WO2016112788A1

WO2016112788A1 - Environmentally-friendly and energy-saving parallel equipment for regulating temperature and humidity

Info

Publication number: WO2016112788A1
Application number: PCT/CN2016/000023
Authority: WO
Inventors: 陈志刚; 郑礼刚; 徐育彬; 黄俊明; 陈昌宇; 关锡阳; 陈明海; 张运添
Original assignee: 广州市顺景制冷设备有限公司
Priority date: 2015-01-15
Filing date: 2016-01-14
Publication date: 2016-07-21
Also published as: US20170307235A1; CN204460550U

Abstract

A parallel temperature and humidity regulating equipment comprises a compressor unit, a condenser (3), an evaporation coil (13) and a secondary heat exchange coil (14) connected through a pipeline. The evaporation coil (13) and the secondary heat exchange coil (14) are located in a temperature and humidity controlled section (100) with a temperature and humidity transducer (21) provided therein. A bypass electromagnetic valve (4) and an intelligent control cabinet (7) are further comprised. The temperature and humidity regulating equipment adds the secondary heat exchange coil (14) to the indoor evaporation coil (13) on the basis of a conventional refrigerating system, heats the circulating air, which passes through the evaporator and is frozen to exchange heat, by condensation waste heat of exhaust gas of the compressor unit, and realizes the temperature and humidity coordination through a bypass pipeline at the output end of the compressor unit, without requiring additional electric power consumption by applying the condensation waste heat. In addition, the compressor unit consisting of a plurality of compressors (1) can automatically load and unload according to a load demand of the rear end.

Description

Environmental protection and energy saving parallel temperature and humidity regulation equipment

Technical field

The utility model relates to an environmental protection and energy-saving parallel temperature and humidity regulation device.

Background technique

With the advancement of technology and the development of human society, in more and more fields, the requirements for the control of the temperature and relative humidity of the environment in the production, transportation and storage of its products are increasingly demanding; for example, in electronics , chemical, food, pharmaceutical and other industries, some to improve and ensure the product's yield rate, and some to prevent material deterioration, etc. have a certain temperature and humidity control requirements for the relevant environment, with the requirements of the process requirements for the environment temperature and humidity requirements Improve, it promotes the development and progress of temperature and humidity regulation technology.

In the pharmaceutical industry, the "People's Republic of China Pharmacopoeia" and "Pharmaceutical Management Quality Management Regulations" have clear requirements on the temperature and relative humidity of the drug storage environment, for example: related requirements for conventional refrigerators: dry balls in the library Temperature: between 2 ° C and 8 ° C, relative humidity between 35% and 75%.

It is more difficult to control the relative humidity under this refrigerating condition than the humidity control under the air conditioning condition, because the saturated water vapor pressure of the humid air is lower in the low temperature environment, the unit mass The amount of water vapor that can be contained in the air is small; the conventional refrigeration process is accompanied by a certain dehumidification capacity, but it is difficult to maintain the library by the condensation and dehumidification attached to the refrigeration process in the lower temperature condition of the refrigerator. The relative humidity inside is below 75%. Therefore, in order to achieve the control target of the relative humidity of the refrigerator, in the actual use that has been put into operation, the conventional air cooler is operated with a low air volume and an auxiliary electric heating is added between the evaporation coil and the fan. The function of temperature regulation and dehumidification is realized. This method can achieve the temperature and humidity control target of the cold storage to a certain extent, but the auxiliary electric heating method is used to compensate the heat, and the energy consumption is large, and it has certain safety hazards and is not suitable for popularization.

