Cold and hot water co-production device

Abstract

The utility model provides a cold and hot water co-production device which comprises a compressor, a condenser, an evaporator and an expansion valve, an inlet of the compressor is communicated with an outlet of the evaporator, an outlet of the compressor is communicated with an inlet of the condenser, and an outlet of the condenser is communicated with an inlet of the evaporator through the expansion valve. A containing cavity is formed in the first shell, the first heat exchange part and the condenser are located in the containing cavity of the first shell, and an inlet of the first heat exchange part is used for water inflow; an inlet of the first water storage tank is communicated with an outlet of the first heat exchange part; a containing cavity is formed in the second shell, the second heat exchange part and the evaporator are located in the containing cavity of the second shell, and an inlet of the second heat exchange part is used for water inflow; and an inlet of the second water storage tank communicates with an outlet of the second heat exchange part. The embodiment of the utility model can improve the energy utilization rate.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing equipment, in particular to a cold and hot water cogeneration device. Background Art

[0002] In beer production technology, cold water is needed to cool the wort, and hot water is needed to sterilize the beer. In related technologies, cold water is usually produced by an ammonia refrigeration machine, and hot water is produced by electric heating. However, in related technologies, the production of cold water and hot water is not carried out simultaneously, and the heat released by the preparation of cold water is not utilized in the production of hot water, resulting in low energy utilization in the production of cold water and hot water.

[0003] It can be seen that the related technology has the problem of low energy utilization rate in the process of producing cold water and hot water. Utility Model Content

[0004] The embodiment of the utility model provides a cold and hot water cogeneration device to solve the problem of low energy utilization rate in the process of producing cold water and hot water in the related art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a cold and hot water cogeneration device, comprising:

[0006] A compressor, a condenser, an evaporator and an expansion valve, wherein the inlet of the compressor is communicated with the outlet of the evaporator, the outlet of the compressor is communicated with the inlet of the condenser, and the outlet of the condenser is communicated with the inlet of the evaporator through the expansion valve;

[0007] A first shell and a first heat exchange element, wherein a receiving cavity is provided in the first shell, the first heat exchange element and the condenser are located in the receiving cavity of the first shell, and an inlet of the first heat exchange element is used for water inlet;

[0008] a first water storage tank, wherein an inlet of the first water storage tank is in communication with an outlet of the first heat exchange element;

[0009] A second shell and a second heat exchange element, wherein a receiving chamber is provided in the second shell, the second heat exchange element and the evaporator are located in the receiving chamber of the second shell, and an inlet of the second heat exchange element is used for water inlet;

[0010] A second water storage tank, wherein the inlet of the second water storage tank is communicated with the outlet of the second heat exchange element.

[0011] In one embodiment, the cold and hot water cogeneration device further comprises:

[0012] The third water storage tank;

[0013] a first water pump, wherein an inlet of the first water pump is connected to an outlet of the third water storage tank;

[0014] A first regulating valve, wherein the inlet of the first regulating valve is communicated with the outlet of the first water pump, and the outlet of the first regulating valve is communicated with the inlet of the second heat exchange element.

[0015] In one embodiment, the cold and hot water cogeneration device further comprises:

[0016] a first temperature sensor, wherein the first temperature sensor is fixed to an outlet of the second heat exchange element;

[0017] a second regulating valve, wherein the inlet of the second regulating valve is communicated with the outlet of the second heat exchange element, and the outlet of the second regulating valve is communicated with the inlet of the first water pump;

[0018] A third regulating valve, wherein the inlet of the third regulating valve is communicated with the outlet of the second heat exchange element, and the outlet of the third regulating valve is communicated with the inlet of the second water storage tank.

[0019] In one embodiment, the cold and hot water cogeneration device further comprises:

[0020] a second temperature sensor, the second temperature sensor being fixed to an inlet of the second heat exchange element;

[0021] A first heat energy meter, wherein a first signal end of the first heat energy meter is electrically connected to the first temperature sensor, and a second signal end of the first heat energy meter is electrically connected to the second temperature sensor.

