CN216244668U

CN216244668U - Temperature-adjusting dehumidifier with two heat exchangers

Info

Publication number: CN216244668U
Application number: CN202122382721.1U
Authority: CN
Inventors: 李文涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-08
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a temperature-adjusting dehumidifier with two heat exchangers, which comprises a compressor, a condenser, an expansion valve, an evaporator, a fan and a temperature-adjusting device; the condenser is a three-medium heat exchanger with a first medium channel and a second medium channel, the fan, the expansion valve, the evaporator, the compressor and the first medium channel of the condenser form a conventional gas cooling, dehumidifying, condensing and reheating structure, and the second medium channel of the condenser is connected with the temperature adjusting device to form a temperature adjusting structure; the utility model adopts two heat exchangers to realize the functions of temperature adjustment and dehumidification, thereby reducing the cost and improving the dehumidification efficiency.

Description

Temperature-adjusting dehumidifier with two heat exchangers

Technical Field

The utility model belongs to the field of air conditioners, and particularly relates to a temperature-adjusting dehumidifier with two heat exchangers.

Background

The existing dehumidification methods comprise cold water spray dehumidification, liquid and solid desiccant dehumidification, cooling dehumidification and the like; the most conventional dehumidifier adopts a mode of a single evaporator and a single condenser, after the evaporator cools and dehumidifies to condense water vapor, the processed air is heated by the condenser to obtain dry air; because the dehumidifier with the mode can only realize temperature rise dehumidification, and the functions of temperature reduction dehumidification and isothermal dehumidification can be needed in many times, the temperature-adjusting dehumidifier with the three heat exchangers is widely used in the market to meet the requirements of the environment on the air temperature and humidity.

In a conventional temperature-adjusting dehumidifier, such as the structure disclosed in CN201822100760.6, the opening or closing of the first loop is controlled by the switch cooperation of the first electromagnetic valve and the second electromagnetic valve, the first loop is arranged indoors, the indoor ambient temperature is raised by using the heat generated by the first condenser when the dehumidifier works, the indoor ambient temperature can also be raised while dehumidifying, and the dehumidifier utilizes the waste heat to raise the indoor temperature, so that the energy consumption can be effectively reduced; however, the temperature-adjusting dehumidifier adopts three heat exchangers, and the condensers are all air-cooled condensers, and in the scene that the distance between the external condenser and the dehumidifier of the temperature-adjusting dehumidifier with the structure is long, the refrigerant filling amount is large, and the pipelines are too long, so that the safety of the system is reduced and the performance is reduced.

The temperature-adjusting dehumidifier adopting the water-cooling condenser structure, as shown in CN201320815243.1, automatically controls the loading and unloading of the variable-frequency compressor by detecting the dew-point temperature at the outlet of the evaporator of the temperature-adjusting dehumidifier, and simultaneously automatically adjusts the opening degree of the electric water quantity adjusting valve, the opening degree of the electric three-way flow adjusting valve and the opening of the PTC electric heater according to the detected outlet air temperature, so that the temperature-adjusting dehumidifier can work under any working condition, the relative humidity and the temperature of air can be accurately controlled, and the temperature-adjusting blind area of the temperature-adjusting dehumidifier is avoided; compared with an air-cooled temperature-adjusting dehumidifier, the dehumidifier can effectively reduce the cost of copper pipes and the floor area of the dehumidifier, but the temperature-adjusting dehumidifier with the structure still has the following defects: (1) if the external condenser and the internal condenser of the dehumidifier are in a parallel connection structure, the flow distribution of the refrigerant between the two condensers needs to be changed through a control valve, and the regulation and control are complex; (2) the condenser outside the dehumidifier and the condenser inside the dehumidifier are connected in series, so that the flow resistance of the refrigerant can be increased; (3) the structure of the three heat exchangers is relatively complex, and the cost of the heat exchangers is high.

At present, three-medium heat exchangers capable of realizing mutual heat exchange between every two three mediums or simultaneous heat exchange of one medium for the other two mediums appear, for example, the heat exchanger disclosed in the chinese patent application CN201910881430.1, if the three-medium heat exchanger is adopted to replace a condenser and an external water-cooled condenser in a temperature-adjusting dehumidifier, the structure of the temperature-adjusting dehumidifier can be simplified, that is, the external condensation heat exchanger is not required to be arranged, a refrigerant flow control device (such as a temperature-adjusting dehumidifier with a parallel structure) is not required to be arranged, or the refrigerant flow resistance (compared with a temperature-adjusting dehumidifier with a series structure) is further reduced, thereby reducing the system complexity and cost of the temperature-adjusting dehumidifier.

