve in sequence;

[0007] Temperature and humidity control system: includes a subcooler, the inlet of the subcooler is controlled by the opening and closing size of the electric ball valve.

[0008] As a preferred solution, a low pressure gauge and a needle valve are provided between the compressor and the evaporator.

[0009] As a preferred solution, a high pressure gauge and a single pressure controller are provided between the compressor and the condenser.

[0010] As a preferred solution, a drying filter and a ball valve are provided between the evaporator and the liquid storage tank.

[0011] As a preferred solution, the compressor is connected to a dual-pressure controller.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by adjusting the mass flow rate of the subcooler and controlling the air outlet temperature and humidity of the dehumidifier, this method increases the refrigeration capacity of the system while improving the dehumidification efficiency, reduces the reheat compensation amount of the heater, saves energy and reduces consumption, is suitable for industrial production, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1 compressor, 2 condenser, 3 liquid receiver, 4 ball valve, 5 dry filter, 6 electric ball valve,

[0015] 7 thermal expansion valve, 8 evaporator, 9 subcooler, 10 low pressure gauge, 11 needle valve, 12 dual pressure controller, 13 high pressure gauge, 14 single pressure controller. DETAILED DESCRIPTION

[0016] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, a temperature-adjustable and humidity-controlling dehumidifier includes a body, in which a cooling and dehumidifying system and a temperature-adjustable and humidity-controlling system are arranged.

[0018] Cooling and dehumidifying system: comprising an evaporator 8, the outlet of the evaporator 8 is connected to a compressor 1, the outlet of the compressor 1 is connected to a condenser 2, the condenser 2 is connected to a liquid reservoir 3, and the liquid reservoir 3 is connected to the evaporator 8 via an electric ball valve 6 and a thermal expansion valve 7 in sequence;

[0019] The temperature and humidity control system includes a subcooler 9, and the inlet of the subcooler 9 is controlled by the opening and closing size of the electric ball valve 6.

[0020] A low pressure gauge 10 and a needle valve 11 are provided between the compressor 1 and the evaporator 8. A high pressure gauge 13 and a single pressure controller 14 are provided between the compressor 1 and the condenser 2. A drying filter 5 and a ball valve 4 are provided between the evaporator 8 and the liquid reservoir 3. The compressor 1 is connected to a dual pressure controller 12.

[0021] When working, it is divided into three working modes: cooling and dehumidification mode, temperature adjustment and dehumidification mode, and fast dehumidification mode.

[0022] Cooling and dehumidification mode: low-temperature and low-pressure refrigerant vapor is compressed by compressor 1 into high-temperature and high-pressure refrigerant gas and discharged into condenser 2. In condenser 2, it exchanges heat with air and is condensed into high-pressure and medium-temperature refrigerant liquid. The liquid flows through liquid storage 3, ball valve 4, filter dryer 5, electric ball valve 6 and then enters thermal expansion valve 7. After throttling and reducing pressure by thermal expansion valve 7, part of the liquid flashes into gas, becomes a low-temperature and low-pressure vapor-liquid mixture and enters evaporator 8. After absorbing the heat of the treated air in evaporator 8, it becomes a low-pressure superheated gas, which is then sucked in and compressed by compressor 1, and the cycle continues. The treated air transfers heat to the refrigerant through evaporator 8, and the temperature is reduced. Since the surface temperature of evaporator 8 is lower than the dew point temperature of the treated air, water is analyzed on the surface of evaporator 8 when the air flows through the surface of evaporator 8, achieving the purpose of cooling and dehumidification. In this process, since there is no refrigerant in the subcooler 9, it is in a non-working state, so the temperature of the air does not change when passing through the subcooler 9.