Utility model content

The primary object of the utility model is to provide an environmentally-friendly and energy-saving parallel temperature and humidity control device with low energy consumption and low temperature consumption, which is suitable for popularization and application. The specific scheme of the utility model is as follows:

An environmentally-friendly and energy-saving parallel temperature and humidity control device, characterized in that:

The utility model comprises a compressor unit connected by a pipeline, an oil separator, a condenser, an indoor heat exchange unit and a gas-liquid separator; the compressor unit comprises two or more compressors, and the same or different models are used between the compressors The number of indoor heat exchange units is two or more, and includes an evaporation coil and a secondary heat exchange coil, wherein the evaporation coil and the secondary heat exchange coil are located in a temperature and humidity controlled interval (100) Inside, the temperature and humidity controlled zone (100) is also provided with a temperature and humidity transmitter;

An output end of the compressor unit is connected to an input end of the condenser through the oil separator, and an output end of the condenser is divided into two paths, one of which passes through an evaporation coil solenoid valve and the evaporation coil The input end is connected, and the other end is connected to the input end of the secondary heat exchange coil through a secondary heat exchange coil solenoid valve, and the output end of the secondary heat exchange coil is connected to the input end of a check valve The output end of the one-way valve and the output end of the evaporating coil solenoid valve are combined into one way, and then connected to the input end of the evaporating coil through a throttling device, and the output end of the evaporating coil passes through The gas-liquid separator is connected to an input end of the compressor group;

The utility model also includes a bypass solenoid valve, one end of the bypass solenoid valve is connected to the pipeline between the output end of the compressor unit and the input end of the condenser, and the other end is connected to the output end of the condenser and is divided into two On the pipeline before the road;

The utility model further comprises an intelligent control cabinet, wherein the compressor unit, the bypass solenoid valve, the evaporation coil solenoid valve, the secondary heat exchange coil solenoid valve and the temperature and humidity transmitter are respectively electrically connected with the intelligent control cabinet.

Preferably, the liquid storage device is further connected to the output line of the condenser in two stages before the output end of the condenser, and one end of the bypass electromagnetic valve is connected to the output end of the compressor unit. The conduit between the input ends of the condenser is connected to the output of the reservoir.

Preferably, the method further includes an outer rotor motor electrically connected to the intelligent control cabinet, the outer rotor motor is located at one side of the evaporation coil, and the negative pressure port of the outer rotor motor and the evaporation coil In contrast, the secondary heat exchange coil is located between the evaporation coil and the outer rotor motor.

Preferably, the method further includes a high voltage sensor, a low pressure sensor and a first controller respectively electrically connected to the intelligent control cabinet, wherein the high pressure sensor is disposed at an output end of the compressor group, and the low pressure sensor is disposed at the An input end of the compressor unit, each of the compressors being respectively provided with the first control Device.

Preferably, the compressor unit is further provided with a second overall controller.

Preferably, an electronic oil balancer is further included, and the electronic oil balancer is respectively disposed between each of the compressor and the speed oil separator.

Preferably, the throttle device is a thermal expansion valve, the thermal expansion valve includes a valve body, a capillary tube, and a temperature sensing package, the temperature sensing is disposed at an output end of the evaporation coil, and the temperature sensing package The valve body is connected by the capillary.

Preferably, the secondary heat exchange coil is a finned condenser.

The environmental protection and energy-saving parallel temperature and humidity control device provided by the utility model adds a secondary condensing heat exchange coil at the indoor evaporation coil on the basis of the conventional refrigeration system, which utilizes the condensation heat of the compressor group exhaust to evaporate The circulating air of the chilled heat exchange is heated and coordinated by the bypass line at the output of the compressor unit. The condensing waste heat is used without additional power consumption. In addition, the compressor unit is composed of several compressors, which can be loaded according to the end load. For automatic loading and unloading, the biggest benefit of this method is to reduce the operating energy consumption of the system, so the energy consumption is small and suitable for popularization and application.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the invention, and are not a limitation of the invention,

FIG. 1 is a schematic structural view of a system according to an embodiment of the present invention.

1. Compressor 2. Oil separator 3. Condenser 4. Bypass solenoid valve 5. Accumulator 6. Gas-liquid separator 7. Intelligent control cabinet 8. Evaporative coil solenoid valve 9. Secondary heat exchange plate Pipe solenoid valve 10, throttling device 11, check valve 12, indoor heat exchange unit 13, evaporation coil 14, secondary heat exchange coil 15, outer rotor motor 16, low pressure sensor 17, high pressure sensor 18, first control 19, the second total controller 20, electronic oil balancer 21, temperature and humidity transmitter 100, temperature and humidity controlled interval

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. set.

