CN219454310U - Cold chain refrigerating system waste heat utilization system - Google Patents
Cold chain refrigerating system waste heat utilization system Download PDFInfo
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- CN219454310U CN219454310U CN202320812539.1U CN202320812539U CN219454310U CN 219454310 U CN219454310 U CN 219454310U CN 202320812539 U CN202320812539 U CN 202320812539U CN 219454310 U CN219454310 U CN 219454310U
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Abstract
The utility model discloses a cold chain refrigerating system waste heat utilization system, which comprises a refrigerating system, a heat pump system and a hot water supply system, wherein the refrigerating system comprises a condensation evaporator, a compressor and an evaporator, and gaseous refrigerant from the evaporator enters the condensation evaporator to exchange heat with a liquid heat pump working medium of the heat pump system, so that the heat pump working medium is changed from a liquid state to a gaseous state; the heat pump system comprises a heat pump unit and a gas-liquid separator, wherein the heat pump unit comprises a heat pump compressor, a heat pump oil separator and a heat pump condenser, an outlet of a heat pump medium channel of the heat pump condenser is connected with a second inlet of the gas-liquid separator through a connecting pipeline, and a water channel of the heat pump condenser is connected with a cold water supply pipeline. The condensing evaporator of the utility model enables the heat pump working medium and the refrigerant to exchange heat, and the heat pump unit exchanges heat with water to provide hot water for residential areas, thereby realizing high-efficiency utilization of waste heat of a refrigerating system, reducing the emission of waste heat in the atmosphere, saving energy and reducing emission.
Description
Technical Field
The utility model relates to the field of waste heat utilization of cold chain projects, in particular to a waste heat utilization system of a cold chain refrigerating system.
Background
At present, urban and rural residents in China basically realize the 'from none to none' stage in most consumption fields, and are transitioning to the 'from none to good' and 'new and special' stages. At present, residents pay more attention to health and life quality, and especially the requirements on quality, safety and the like of agricultural product consumption are continuously improved.
From the viewpoint of the consumption demand of agricultural products, domestic consumers are rapidly growing in demand for fresh foods, quick-frozen foods, dairy products, cold drinks. In this regard, industry experts predict that the development trend of the cold chain logistics industry is that the annual increase of the number of refrigerators in China reaches more than 30% in the next 10 years. The service quality and efficiency of the power-assisted cold chain system are rapidly improved through the development of technologies such as refrigeration, food quick freezing, cold storage automation, packaging and the like.
The existing large-scale wholesale market cold chain projects not only comprise a refrigeration house, but also comprise facilities such as office areas, commercial buildings, factories and the like nearby. The large-scale freezer uses the cold volume great, needs to consume a large amount of energy and guarantees that the storehouse is in low temperature environment. This means that the refrigeration system of the refrigerator will generate a lot of waste heat, which is seriously wasted and the ambient temperature is increased. Therefore, how to recycle the waste heat generated by refrigeration of the refrigeration house for the use of nearby residents or factories not only has important social and economic significance, but also is beneficial to reducing the ambient temperature of the refrigeration house.
Disclosure of Invention
In view of the above, the utility model provides a cold chain refrigerating system waste heat utilization system which fully utilizes heat generated by a refrigeration house refrigerating system to heat domestic water, provides hot water for residents, factories and the like, realizes recycling of waste heat, saves energy and protects environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to a cold chain refrigerating system waste heat utilization system, which comprises a refrigerating system, a heat pump system and a hot water supply system, wherein the refrigerating system comprises a condensation evaporator, an evaporator and a compressor, and a gaseous working medium from the evaporator enters the condensation evaporator through the compressor to exchange heat with a liquid heat pump working medium of the heat pump system, so that the heat pump working medium is changed from a liquid state to a gaseous state;
the heat pump system comprises a plurality of groups of heat pump units and a gas-liquid separator, wherein the gas-liquid separator is provided with a first inlet and a first outlet, the first outlet is connected with the inlet of a second medium channel of the condensation evaporator through a pipeline, and the outlet of the second channel of the condensation evaporator is connected with the first inlet of the gas-liquid separator through a pipeline;
each group of heat pump units comprises a heat pump compressor, a heat pump oil separator and a heat pump condenser which are sequentially connected, wherein an outlet of a heat pump medium channel of the heat pump condenser is connected with a second inlet of the gas-liquid separator through a connecting pipeline, and a water channel of the heat pump condenser is connected with a cold water supply pipeline.
In the utility model, the refrigerant of the refrigeration system circulates between the condensing evaporator and the evaporator, so as to realize the circulation of the refrigerant; the gaseous refrigerant flowing out of the evaporator enters the condensing evaporator after being compressed by the compressor and exchanges heat with the liquid heat pump working medium flowing through the condensing evaporator, and the gaseous refrigerant is changed into liquid refrigerant through heat exchange; the heat pump working medium becomes a gas state after heat exchange, can be used for heating water, realizes high-efficiency utilization of waste heat of a refrigerating system, reduces the emission of waste heat in the atmosphere, saves energy and reduces emission.
