Heat recovery air source heat pump device

Abstract

The utility model discloses a heat recovery air source heat pump device which comprises an exhaust hood, a heat recovery ventilation module, an exhaust fan, a frequency conversion compressor, a temperature control electronic expansion valve, a water side heat exchange coil pipe, a ventilation pipe and a module cleaning tank which are connected through a refrigerant pipe. The number of the heat recovery ventilation modules is two, the input end of the frequency conversion compressor is connected to the output ends of the heat recovery ventilation modules, and the output end of the frequency conversion compressor is connected to the input end of the water side heat exchange coil pipe. After the device is utilized, waste heat can be processed into a high-level energy source through operation of the heat pump, the high-level energy source is used for heating water for tableware and vegetable cleaning and waste recycling, and the device achieves the energy-saving and heat supply effects through low energy consumption and full utilization of the waste heat and is particularly suitable for winter.

Description

Technical Field

[0001] The utility model relates to the technical field of energy saving, in particular to a heat recovery air source heat pump device. Background Art

[0002] According to the technical characteristics of air source heat pump devices, the air source devices currently circulating in the market are mainly: high-temperature side heat exchanger, low-temperature side heat exchanger, compressor, expansion valve, electronic control unit integrated into one device, using natural environmental conditions to achieve cooling and heating purposes. This type of device is subject to environmental conditions, especially when heating is needed in winter, the ambient temperature is relatively low, resulting in a great impact on the heating capacity of this type of product in winter. For this reason, we propose a heat recovery heat pump device. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a heat recovery air source heat pump device, which has a simple structure and flexible combination. It has a more refined professional division of labor in air source heat pump technology, and expands the air source heat pump equipment to have a high efficiency energy efficiency ratio output when obtaining stable low-level energy, so as to achieve stable operation in special places, and at the same time has good green energy saving and environmental protection significance.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A heat recovery air source heat pump device includes a kitchen exhaust hood, a heat recovery ventilation module, an exhaust fan, a variable frequency compressor, a temperature-controlled electronic expansion valve, a water-side heat exchange coil, a ventilation pipe, a module cleaning tank and a refrigerant pipe. The heat recovery ventilation module is installed on the top of the kitchen exhaust hood, and a ventilation pipe is installed on the upper end of the heat recovery ventilation module; the other end of the ventilation pipe is connected to the exhaust fan; the heat recovery ventilation modules are connected in series.

[0006] Both ends of the heat recovery ventilation module, the variable frequency compressor, the temperature control electronic expansion valve, and the water-side heat exchange coil are welded with refrigerant pipe threaded connection heads, and the refrigerant pipes are connected through the refrigerant pipe threaded connection heads.

[0007] The input end of the variable frequency compressor is connected to the output end of the heat recovery ventilation module through a refrigerant pipe; the output end of the variable frequency compressor is connected to the input end of the water side heat exchange coil through a refrigerant pipe, and a refrigerant branch pipe is installed in the middle section of the refrigerant pipe; the output end of the water side heat exchange coil is connected to the input end of the temperature control electronic expansion valve through a refrigerant pipe; the output end of the temperature control electronic expansion valve is connected to the input end of the heat recovery ventilation module through a refrigerant pipe.

[0008] There are several (3-6) module cleaning tanks, and the water-side heat exchange coils are seamless copper coils, and there are several (3-6) of them. Each of the water-side heat exchange coils is installed inside each module cleaning tank.

[0009] Among them, the heat recovery ventilation module 2, the exhaust fan 3 and the ventilation pipe 8 constitute a waste heat recovery module.

[0010] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0011] 1. The device has the function of energy saving: the device is created based on the principle of waste heat recovery and utilization, so it has a high energy saving rate. The exhaust gas emission of the kitchen stove, when there is no device, the waste heat is basically discharged into the outdoor environment atmosphere and has no value. After using the device, the waste heat can be processed into a high-level energy by the heat pump operation, which is used to heat water for tableware, vegetable washing, and waste recycling to serve the society. Although the device needs to consume a certain amount of energy, compared with heat pump products without waste heat utilization, the energy saving of the device is obvious, especially in winter.

[0012] 2. The device has the function of flexible combination: the device consists of three independent parts: heat recovery ventilation module 2, exhaust fan 3 and ventilation pipe 8, waste heat recovery module, heat pump (variable frequency compressor and temperature-controlled electronic expansion valve), and cleaning tank module with water-side heat exchange coil installed. Different quantities can be combined on demand at the practical site, which is less affected by the site environment. The three parts are connected by refrigerant pipes and are easy to install. The waste heat recovery module can be connected to most types of exhaust equipment, and its special structure does not affect the smooth exhaust.

