CN219494265U - Efficient heat exchanger structure for dehumidifier - Google Patents

Abstract

The utility model relates to a dehumidifier. The purpose is to provide a dehumidifier is with high-efficient heat exchanger structure to improve the energy efficiency of dehumidifier. The technical proposal is as follows: a high-efficiency heat exchanger structure for a dehumidifier comprises a condenser and an evaporator; the method is characterized in that: the condenser comprises a main condenser and a supercooling condenser; the evaporator, the supercooling condenser and the main condenser are sequentially arranged along the airflow direction; the condenser and the evaporator are arranged in a high-low mode, and a supercooling air inlet communicated with the upper part of the supercooling condenser is formed above the evaporator.

Description

Efficient heat exchanger structure for dehumidifier

Technical Field

The utility model relates to a dehumidifier, in particular to a high-efficiency heat exchanger structure for a dehumidifier.

Background

The dehumidifier also becomes a dehumidifier and a dehumidifier, and consists of a compressor, a heat exchanger, a throttling device, a water pan, a fan, a controller, a shell and the like, and the working principle of the dehumidifier is as follows: the fan pumps the moist air into the machine for heat exchange, at the moment, the moisture in the air condenses into water drops which flow into the water receiving disc, the treated dry air is discharged out of the machine, and the indoor humidity is reduced by circulation.

Today, where energy is increasingly scarce, it is a constant topic to be able to make maximum use of energy to increase efficiency. In the existing dehumidifier, the heat exchange structure of the refrigeration system does not reach the maximum heat exchange efficiency, so that the energy efficiency of the system is not high.

For example, patent application of ultra-high energy efficiency dehumidifier, which is a part of condenser and the upper part of evaporator is also used as part of condenser, is filed by Shanghai Bosun thermal energy science and technology Co., ltd.2022, 16 th year 06, and has application number 202210676911.0 to the national intellectual property agency, and is used for cutting off the connection between the cooling section and the fin thermal bridge of the condensing section, thereby improving the condensing efficiency. But also compresses the height of the supercooling condenser, so that the supercooling condenser is shorter, or the whole machine is bigger when enough length is needed; and the cooling efficiency of the supercooling condenser is low, the overall efficiency of the dehumidifier is low, and the cost is increased.

Disclosure of Invention

The utility model aims to overcome the defects in the background technology and provide a high-efficiency heat exchanger structure for a dehumidifier so as to improve the energy efficiency of the dehumidifier.

The technical scheme of the utility model is as follows:

a high-efficiency heat exchanger structure for a dehumidifier comprises a condenser and an evaporator; the method is characterized in that: the condenser comprises a main condenser and a supercooling condenser; the evaporator, the supercooling condenser and the main condenser are sequentially arranged along the airflow direction; the condenser and the evaporator are arranged in a high-low mode, and a supercooling air inlet communicated with the upper part of the supercooling condenser is formed above the evaporator.

The height of the evaporator is lower than that of the condenser; the height of the evaporator is 60% -95% of the height of the condenser.

The fins of the main condenser are arranged independently of the fins of the subcooling condenser.

The side plates of the main condenser are connected with the side plates of the supercooling condenser.

The supercooling condenser is a series or parallel type finned tube.

The beneficial effects of the utility model are as follows:

1. the height of the condenser is increased, the evaporator and the condenser are designed to be high and low, and the condenser is high, so that the condenser can obtain more air quantity for heat dissipation, and the condensation efficiency is improved;

2. the condenser is divided into a main condenser and a supercooling condenser, the condensing pressure of the main condenser is fixed, so that the condensing temperature is determined, and the independent supercooling condenser is used for supercooling, so that the supercooling temperature is far lower than the condensing temperature, and the larger refrigerating capacity is obtained;

3. the supercooling condenser is designed into an independent row, is consistent with the main condenser in height, and effectively increases the length of the supercooling condenser, so that the refrigerant liquid is continuously cooled, and larger refrigerating capacity is obtained;

4. the supercooling condenser fins are mutually independent from the main condenser fins, so that heat of the main condenser is prevented from being transferred to the supercooling condenser, and the supercooling degree is prevented from being influenced.

Drawings

Fig. 1 is a schematic diagram of the front view structure of the present utility model.

FIG. 2 is a schematic view of a conventional dehumidifier

Fig. 3 is a supercooling cycle pressure enthalpy diagram.

Reference numerals: the device comprises an air inlet 1, a filter screen 2, an evaporator 3, a condenser 4, an air outlet 5, a fan 6, a compressor 7, a water tank 9, a drain pipe 10, a water receiving disc 11, a throttling device 12, a main condenser 21, a supercooling condenser 22 and a supercooling air inlet 23.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The existing dehumidifier is shown in fig. 2, wherein a filter screen 2, an evaporator 3, a condenser 4 and a fan 6 are sequentially arranged between an air inlet 1 and an air outlet 5; the air suction inlet of the fan is tightly attached to the condenser, and the air outlet is tightly attached to the air outlet of the fan; the lower part of the evaporator is provided with a water receiving disc 11 which is connected with the water tank 9 through a drain pipe 10; the evaporating temperature sensor is arranged on the throttling device 12, and the temperature and humidity sensor is arranged between the air inlet and the evaporator.