Example

As shown in Figure 1, an environmentally-friendly and energy-saving parallel temperature and humidity control device is characterized by:

The utility model comprises a compressor unit connected by a pipeline, an oil separator 2, a condenser 3, an indoor heat exchange unit 12 and a gas-liquid separator 6; the compressor unit comprises two or more compressors 1 and between the compressors 1 The same or different models are used; the number of the indoor heat exchange units 12 is two or more, including the evaporation coil 13 and the secondary heat exchange coil 14, wherein the evaporation coil 13 and the secondary heat exchange The coil 14 is located in the temperature and humidity controlled section 100, and the temperature and humidity controlled section 100 is further provided with a temperature and humidity transmitter 21;

An output end of the compressor unit is connected to an input end of the condenser 3 through the oil separator 2, and an output end of the condenser 3 is divided into two paths, one of which passes through an evaporation coil solenoid valve 8 and The input end of the evaporating coil 13 is connected, and the other end is connected to the input end of the secondary heat exchange coil 14 through the secondary heat exchange coil solenoid valve 9, and the output end of the secondary heat exchange coil 14 is An input end of a one-way valve 11 is connected, and an output end of the one-way valve 11 and an output end of the evaporating coil solenoid valve 8 are combined into one way and then connected to the evaporating coil 13 through a throttling device 10 in common. At the input end, the output end of the evaporation coil 13 is connected to the input end of the compressor unit through the gas-liquid separator 6;

A bypass solenoid valve 4 is also included, one end of the bypass solenoid valve 4 is connected to the pipeline between the output end of the compressor unit and the input end of the condenser 3, and the other end is connected to the output of the condenser 3. The end is divided into two lines before the pipeline;

The utility model also includes an intelligent control cabinet 7, the compressor unit, the bypass solenoid valve 4, the evaporating coil solenoid valve 8, the secondary heat exchange coil solenoid valve 9 and the temperature and humidity transmitter 21 respectively and the intelligent control cabinet 7 electrical connection.

As a modification of the solution of the above embodiment, the accumulator 5 is further connected in series to the line before the output end of the condenser 3 is divided into two lines, and one end of the speed bypass solenoid valve 4 is connected. The other end is connected to the output end of the accumulator 5 on the line between the output of the compressor unit and the input end of the condenser 3.

As an improvement of the above embodiment, an outer rotor motor 15 electrically connected to the intelligent control cabinet 7 is provided, the outer rotor motor 15 is located at one side of the evaporation coil 13, and the outer rotor motor 15 a negative pressure port is opposite to the evaporation coil 13, and the secondary heat exchange coil 14 is located at the evaporation tray The tube 13 is interposed between the outer rotor motor 15.

As a modification of the above embodiment, the high voltage sensor 17, the low pressure sensor 16, and the first controller 18 are respectively electrically connected to the intelligent control cabinet 7, wherein the high pressure sensor 17 is provided at the output of the compressor unit. The low pressure sensor 16 is disposed at an input end of the compressor unit, and each of the compressors 1 is respectively provided with the first controller 18.

As a modification of the above embodiment, the compressor unit is further provided with a second overall controller 19 for protecting the components of the compressor 1 and the like, generally adopting a normally closed type signal and adopting a series connection form during use. If the oil pressure is too low or the high pressure is too high (the high and low pressure settings are all adjustable within a certain range), it will be in the off state. When the intelligent control system detects that the high and low voltage controllers are in an open state, it will stop. The relevant components operate to protect the system.

As a modification of the above embodiment, an electronic oil balancer 20 is further included, and the electronic oil balancer 20 is disposed between each of the compressor 1 and the oil separator 2, respectively. The electronic oil balancer 20 is a device with an oil level sensor and a solenoid valve. When the oil level sensor detects that the oil level in the compressor 1 is low, the signal will open the solenoid valve, and the oil separator 2 The lubricating oil in the middle oil reservoir is replenished into the cylinder of the compressor to ensure sufficient lubricating oil in the compressor 1, which can ensure the normal operation of the compressor 1, and the lubricating and cooling functions of the various moving parts of the compressor 1, when the compressor When the middle oil level is too low and the corresponding lubricating oil cannot be replenished, the electronic oil balancer 20 will issue an alarm signal and stop the operation of the corresponding compressor 1 through the intelligent control system to protect the utility.