[0013] 3. The device is environmentally friendly, has no waste gas emissions, and is green and environmentally friendly.

[0014] 4. The overall design concept of the device is clear. It optimizes the shortcomings of the equipment currently circulating on the market. It can be manufactured into finished products and combined on demand. Different module combination products can be customized according to the size of the kitchen to meet various needs.

[0015] 5. This device is suitable for all kinds of kitchens. Because it has many advantages such as energy saving, environmental protection and safety, it is an ideal equipment to replace energy-intensive and complicated management. At the same time, its modular design and flexible assembly make it simple and clear. Users only need to connect the refrigerant pipe and power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a heat recovery air source heat pump device;

[0017] Figure 2 Schematic diagram of the water side heat exchange coil structure.

[0018] Among them: 1. Kitchen exhaust hood; 2. Heat recovery ventilation module; 3. Exhaust fan; 4. Variable frequency compressor; 5. Temperature control electronic expansion valve; 6. Refrigerant branch pipe; 7. Water side heat exchange coil; 8. Ventilation pipe; 9. Module cleaning tank. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0020] like Figure 1 As shown, a heat recovery air source heat pump device includes a kitchen exhaust hood 1, a heat recovery ventilation module 2, an exhaust fan 3, a variable frequency compressor 4, a temperature-controlled electronic expansion valve 5, a refrigerant branch pipe 6, a water-side heat exchange coil 7, a ventilation pipe 8, and a module cleaning tank 9.

[0021] Both ends of the heat recovery ventilation module 2, the variable frequency compressor 4, the temperature control electronic expansion valve 5, and the water-side heat exchange coil 7 are welded with refrigerant pipe threaded connection heads, and the refrigerant pipes are connected through the refrigerant pipe threaded connection heads.

[0022] The kitchen exhaust hood 1 is an existing object, and two heat recovery ventilation modules 2 are connected in series. A ventilation pipe 8 is installed on the upper end of the upper heat recovery ventilation module 2; the other end of the ventilation pipe 8 is connected to the exhaust fan 3, and the exhaust fan 3 is an existing exhaust fan in the kitchen;

[0023] The input end of the variable frequency compressor 4 is connected to the output end of the heat recovery ventilation module 2 through a refrigerant pipe, the output end of the variable frequency compressor 4 is connected to the input end of the water-side heat exchange coil 7 through a refrigerant pipe, and a refrigerant branch pipe 6 is installed in the middle section of the refrigerant pipe; the output end of the water-side heat exchange coil 7 is connected to the input end of the temperature-controlled electronic expansion valve 5 through a refrigerant pipe, and the output end of the temperature-controlled electronic expansion valve 5 is connected to the input end of the heat recovery ventilation module 2 through a refrigerant pipe; the output end of the variable frequency compressor 4 is connected to the input end of the water-side heat exchange coil 7 through the refrigerant branch pipe 6, forming a refrigerant closed compression cycle system.

[0024] Among them, the heat recovery ventilation module 2, the exhaust fan 3 and the ventilation pipe 8 constitute a waste heat recovery module; the variable frequency compressor 4 and the temperature control electronic expansion valve 5 constitute a heat pump system.

[0025] The five refrigerant pipe sections, namely the variable frequency compressor 4, the temperature-controlled electronic expansion valve 5, the refrigerant branch pipe 6 and the water-side heat exchange coil 7, are high-pressure refrigerant pipe sections, namely, the condensation section (heat release).

[0026] The temperature-controlled electronic expansion valve 5, the heat recovery ventilation module 2, the exhaust fan 3, and the variable frequency compressor 4, these four parts of the refrigerant pipe section are low-pressure refrigerant pipe sections, namely, the evaporation section (heat absorption).

[0027] The water-side heat exchange coil 7 is installed inside the module cleaning tank 9. When the water temperature reaches the set temperature, the heat pump heating system stops working. The exhaust fan 3 exhaust is controlled by the kitchen exhaust command, and the logical relationship is: ① The exhaust fan 3 is turned on, and the circulation of the heat pump system is turned on. ② The exhaust fan 3 is turned off, and the circulation of the heat pump system stops. ③ The exhaust fan 3 is turned on, and the circulation of the heat pump system is turned on. When the temperature in the module cleaning tank 9 reaches the set temperature (the set temperature is preset according to the actual situation), the circulation of the heat pump system stops. When the temperature is lower than the set water temperature (when hot water is delivered to the user to supplement cold water), the circulation of the heat pump system is turned on.