The utility model aims to solve the problems that the existing water-cooling temperature-adjusting dehumidifier needs three heat exchangers, has a complex structure and higher cost, has larger flow resistance when adopting a series structure with condensers in the dehumidifier, and needs to be provided with a control valve for regulating and controlling the flow distribution of a refrigerant between the two condensers when adopting a parallel structure.

In order to solve the technical problem, the utility model provides a two-heat-exchanger temperature-regulating dehumidifier which comprises a fan, an evaporator, a condenser and a temperature-regulating device, wherein the condenser is a three-medium heat exchanger with a first medium channel and a second medium channel, and a fluid medium of the first medium channel, a fluid medium of the second medium channel and a dehumidified gas medium can exchange heat in pairs; the first medium channel is a high-temperature condensing medium channel; the fan, the evaporator and a first medium channel of the condenser form a conventional gas cooling, dehumidifying, condensing and reheating structure, and the second medium channel is connected with a temperature adjusting device to form a temperature adjusting loop; the fan drives the dehumidified gas to enter the evaporator for cooling and dehumidifying, and then the dehumidified gas is exhausted after being reheated and temperature-adjusted by the condenser.

The temperature-adjusting dehumidifier with the two heat exchangers further comprises a compressor and an expansion valve, wherein the evaporator, the compressor, the first medium channel and the expansion valve are sequentially connected to form a refrigeration cycle loop.

The temperature-adjusting dehumidifier with the two heat exchangers also comprises a cooling device which is connected in series on the temperature-adjusting loop, wherein the cooling device is one or a combination of a cooling tower, an air cooler, a ground heat exchanger and a natural cold source.

The temperature adjusting device of the temperature adjusting dehumidifier with the two heat exchangers further comprises a water pump or a flow adjusting valve, and the water pump or the flow adjusting valve is used for adjusting the flow of a fluid medium of the temperature adjusting loop.

The temperature adjusting dehumidifier with the two heat exchangers further comprises a heat storage water tank which supplies domestic hot water to the outside through a domestic hot water loop under the working condition that domestic hot water needs to be prepared.

The temperature-adjusting dehumidifier with the two heat exchangers can also adjust the temperature of air by using an external cooling device when no dehumidification is required indoors, so that a compressor is not started or is started less, and the energy efficiency of the temperature-adjusting dehumidifier is improved.

Has the advantages that: the dehumidifier adopts the three-medium heat exchanger capable of realizing heat exchange of three mediums in pairs, and introduces an external cold source into the circulating heat exchange, so that the resistance when the heat exchangers are connected in series is reduced, the operation difficulty and the unreliability of controlling the flow distribution of the refrigerant by operating the electromagnetic valve for the parallel heat exchangers are also reduced, the temperature-adjusting dehumidifier has a simple structure and low cost, and the two mediums exchange heat with the dehumidified air together, so that the efficiency of the condenser is improved, and the dehumidification performance is improved.

In addition, this utility model still can realize utilizing external cooling device to adjust the temperature to the air when not having the dehumidification requirement to show improvement system efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a dehumidifier according to a first embodiment of the present invention.

Fig. 2 is a schematic view of the dehumidifier recovering domestic hot water according to the second embodiment of the present invention.

Reference numerals: 1. a condenser; 2. An evaporator; 3. a compressor; 4. an expansion valve; 5. a fan; 121. A flow regulating valve; 122. a cooling water pump; 123. a cooling device; 124. a heat storage water tank; 11. a first medium passage; 12. a second media path.

The specific implementation mode is as follows: in order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly below with reference to the accompanying drawings of the present invention.