In a preferred embodiment of the present utility model, the water passages of the heat pump condensers of the plurality of heat pump units are sequentially connected through the cold water supply line, and the outlet of the cold water supply line is connected to the hot water supply system. In the utility model, the water in the cold water supply pipeline is subjected to multistage heat exchange by utilizing the plurality of heat pump units, so that the temperature of the hot water in the water tank is effectively ensured.
In a preferred embodiment of the utility model, a first float valve is arranged between the outlet of the condensing evaporator and the inlet of the evaporator; and a second ball float valve is arranged on a pipeline at the second inlet of the gas-liquid separator. In this additional scheme, first ball float valve and second ball float valve all have throttle decompression effect.
Compared with the prior art, the refrigerant of the refrigeration system circulates between the condensing evaporator and the evaporator, so that the circulation of the refrigerant is realized; the gaseous refrigerant flowing out of the evaporator enters the condensing evaporator after being compressed by the compressor and exchanges heat with the liquid heat pump working medium flowing through the condensing evaporator, and the gaseous refrigerant is changed into liquid refrigerant through heat exchange; the heat pump working medium becomes a gas state after heat exchange, can be used for heating water, realizes high-efficiency utilization of waste heat of a refrigerating system, reduces the emission of waste heat in the atmosphere, saves energy and reduces emission.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Detailed Description
The following describes embodiments of the present utility model in detail with reference to the accompanying drawings, and the embodiments and specific operation procedures are given by the embodiments of the present utility model under the premise of the technical solution of the present utility model, but the scope of protection of the present utility model is not limited to the following embodiments.
In the following embodiments, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" as may be used broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
The utility model aims at providing a waste heat utilization system for fully utilizing the waste heat of a condensation refrigeration system to provide hot water for residents or factories, so that the waste heat of the refrigeration system is reused, the emission of the waste heat is reduced, the energy consumption for heating the hot water is reduced, and the energy conservation and emission reduction have important significance.
As can be seen from fig. 1, the cold chain refrigerating system waste heat utilization system according to the present utility model comprises a heat pump system, a refrigerating system and a hot water supply system, wherein the refrigerating system comprises a condensation evaporator 2, an evaporator 3 and a compressor 13. When the heat pump type water heater works, gaseous refrigerant from the evaporator 3 enters the condensation evaporator 2 under the action of the compressor 13, exchanges heat with liquid heat pump working media entering the condensation evaporator 2, the refrigerant becomes liquid refrigerant after heat exchange, and the liquid heat pump working media becomes gaseous heat pump working media after heat exchange, so that the heat pump type water heater can be used for heating water.
The heat pump system comprises a plurality of groups of heat pump units and a gas-liquid separator 5, wherein the gas-liquid separator 5 is provided with a first inlet A, a second inlet B, a first outlet C and a second outlet D, the first outlet C of the gas-liquid separator 5 is connected with the inlet of a second channel of the condensation evaporator 2 through a pipeline, and the outlet of the second channel of the condensation evaporator 2 is connected with the first inlet A of the gas-liquid separator through a pipeline to form a circulation loop;
the heat pump units comprise a heat pump compressor 4.1, a heat pump oil separator 4.2 and a heat pump condenser 4.3 which are sequentially connected, wherein an outlet of a heat pump medium channel of the heat pump condenser is connected with a second inlet B of the gas-liquid separator through a connecting pipeline, and a water channel of the heat pump condenser 4.3 is connected with a cold water supply pipeline 6.
The inlet of the heat pump compressor 4.1 is connected with the second outlet D of the gas-liquid separator 5, so that the gaseous heat pump working medium separated by the gas-liquid separator 5 sequentially enters the heat pump medium channels of the heat pump oil separator 4.2 and the heat pump condenser 4.3 under the action of the heat pump compressor, exchanges heat with water flowing through the heat pump condenser, transfers heat generated by the refrigerating system to water, and recovers waste heat of the refrigerating system.
When in operation, gaseous refrigerant from the evaporator 3 enters the condensing evaporator 2 under the action of the compressor 13; the liquid heat pump working medium in the gas-liquid separator 5 enters the second channel of the condensing evaporator 2 from the first outlet C and exchanges heat with the gaseous refrigerant entering the condensing evaporator 2, the heat pump working medium absorbs heat to become gaseous, and the refrigerant becomes liquid after heat exchange and enters the evaporator 3; the gas heat pump working medium after heat exchange enters the gas-liquid separator 5 through the first inlet A for gas-liquid separation, the separated gas heat pump working medium enters the heat pump unit through the second outlet D for heat exchange with water (namely, the gas heat pump working medium separated by the gas-liquid separator 5 enters the heat pump oil separator 4.2 after being compressed by the heat pump compressor 4.1, enters the heat pump medium channel of the heat pump condenser 4.3 after oil removal by the heat pump oil separator 4.2 for heat exchange with water in the water channel flowing through the heat pump condenser 4.3), the gas heat pump working medium becomes liquid after heat exchange with water and enters the gas-liquid separator 5 through the second inlet B, and the liquid heat pump working medium entering the gas-liquid separator 5 enters the condensing evaporator 2 again for heat exchange with gaseous refrigerant, so that the recycling of the waste heat of the refrigerating system is realized, the utilization ratio of the waste heat of the refrigerating system is improved, and the energy conservation and the emission reduction are realized.