As a modification of the solution of the above embodiment, the throttle device 10 is a thermal expansion valve, and the thermal expansion valve includes a valve body, a capillary tube and a temperature sensing package, and the temperature sensing is disposed at an output end of the evaporation coil 13 And the temperature sensing package is connected to the valve body through the capillary.

As a modification of the solution of the above embodiment, the secondary heat exchange coil 14 is a finned condenser 3, and the function thereof is to replace the conventional auxiliary electric heating to heat and circulate the circulating air, thereby avoiding the use of freezing and dehumidifying. During the process, the temperature in the library drops too fast. When the absolute humidity in the library has not reached the ideal state, the cold storage temperature has reached the lower limit of the control range and must be exited from the dehumidification operation. The secondary heat exchange coil 14 is used to heat and circulate the circulating air by using the residual heat of condensation to slow down the temperature drop rate of the cold storage, which can provide more favorable operating conditions for the operation of the freezing and dehumidifying operation, and enhance the dehumidification capacity of the system to meet the cold storage of the medicine storage. Temperature and relative humidity control requirements.

The environmentally-friendly and energy-saving parallel temperature and humidity control device includes a control system in addition to the refrigerant circulation system. The temperature and humidity transmitter 21 located in the controlled temperature and humidity interval 100 collects the indoor temperature and humidity signal, and feeds the signal back to the energy-saving temperature and humidity dehumidification system control cabinet, and performs related logic through the programmable controller (PLC) in the control cabinet. Operation and comparison, automatically select the operating mode of the environmentally-friendly and energy-saving parallel temperature and humidity control equipment, and issue relevant control signals to control the operating state of the relevant components to achieve the goal of automatic temperature and humidity control.

For example, the temperature and humidity control device is used in a medicine refrigerator, the temperature control of the refrigerator requires 2 ° C to 8 ° C, and the relative humidity is between 35% and 75%. The parameters of the control system of the temperature and humidity control device can be made. The following settings; temperature control mode basic operating parameter settings: starting temperature 7.0 ° C, shutdown temperature 3.0 ° C, dehumidification mode: lower temperature limit 3.2 ° C, upper temperature limit 7.0 ° C, dehumidification shutdown relative humidity 50%, dehumidification boot relative humidity 70%; (According to the principle of temperature priority, ensure the relative humidity of the cold storage is adjusted and controlled under the premise of the cold storage temperature between 3 °C and 7 °C)

Referring to the system structure diagram, the system operation process is as follows:

The temperature and humidity transmitter 21 collects the temperature and temperature state parameter signals in the temperature and humidity controlled interval, and transmits the signals to the intelligent control cabinet 7, and the intelligent control cabinet 7 compares and analyzes the logic through the internal program, according to the operation and logic. After the analysis, a corresponding control signal is issued to control the working state of each component.