[0022] In one embodiment, a first pressure sensor is disposed at the outlet of the first water pump.

[0023] In one embodiment, the third water storage tank is provided with a liquid level transmitter.

[0024] In one embodiment, the cold and hot water cogeneration device further comprises:

[0025] An oil separator, wherein the inlet of the oil separator is communicated with the outlet of the compressor, the first outlet of the oil separator is communicated with the inlet of the condenser, and the second outlet of the oil separator is communicated with the inlet of the compressor.

[0026] In one embodiment, the cold and hot water cogeneration device further comprises:

[0027] a second water pump, wherein the inlet of the second water pump is used for water intake;

[0028] A fourth regulating valve, wherein the inlet of the fourth regulating valve is communicated with the outlet of the second water pump, and the outlet of the fourth regulating valve is communicated with the inlet of the first heat exchange element.

[0029] In one embodiment, the cold and hot water cogeneration device further comprises:

[0030] a third temperature sensor, the third temperature sensor being fixed to an inlet of the first heat exchange element;

[0031] a fourth temperature sensor, the fourth temperature sensor being fixed to the outlet of the first heat exchange element;

[0032] A second heat energy meter, wherein a first signal terminal of the second heat energy meter is electrically connected to the third temperature sensor, and a second signal terminal of the second heat energy meter is electrically connected to the fourth temperature sensor.

[0033] In one embodiment, a second pressure sensor is disposed at the outlet of the second water pump.

[0034] One of the above technical solutions has the following advantages or beneficial effects:

[0035] In the embodiment of the utility model, the cold and hot water cogeneration device includes: a compressor, a condenser, an evaporator and an expansion valve, the inlet of the compressor is connected to the outlet of the evaporator, the outlet of the compressor is connected to the inlet of the condenser, and the outlet of the condenser is connected to the inlet of the evaporator through the expansion valve; a first shell and a first heat exchange element, the first shell is provided with a containing cavity, the first heat exchange element and the condenser are located in the containing cavity of the first shell, and the inlet of the first heat exchange element is used for water inlet; a first water storage tank, the inlet of the first water storage tank is connected to the outlet of the first heat exchange element; a second shell and a second heat exchange element, the second shell is provided with a containing cavity, the second heat exchange element and the evaporator are located in the containing cavity of the second shell, and the inlet of the second heat exchange element is used for water inlet; a second water storage tank, the inlet of the second water storage tank is connected to the outlet of the second heat exchange element. In this way, the first heat exchange element and the condenser are heat exchanged to realize the preparation of hot water, the second heat exchange element and the evaporator are heat exchanged to realize the preparation of cold water, and the heat is transferred between the condenser and the evaporator through the compressor and the expansion valve, thereby effectively reducing the heat loss and improving the energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 It is a schematic diagram of a cold and hot water cogeneration device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1 As shown, the embodiment of the utility model provides a cold and hot water cogeneration device, comprising:

[0040] A compressor 10, a condenser 11, an evaporator 12 and an expansion valve 13, wherein the inlet of the compressor 10 is communicated with the outlet of the evaporator 12, the outlet of the compressor 10 is communicated with the inlet of the condenser 11, and the outlet of the condenser 11 is communicated with the inlet of the evaporator 12 through the expansion valve 13;

[0041] A first shell 20 and a first heat exchange element 30, wherein the first shell 20 is provided with an accommodating cavity, the first heat exchange element 30 and the condenser 11 are located in the accommodating cavity of the first shell 20, and the inlet of the first heat exchange element 30 is used for water inlet;

[0042] a first water storage tank 40, wherein an inlet of the first water storage tank 40 is in communication with an outlet of the first heat exchange element 30;

[0043] A second shell 21 and a second heat exchange element 31, wherein a housing cavity is provided in the second shell 21, the second heat exchange element 31 and the evaporator 12 are located in the housing cavity of the second shell 21, and an inlet of the second heat exchange element 31 is used for water inlet;

[0044] The second water storage tank 41 has an inlet connected to an outlet of the second heat exchange element 31 .

