Cold and heat cogeneration device

Abstract

The cold and heat cogeneration device specifically comprises a refrigerating system and a heating system, the refrigerating system comprises a gas heat pump, a compressor, a condenser, a throttling valve and an evaporator, the gas heat pump is connected with the compressor, and the compressor, the condenser, the throttling valve and the evaporator are sequentially connected to form a circulation loop; a condensation water outlet of the condenser is connected with the heating system so that a water source can be provided for the heating system through the condenser, and a condensation water inlet of the condenser is connected with an external water source. According to the cold and heat cogeneration device, the condensation water outlet of the refrigerating system is connected with the heating system, the refrigerating system and the heating system are packaged into one device, a cooling tower needed by the refrigerating system is omitted, and the occupied space needed by the cold and heat cogeneration device is reduced. Meanwhile, the water source absorbing heat through the condenser is provided for the heating system, heat energy carried by condensate water can be utilized, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the field of natural gas technology, and in particular to a cooling and heating cogeneration device. Background Art

[0002] Natural gas refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the strata, and is one of the important energy sources. Using natural gas as an energy source can reduce the use of coal and oil, and improve environmental pollution problems; as a clean energy source, natural gas can reduce sulfur dioxide and dust emissions by nearly 100%, reduce carbon dioxide emissions by 60%, and nitrogen oxide emissions by 50%, and help reduce acid rain formation, slow down the global greenhouse effect, and fundamentally improve environmental quality.

[0003] Based on this, natural gas has been applied as an energy supply in many fields. In the field of food processing, natural gas is used for cooling and heating at the same time to ensure the cold source demand of the food processing environment and the hot water supply required for food processing. However, at present, it is generally necessary to use two independent cooling and heating systems to work at the same time to meet the needs of food processing. In this way, two systems need to be installed at the same time, and both the cooling and heating systems need to occupy a certain space, which leads to the problem of space waste.

[0004] Therefore the prior art still needs to be improved and enhanced. Utility Model Content

[0005] The technical problem to be solved by the present application is to provide a cooling and heating cogeneration device in view of the deficiencies of the prior art.

[0006] In order to solve the above technical problems, the first aspect of the present application provides a combined heat and cold production device, which specifically includes a refrigeration system and a heating system. The refrigeration system includes a gas heat pump, a compressor, a condenser, a throttle valve and an evaporator. The gas heat pump is connected to the compressor, and the compressor, condenser, throttle valve and evaporator are connected in sequence to form a circulation loop; the condensation water outlet of the condenser is connected to the heating system to provide a water source for the heating system through the condenser, and the condensation water inlet of the condenser is connected to an external water source.

[0007] The cooling and heating cogeneration device, wherein the heating system includes a burner and a heat exchanger connected to the burner, a heat exchange pipe is provided in the heat exchanger, and a water inlet of the heat exchange pipe is connected to the condensation water outlet through a pipe.

[0008] The described cogeneration device, wherein the heating system also includes a water supply pipe and a first control valve arranged on the water supply pipe, the water supply pipe is connected to the pipe water inlet of the heat exchange pipe; when the amount of inflow water flowing into the heating system through the condensation outlet meets the hot water demand, the first control valve is in a closed state; when the amount of inflow water flowing into the heating system through the condensation outlet does not meet the hot water demand, the first control valve is in a closed state.

[0009] The described combined cooling and heat production device, wherein the described combined cooling and heat production device also includes a water storage device, the water storage device is connected to the condenser water outlet through a pipeline, and a second control valve is provided on the connecting pipeline between the water storage device and the condenser water outlet; the water storage device is connected to the heating system through a pipeline, and a third control valve is provided on the pipeline between the water storage device and the heating system.

[0010] The cooling and heating cogeneration device comprises a shell, and the refrigeration system and the heating system are both arranged in the shell.

[0011] The described combined heat and cold generation device, wherein the described combined heat and cold generation device includes a main gas pipe, a first branch gas pipe and a second branch gas pipe; one end of the main gas pipe passes through the shell and is placed outside the shell to be connected to the gas source; the other end of the main gas pipe is respectively connected to the first branch gas pipe and the second branch gas pipe, the first branch gas pipe is connected to the gas heat pump, and the second branch gas pipe is connected to the heating system.

[0012] The cooling and heat cogeneration device, wherein the cooling and heat cogeneration device includes a first gas pipe and a second gas pipe, one end of the first gas pipe passes through the shell and is placed outside the shell, and the other end is connected to the gas heat pump; one end of the second gas pipe passes through the shell and is placed outside the shell, and the other end is connected to the heating system.

