Composite energy supply system for cold and hot double-effect recovery

Abstract

The utility model discloses a cold and hot double-effect recovery composite energy supply system which comprises a unit coaming module, a double-effect recovery module, a first energy supply module and a second energy supply module, the double-effect recovery module, the first energy supply module and the second energy supply module are arranged in the unit coaming module, and an air return channel, a first fresh air channel and a second fresh air channel are formed in the unit coaming module. After waste heat and part of the fresh air pass through the double-effect recovery module, the fresh air is heated, is subjected to secondary heating through the first energy supply module and the second energy supply module and then is fed into the drying line through the high-temperature air supply opening, and part of the fresh air passes through the second fresh air channel and then is fed into the production workshop. The combined energy supply system with the cold and hot double-effect recovery function has the advantages that industrial waste heat and an environment cold source can be recovered, the recovery efficiency is high, the requirement for combined energy supply in production can be met, and the combined energy supply system has good practicability and energy-saving effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature drying equipment technical field especially relates to a cold and hot double effect recovery's composite energy supply system. BACKGROUND

[0002] Industrial production process needs to consume a large amount of primary energy, wherein the generation of various waste heat, recovery of waste heat is an important energy-saving approach. At present, single-stage heat pump drying or waste heat recovery device is mostly used in the industry, and the energy-saving rate is low. Moreover, the drying temperature requirement of many industrial products is 120 DEG C or above, and single-stage heat pump drying is difficult to reach the drying temperature. And the function of the equipment needs to be diversified in some industries, and only the function of dehumidification and heating air is insufficient to meet the industrial demand.

[0003] In the patent with the publication number CN108679996B, a "closed heat pump condensing heat recovery drying system" is disclosed, which includes at least one set of dehumidification heat pump module and one set of condensing heat recovery module. The condenser of the dehumidification heat pump module is arranged at the air supply port of the condensing heat recovery module, and the dehumidification performance can reach about 4-5 kg of water per degree of electricity, which can save more than 25% of energy. The cooling water pipeline is only concentrated on the condensing heat recovery device, which saves the pipeline cost and shortens the installation period. The condensing heat recovery device is installed at the feed inlet position, and other dehumidification heat pump condensing heat is used to heat the material, and the drying efficiency is less affected by the external environment temperature. However, the system has the following problems: 1. The whole system can only send hot air to the drying chamber to reduce the humidity of the drying chamber, and the function is relatively single; 2. The system uses single-stage condenser to increase temperature, which is difficult to meet the demand of high-temperature heating; 3. Only the return air is recovered, and the recovery utilization rate is low.

[0004] Therefore, we propose a cold and hot double effect recovery composite energy supply system. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a cold and hot double effect recovery composite energy supply system, which can recover industrial waste heat and environmental cold source, has high recovery efficiency, can meet the demand of production composite energy supply, has good practicality, and has good energy-saving effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of cold and hot double-effect recovery composite energy supply system, comprising: unit enclosure module and be located in double-effect recovery module, first energy supply module and second energy supply module of unit enclosure module, the unit enclosure module inside forms return air passage, first fresh air passage and second fresh air passage, one end of return air passage is equipped with return air port, two ends of first fresh air passage are equipped with first fresh air inlet and high-temperature air supply port respectively, two ends of second fresh air passage are equipped with second fresh air inlet and low-temperature air supply port respectively, and the low-temperature air supply port is communicated with indoor;The double-effect recovery module includes heat recovery heat exchanger, and the return air port and first fresh air inlet are equipped at the air inlet side of the heat recovery heat exchanger respectively;The first energy supply module includes first compressor, first condenser, first throttling valve and first evaporator connected by copper pipe;The second energy supply module includes second compressor, second condenser, second throttling valve and second evaporator connected by copper pipe;The first evaporator is equipped at the air outlet side of the heat recovery heat exchanger, and is equipped in the return air passage, and the second condenser and first condenser are sequentially equipped at the air outlet side of the heat recovery heat exchanger, and are equipped in the first fresh air passage, and the second evaporator is equipped in the second fresh air passage.