[0045] The compressor 10 is used to compress the working fluid in the first state to obtain the working fluid in the second state. The temperature of the working fluid in the second state is greater than the temperature of the working fluid in the first state, and the pressure of the working fluid in the second state is greater than the pressure of the working fluid in the first state, that is, the working fluid in the first state is a low-temperature and low-pressure working fluid, and the working fluid in the second state is a high-temperature and high-pressure working fluid. The low-temperature and low-pressure working fluid is compressed into a high-temperature and high-pressure working fluid through the compressor 10. The working fluid may be a refrigerant, such as Freon. Optionally, the compressor 10 may operate during off-peak electricity price periods to reduce the electricity price cost when the compressor 10 is operating.

[0046] The condenser 11 is used to condense the working fluid in the second state to form a working fluid in the third state. The temperature of the working fluid in the third state is lower than the temperature of the working fluid in the second state. The pressure of the working fluid in the third state is the same as or similar to the pressure of the working fluid in the second state (the pressure difference is less than the set pressure threshold), that is, the working fluid in the third state is a low-temperature and high-pressure working fluid. In the process of converting the working fluid in the second state (high temperature and high pressure) into the working fluid in the third state (low temperature and high pressure) through the condenser 11, heat is released, heat is exchanged with the first heat exchange element 30, and the water in the first heat exchange element 30 is heated to prepare hot water.

[0047] The expansion valve 13 is used to deliver the working medium in the third state to the evaporator 12. The expansion valve 13 can be used to throttle and reduce the pressure of the working medium and adjust the flow rate. By arranging the expansion valve 13 between the condenser 11 and the evaporator 12, the working medium in the third state can enter the evaporator 12 by expansion and diffusion, thereby realizing the circulation of the working medium.

[0048] The evaporator 12 is used to evaporate the working medium in the third state to obtain the working medium in the first state, absorb heat during the evaporation process, perform heat exchange with the second heat exchange element 31, and refrigerate the water in the second heat exchange element 31 to prepare cold water.

[0049] The above-mentioned first heat exchange element 30 and condenser 11 are located in the accommodating cavity of the first shell 20. The first shell 20 is used to isolate the external environment from the first heat exchange element 30 and the condenser 11. During the heat exchange between the first heat exchange element 30 and the condenser 11, less energy loss is achieved, which can further improve the energy utilization rate.

[0050] The above-mentioned second heat exchange element 31 and evaporator 12 are located in the accommodating cavity of the second shell 21. The second shell 21 is used to isolate the external environment from the second heat exchange element 31 and the evaporator 12. During the heat exchange between the second heat exchange element 31 and the evaporator 12, less energy loss is achieved, which can further improve the energy utilization rate.

[0051] In some embodiments, the first heat exchange element 30 may be a spiral structure, which is sleeved on the outer surface of the condenser 11, and the efficiency of heat exchange between the first heat exchange element 30 and the condenser 11 is improved by increasing the heat exchange time between the water in the first heat exchange element 30 and the condenser 11.

[0052] In some embodiments, the first heat exchange element 30 may be a zigzag structure, which abuts against the outer surface of the condenser 11, thereby increasing the heat exchange time between the water in the first heat exchange element 30 and the condenser 11 to improve the efficiency of the heat exchange between the first heat exchange element 30 and the condenser 11.

[0053] In some embodiments, the second heat exchange element 31 can be a spiral structure, which is sleeved on the outer surface of the evaporator 12, and the efficiency of heat exchange between the second heat exchange element 31 and the evaporator 12 is improved by increasing the heat exchange time between the water in the second heat exchange element 31 and the evaporator 12.