[0023] Temperature control and dehumidification mode: low-temperature and low-pressure superheated refrigerant vapor is compressed by compressor 1 into high-temperature and high-pressure refrigerant gas and discharged into condenser 2, where it exchanges heat with air and is condensed into high-pressure and medium-temperature refrigerant liquid. The liquid flows through liquid storage tank 3, ball valve 4, and drying filter 5 and is divided into two paths, one path enters electric ball valve 6 (electric ball valve 6 is partially open in proportion), and the other path enters subcooler 9, where it exchanges heat with the treated air after being cooled and dehumidified and is cooled into a supercooled liquid. This part of the refrigerant is mixed with the refrigerant after passing through electric ball valve 6 and enters thermal expansion valve 7 together. After throttling and pressure reduction by thermal expansion valve 7, part of the liquid flashes into gas, becomes a low-temperature and low-pressure vapor-liquid mixture, and then enters evaporator 8. After absorbing the heat of the treated air in evaporator 8, it becomes a low-pressure superheated gas, which is then sucked in and compressed by compressor 1, and the cycle continues. The treated air transfers heat to the refrigerant through the evaporator 8, and the temperature is lowered. Since the surface temperature of the evaporator 8 is lower than the dew point temperature of the treated air, water is separated out on the surface of the evaporator 8 when the air flows through the surface of the evaporator 8. Since the electric ball valve 6 is opened proportionally, part of the refrigerant passes through the subcooler 9, so that the air is heated and the temperature is increased. The degree of temperature increase is adjusted by the opening of the electric ball valve 6, so the purpose of heating and dehumidification is achieved.

[0024] Rapid dehumidification mode: low-temperature and low-pressure superheated refrigerant vapor is compressed by compressor 1 into high-temperature and high-pressure refrigerant gas and discharged into condenser 2, where it exchanges heat with air and is condensed into high-pressure and medium-temperature refrigerant liquid. The liquid flows through liquid storage tank 3, ball valve 4, and filter dryer 5. At this time, electric ball valve 6 is completely closed, and the refrigerant liquid completely enters subcooler 9, where it exchanges heat with the treated air after being cooled and dehumidified, and enters thermal expansion valve 7 after being cooled into supercooled liquid. After throttling and reducing pressure of thermal expansion valve 7, part of the liquid flashes into gas, becomes a low-temperature and low-pressure vapor-liquid mixture, and then enters evaporator 8. After absorbing the heat of the treated air in evaporator 8, it becomes a low-pressure superheated gas, which is then sucked in and compressed by compressor 1, and the cycle continues. Since the liquid entering the thermal expansion valve 7 is in a supercooled state, the flash gas is reduced after throttling and pressure reduction by the thermal expansion valve 7, thereby increasing the refrigeration capacity per unit mass. The refrigeration capacity is also increased while the refrigerant circulation volume is the same. The increase in refrigeration capacity allows the treated air to be cooled to a lower temperature, and more water is precipitated on the surface of the evaporator 8, thereby achieving the purpose of rapid cooling and dehumidification.

[0025] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A temperature and humidity control dehumidifier, characterized in that: It includes an organism, which is equipped with a cooling and dehumidification system and a temperature and humidity control system. The cooling and dehumidifying system comprises an evaporator (8), the outlet of the evaporator (8) is connected to a compressor (1), the outlet of the compressor (1) is connected to a condenser (2), the condenser (2) is connected to a liquid storage device (3), and the liquid storage device (3) is connected to the evaporator (8) via an electric ball valve (6) and a thermal expansion valve (7) in sequence; The temperature and humidity control system comprises a subcooler (9), wherein the air intake of the subcooler (9) is controlled by the opening and closing size of the electric ball valve (6).

2. A temperature and humidity control dehumidifier according to claim 1, characterized in that: A low pressure gauge (10) and a needle valve (11) are provided between the compressor (1) and the evaporator (8).

3. A temperature and humidity control dehumidifier according to claim 1, characterized in that: A high pressure gauge (13) and a single pressure controller (14) are provided between the compressor (1) and the condenser (2).

4. A temperature-adjustable and humidity-controlling dehumidifier according to claim 1, characterized in that: A drying filter (5) and a ball valve (4) are arranged between the evaporator (8) and the liquid storage tank (3).

5. A temperature and humidity control dehumidifier according to any one of claims 1 to 4, characterized in that: The compressor (1) is connected to a dual-pressure controller (12).

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