The refrigerating system of the dehumidifier comprises a compressor 7, an evaporator 3, a condenser 4 and a throttling device 12; the exhaust port of the compressor is connected with the inlet of the condenser through an exhaust pipe, the outlet of the condenser is connected with the inlet of the evaporator through a throttling device, and the outlet of the evaporator returns to the air suction port of the compressor through an air return pipe, so that a circulating channel is formed.

During the whole cycle, the method comprises the following steps: the compressor plays roles of compressing and delivering refrigerant and causing low pressure in the evaporator and high pressure in the condenser, and is the heart of the whole system; the throttling device plays a role in throttling and reducing pressure on the refrigerant and regulates the flow of the refrigerant entering the evaporator; the evaporator is the device for causing the air to be condensed, the refrigerant absorbs the heat of the air in the evaporator, and the air is condensed when being cooled, so that the aim of dehumidification is fulfilled; the condenser is a heat output device, and heat extracted from the evaporator and converted from work consumed by the compressor are taken away by air through the condenser.

The liquid subcooling circuit pressure enthalpy diagram of a refrigeration system is shown in fig. 3, where a-b-c-d-a represents the theoretical circuit and a-b-c ' -d ' -a represents the subcooling circuit and where c-c ' represents the liquid refrigerant subcooling process. As can be seen from the figure, the refrigerating capacity per unit mass of the liquid supercooling cycle is increased by h d-h d'. The utility model is based on fig. 2 as a theoretical basis.

As shown in fig. 1, the efficient heat exchanger structure for the dehumidifier comprises a condenser and an evaporator 3. The condenser includes a main condenser 21 and a supercooling condenser 22. The evaporator, the supercooling condenser, and the main condenser are arranged in this order along the air flow direction (arrow direction in the figure).

The main condenser, the supercooling condenser and the evaporator are sequentially communicated through pipelines, and a throttling device is arranged between the supercooling condenser and the evaporator.

The utility model increases the height of the condenser and adds a supercooling condenser between the main condenser and the evaporator.

The condenser and the evaporator are arranged in a high-low mode, and the height of the evaporator is lower than that of the condenser.

The bottoms of the evaporator, the supercooling condenser and the main condenser are positioned at the same horizontal position, the top of the supercooling condenser and the top of the main condenser are positioned at the same horizontal position, the top of the evaporator is lower than the top of the supercooling condenser and the top of the main condenser, therefore, a certain space is formed above the evaporator and is used as a supercooling air inlet 23, and the supercooling air inlet is communicated with the upper part of the supercooling condenser, so that the condenser can obtain more air quantity for heat dissipation, and the condensation efficiency is improved.

The height of the evaporator is 60% -95% of the height of the condenser, and the evaporator is specifically determined according to the requirement. The height of the supercooling air inlet is 5-40% of the height of the condenser.

The fins of the main condenser and the fins of the supercooling condenser are independently arranged, so that heat of the main condenser is prevented from being transferred to the supercooling condenser, the supercooling degree is influenced, the length of the supercooling condenser can be effectively increased, the refrigerant liquid is continuously cooled, and larger refrigerating capacity is obtained.

The side plates of the main condenser are connected with the side plates of the supercooling condenser (fixed by adopting the same side plates).

The main condenser, subcooling condenser, evaporator are maintained at a spacing that is generally a multiple of the individual hole site distance.

The supercooling condenser adopts a series type finned tube (up and down in series) or a parallel type finned tube (up and down in parallel). The upper part of the supercooling condenser is cooled by the external air flow passing through the supercooling air inlet, and the lower part of the supercooling condenser is cooled by the air flow passing through the evaporator.

And starting the dehumidifier under the rated working condition of 27 ℃ and 60%RH, and entering an operating state. After the exhaust gas of the compressor enters the main condenser, the refrigerant is liquefied into liquid, and the outlet temperature of the refrigerant to the main condenser is about 40 ℃, and then the refrigerant enters the supercooling condenser. Because the ambient temperature is 27 ℃, the temperature of the air flow passing through the evaporator is 15 ℃, and the ambient temperature is slightly higher, but is far lower than the temperature of the outlet of the main condenser, the air flow of the supercooling air inlet cools the refrigerant liquid at the upper part of the supercooling condenser (at least 3 ℃ is reduced), the temperature of the liquid from the refrigerant to the outlet of the supercooling condenser is about 20 ℃, and the great supercooling degree is obtained, so that the cooling capacity of the system is increased, the dehumidifying capacity is increased, and the energy efficiency is improved.

Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Claims (5)

1. The high-efficiency heat exchanger structure for the dehumidifier comprises a condenser and an evaporator (3); the method is characterized in that: the condenser comprises a main condenser (21) and a supercooling condenser (22); the evaporator, the supercooling condenser and the main condenser are sequentially arranged along the airflow direction; the condenser and the evaporator are arranged in a high-low mode, and a supercooling air inlet (23) communicated with the upper part of the supercooling condenser is formed above the evaporator.

2. The efficient heat exchanger structure for a dehumidifier of claim 1, wherein: the height of the evaporator is lower than that of the condenser; the height of the evaporator is 60% -95% of the height of the condenser.

3. The efficient heat exchanger structure for a dehumidifier of claim 2, wherein: the fins of the main condenser are arranged independently of the fins of the subcooling condenser.

4. A high efficiency heat exchanger structure for a dehumidifier as set forth in claim 3, wherein: the side plates of the main condenser are connected with the side plates of the supercooling condenser.

5. The efficient heat exchanger structure for a dehumidifier of claim 4, wherein: the supercooling condenser is a series or parallel type finned tube.