[0054] In some embodiments, the second heat exchange element 31 may be a zigzag structure, which abuts against the outer surface of the evaporator 12, thereby increasing the heat exchange time between the water in the second heat exchange element 31 and the evaporator 12 to improve the efficiency of the heat exchange between the second heat exchange element 31 and the evaporator 12.

[0055] It should be noted that the structures of the first heat exchange element 30 and the second heat exchange element 31 may be the same or different.

[0056] In the specific production process, water needs to be heated to 90°C to prepare hot water, and water needs to be cooled to 8°C to prepare cold water. Cold water is needed in the saccharification stage of beer production, and hot water is needed in the packaging stage of beer production. Therefore, the prepared hot water is stored in the first water storage tank 40 during the production process to be used in the packaging stage of beer production; the prepared cold water is stored in the second water storage tank 41 during the production process to be used in the saccharification stage of beer production.

[0057] In the embodiment of the utility model, the cold and hot water cogeneration device includes: a compressor 10, a condenser 11, an evaporator 12 and an expansion valve 13, the inlet of the compressor 10 is connected to the outlet of the evaporator 12, the outlet of the compressor 10 is connected to the inlet of the condenser 11, and the outlet of the condenser 11 is connected to the inlet of the evaporator 12 through the expansion valve 13; a first shell 20 and a first heat exchange element 30, the first shell 20 is provided with a accommodating chamber, the first heat exchange element 30 and the condenser 11 are located in the accommodating chamber of the first shell 20, and the inlet of the first heat exchange element 30 is used for water intake; a first water storage tank 40, the inlet of the first water storage tank 40 is connected to the outlet of the first heat exchange element 30; a second shell 21 and a second heat exchange element 31, the second shell 21 is provided with a accommodating chamber, the second heat exchange element 31 and the evaporator 12 are located in the accommodating chamber of the second shell 21, and the inlet of the second heat exchange element 31 is used for water intake; a second water storage tank 41, the inlet of the second water storage tank 41 is connected to the outlet of the second heat exchange element 31. In this way, hot water is prepared by heat exchange between the first heat exchange element 30 and the condenser 11, and cold water is prepared by heat exchange between the second heat exchange element 31 and the evaporator 12. Heat is transferred between the condenser 11 and the evaporator 12 through the compressor 10 and the expansion valve 13, thereby effectively reducing heat loss and improving energy utilization.

[0058] In one embodiment, the cold and hot water cogeneration device further comprises:

[0059] A third water storage tank 42;

[0060] a first water pump 50, wherein an inlet of the first water pump 50 is connected to an outlet of the third water storage tank 42;

[0061] The first regulating valve 60 has an inlet connected to the outlet of the first water pump 50 , and an outlet of the first regulating valve 60 connected to the inlet of the second heat exchange element 31 .

[0062] It should be noted that the prepared hot water is used in the packaging process, and the hot water can be recycled. The water temperature after the packaging process is 80°C, and the 80°C water is circulated to the first heat exchange element 30 for reheating, thereby realizing the recycling of hot water. The prepared cold water is used in the saccharification process, and the cold water cannot be recycled. In addition, the hardness of cold water is lower than that of hot water, and it needs to be stored separately. Therefore, in the embodiment of the utility model, the third water storage tank 42 is set to store the normal temperature water before the cold water is prepared, so as to realize the co-production of cold and hot water.

[0063] Furthermore, in order to transport the water in the third water storage tank 42 to the second heat exchanger, the present embodiment provides a first water pump 50 and a first regulating valve 60, wherein the first water pump 50 is used to provide transport capacity, and the first regulating valve 60 is used to adjust the flow rate of the transported water.

[0064] In some embodiments, the first water pump 50 can be an independent water pump or a plurality of water pumps arranged in parallel, the inlet of each water pump is connected to the outlet of the third water storage tank 42, and the outlet of each water pump is connected to the second heat exchange element 31 through the first regulating valve 60.

