Heat pump, fruit can production water supply system and production process

Abstract

The application provides a heat pump and a fruit canning waste heat recovery system, and the heat pump comprises a base, a heating assembly arranged on the base and used for heating water, and a heat recovery assembly arranged on the base and used for recovering heat in the water, characterized in that the heating assembly comprises a compressor arranged on the base and provided with a first refrigerant inlet and a first refrigerant outlet; a condenser provided with a first water inlet pipe and a first water outlet pipe, water needing to be heated enters the first water inlet pipe, and heated water flows out of the first water outlet pipe; the condenser is further provided with a second refrigerant inlet and a second refrigerant outlet; the second refrigerant inlet is communicated with the first refrigerant outlet through a first copper pipe; and the refrigerant in the condenser is discharged from the second refrigerant outlet. The heat pump and the recovery system can recover heat in the water, and the energy utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery technology, and more specifically, to a heat pump, a water supply system for fruit canning production, and a production process. Background Technology

[0002] Canned fruit is named according to the different ingredients used. Generally, the raw materials for canned fruit are fruits, including yellow peaches, apples, lychees, strawberries, hawthorns, etc. The main products include canned yellow peaches, canned strawberries, canned jackfruit, and canned oranges. In the production process of canned fruit, the ingredients need to be heated and boiled first, then sealed and subjected to high-temperature sterilization and cooling. Therefore, a water source heat pump is required to generate hot and cold water for the fruit canning process.

[0003] Chinese patent application CN213639493U discloses a continuous sterilization machine for canned fruit. This machine uses high-temperature steam to sterilize the canned goods and then uses a water spraying mechanism to cool them down after sterilization. However, the high-temperature steam is directly discharged after use, and the wastewater generated during cooling is also directly discharged, resulting in energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide a heat pump, a water supply system for fruit canning production, and a production process that can recover a portion of the heat after sterilization and cooling, thereby reducing energy waste.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A heat pump, comprising:

[0007] Base;

[0008] A heating element, mounted on the base, is used to heat the water;

[0009] A heat recovery assembly, mounted on a base, is used to recover heat from water; characterized in that the heating assembly comprises:

[0010] The compressor is mounted on a base, on which a first refrigerant inlet and a first refrigerant outlet are provided;

[0011] The condenser is equipped with a first inlet pipe and a first outlet pipe. Water that needs to be heated enters through the first inlet pipe, and heated water flows out through the first outlet pipe. The condenser is also equipped with a second refrigerant inlet and a second refrigerant outlet. The second refrigerant inlet is connected to the first refrigerant outlet through a first copper pipe, and the refrigerant in the condenser is discharged from the second refrigerant outlet.

[0012] Preferably, the first water inlet pipe is located near the bottom of the condenser, the first water outlet pipe is located near the top of the condenser, the second refrigerant inlet is located near the top of the condenser, and the second refrigerant outlet is located near the bottom of the condenser.

[0013] Furthermore, a water flow regulating valve for detecting water flow is installed in the first water inlet pipe, and a high-pressure pressure sensor for detecting refrigerant pressure is installed on the first copper pipe.

[0014] The heat recovery assembly includes:

[0015] An evaporator is provided with a second water inlet pipe, a second water outlet pipe, a second refrigerant inlet, and a second refrigerant outlet. The second refrigerant inlet is connected to the first refrigerant outlet through a second copper pipe.

[0016] The gas-liquid separator is used to separate the liquid from the refrigerant. It is provided with an inlet and an outlet. The second refrigerant outlet is connected to the inlet through a third copper pipe, and the outlet is connected to the first refrigerant inlet through a fourth copper pipe.

[0017] Preferably, the second water inlet pipe is located near the top of the evaporator, the second water outlet pipe is located near the bottom of the evaporator, the third refrigerant inlet is located near the bottom of the evaporator, and the third refrigerant outlet is located near the top of the evaporator.

[0018] This invention also proposes a water supply system for fruit canning production. In fruit canning production, sterilization equipment is needed to sterilize the canned fruit after filling, and cooling equipment is needed to cool the sterilized canned fruit. The system is characterized by comprising:

[0019] Pure water equipment is used to store the water needed for production.

[0020] A water source direct heating high-temperature heat pump is used to receive water from a pure water equipment and heat it to a predetermined temperature. The water source direct heating high-temperature heat pump adopts the above-mentioned heat pump.

[0021] The hot water tank is used to store water heated by a direct-heating high-temperature heat pump. Part of the water in the hot water tank is sent to the sterilization equipment to sterilize the canned goods after they have been filled.