[0013] The cooling and heating cogeneration device, wherein the temperature of the inflow water flowing into the condenser through the condenser water inlet is 20-25°, and the temperature of the outflow water flowing out of the condenser through the condenser water outlet is 50-55°.

[0014] In the cooling and heating cogeneration device, the temperature of the inflow water flowing into the evaporator is 12°, and the temperature of the outflow water flowing out of the evaporator is 7°.

[0015] In the cooling and heating cogeneration device, the temperature of hot water produced by the heating system is 85-90°.

[0016] Beneficial effects: Compared with the prior art, the present application provides a combined cooling and heating device, which specifically includes a cooling system and a heating system. The cooling system includes a gas heat pump, a compressor, a condenser, a throttle valve and an evaporator. The gas heat pump is connected to the compressor, and the compressor, the condenser, the throttle valve and the evaporator are connected in sequence to form a circulation loop; the condensation outlet of the condenser is connected to the heating system to provide a water source for the heating system through the condenser, and the condensation inlet of the condenser is connected to an external water source. The present application encapsulates the cooling system and the heating system into one device by connecting the condensation outlet of the cooling system to the heating system, and omits the cooling tower required by the cooling system, thereby reducing the floor space required for the combined cooling and heating device. At the same time, the present application provides the water source that absorbs heat through the condenser to the heating system, so that on the one hand, there is no need to cool the condensed water flowing out of the condenser, and on the other hand, the heat energy carried by the condensed water can be used, thereby improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the combined cooling and heating device provided in an embodiment of the present application.

[0019] Figure 2 The cooling and heating cogeneration device provided in the embodiment of the present application includes an exemplary diagram of a shell.

[0020] Figure 3 The cooling and heating cogeneration device provided in the embodiment of the present application includes an example diagram of a water supply pipe.

[0021] Figure 4 An exemplary diagram of a combined cooling and heating device provided for an embodiment of the present application including a water storage device.

[0022] Figure 5 An exemplary diagram of a combined cooling and heating device provided in an embodiment of the present application includes a gas component. DETAILED DESCRIPTION

[0023] The embodiment of the present application provides a cooling and heating cogeneration device. In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0024] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0025] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0026] After research, it was found that natural gas refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the strata, and is one of the important energy sources. Using natural gas as an energy source can reduce the use of coal and oil, and can improve environmental pollution problems; as a clean energy source, natural gas can reduce sulfur dioxide and dust emissions by nearly 100%, reduce carbon dioxide emissions by 60% and nitrogen oxide emissions by 50%, and help reduce acid rain formation, slow down the global greenhouse effect, and fundamentally improve environmental quality.

[0027] Based on this, natural gas has been applied as an energy supply in many fields. In the field of food processing, natural gas is used for cooling and heating at the same time to ensure the cold source demand of the food processing environment and the hot water supply required for food processing. However, at present, it is generally necessary to use two independent cooling and heating systems to work at the same time to meet the needs of food processing. In this way, two systems need to be installed at the same time, and both the cooling and heating systems need to occupy a certain space, which leads to the problem of space waste.

[0028] In order to solve the above problems, in an embodiment of the present application, the combined cooling and heating device specifically includes a refrigeration system and a heating system, wherein the refrigeration system includes a gas heat pump, a compressor, a condenser, a throttle valve and an evaporator, wherein the gas heat pump is connected to the compressor, and the compressor, the condenser, the throttle valve and the evaporator are sequentially connected to form a circulation loop; the condensation outlet of the condenser is connected to the heating system to provide a water source for the heating system through the condenser, and the condensation inlet of the condenser is connected to an external water source. The present application encapsulates the refrigeration system and the heating system into one device by connecting the condensation outlet of the refrigeration system to the heating system, and omits the cooling tower required for the refrigeration system, thereby reducing the floor space required for the combined cooling and heating device. At the same time, the present application provides the heating system with a water source that absorbs heat through the condenser, so that on the one hand, there is no need to cool the condensed water flowing out of the condenser, and on the other hand, the heat energy carried by the condensed water can be used, thereby improving energy utilization.

[0029] The application content is further explained below through the description of embodiments in conjunction with the accompanying drawings.