[0065] In some embodiments, the first regulating valve 60 may be an independent regulating valve or a regulating valve group, the regulating valve group includes a manual regulating valve and an automatic regulating valve, the inlet of the manual regulating valve and the inlet of the automatic regulating valve are respectively connected to the first water pump 50, and the outlet of the manual regulating valve and the outlet of the automatic regulating valve are respectively connected to the inlet of the second heat exchange element 31. The manual regulating valve is set by manually adjusting the flow rate, and is usually in a closed state, and is opened when the automatic regulating valve is abnormal; the automatic regulating valve is connected to a programmable logic controller (PLC), and the flow rate is automatically adjusted by the PLC.

[0066] The first regulating valve 60 may be a pneumatic butterfly valve.

[0067] In one embodiment, the cold and hot water cogeneration device further comprises:

[0068] a first temperature sensor 70 , wherein the first temperature sensor 70 is fixed to an outlet of the second heat exchange element 31 ;

[0069] a second regulating valve 61, wherein the inlet of the second regulating valve 61 is connected to the outlet of the second heat exchange element 31, and the outlet of the second regulating valve is connected to the inlet of the first water pump 50;

[0070] The third regulating valve 62 has an inlet connected to the outlet of the second heat exchange element 31 , and an outlet of the third regulating valve 62 connected to the inlet of the second water storage tank 41 .

[0071] The first temperature sensor 70 is used to measure the temperature of the water after passing through the second heat exchange element 31 , and the second regulating valve 61 and the third regulating valve 62 are used for coordinated control to achieve re-refrigeration of the water after passing through the second heat exchange element 31 or to inject it into the second water storage tank 41 for storage.

[0072] Specifically, when the temperature measured by the first temperature sensor 70 is greater than the set temperature threshold, the water after passing through the second heat exchange element 31 has not reached the preset temperature and needs to be refrigerated again. At this time, the second regulating valve 61 is opened and the third regulating valve 62 is closed. At this time, the water after passing through the second heat exchange element 31 enters the first water pump 50 again through the second regulating valve 61, and is refrigerated again by the second heat exchange element 31 after passing through the first water pump 50 and the first regulating valve 60; when the temperature measured by the first temperature sensor 70 is less than or equal to the set temperature threshold, the water after passing through the second heat exchange element 31 reaches the preset temperature and does not need to be refrigerated again. At this time, the second regulating valve 61 is closed and the third regulating valve 62 is opened. At this time, the water after passing through the second heat exchange element 31 enters the second water storage tank 41 through the third regulating valve 62 for storage.

[0073] The first temperature sensor 70 may be a temperature transmitter, which measures the temperature of water after passing through the second heat exchange element 31 .

[0074] In the embodiment of the utility model, the cold and hot water cogeneration device further includes: a first temperature sensor 70, which is fixed to the outlet of the second heat exchange element 31; a second regulating valve 61, whose inlet is connected to the outlet of the second heat exchange element 31, and whose outlet is connected to the inlet of the first water pump 50; and a third regulating valve 62, whose inlet is connected to the outlet of the second heat exchange element 31, and whose outlet is connected to the inlet of the second water storage tank 41. In this way, the water after passing through the second heat exchange element 31 is cooled or stored again by the first temperature sensor 70, the second regulating valve 61 and the third regulating valve 62, so that the prepared cold water meets the temperature requirements.

[0075] In one embodiment, the cold and hot water cogeneration device further comprises:

[0076] a second temperature sensor 71, wherein the second temperature sensor 71 is fixed to the inlet of the second heat exchange element 31;

[0077] A first heat energy meter 80 , wherein a first signal terminal of the first heat energy meter 80 is electrically connected to the first temperature sensor 70 , and a second signal terminal of the first heat energy meter 80 is electrically connected to the second temperature sensor 71 .