[0022] The medium-temperature water tank is connected to the cooling equipment and can circulate water in the cooling equipment to introduce higher-temperature water from the cooling equipment into the medium-temperature water tank and lower-temperature water from the medium-temperature water tank into the cooling equipment. The medium-temperature water tank is also connected to the first inlet pipe and the first outlet pipe. Higher-temperature water enters the water source direct heating high-temperature heat pump from the medium-temperature water tank and undergoes heat exchange in the water source direct heating high-temperature heat pump, converting it into lower-temperature water. The lower-temperature water flows into the medium-temperature water tank from the first outlet pipe.

[0023] Preferably, it also includes a water source high-temperature heat pump, which is equipped with a third inlet pipe, a third outlet pipe, a fourth inlet pipe, and a fourth outlet pipe. The third inlet pipe and the third outlet pipe are connected to the sterilization equipment. A water pump is installed on the third inlet pipe. Water from the sterilization equipment enters the water source high-temperature heat pump through the third inlet pipe, is heated, and then flows back to the sterilization equipment through the third outlet pipe. The fourth inlet pipe and the fourth outlet pipe are connected to a cooling equipment. A water pump is installed on the fourth inlet pipe. Water from the cooling equipment enters the water source high-temperature heat pump through the fourth inlet pipe, is cooled by heat exchange, and then flows back to the cooling equipment.

[0024] This invention also provides a fruit canning process, which uses the above-mentioned water supply system and specifically includes the following steps:

[0025] Step 1: Add hot water from the hot water tank to the pot to boil the sugar water;

[0026] Step 2: Can the cooked sugar water and chopped fruit;

[0027] Step 3: Place the canned goods into the sterilization equipment for sterilization. The hot water required for the sterilization equipment comes from the hot water tank.

[0028] Step 4: Place the sterilized canned goods into a cooling device for cooling. The water required for the cooling device comes from a medium-temperature water tank.

[0029] Step 5: Obtain the finished product;

[0030] During step three, when the temperature of the hot water in the sterilization equipment drops to the predetermined temperature, the water source high-temperature heat pump starts to work. The water in the sterilization equipment and the water in the cooling equipment enter the water source high-temperature heat pump respectively. The water source high-temperature heat pump heats the water flowing into the sterilization equipment and then flows back to the sterilization equipment, and cools the water in the cooling equipment and then flows back to the cooling equipment.

[0031] Preferably, during step four, a portion of the water in the cooling equipment can flow back into the medium-temperature water tank, and the water in the medium-temperature water tank flows into the cooling equipment as needed. When the water in the medium-temperature water tank rises to a predetermined temperature, the water source direct-heating high-temperature heat pump starts, and the water in the medium-temperature water tank enters the water source direct-heating high-temperature heat pump to cool down and then flows back into the medium-temperature water tank. At the same time, the water source direct-heating high-temperature heat pump heats the water in the pure water equipment, and the heated water enters the hot water tank for later use.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1) The heat pump of the present invention can heat the production water, and part of the heat is obtained from the recovery of heat from other water, thereby saving energy;

[0034] 2) The water supply system of the present invention can recover a portion of the heat absorbed by the water in the cooling equipment and use the recovered heat to heat the pure water and the water in the sterilization equipment, thereby reducing the waste of heat. Attached Figure Description

[0035] Figure 1 This is one of the heat pump structure diagrams provided by the present invention;

[0036] Figure 2 This is the second heat pump structure diagram provided by the present invention;

[0037] Figure 3 The third heat pump structure diagram provided by this invention;

[0038] Figure 4 This is a structural diagram of the waste heat recovery system for canned fruit provided by the present invention.

[0039] The image shows:

[0040] 1. Base; 2. Condenser; 201. First water outlet pipe; 202. First water inlet pipe; 3. Water flow regulating valve; 4. Evaporator; 401. Second water inlet pipe; 402. Second water outlet pipe; 5. Second copper pipe; 6. Expander; 7. Third copper pipe; 8. Gas-liquid separator; 801. Fourth copper pipe; 9. Compressor; 901. First copper pipe; 10. Dryer filter; 11. High pressure sensor; 12. Low pressure sensor. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Example 1:

[0043] like Figures 1 to 3 As shown, a heat pump includes a base 1 and a heating component and a heat recovery component disposed on the base 1. The heating component is used to heat cold water, which is generally clean water input during the production process. The heat recovery component is used to recover heat from the water.