[0008] Further, the first fresh air inlet is communicated with indoor.

[0009] Further, the second fresh air inlet is communicated with indoor.

[0010] Further, one end of the return air passage away from return air port is equipped with exhaust port.

[0011] Further, air valve is equipped between the return air passage and first fresh air passage, and the air valve is equipped between first evaporator and second condenser.

[0012] Further, the heat recovery heat exchanger is plate-type heat exchange core.

[0013] Further, the heat recovery heat exchanger is heat pipe heat exchanger.

[0014] The utility model discloses a kind of cold and hot double-effect recovery composite energy supply system, comprising: unit enclosure module and be located in double-effect recovery module, first energy supply module and second energy supply module of unit enclosure module, the unit enclosure module inside forms return air passage, first fresh air passage and second fresh air passage, one end of return air passage is equipped with return air port, two ends of first fresh air passage are equipped with first fresh air inlet and high-temperature air supply port respectively, two ends of second fresh air passage are equipped with second fresh air inlet and low-temperature air supply port respectively, and the low-temperature air supply port is communicated with indoor;The double-effect recovery module includes heat recovery heat exchanger, and the return air port and first fresh air inlet are equipped at the air inlet side of the heat recovery heat exchanger respectively;The first energy supply module includes first compressor, first condenser, first throttling valve and first evaporator connected by copper pipe;The second energy supply module includes second compressor, second condenser, second throttling valve and second evaporator connected by copper pipe;The first evaporator is equipped at the air outlet side of the heat recovery heat exchanger, and is equipped in the return air passage, and the second condenser and first condenser are sequentially equipped at the air outlet side of the heat recovery heat exchanger, and are equipped in the first fresh air passage, and the second evaporator is equipped in the second fresh air passage.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A system principle schematic view of a composite energy supply system with cold and heat double-effect recovery provided by the utility model;

[0016] Figure 2 A wind channel schematic view of a first embodiment of the composite energy supply system with cold and heat double-effect recovery.

[0017] Figure 3 A wind channel schematic view of a second embodiment of the composite energy supply system with cold and heat double-effect recovery. DETAILED DESCRIPTION

[0018] The utility model provides a kind of composite energy supply system with cold and heat double-effect recovery, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following referring to drawing and taking example to further detail the utility model of embodiment.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] The utility model provides a kind of composite energy supply system with cold and heat double-effect recovery, its structure as Figures 1-3 Shown, including: unit enclosure module 1 and the double-effect recovery module 2, first energy supply module 3 and second energy supply module 4 being arranged in unit enclosure module 1;The unit enclosure module 1 inside forms return air passage 11, first fresh air passage 12 and second fresh air passage 13, one end of return air passage 11 is equipped with return air port 111, both ends of first fresh air passage 12 are equipped with first fresh air inlet 121 and high-temperature air supply port 122 respectively, both ends of second fresh air passage 13 are equipped with second fresh air inlet 131 and low-temperature air supply port 132 respectively, and the low-temperature air supply port 132 is communicated with indoor.

[0020] The double-effect recovery module 2 includes heat recovery heat exchanger 21, and the return air port 111 and first fresh air inlet 121 are respectively arranged at the air inlet side of the heat recovery heat exchanger 21;The first energy supply module 3 includes first compressor 31, first condenser 32, first throttling valve 33 and first evaporator 34 connected by copper pipe;The second energy supply module 4 includes second compressor 41, second condenser 42, second throttling valve 43 and second evaporator 44 connected by copper pipe.When air temperature is higher, indoor air passes through second fresh air inlet 131, and second evaporator 44 is cooled to the passing indoor air, and low-temperature air is sent into production workshop through low-temperature air supply port 132, to meet the working environment cooling demand of industrial production.