[0030] This embodiment provides a cooling and heating cogeneration device, such as Figure 1 and Figure 2 As shown, the cooling and heating cogeneration device includes a shell 30, in which a refrigeration system 20 and a heating system 10 are arranged, and the refrigeration system 20 includes a gas heat pump 21, a compressor 22, a condenser 23, a throttle valve 24 and an evaporator 25, and the gas heat pump 21 is connected to the compressor 22, and the compressor 22, the condenser 23, the throttle valve 24 and the evaporator 25 are connected in sequence to form a circulation loop. The condenser 23 is provided with a condensation water inlet 26 and a condensation water outlet 27, and the condensation water inlet 26 is connected to an external water source (for example, tap water, etc.) through a pipeline, and the condensation water outlet 27 is connected to the heating system 10 through a pipeline to provide a water source for the heating system 10. That is to say, the water source inlet of the heating system 10 is connected to the water outlet of the condenser 23 through a pipe, so that the water source entering the condenser 23 through the condensation water inlet 26 can absorb heat in the condenser 23 and then flow into the heating system 10 through the condenser 23 outlet and the water source inlet, so that the heating system 10 can use the heat energy in the refrigeration system 20, improve the energy utilization rate, and then enable the combined heat and cold generation device to achieve energy-saving effects. At the same time, by directly allowing the water source flowing in through the water inlet of the condenser 23 to flow into the heating system 10 through the condenser 23 outlet, it is impossible to cool the water source flowing out of the condensation water outlet of the condenser and then return it to the condensation water inlet, saving the space required for the refrigeration system, and increasing the compactness between the heating system and the refrigeration system, so that the refrigeration system and the heating system can be configured in one shell to form an integrated structure, further saving the space occupied by the combined heat and cold generation device.

[0031] Further, if Figure 1 and 2 As shown, the heating system 10 includes a burner 11 and a heat exchanger 12, and the heat exchanger 12 is connected to the burner 11. The burner 11 generates heat by burning gas or natural gas, and the heat rises with the airflow to the heat exchanger 12 connected to the burner 11. A heat exchange pipe is arranged in the middle plate of the heat exchanger 12, and the pipe water inlet 13 of the heat exchange pipe is connected to the condensation water outlet 27 of the condenser 23. The water source flowing out of the condensation water outlet 27 flows into the heat exchange pipe through the pipe water inlet 13 to absorb heat in the heat exchanger 12 and increase the temperature, and hot water flows out from the pipe inlet and outlet of the heat exchange pipe for users to use. By connecting the pipe water inlet 13 of the heat exchange pipe with the condensation water outlet 27 of the condenser 23, the water source flowing into the pipe water inlet 13 can be preheated by the condenser 23 to increase the temperature of the water source flowing into the heat exchange pipe, thereby reducing the heat required for the water source to reach the hot water at the temperature required by the user, and further reducing the energy consumption of the heating system 10.

[0032] In one implementation of the present application, the combined cooling and heating device is applied to the field of food processing, and the temperature of the hot water flowing out of the pipe outlet is 85-95°, for example, 90°. When the refrigeration system 20 and the heating system 10 are independent, the temperature of the water source flowing into the pipe inlet 13 is 20-25°, for example, 22°, so the water source needs to absorb the heat required to increase from 22° to 90° in the heat exchanger 12; when the combined cooling and heating device provided by the fundamental application is used, the water source flowing into the pipe inlet 13 is the water source passing through the condenser 23, and the temperature of the water source flowing out of the condensation outlet 27 of the condenser 23 is 50-55°, for example, 52°, so the water source needs to absorb the heat required to increase from 52° to 90° in the heat exchanger 12, and the required heat is significantly reduced, thereby reducing the energy consumption of the heating system 10. As for the refrigeration system 20, the energy required by the refrigeration system 20 does not change, so the combined cooling and heating device plays a role in saving energy. Based on this, in an embodiment of the present application, the temperature of the inflow water flowing into the condenser 23 through the condenser water inlet is 20-25°, the temperature of the outflow water flowing out of the condenser 23 through the condensation water outlet 27 is 50-55°, and the temperature of the hot water produced by the heating system 10 is 85-90°; the temperature of the inflow water flowing into the evaporator 25 is 12°, and the temperature of the outflow water flowing out of the evaporator 25 is 7°.

[0033] In one implementation of the present application, the working time period of the refrigeration system 20 may be partially out of sync with the working time period of the heating system 10, or the amount of water from the source flowing through the condenser 23 in the refrigeration system 20 may be different from the amount of water required by the heating system 10, and the amount of water from the source flowing through the condenser 23 in the refrigeration system 20 into the heating system 10 may be less than the amount of water required by the heating system 10. Based on this, Figure 3 As shown, the heating system 10 further includes a water supply pipe 90 and a first control valve disposed on the water supply pipe 90, wherein the water supply pipe 90 is connected to the pipe water inlet 13 of the heat exchange pipe; when the amount of water flowing into the heating system 10 through the condensation water outlet 27 meets the hot water demand, the first control valve is in a closed state; when the amount of water flowing into the heating system 10 through the condensation water outlet 27 does not meet the hot water demand, the first control valve is in a closed state. In this way, when the refrigeration system 20 cannot meet the water demand of the heating system 10, the water supply pipe 90 can be connected to a water source (e.g., tap water, etc.) to replenish water for the heating system 10, so that the heating system 10 can meet the user's hot water demand. Of course, in actual applications, the first control valve can be a flow control valve, which is used to control the flow of the water supply pipe 90, and the opening and closing degree of the flow control valve can be determined according to the water required by the heating system 10 and the water that can be provided by the refrigeration system 20, so that the amount of water flowing into the heating system 10 through the water supply pipe 90 and the refrigeration system 20 can meet user needs.