[0044] The heating assembly includes a compressor 9 and a condenser 2. The compressor 9 uses existing technology and has a first refrigerant inlet and a first refrigerant outlet. The condenser 2 is actually a heat exchanger, and its principle is also existing technology. It has a first water inlet pipe 202 and a first water outlet pipe 201. Cold water to be heated enters through the first water inlet pipe, and heated water flows out through the first water outlet pipe. The condenser 2 also has a second refrigerant inlet and a second refrigerant outlet. The second refrigerant inlet and the first refrigerant outlet are connected by a first copper pipe 901. The refrigerant is heated to a predetermined temperature by the compressor 9 and flows out from the first refrigerant outlet. It then enters the condenser 2 through the first copper pipe 901 to exchange heat with the water in the condenser 2, and finally flows out from the second refrigerant outlet.

[0045] In the condenser 2, the first water inlet pipe 202 is located near the bottom, the first water outlet pipe 201 is located near the top of the condenser 2, the second refrigerant inlet is located near the top of the condenser 2, and the second refrigerant outlet is located near the bottom of the condenser 2. This allows the heat in the refrigerant to be transferred to the water as much as possible.

[0046] Furthermore, a water flow regulating valve 3 for detecting water flow is provided in the first water inlet pipe 202, and a high pressure sensor 11 for detecting refrigerant pressure is provided on the first copper pipe 901. By controlling the water flow and refrigerant pressure, the temperature of the water flowing out of the first water outlet pipe 201 can be maintained at a constant value as much as possible.

[0047] The heat recovery assembly includes an evaporator 4 and a gas-liquid separator 8. The evaporator 4 is a heat exchanger in the prior art, equipped with a second outlet pipe 402, a second inlet pipe 401, a third refrigerant inlet, and a third refrigerant outlet. The third refrigerant inlet is connected to the second refrigerant outlet via a second copper pipe 5. The refrigerant from the condenser 2 enters the evaporator 4. The gas-liquid separator 8 is used to separate the liquid from the refrigerant. It is equipped with an inlet and an outlet. The third refrigerant outlet is connected to the inlet via a third copper pipe 7, and the outlet is connected to the first refrigerant inlet via a fourth copper pipe 801. The wastewater entering from the second inlet pipe 401 has a high temperature. The refrigerant exchanges heat with the wastewater in the evaporator 4, and the temperature of the refrigerant exiting the evaporator 4 increases, thus recovering some of the heat from the wastewater. The refrigerant exiting the evaporator 4 enters the gas-liquid separator 8. After gas-liquid separation, the refrigerant returns to the compressor 9.

[0048] The second water inlet pipe 401 is located near the top of the evaporator 4, the second water outlet pipe 402 is located near the bottom of the evaporator 4, the third refrigerant inlet is located near the bottom of the evaporator, and the third refrigerant outlet is located near the top of the evaporator, so as to exchange the temperature of the water entering the evaporator 4 from the second water inlet pipe 401 into the refrigerant as much as possible.

[0049] An expander 6 is installed on the second copper tube 5, and a dryer filter 10 is installed on the second copper tube 5 between the expander 6 and the condenser 2. A low-pressure sensor 12 is installed on the third copper tube 7.

[0050] Example 2:

[0051] like Figure 4 As shown, this embodiment is a water supply system for fruit canning production. The production of fruit canning mainly includes processes such as boiling in syrup, canning, sterilization, and cooling; the equipment for these processes all utilizes existing technology.

[0052] The water supply system includes a pure water device, a water source direct heating high-temperature heat pump, a hot water tank, a water source high-temperature heat pump, a medium-temperature water tank, and an air source heat pump. The water source heating high-temperature heat pump adopts the heat pump of Embodiment 1, and the water source high-temperature heat pump and the air source heat pump adopt existing technologies.

[0053] The outlet of the pure water equipment is connected to the first inlet pipe of the direct-heating high-temperature heat pump, and the first outlet pipe of the direct-heating high-temperature heat pump is connected to the inlet of the hot water tank. The hot water in the tank is at approximately 99°C. Part of the water in the tank is used to prepare the juice (sugar syrup) for canning, and part is fed into the sterilization equipment for high-temperature sterilization of the filled canned goods. A water pump is installed on the first inlet pipe.

[0054] The water in the intermediate-temperature water tank is used to cool the sterilized canned goods. The intermediate-temperature water tank is connected to the cooling equipment performing the cooling process, allowing water from both the intermediate-temperature water tank and the cooling equipment to flow into each other, ensuring that the water in the cooling equipment and the water in the intermediate-temperature water tank are as close to the same temperature as possible. Simultaneously, the intermediate-temperature water tank is also connected to a second inlet pipe and a second outlet pipe. Water from the intermediate-temperature water tank enters the water source direct-heating high-temperature heat pump through the second inlet pipe. After heat exchange, the water temperature decreases, and the cooled water flows back to the intermediate-temperature water tank through the second outlet pipe, thus recovering some of the heat from the water in the cooling equipment.