[0021] The first evaporator 34 is arranged on the air outlet side of the heat recovery heat exchanger 21 and in the return air passage 11, the second condenser 42 and the first condenser 32 are sequentially arranged on the air outlet side of the heat recovery heat exchanger 21 and in the first fresh air passage 12, and the second evaporator 44 is arranged in the second fresh air passage 13.

[0022] In the return air passage 11 and the first fresh air passage 12, the high-temperature and high-humidity waste gas of the drying line passes through the return air port 111 and exchanges heat with the low-temperature and low-humidity fresh air passing through the first fresh air inlet 121 in the heat recovery heat exchanger 21, the temperature of the waste gas is lowered, and the first evaporator 34 further cools and dehumidifies the waste gas, the fresh air is preliminarily heated after passing through the heat recovery heat exchanger 21, and the second condenser 42 and the first condenser 32 further heat the fresh air, and the high-temperature and low-humidity air is sent into the drying line through the high-temperature air supply port 122 for drying process. In the second fresh air passage 13, the low-temperature and low-humidity fresh air passing through the second fresh air inlet 131 is further cooled by the second evaporator 44 to meet the human comfort temperature, and the low-temperature air is sent into the production workshop through the low-temperature air supply port 132. In this way, the heat of the drying line is recycled and further heated to a high temperature, which meets the production requirements, has good environmental protection performance, has high energy efficiency ratio, and at the same time, the environmental temperature of the production workshop is lowered, the working environment is improved, and the diversification of production can be met.

[0023] Specifically, the first fresh air inlet 121 is in communication with the indoor environment. The high-temperature waste gas and the low-temperature indoor air are heat recovered and exchanged in the heat recovery heat exchanger 21, the temperature of the return air is lowered, and the temperature of the return air is lowered again by the first evaporator 34. Due to the pre-cooling of the return air in the heat recovery heat exchanger 21, the cold load of the first evaporator 34 is small; the indoor fresh air is heated in the heat recovery heat exchanger 21, and then heated by the second condenser 42 and the first condenser 32. Similarly, the heat load of the second condenser 42 and the first condenser 32 is small, the whole system runs more stably and durably, and has a high energy efficiency ratio.

[0024] Specifically, the second fresh air inlet 131 is in communication with the indoor environment. The air in the production workshop is sent to the second evaporator 44 through the second fresh air inlet 131 to lower the temperature, and provide a comfortable working environment for the production personnel. The air sent into the drying line is the indoor fresh air after being cooled and dehumidified by the second evaporator 44, and then the air is heated by the second evaporator 44, which is beneficial to improve the drying efficiency.

[0025] Specifically, as shown in FIG. 1, Figure 2In the first embodiment shown, the return air passage 11 is provided with an exhaust port 112 at one end away from the return air port 111, which is in communication with the outside atmosphere. If some exhaust air is sent into the drying chamber after treatment, the concentration of some water-insoluble substances in the exhaust air may be too high to affect the drying quality, or the humidity of some exhaust air is too high, and it is difficult to reduce the humidity to the ideal value by one-time dehumidification. Therefore, the exhaust air with a higher temperature after passing through the heat recovery heat exchanger 21 and the first evaporator 34 of the return air passage 11 is cooled and dehumidified, and continuously discharged through the exhaust port 112, thereby reducing the humidity of the drying line and improving the drying efficiency.

[0026] Specifically, as shown in the first embodiment, Figure 3 In the second embodiment shown, the return air passage 11 is provided with an air valve 113 between the first fresh air passage 12, and the air valve 113 is arranged between the first evaporator 34 and the second condenser 42. In some scenarios, the exhaust air can be repeatedly sent into the drying chamber for circulation. The air valve 113 is opened, the exhaust air after cooling and dehumidification is warmed up twice by the second condenser 42 and the first condenser 32, and is sent into the drying line for drying the products. According to the actual application scenario, the fresh air or the mixed air of fresh air and return air can be selected as the source of the supply air, so that the system can be applied to different scenarios and has good versatility.