[0028] This device utilizes the principle of Carnot refrigerant cycle to obtain stable heat energy from the heat recovery ventilation module, compresses the refrigerant through the variable frequency compressor 4 and converts it into high-temperature heat energy to release heat in the water-side heat exchange coil 7, so as to heat the water in the module cleaning tank 9. After the water in the cleaning tank reaches the set temperature (the set temperature is set according to actual needs), the refrigerant compression cycle stops working, and the exhaust fan 3 exhausts air without being affected by the refrigerant cycle and operates according to the exhaust instruction.

[0029] The device consists of three independent parts: a waste heat recovery module, a heat pump (a variable frequency compressor 4 and a temperature-controlled electronic expansion valve 5), and a cleaning tank module 9 equipped with a water-side heat exchange coil 7.

[0030] The waste heat recovery module utilizes the waste heat discharged from the kitchen stove. Under the action of the evaporation of the refrigerant, the low-grade waste heat is compressed into high-temperature refrigerant (condensed) by the variable frequency compressor 4, so as to replenish water in the cleaning tank module 9, provide stable warm water for washing dishes after meals, save additional heating energy, and can be modularized according to the scale. The scale of application can be large or small, and combined as needed. The variable frequency compressor adjusts its own output flow according to the temperature setting of each cleaning tank module 9 to optimize the energy consumption of the input power.

[0031] The device has the function of energy saving: the device is based on the principle of waste heat recovery and utilization, so it has a high energy saving rate. The exhaust gas emission of the kitchen stove is basically discharged into the outdoor environment without this device, and has no value. After using this device, the waste heat can be processed into a high-level energy by the heat pump operation to heat water for tableware, vegetable washing, and waste recycling to serve the society. Although the device needs to consume a certain amount of energy, compared with heat pump products without waste heat utilization, the energy saving of this device is obvious. Especially in winter.

[0032] The device has the function of flexible combination: the device consists of three independent parts: waste heat recovery ventilation module, heat pump (variable frequency compressor 4 and temperature control electronic expansion valve 5), and cleaning tank module 9 equipped with water-side heat exchange coil 7. Different quantities can be combined on demand at the practical site, which is less affected by the site environment. The three parts are connected by refrigerant copper pipes, which is easy to install. The waste heat recovery ventilation module can be connected to most types of exhaust equipment, and its special structure does not affect the smooth exhaust.

[0033] The device is environmentally friendly, has no waste gas emissions, and is green and environmentally friendly.

[0034] The overall design concept of the device is clear. It optimizes the shortcomings of the equipment currently circulating on the market. It can be manufactured into finished products and combined on demand. Different module combination products can be customized according to the size of the kitchen to meet various needs.

[0035] The device is suitable for all kinds of kitchens. Because it has many advantages such as energy saving, environmental protection and safety, it is an ideal equipment to replace energy-intensive and complicated management. At the same time, its modular design and flexible assembly make it simple and clear. Users only need to connect the refrigerant pipe and power supply.

[0036] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A heat recovery air source heat pump device, comprising a kitchen exhaust hood (1), a heat recovery ventilation module (2), an exhaust fan (3), a variable frequency compressor (4), a temperature control electronic expansion valve (5), a water side heat exchange coil (7), a ventilation pipe (8), a module cleaning tank (9) and a refrigerant pipe, characterized in that: The heat recovery ventilation module (2) is installed on the top of the exhaust hood (1), and a ventilation pipe (8) is installed on the upper end of the heat recovery ventilation module (2); the other end of the ventilation pipe (8) is connected to the exhaust fan (3); the heat recovery ventilation module (2), the variable frequency compressor (4), the temperature control electronic expansion valve (5), and the water side heat exchange coil (7) are welded with refrigerant pipe threaded connection heads at both ends, and the refrigerant pipes are connected through the refrigerant pipe threaded connection heads; the input end of the variable frequency compressor (4) is connected to the output end of the heat recovery ventilation module (2). The ends are connected via a refrigerant pipe, the output end of the variable frequency compressor (4) is connected to the input end of the water side heat exchange coil (7) via a refrigerant pipe, and a refrigerant branch pipe (6) is installed in the middle section of the refrigerant pipe between the output end of the variable frequency compressor (4) and the input end of the water side heat exchange coil (7); the output end of the water side heat exchange coil (7) is connected to the input end of the temperature control electronic expansion valve (5) via a refrigerant pipe, and the output end of the temperature control electronic expansion valve (5) is connected to the input end of the heat recovery ventilation module (2) via a refrigerant pipe.

2. A heat recovery air source heat pump device according to claim 1, characterized in that: There are 3 to 6 module cleaning tanks (9), and there are 3 to 6 water-side heat exchange coils (7). Each water-side heat exchange coil (7) is installed inside each module cleaning tank (9).

3. A heat recovery air source heat pump device according to claim 1, characterized in that: The heat recovery ventilation modules (2) are two connected in series.

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