[0034] In one implementation of the present application, the working time period of the refrigeration system 20 may be partially out of sync with the working time period of the heating system 10, or the amount of water from the source flowing through the condenser 23 in the refrigeration system 20 may be different from the amount of water required by the heating system 10, and the amount of water from the source flowing through the condenser 23 in the refrigeration system 20 into the heating system 10 may be greater than the amount of water required by the heating system 10. Based on this, Figure 4 As shown, the cooling and heating cogeneration device further includes a water storage device 100, which has a heat preservation function. For example, the water storage device 100 includes a shell 30, and the shell 30 has a receiving cavity for storing water; a heat preservation layer is arranged outside the shell 30 to achieve the heat preservation function; or, the storage device includes a shell 30 with a receiving cavity, and the shell 30 includes an inner shell and an outer shell, and a vacuum layer is arranged between the inner shell and the outer shell. A water inlet and a water outlet are arranged on the water storage device 100, and the water inlet is connected to the condensation water outlet 27 through a pipeline, and the water outlet is connected to the pipeline water inlet 13 of the heat exchanger 12 through a pipeline, so that the water storage device 100 can be used as a storage device for the excess water generated by the refrigeration system 20, and the stored water source can be used as a supplementary water source for the heating system 10.

[0035] In order to control the connection between the water storage device 100 and the refrigeration system 20 and the heating system 10, a second control valve is provided on the pipeline between the water storage device 100 and the condensation water outlet 27, and a third control valve is provided on the pipeline between the water storage device 100 and the heating system 10. When the amount of water provided by the condenser 23 is more than the amount of water required by the heating system 10, the second control valve is opened and the third control valve is closed; when the amount of water provided by the condenser 23 is less than or equal to the amount of water required by the heating system 10, the second control valve is closed, and when there is water in the water storage device 100, the third control valve is opened. Of course, it should be noted that both the second control valve and the third control valve can be flow control valves, and the flow rate of water flowing into and out of the water storage device 100 can be adjusted by adjusting the degree of opening and closing.

[0036] Furthermore, the refrigeration system 20 and the heating system 10 may both use gas or natural gas as energy, or one of the refrigeration system 20 and the heating system 10 may use natural gas or natural gas as energy, and the other may use other energy (e.g., electric energy, etc.), or neither of them may use natural gas or natural gas as energy, etc. In the embodiment of the present application, the refrigeration system 20 and the heating system 10 may both use gas or natural gas as energy, and accordingly, the combined cooling and heating device further includes a gas pipe assembly, and the refrigeration system 20 and the heating system 10 are connected to the gas or natural gas supply port through the gas pipe assembly to provide energy for the refrigeration system 20 and the heating system 10.

[0037] In one implementation, if Figure 5 As shown, the gas pipe assembly includes a main gas pipe 60, a first branch gas pipe 70 and a second branch gas pipe 80; one end of the main gas pipe 60 passes through the shell 30 and is placed outside the shell 30 to connect with the gas source; the other end of the main gas pipe 60 is connected to the first branch gas pipe 70 and the second branch gas pipe 80 respectively, the first branch gas pipe 70 is connected to the gas heat pump 21, and the second branch gas pipe 80 is connected to the heating system 10, so that the air intake of the refrigeration system 20 and the heating system 10 can be controlled synchronously by controlling the main gas pipe 60, and a gas pipe through hole needs to be provided on the shell 30 to improve the sealing of the cold and heat cogeneration device. Of course, in order to control the air intake of the refrigeration system 20 and the heating system 10, the main gas pipe 60, the first branch gas pipe 70 and the second branch gas pipe 80 can be provided with gas control valves respectively.