[0078] The second temperature sensor 71 is used to measure the temperature of water before passing through the second heat exchange element 31. The first heat energy meter 80 is used to calculate the heat energy absorbed by the cold water according to the temperatures of the first temperature sensor 70 and the second temperature sensor 71, and then calculate the energy utilization rate according to the power consumption.

[0079] The second temperature sensor 71 may be a temperature transmitter, which measures the temperature of the water before passing through the second heat exchange element 31 .

[0080] In the embodiment of the utility model, the cold and hot water cogeneration device further includes: a second temperature sensor 71, the second temperature sensor 71 is fixed to the inlet of the second heat exchange element 31; a first heat energy meter 80, the first signal end of the first heat energy meter 80 is electrically connected to the first temperature sensor 70, and the second signal end of the first heat energy meter 80 is electrically connected to the second temperature sensor 71. In this way, the heat energy absorbed by the cold water is calculated by the temperature of the first heat energy meter 80, the first temperature sensor 70 and the second temperature sensor 71, and then the energy utilization rate is calculated according to the power consumption.

[0081] In one embodiment, a first pressure sensor 90 is disposed at the outlet of the first water pump 50 .

[0082] In the embodiment of the utility model, the first pressure sensor 90 is used to monitor the water pressure at the outlet of the first water pump 50, so that maintenance personnel can determine whether the water pressure entering the second heat exchange element 31 meets the requirements through the water pressure, thereby achieving the stability of preparing cold water.

[0083] In one embodiment, the third water storage tank 42 is provided with a liquid level transmitter 421 .

[0084] In the embodiment of the utility model, the third water storage tank 42 is provided with a liquid level transmitter 421, and the water level in the third water storage tank 42 is monitored by the liquid level transmitter 421, so that maintenance personnel can replenish water in time when the water level is insufficient.

[0085] In one embodiment, the cold and hot water cogeneration device further comprises:

[0086] An oil separator 14 , wherein the inlet of the oil separator 14 is communicated with the outlet of the compressor 10 , the first outlet of the oil separator 14 is communicated with the inlet of the condenser 11 , and the second outlet of the oil separator 14 is communicated with the inlet of the compressor 10 .

[0087] The oil separator 14 is used to separate the lubricating oil in the working medium in the second state discharged from the compressor 10 to ensure the safe and efficient operation of the condenser 11 and the evaporator 12. Specifically, the oil particles in the working medium in the second state can be separated under the action of gravity according to the oil separation principle of reducing the air flow speed and changing the air flow direction.

[0088] In the embodiment of the utility model, the cold and hot water cogeneration device further includes: an oil separator 14, the inlet of the oil separator 14 is communicated with the outlet of the compressor 10, the first outlet of the oil separator 14 is communicated with the inlet of the condenser 11, and the second outlet of the oil separator 14 is communicated with the inlet of the compressor 10. In this way, by providing the oil separator 14, the lubricating oil in the working medium in the second state flows back to the compressor 10 through the second outlet, and the working medium in the second state with the lubricating oil removed enters the condenser 11, so as to realize the safe operation of the condenser 11 and the evaporator 12.

[0089] In one embodiment, the cold and hot water cogeneration device further comprises:

[0090] a second water pump 51, wherein the inlet of the second water pump 51 is used for water intake;

[0091] The fourth regulating valve 63 has an inlet connected to the outlet of the second water pump 51 , and an outlet of the fourth regulating valve 63 connected to the inlet of the first heat exchange element 30 .

[0092] The second water pump 51 is used to provide the transport capacity, and the fourth regulating valve 63 is used to adjust the flow rate of the transported water. In the embodiment of the utility model, the cold and hot water cogeneration device also includes: a second water pump 51, the inlet of the second water pump 51 is used for water intake; a fourth regulating valve 63, the inlet of the fourth regulating valve 63 is connected to the outlet of the second water pump 51, and the outlet of the fourth regulating valve 63 is connected to the inlet of the first heat exchange element 30. In this way, the hot water enters the first heat exchange element 30 for heating through the second water pump 51 and the fourth regulating valve 63.