As can be seen from fig. 1, the water channels of the heat pump condensers 4.3 of the plurality of heat pump units are sequentially connected through the cold water supply pipeline 6, so that multistage continuous heating is realized, and the temperature of hot water is kept.
As can be seen from fig. 1, the outlets of the heat pump medium channels of the plurality of heat pump condensers 4.3 are connected with the second inlet B of the gas-liquid separator 5 through a connecting pipeline, and a main pipe of the connecting pipeline is provided with a second float valve 11 for throttling and decompressing; a first ball float valve 12 is arranged on a pipeline between the first outlet C of the gas-liquid separator 5 and the second medium channel of the evaporator 2, and throttling and decompression are performed.
As can be seen from fig. 1, the hot water supply system comprises a water tank 1 and a hot water supply pipeline 7 connected with the end of a cold water supply pipeline, wherein a water supply pump 8 and a control valve 9 (preferably an electric control valve) are arranged on the hot water supply pipeline 7, and the hot water can be pressurized and delivered to a living area by using the water supply pump 8 so as to meet the heat consumption demands of residents. For control, a liquid level sensor can be installed in the water tank 1, a valve 10 is installed at the water inlet end of the cold water supply pipeline 6, and water inlet is controlled by the valve 10. The signal output end of the liquid level sensor is connected with the signal input end of the PLC, the control output end of the PLC is electrically connected with the control input end of the valve 10, when the water level reaches the highest level, the valve 10 is closed to stop water inflow, the heat pump unit is stopped, and heating is stopped, so that overflow of the water tank is avoided.
It should be emphasized that the above description is merely a preferred embodiment of the present utility model, and the present utility model is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some of the technical features described in the above embodiments by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The utility model provides a cold chain refrigerating system waste heat utilization system, includes refrigerating system, its characterized in that: the refrigeration system comprises a condensation evaporator, an evaporator and a compressor, wherein gaseous refrigerant from the evaporator enters the condensation evaporator through the compressor to exchange heat with a liquid heat pump working medium of the heat pump system, so that the heat pump working medium is changed from liquid state to gaseous state;
the heat pump system comprises a plurality of groups of heat pump units and a gas-liquid separator, wherein the gas-liquid separator is provided with a first inlet and a first outlet, the first outlet is connected with the inlet of a second medium channel of the condensation evaporator through a pipeline, and the outlet of the second channel of the condensation evaporator is connected with the first inlet of the gas-liquid separator through a pipeline;
each group of heat pump units comprises a heat pump compressor, a heat pump oil separator and a heat pump condenser which are sequentially connected, wherein an outlet of a heat pump medium channel of the heat pump condenser is connected with a second inlet of the gas-liquid separator through a connecting pipeline, and a water channel of the heat pump condenser is connected with a cold water supply pipeline.
2. The cold chain refrigeration system waste heat utilization system of claim 1, wherein: the water channels of the heat pump condensers of the heat pump units are sequentially connected through the cold water supply pipeline, and the outlet of the cold water supply pipeline is connected with the hot water supply system.
3. The cold chain refrigeration system waste heat utilization system of claim 2, wherein: the hot water supply system comprises a water tank and a hot water supply pipeline arranged at the lower part of the water tank, and the hot water supply pipeline is also provided with a water supply pump and a control valve.
4. The cold chain refrigeration system waste heat utilization system of claim 1, wherein: a first ball float valve is arranged between the outlet of the condensation evaporator and the inlet of the evaporator; and a second ball float valve is arranged on a pipeline at the second inlet of the gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812539.1U CN219454310U (en) | 2023-04-13 | 2023-04-13 | Cold chain refrigerating system waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320812539.1U CN219454310U (en) | 2023-04-13 | 2023-04-13 | Cold chain refrigerating system waste heat utilization system |
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| Publication Number | Publication Date |
|---|---|
| CN219454310U true CN219454310U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320812539.1U Active CN219454310U (en) | 2023-04-13 | 2023-04-13 | Cold chain refrigerating system waste heat utilization system |
Country Status (1)
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| CN (1) | CN219454310U (en) |
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2023
- 2023-04-13 CN CN202320812539.1U patent/CN219454310U/en active Active
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