[0055] The water source high-temperature heat pump is equipped with a third inlet pipe, a third outlet pipe, a fourth inlet pipe, and a fourth outlet pipe. The third inlet pipe and the third outlet pipe are connected to the sterilization equipment. A water pump is installed on the third inlet pipe. Water from the sterilization equipment enters the water source high-temperature heat pump through the third inlet pipe, is heated, and then flows back to the sterilization equipment through the third outlet pipe. The fourth inlet pipe and the fourth outlet pipe are connected to a cooling device. A water pump is installed on the fourth inlet pipe. Water from the cooling device enters the water source high-temperature heat pump through the fourth inlet pipe, is cooled by heat exchange, and then flows back to the cooling device. Therefore, the water source high-temperature heat pump can recover a portion of the heat from the cooling water and use it to heat the water in the sterilization equipment, achieving partial heat recovery and saving energy.

[0056] The air heat source pump is equipped with a fourth water inlet pipe, a fourth water outlet pipe, an air inlet, and an air outlet. The fourth water inlet pipe and the fourth water outlet pipe are respectively connected to a medium-temperature water tank. Water in the medium-temperature water tank enters the air heat source pump through the fourth water inlet pipe, and after heat exchange and heating, it flows back to the medium-temperature water tank through the fourth water outlet pipe. Air enters through the air inlet of the air heat source pump and runs out through the air outlet. The air exchanges heat and cools down in the air heat source pump. The air outlet is connected to the production workshop, which can realize the ventilation and cooling of the air in the production workshop.

[0057] Example 3

[0058] This embodiment describes a fruit canning process that uses the water supply system of Embodiment Two, and specifically includes the following steps:

[0059] Step 1: Add hot water from the hot water tank to the pot to boil the sugar water;

[0060] Step 2: Can the cooked sugar water and chopped fruit;

[0061] Step 3: Place the canned goods into the sterilization equipment for sterilization;

[0062] Step 4: Place the sterilized canned goods into a cooling device for cooling;

[0063] Step 5: Obtain the finished product.

[0064] The hot water required for sterilization in step three comes from the hot water tank, and the water required for cooling in step four comes from the medium-temperature water tank. When the temperature of the hot water in the sterilization equipment drops to the predetermined temperature, the water source high-temperature heat pump starts to work. The water in the sterilization equipment and the water in the cooling equipment enter the water source high-temperature heat pump respectively. The water source high-temperature heat pump heats the water flowing into the sterilization equipment and then flows it back to the sterilization equipment, and cools the water in the cooling equipment and then flows it back to the cooling equipment.

[0065] During step four, some water in the cooling equipment flows back to the medium-temperature water tank. Water in the medium-temperature water tank can flow into the cooling equipment as needed. When the water in the medium-temperature water tank reaches the predetermined temperature, the water-source direct-heating high-temperature heat pump starts. The water in the medium-temperature water tank enters the water-source direct-heating high-temperature heat pump for cooling and then flows back to the medium-temperature water tank. Simultaneously, the water-source direct-heating high-temperature heat pump heats the water in the pure water equipment, and the heated water enters the hot water tank for later use. The air-source heat pump can start simultaneously with the water-source direct-heating high-temperature heat pump, or it can be started independently to cool the water in the medium-temperature water tank.