[0093] In some embodiments, the second water pump 51 can be an independent water pump or a plurality of water pumps arranged in parallel, the inlet of each water pump is used for water intake, and the outlet of each water pump is connected to the first heat exchange element 30 through the fourth regulating valve 63.

[0094] In some embodiments, the fourth regulating valve 63 may be an independent regulating valve or a regulating valve group, the regulating valve group includes a manual regulating valve and an automatic regulating valve, the inlet of the manual regulating valve and the inlet of the automatic regulating valve are respectively connected to the second water pump 51, and the outlet of the manual regulating valve and the outlet of the automatic regulating valve are respectively connected to the inlet of the first heat exchange element 30. The manual regulating valve is set by manually adjusting the flow rate, and is usually in a closed state, and is opened when the automatic regulating valve is abnormal; the automatic regulating valve is connected to the PLC, and the flow rate is automatically adjusted by the PLC.

[0095] In one embodiment, the cold and hot water cogeneration device further comprises:

[0096] a third temperature sensor 72 , the third temperature sensor 72 being fixed to the inlet of the first heat exchange element 30 ;

[0097] a fourth temperature sensor 73, wherein the fourth temperature sensor 73 is fixed to the outlet of the first heat exchange element 30;

[0098] The second heat energy meter 81 , wherein the first signal terminal of the second heat energy meter 81 is electrically connected to the third temperature sensor 72 , and the second signal terminal of the second heat energy meter 81 is electrically connected to the fourth temperature sensor 73 .

[0099] The third temperature sensor 72 is used to measure the water temperature before entering the first heat exchange element 30, the fourth temperature sensor 73 is used to measure the water temperature after entering the first heat exchange element 30, and the second heat energy meter 81 is used to calculate the heat energy released for preparing hot water according to the temperatures of the third temperature sensor 72 and the fourth temperature sensor 73, and then calculate the energy utilization rate according to the electric energy consumption.

[0100] Exemplarily, the cost of converting electricity consumption is 1.12 million yuan / year, the cost of preparing cold water calculated according to the first heat energy meter 80 is 150,000 yuan / year, and the cost of preparing hot water calculated according to the second heat energy meter 81 is 2.46 million yuan / year. That is, the combined production of cold and hot water through this embodiment can generate a benefit of 1.49 million yuan / year, and the annual calorific value that can be saved is 16415 GJ / year, and the annual carbon dioxide emission reduction is 2053t / year, which significantly improves the energy utilization rate and reduces carbon emissions.

[0101] The cost of electricity consumption conversion can be obtained by installing an electric energy meter at the total power supply of the cold and hot water cogeneration device and calculating the total electricity consumption of the cold and hot water cogeneration device.

[0102] In the embodiment of the utility model, the cold and hot water cogeneration device further includes: a third temperature sensor 72, the third temperature sensor 72 is fixed to the inlet of the first heat exchange element 30; a fourth temperature sensor 73, the fourth temperature sensor 73 is fixed to the outlet of the first heat exchange element 30; a second heat energy meter 81, the first signal end of the second heat energy meter 81 is electrically connected to the third temperature sensor 72, and the second signal end of the second heat energy meter 81 is electrically connected to the fourth temperature sensor 73. In this way, the heat energy released by preparing hot water is calculated by the temperature of the second heat energy meter 81, the third temperature sensor 72 and the fourth temperature sensor 73, and then the energy utilization rate is calculated according to the power consumption.

[0103] In one embodiment, a second pressure sensor 91 is disposed at the outlet of the second water pump 51 .

[0104] In the embodiment of the utility model, the second pressure sensor 91 is used to monitor the water pressure at the outlet of the second water pump 51, so that maintenance personnel can determine whether the water pressure entering the first heat exchange element 30 meets the requirements through the water pressure, thereby achieving stability in preparing hot water.