If the temperature and humidity state of the temperature and humidity controlled section meets the condition of the temperature regulation operation, the temperature and humidity control device operates in the temperature regulation mode: that is, the compressor 1 is started, and the high temperature and high pressure refrigerant gas discharged from the exhaust port of the compressor 1 passes. After the oil separator 2 enters the condenser 3 to perform condensation heat exchange (when the bypass solenoid valve 4 is in the closed state), the high-temperature high-pressure refrigerant gas is condensed and exchanged by the condenser 3 to become a medium-temperature high-pressure refrigerant liquid, and passes through The accumulator 5 enters the refrigerant supply line to the evaporating coil solenoid valve 8 and The front end of the secondary heat exchange coil solenoid valve 9 is in the tempering mode of operation, the evaporating coil solenoid valve 8 is in an open state (refrigerant can pass), and the secondary heat exchange coil solenoid valve 9 is in a closed state, cooling The liquid enters the throttling device 10 through the evaporating coil solenoid valve 8. After the decompression and throttling of the throttling device 10, the refrigerant enters the evaporating coil 13 for evaporation, and the indoor heat exchange device 12 (indoor heat exchange unit) The outer rotor motor 15 is in a state of high speed operation, forcing the air in the temperature and humidity controlled section to pass through the heat exchange of the evaporation coil 13 of the indoor heat exchange device 12 to achieve the purpose of cooling and temperature regulation, and evaporating in the evaporation coil 13 The liquid refrigerant after the heat exchange becomes a low-temperature low-pressure gas refrigerant (or a small amount of refrigerant liquid which is not completely evaporated) and returns to the gas-liquid separator 6. After the gas-liquid separator 6 is processed, the gaseous refrigerant reaches the compressor. The suction end of 1 is discharged from the exhaust port of the compressor 1 by the compression treatment of the compressor 1, thereby forming a refrigerant circulation path in a complete temperature adjustment mode. Of course, the system is a parallel system, and the compression process of the refrigerant from the low-temperature low-pressure gas state to the high-temperature high-pressure gas state is completed by two or more compressors of the same model or different types, and the compressor is started and stopped. The quantity of the pressure parameter value collected by the low pressure sensor 16 is fed back to the intelligent control cabinet 7, which issues an associated control signal according to a predetermined logic relationship to automatically complete the loading of the refrigeration system (increasing the number of compressor opening) unloading (reducing the number of compressor opening). The order of starting and stopping of the compressor can also be determined by its accumulated running time, so that the cumulative running time of each compressor is relatively balanced. The number of indoor heat exchange devices 12 in the temperature and humidity controlled interval may also be plural, and the operating state thereof may also be independently controlled.

When the temperature and humidity transmitter 21 detects that the temperature in the library is between 3 ° C and 7 ° C, and the relative humidity in the library exceeds 70%, the temperature and humidity control device is automatically put into the dehumidification mode operation, and the system flow is as follows:

That is, the compressor 1 is started, and after the high-temperature high-pressure refrigerant gas discharged from the exhaust port of the compressor 1 passes through the oil separator 2, since the bypass solenoid valve 4 is in the open state in this mode, part of the high-temperature high-pressure refrigerant gas passes through The solenoid valve does not need to flow through the condenser 3 and the accumulator 5 directly through the refrigerant line to the front end of the evaporating coil solenoid valve 8 and the secondary heat exchange coil solenoid valve 9, in which the evaporating coil is operated in a dehumidifying mode. The solenoid valve 8 is in a closed state, the secondary heat exchange coil solenoid valve 9 is in an open state (refrigerant can pass), and the high pressure and higher temperature refrigerant is cooled by the secondary heat exchange coil 14 and then passed through a throttling device. After the decompression and throttling of 10, the refrigerant enters the evaporating coil 13 for evaporation, and at this time, the outer rotor motor 14 of the indoor heat exchange device 12 is in a state of low speed operation (on the one hand, the circulating air of the temperature and humidity controlled section is forcibly forced) The heat exchange through the evaporation coil 13 of the indoor heat exchange device 12 is relatively slow, The circulating air is brought to a temperature lower than the dew point at the evaporation coil 13, and the condensed water is deposited at the fins through the drainage system to achieve the purpose of freezing and dehumidifying, and on the other hand, to avoid passing through the evaporation coil 13 The circulating air cooling temperature is too large, so the circulating heat of the chilled and dehumidified circulating air is assisted by the condensing heat in the secondary heat exchange coil 14 , and the liquid refrigerant after the evaporative heat exchange in the evaporating coil 13 becomes low temperature and low pressure. The gaseous refrigerant (or a small amount of refrigerant liquid that has not completely evaporated) is returned to the gas-liquid separator 6, and after passing through the treatment of the gas-liquid separator 6, the gaseous refrigerant reaches the suction end of the compressor 1, and passes through the compressor 1 After the compression process, it is discharged from the exhaust port of the compressor 1, thereby forming a complete refrigerant circulation path in the dehumidification mode. Similarly, the system is a parallel system, and the number of start-stops (loading and unloading) of the compressor 1 of the system and the operating state of the indoor heat exchange device 12 are all fed back to the smart by the low-voltage sensor 16 and the temperature and humidity transmitter 21. The control cabinet 7 is controlled by the intelligent control cabinet 7 to issue relevant refrigeration according to the set logic relationship.