[0066] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A fruit canning production process, comprising a fruit canning production water supply system, wherein the fruit canning production water supply system includes: Pure water equipment is used to store the water needed for production. A direct-heating high-temperature heat pump is used to receive water from a pure water system and heat it to a predetermined temperature. The hot water tank is used to store water heated by a direct-heating high-temperature heat pump. Part of the water in the hot water tank is sent to the sterilization equipment to sterilize the canned goods after they have been filled. The medium-temperature water tank is connected to the cooling equipment and can circulate water in the cooling equipment to introduce higher-temperature water from the cooling equipment into the medium-temperature water tank and lower-temperature water from the medium-temperature water tank into the cooling equipment. A water source high-temperature heat pump is provided, which has a third inlet pipe, a third outlet pipe, a fourth inlet pipe, and a fourth outlet pipe. The third inlet pipe and the third outlet pipe are connected to the sterilization equipment. A water pump is installed on the third inlet pipe. Water from the sterilization equipment enters the water source high-temperature heat pump through the third inlet pipe, is heated, and then flows back to the sterilization equipment through the third outlet pipe. The fourth inlet pipe and the fourth outlet pipe are connected to a cooling equipment. A water pump is installed on the fourth inlet pipe. Water from the cooling equipment enters the water source high-temperature heat pump through the fourth inlet pipe, is cooled by heat exchange, and then flows back to the cooling equipment. The water source direct heating high-temperature heat pump includes: Base; A heating element, mounted on the base, is used to heat the water; A heat recovery component, mounted on the base, is used to recover heat from the water; The heating component includes: The compressor is mounted on a base, on which a first refrigerant inlet and a first refrigerant outlet are provided; The condenser is mounted on the base and has a first inlet pipe and a first outlet pipe. Water that needs to be heated enters through the first inlet pipe and heated water flows out through the first outlet pipe. The condenser also has a second refrigerant inlet and a second refrigerant outlet. The second refrigerant inlet is connected to the first refrigerant outlet through a first copper pipe, and the refrigerant in the condenser is discharged from the second refrigerant outlet. The medium-temperature water tank is also connected to the first inlet pipe and the first outlet pipe. Higher-temperature water enters the water source direct-heating high-temperature heat pump from the medium-temperature water tank and undergoes heat exchange in the water source direct-heating high-temperature heat pump, converting it into lower-temperature water. The lower-temperature water flows into the medium-temperature water tank from the first outlet pipe. Its features are, The fruit canning process includes the following steps: Step 1: Add hot water from the hot water tank to the pot to boil the sugar water; Step 2: Can the cooked sugar water and chopped fruit; Step 3: Place the canned goods into the sterilization equipment for sterilization. The hot water required by the sterilization equipment comes from the hot water tank. When the temperature of the hot water in the sterilization equipment drops to the predetermined temperature, the water source high-temperature heat pump starts to work. The water in the sterilization equipment and the water in the cooling equipment enter the water source high-temperature heat pump respectively. The water source high-temperature heat pump heats the water flowing into the sterilization equipment and then flows back to the sterilization equipment. It also cools the water in the cooling equipment and then flows back to the cooling equipment. Step 4: Place the sterilized canned goods into the cooling equipment for cooling. The water required by the cooling equipment comes from the medium-temperature water tank. Some of the water in the cooling equipment can flow back into the medium-temperature water tank. The water in the medium-temperature water tank flows into the cooling equipment as needed. When the water in the medium-temperature water tank rises to the predetermined temperature, the water source direct heating high-temperature heat pump starts. The water in the medium-temperature water tank enters the water source direct heating high-temperature heat pump for cooling and then flows back into the medium-temperature water tank. At the same time, the water source direct heating high-temperature heat pump heats the water in the pure water equipment. The heated water enters the hot water tank for later use. Step 5: Obtain the finished product.

2. The fruit canning process according to claim 1, characterized in that, The first water inlet pipe is located near the bottom of the condenser, the first water outlet pipe is located near the top of the condenser, the second refrigerant inlet is located near the top of the condenser, and the second refrigerant outlet is located near the bottom of the condenser.

3. The fruit canning process according to claim 1, characterized in that, A water flow regulating valve for detecting water flow is installed in the first water inlet pipe, and a high-pressure pressure sensor for detecting refrigerant pressure is installed on the first copper pipe.

4. The fruit canning process according to claim 1, characterized in that, The heat recovery assembly includes: The evaporator is equipped with a second water inlet pipe, a second water outlet pipe, a third refrigerant inlet, and a third refrigerant outlet. The third refrigerant inlet is connected to the first refrigerant outlet through a second copper pipe. A gas-liquid separator is used to separate liquid from refrigerant. It is equipped with an inlet and an outlet. The third refrigerant outlet is connected to the inlet through a third copper pipe, and the outlet is connected to the first refrigerant inlet through a fourth copper pipe.

5. The fruit canning process according to claim 4, characterized in that, The second water inlet pipe is located near the top of the evaporator, the second water outlet pipe is located near the bottom of the evaporator, the third refrigerant inlet is located near the bottom of the evaporator, and the third refrigerant outlet is located near the top of the evaporator.

6. The fruit canning process according to claim 1, characterized in that, It also includes an air heat source pump, which is equipped with a fourth water inlet pipe, a fourth water outlet pipe, an air inlet, and an air outlet. The fourth water inlet pipe and the fourth water outlet pipe are respectively connected to a medium-temperature water tank. Water in the medium-temperature water tank enters the air heat source pump through the fourth water inlet pipe, and after heat exchange and heating, it flows back to the medium-temperature water tank through the fourth water outlet pipe. Air enters from the air inlet of the air heat source pump and runs out from the air outlet. The air exchanges heat and cools down in the air heat source pump. The air outlet is connected to the canning production workshop.

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