[0105] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0106] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A cold and hot water cogeneration device, characterized in that: include: A compressor, a condenser, an evaporator and an expansion valve, wherein the inlet of the compressor is communicated with the outlet of the evaporator, the outlet of the compressor is communicated with the inlet of the condenser, and the outlet of the condenser is communicated with the inlet of the evaporator through the expansion valve; A first shell and a first heat exchange element, wherein a receiving cavity is provided in the first shell, the first heat exchange element and the condenser are located in the receiving cavity of the first shell, and an inlet of the first heat exchange element is used for water inlet; a first water storage tank, wherein an inlet of the first water storage tank is in communication with an outlet of the first heat exchange element; A second shell and a second heat exchange element, wherein a receiving chamber is provided in the second shell, the second heat exchange element and the evaporator are located in the receiving chamber of the second shell, and an inlet of the second heat exchange element is used for water inlet; A second water storage tank, wherein the inlet of the second water storage tank is communicated with the outlet of the second heat exchange element.

2. The cold and hot water cogeneration device according to claim 1, characterized in that: Also includes: The third water storage tank; a first water pump, wherein an inlet of the first water pump is connected to an outlet of the third water storage tank; A first regulating valve, wherein an inlet of the first regulating valve is communicated with an outlet of the first water pump, and an outlet of the first regulating valve is communicated with an inlet of the second heat exchange element.

3. The cold and hot water cogeneration device according to claim 2, characterized in that: Also includes: a first temperature sensor, wherein the first temperature sensor is fixed to an outlet of the second heat exchange element; a second regulating valve, wherein the inlet of the second regulating valve is communicated with the outlet of the second heat exchange element, and the outlet of the second regulating valve is communicated with the inlet of the first water pump; A third regulating valve, wherein the inlet of the third regulating valve is communicated with the outlet of the second heat exchange element, and the outlet of the third regulating valve is communicated with the inlet of the second water storage tank.

4. The cold and hot water cogeneration device according to claim 3, characterized in that: Also includes: a second temperature sensor, the second temperature sensor being fixed to an inlet of the second heat exchange element; A first heat energy meter, wherein a first signal end of the first heat energy meter is electrically connected to the first temperature sensor, and a second signal end of the first heat energy meter is electrically connected to the second temperature sensor.

5. The cold and hot water cogeneration device according to claim 2, characterized in that: A first pressure sensor is provided at the outlet of the first water pump.

6. The cold and hot water cogeneration device according to claim 2, characterized in that: The third water storage tank is provided with a liquid level transmitter.

7. The cold and hot water cogeneration device according to any one of claims 1 to 6, characterized in that: Also includes: An oil separator, wherein the inlet of the oil separator is communicated with the outlet of the compressor, the first outlet of the oil separator is communicated with the inlet of the condenser, and the second outlet of the oil separator is communicated with the inlet of the compressor.

8. The cold and hot water cogeneration device according to any one of claims 1 to 6, characterized in that: Also includes: a second water pump, wherein the inlet of the second water pump is used for water intake; A fourth regulating valve, wherein the inlet of the fourth regulating valve is communicated with the outlet of the second water pump, and the outlet of the fourth regulating valve is communicated with the inlet of the first heat exchange element.

9. The cold and hot water cogeneration device according to claim 8, characterized in that: Also includes: a third temperature sensor, the third temperature sensor being fixed to an inlet of the first heat exchange element; a fourth temperature sensor, the fourth temperature sensor being fixed to the outlet of the first heat exchange element; A second heat energy meter, wherein a first signal terminal of the second heat energy meter is electrically connected to the third temperature sensor, and a second signal terminal of the second heat energy meter is electrically connected to the fourth temperature sensor.

10. The cold and hot water cogeneration device according to claim 8, characterized in that: A second pressure sensor is provided at the outlet of the second water pump.

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