[0038] In one implementation, if Figure 2-4As shown, the gas pipe assembly includes a first gas pipe 50 and a second gas pipe 40, one end of the first gas pipe 50 passes through the shell 30 and is placed outside the shell 30, and the other end is connected to the gas heat pump 21; one end of the second gas pipe 40 passes through the shell 30 and is placed outside the shell 30, and the other end is connected to the heating system 10. This implementation can independently control the gas volume of the refrigeration system 20 and the heating system 10, and there will be no problem between the refrigeration system 20 and the heating system 10 that the gas consumption of one of the refrigeration system 20 and the heating system 10 suddenly increases and causes insufficient gas consumption of the other. Of course, the first gas pipe 50 and the second gas pipe 40 can be respectively provided with gas control valves.

[0039] In summary, the present embodiment provides a combined cooling and heating device, which specifically includes a refrigeration system and a heating system. The refrigeration system includes a gas heat pump, a compressor, a condenser, a throttle valve and an evaporator. The gas heat pump is connected to the compressor, and the compressor, the condenser, the throttle valve and the evaporator are connected in sequence to form a circulation loop; the condensation outlet of the condenser is connected to the heating system to provide a water source for the heating system through the condenser, and the condensation inlet of the condenser is connected to an external water source. The present application encapsulates the refrigeration system and the heating system into one device by connecting the condensation outlet of the refrigeration system to the heating system, and omits the cooling tower required for the refrigeration system, thereby reducing the floor space required for the combined cooling and heating device. At the same time, the present application can utilize the heat energy carried by the condensed water by providing the water source that absorbs heat through the condenser to the heating system, thereby improving energy utilization.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cooling and heating cogeneration device, characterized in that: The cooling and heating cogeneration device specifically includes a refrigeration system and a heating system. The refrigeration system includes a gas heat pump, a compressor, a condenser, a throttle valve and an evaporator. The gas heat pump is connected to the compressor, and the compressor, condenser, throttle valve and evaporator are connected in sequence to form a circulation loop; the condensation water outlet of the condenser is connected to the heating system to provide a water source for the heating system through the condenser, and the condensation water inlet of the condenser is connected to an external water source.

2. The cooling and heating cogeneration device according to claim 1, characterized in that: The heating system comprises a burner and a heat exchanger connected to the burner. A heat exchange pipe is arranged in the heat exchanger. The water inlet of the heat exchange pipe is connected to the condensation water outlet through a pipe.

3. The cooling and heating cogeneration device according to claim 2, characterized in that: The heating system also includes a water supply pipe and a first control valve arranged on the water supply pipe, wherein the water supply pipe is connected to the water inlet of the heat exchange pipe; when the amount of inflow water flowing into the heating system through the condensation outlet meets the hot water demand, the first control valve is in a closed state; when the amount of inflow water flowing into the heating system through the condensation outlet does not meet the hot water demand, the first control valve is in a closed state.

4. The cooling and heating cogeneration device according to claim 1, characterized in that: The combined cooling and heating device also includes a water storage device, which is connected to the water outlet of the condenser through a pipeline, and a second control valve is provided on the connecting pipeline between the water storage device and the water outlet of the condenser; the water storage device is connected to the heating system through a pipeline, and a third control valve is provided on the pipeline between the water storage device and the heating system.

5. The cooling and heating cogeneration device according to claim 1, characterized in that: The cooling and heating cogeneration device comprises a shell, and the refrigeration system and the heating system are both arranged in the shell.

6. The cooling and heating cogeneration device according to claim 5, characterized in that: The combined cooling and heating device includes a main gas pipe, a first branch gas pipe and a second branch gas pipe; one end of the main gas pipe passes through the shell and is placed outside the shell to be connected to the gas source; the other end of the main gas pipe is respectively connected to the first branch gas pipe and the second branch gas pipe, the first branch gas pipe is connected to the gas heat pump, and the second branch gas pipe is connected to the heating system.

7. The cooling and heating cogeneration device according to claim 6, characterized in that: The combined cooling and heating device includes a first gas pipe and a second gas pipe, wherein one end of the first gas pipe passes through the shell and is placed outside the shell, and the other end is connected to the gas heat pump; one end of the second gas pipe passes through the shell and is placed outside the shell, and the other end is connected to the heating system.

8. The cooling and heating cogeneration device according to claim 1, characterized in that: The temperature of the inflow water flowing into the condenser through the condenser water inlet is 20-25°, and the temperature of the outflow water flowing out of the condenser through the condenser water outlet is 50-55°.

9. The cooling and heating cogeneration device according to claim 1, characterized in that: The inlet water temperature flowing into the evaporator is 12°, and the outlet water temperature flowing out of the evaporator is 7°.

10. The cooling and heating cogeneration device according to claim 1, characterized in that: The temperature of hot water produced by the heating system is 85-90°.

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