[0027] Specifically, as shown in the first embodiment, Figure 1 、 Figure 2 In the first embodiment shown, the heat recovery heat exchanger 21 is a plate heat exchange core. The plate heat exchange core uses special paper materials or aluminum plates to assemble passages with an interval between each layer. The inlet air passes through the odd-numbered layer passages, and the exhaust air passes through the even-numbered layer passages. The heat is transferred through the contact between the air and the layer plates, which has the advantages of simple structure, low manufacturing cost, and no additional energy consumption.

[0028] Specifically, as shown in the second embodiment, Figure 3 In the second embodiment shown, the heat recovery heat exchanger 21 is a heat pipe heat exchanger. The heat pipe is a heat exchange element that uses a phase change of a working medium such as ammonia for heat exchange. When one end (evaporation section) of the heat pipe is heated, the working medium in the pipe vaporizes due to heat absorption. The gaseous working medium flows to the other end (condensation section) along the pipe, releases heat to the heated medium, and condenses into liquid due to heat loss under the action of capillary and gravity, and returns to the evaporation section, thereby completing a thermodynamic cycle. The heat pipe heat exchanger has the advantages of compact structure, low maintenance cost, no additional energy consumption, and high heat exchange efficiency. Different heat recovery heat exchangers 21 can be selected according to the requirements.

[0029] The utility model discloses a cold and heat double -effect recovery's composite energy supply system, including the module of unit enclosure and the double -effect recovery module, first energy supply module and second energy supply module of being located in the module of unit enclosure, the inside of unit enclosure forms return air passage, first fresh air channel and second fresh air channel, and after the waste heat and part fresh air pass through double -effect recovery module, fresh air is heated, and after the two -level heating of first energy supply module and second energy supply module, through high -temperature air supply opening, send into drying line, and part fresh air sends into production workshop after passing through second fresh air channel.

[0030] It should be understood that modifications or variations can be made according to the above description by one of ordinary skill in the art, and all such modifications and variations are intended to be within the scope of the claims of the utility model.

Claims

1. A combined energy supply system for cold and heat double-effect recovery, characterized in that, Comprise: The unit enclosure module and the double-effect recovery module, the first energy supply module and the second energy supply module arranged in the unit enclosure module; The unit enclosure module forms a return air passage, a first fresh air passage and a second fresh air passage inside, one end of the return air passage is provided with a return air inlet, both ends of the first fresh air passage are respectively provided with a first fresh air inlet and a high-temperature air supply inlet, both ends of the second fresh air passage are respectively provided with a second fresh air inlet and a low-temperature air supply inlet, and the low-temperature air supply inlet is communicated with the indoor; The double-effect recovery module comprises a heat recovery heat exchanger, and the return air inlet and the first fresh air inlet are respectively arranged on the air inlet side of the heat recovery heat exchanger; The first energy supply module comprises a first compressor, a first condenser, a first throttling valve and a first evaporator connected by copper pipes; The second energy supply module comprises a second compressor, a second condenser, a second throttling valve and a second evaporator connected by copper pipes; The first evaporator is arranged on the air outlet side of the heat recovery heat exchanger and in the return air passage, the second condenser and the first condenser are sequentially arranged on the air outlet side of the heat recovery heat exchanger and in the first fresh air passage, and the second evaporator is arranged in the second fresh air passage.

2. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: The first fresh air inlet is communicated with the indoor.

3. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: The second fresh air inlet is communicated with the indoor.

4. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: One end of the return air passage away from the return air inlet is provided with an air outlet.

5. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: An air valve is arranged between the first evaporator and the second condenser between the return air passage and the first fresh air passage.

6. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: The heat recovery heat exchanger is a plate-type heat exchange core.

7. A combined energy supply system for cold and heat recovery according to claim 1, characterized in that: The heat recovery heat exchanger is a heat pipe heat exchanger.

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