The temperature and humidity control device includes a control system in addition to the refrigerant circulation system, and the temperature and humidity transmitter 21 located in the temperature and humidity controlled interval collects the indoor temperature and humidity signal, and the low pressure sensor 16 located at the return end of the refrigeration system uses the pressure signal of the refrigeration system. And feedback the signal to the intelligent cabinet, through the programmable logic controller (PLC) in the control cabinet for related logic operations and comparison, automatically select the operating mode of the temperature and humidity control device and load and unload the system operation, And issue relevant control signals to control the operating state of the relevant components to achieve the goal of automatic temperature and humidity control.

The technical solutions provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the embodiments of the present invention are described in the specific examples. The description of the above embodiments is only applicable to help understand the present invention. The principles of the embodiments; at the same time, those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific embodiments and the scope of application, in summary, the contents of this specification should not be construed as Limitations of utility models.

Claims

An environmentally-friendly and energy-saving parallel temperature and humidity control device, characterized in that:

The utility model comprises a compressor unit connected by a pipeline, an oil separator, a condenser, an indoor heat exchange unit and a gas-liquid separator;

The compressor unit includes two or more compressors, and the same or different models are used between the compressors;

The number of the indoor heat exchange units is two or more, and includes an evaporation coil and a secondary heat exchange coil, wherein the evaporation coil and the secondary heat exchange coil are located in a controlled temperature and humidity interval. There is also a temperature and humidity transmitter in the controlled temperature and humidity interval;

An output end of the compressor unit is connected to an input end of the condenser through the oil separator, and an output end of the condenser is divided into two paths, one of which passes through an evaporation coil solenoid valve and the evaporation coil The input end is connected, and the other end is connected to the input end of the secondary heat exchange coil through a secondary heat exchange coil solenoid valve, and the output end of the secondary heat exchange coil is connected to the input end of a check valve The output end of the one-way valve and the output end of the evaporating coil solenoid valve are combined into one way, and then connected to the input end of the evaporating coil through a throttling device, and the output end of the evaporating coil passes through The gas-liquid separator is connected to an input end of the compressor group;

The utility model also includes a bypass solenoid valve, one end of the bypass solenoid valve is connected to the pipeline between the output end of the compressor unit and the input end of the condenser, and the other end is connected to the output end of the condenser and is divided into two On the pipeline before the road;

The utility model further comprises an intelligent control cabinet, wherein the compressor unit, the bypass solenoid valve, the evaporation coil solenoid valve, the secondary heat exchange coil solenoid valve and the temperature and humidity transmitter are respectively electrically connected with the intelligent control cabinet.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein:

A reservoir is further included, the reservoir is connected in series to the output of the condenser and is divided into two pipelines, one end of the bypass solenoid valve is connected to the output of the compressor unit and The conduit between the input ends of the condenser and the other end are connected to the output of the reservoir.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein:

And an outer rotor motor electrically connected to the intelligent control cabinet, the outer rotor motor is located at one side of the evaporation coil, and a negative pressure port of the outer rotor motor is opposite to the evaporation coil The secondary heat exchange coil is located between the evaporation coil and the outer rotor motor.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein:

a high voltage sensor, a low pressure sensor, and a first controller respectively electrically connected to the intelligent control cabinet, wherein the high pressure sensor is disposed at an output end of the compressor group, and the low pressure sensor is disposed at the compressor unit At the input end, each of the compressors is respectively provided with the first controller.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 4, wherein the compressor unit is further provided with a second overall controller.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein:

Also included is an electronic oil balancer disposed between each of the compressors and the oil separator.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein:

The throttle device is a thermal expansion valve, and the thermal expansion valve includes a valve body, a capillary tube, and a temperature sensing package. The temperature sensing component is disposed at an output end of the evaporation coil, and the temperature sensing package passes the A capillary tube is coupled to the valve body.
The environmentally-friendly and energy-saving parallel temperature and humidity control device according to claim 1, wherein the secondary heat exchange coil is a finned condenser.