It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the first embodiment of the two-heat-exchanger temperature-regulating dehumidifier of the present invention provides a two-heat-exchanger temperature-regulating dehumidifier, which includes a condenser 1, an evaporator 2, a compressor 3, an expansion valve 4, a fan 5 and a cooling device 123; the condenser is a three-medium heat exchanger with a first medium channel 11 and a second medium channel 12, and the first medium channel 11, the second medium channel 12 and the treated external air can exchange heat pairwise or the two media can exchange heat with a third medium; the first medium channel 11, the expansion valve 4, the evaporator 2 and the compressor 3 form a refrigeration cycle; the second medium passage 12, the cooling device 123 and the cooling water pump 122 form a cooling circuit, and the cooling circuit may further include a flow rate regulating valve 121; the evaporator 2, the fan 5 and the condenser 1 form an air treatment channel, and air to be treated firstly passes through the evaporator 2 and then is discharged through the condenser 1 under the action of the fan 5.

When the temperature and the humidity are required to be adjusted and dehumidified in the air treatment, the air to be treated is cooled and dehumidified in the evaporator 2, and then enters the condenser 1 of the three-medium heat exchanger.

Because the water temperature of the cooling device 123 is determined by the environmental parameters, the speed or frequency of the cooling water pump 122 can be adjusted, or the flow in the second medium channel 12 can be adjusted and controlled by the flow adjusting valve 121, the heat exchange amount of the cooling circuit to the condenser 1 is adjusted, the heat exchange amount of the refrigerant to the air in the first medium channel 11 is changed, and the outlet air temperature is changed.

When the air only needs to be cooled and does not need to be dehumidified, the evaporation temperature in the refrigeration cycle does not need to be lower than the dew point temperature of the air, the air to be processed is cooled at the evaporator 2, meanwhile, the speed or frequency of the air can be adjusted through the cooling water pump 122 or the flow in the second medium channel 12 can be adjusted and controlled through the flow adjusting valve 121, and the first medium channel 11 is cooled by water, so that the temperature of the air cooled by the evaporator 2 is not increased or is only increased very little at the condenser 1, and the purposes of only cooling and not dehumidifying are achieved.

When the air is not dehumidified completely and the cooling requirement is small, the compressor 3 can be closed, the refrigeration cycle is stopped, only the cooling loop formed by the second medium channel 12, the cooling water pump 122 and the cooling device 123 and the air treatment passage generated by the fan 5 are reserved, and the air to be treated is cooled by cooling water, so that the energy consumption of the device is reduced, and the system efficiency is improved.

Referring to fig. 2, compared with the first embodiment, the second embodiment of the temperature-adjusting dehumidifier with two heat exchangers provided by the utility model is additionally provided with a heat storage water tank 124 and a cooling device 123 which are correspondingly moved. When domestic hot water is required to be produced, the condensation heat discharged from the condenser 1 through the second medium passage 12 is preferentially used for heating the water in the heat storage water tank 124, and the residual heat is discharged through the cooling device 123.

Claims

1. A temperature-adjusting dehumidifier with two heat exchangers comprises a fan, an evaporator, a condenser and a temperature-adjusting device, and is characterized in that the condenser is a three-medium heat exchanger with a first medium channel and a second medium channel, and a fluid medium of the first medium channel, a fluid medium of the second medium channel and a dehumidified gas medium can exchange heat in pairs; the first medium channel is a high-temperature condensing medium channel; the fan, the evaporator and a first medium channel of the condenser form a conventional gas cooling, dehumidifying, condensing and reheating structure, and the second medium channel is connected with a temperature adjusting device to form a temperature adjusting loop; the fan drives the dehumidified gas to enter the evaporator for cooling and dehumidifying, and then the dehumidified gas is exhausted after being reheated and temperature-adjusted by the condenser.

2. The two-heat exchanger temperature-regulating dehumidifier of claim 1 further comprising a compressor and an expansion valve, wherein the evaporator, the compressor, the first medium passage and the expansion valve are connected in sequence to form a refrigeration cycle loop.

3. A two heat exchanger temperature and humidity conditioning dehumidifier as claimed in claim 1 further comprising a cooling device connected in series to the temperature conditioning circuit, the cooling device being one or more of a cooling tower, an air cooler, a ground heat exchanger, and a natural cold source.

4. A two heat exchanger temperature and humidity conditioning machine as claimed in any one of claims 1 to 3 wherein the temperature conditioning means further includes a water pump or flow regulating valve for regulating the flow of the temperature conditioning circuit fluid medium.

5. A two-heat-exchanger temperature-adjusting dehumidifier as claimed in any one of claims 1 to 3, wherein the temperature-adjusting means further comprises a heat-storage water tank for supplying domestic hot water to the outside through a domestic hot water circuit.