CN104197449A - Heat pump system for kitchen of restaurant and control method for heat pump system - Google Patents
Heat pump system for kitchen of restaurant and control method for heat pump system Download PDFInfo
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- CN104197449A CN104197449A CN201410478599.XA CN201410478599A CN104197449A CN 104197449 A CN104197449 A CN 104197449A CN 201410478599 A CN201410478599 A CN 201410478599A CN 104197449 A CN104197449 A CN 104197449A
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- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The invention provides a heat pump system for a kitchen of a restaurant and a control method for the heat pump system, and relates to a heating and cooling combination system, in particular to a heat pump integrated system which is suitable for supplying hot water for the kitchen of the restaurant and performing cooling, dehumidification and cold storage preservation. The heat pump system comprises a heat pump main engine, a hot water storage tank, an air treatment tank and a variable cold storage cold air channel, wherein the heat pump main engine comprises a multi-mode refrigerant circulation loop switching mechanism; the heat pump system is controlled by a first four-way valve, a second four-way valve, a first electromagnetic valve and a second electromagnetic valve; hot water is generated in an instant constant-temperature heating mode and a heat storage water tank heat insulation storage mode; the hot water is generated and stored at any time in a cold storage refrigerating process and a cooling and dehumidifying process; enough hot water supplying is guaranteed; the problem that the requirement on hot water and the requirement on refrigerating and cooling are out-of-step is solved; refrigerating and dehumidifying are performed by large-temperature-difference refrigeration and indoor return air recycling; air conditioning, hot water supplying and cold storage and cold blasting on food in the kitchen are realized integrally; and the components of the heat pump system can run independently and can also support each other, so that the comprehensive running efficiency of the system is high.
Description
Technical field
The present invention relates to the association system of a kind of heating and refrigeration, relate in particular to a kind of heat pump composite system that is applicable to hot water supply, cool-down dehumidification and the cold storing and fresh-keeping in kitchen behind restaurant.
Background technology
Kitchen, is the place of culinary art cuisines, is a pith of high-quality amenities of life.The catering trade is also growing up with speed faster in China, and whether restaurant's food is healthy, good to eat is the basic of restaurant's existence.Temperature raises gradually, and each bacterioid in kitchen more easily grows under the environment of high temperature, high humidity, and they can be hidden in the slight part that each we are difficult for discovering, the health that endangers us.Cook plays vital effect here.Yet, the environment in kitchen, restaurant is to perplex them always, outside in kitchen, greasy dirt weighs, also has severe temperature, exactly like food steamer, the people of culinary art drips with sweat, kitchen oil stain is large, temperature is high, high humidity, clean difficult, contain the killer that multiple harmful substances has become kitchen, the health of the people in kitchen is difficult to be guaranteed.Because kitchen oil stain is large, cause air-conditioning to be difficult to cleaning, discounting in service life; In addition, kitchen space is little, and installing an air-conditioner can be to the pressure of space increase originally, and common air-conditioning is difficult to put at kitchen space.On the other hand, dish is washed in kitchen, the chopsticks of washing the dishes all need with a large amount of hot water, but restaurant often can not provide in a large number.Chinese invention patent application " a kind of heat pump device of kitchen " (application for a patent for invention numbers 201110171145.4, publication number CN102287916A) a kind of heat pump device of kitchen is disclosed, it comprises compressor, outdoor heat exchanger, throttle part, indoor heat exchanger and with the supporting fan system of indoor heat exchanger, compressor is connected with outdoor heat exchanger with indoor heat exchanger respectively, indoor heat exchanger is connected with outdoor heat exchanger by throttle part, form refrigerating circuit, this device also comprises water circulating pump and attemperater, described water circulating pump is connected with attemperater with outdoor heat exchanger, form and manufacture hot-water return, described attemperater is provided with water inlet pipe and outlet pipe.This heat pump device of kitchen utilizes the air-conditioning heat that outdoor heat exchanger is discharged when refrigeration to carry out water heating.The prior art scheme adopts shell and tube exchanger by circulating-heating mode hot water preparing, and when attemperater water temperature has reached after the temperature that hot water preparing needs, the heat producing in shell and tube exchanger can not shift in time, and unit is normal refrigerating operaton just; Otherwise, if water temperature is too low, can not meet the requirement of hot-water supply, need to utilize electrical heating to improve water temperature, refrigeration and water heating become implacable contradiction, and this not only makes cost of investment improve, and energy-saving effect also decreases.
Chinese invention patent application " air conditioner used in kitchen " (application for a patent for invention numbers 201210274448.3, publication number CN102777978A) a kind of air conditioner used in kitchen is disclosed, comprise indoor set and off-premises station, described indoor set comprises air outlet, blower fan and indoor heat exchanger, described off-premises station comprises outdoor heat exchanger, compressor, expansion valve, air inlet and air outlet, and described outdoor heat exchanger is communicated with indoor heat exchanger, compressor, expansion valve; Described air inlet is communicated with air outlet through outdoor heat exchanger; Described air conditioner used in kitchen also comprises that one is located on indoor set and the fresh wind port being communicated with fresh air outside, and described fresh wind port is communicated with distinguished and admirable through hole, blower fan, the air outlet of indoor heat exchanger successively.
But the process of refrigerastion of above-mentioned prior art scheme is all to lower the temperature to entering the outdoor new wind in air channel by indoor heat exchanger, and does not process return air in kitchen.When freezing summer, outdoor temperature can reach 40 degree left and right, and when the evaporimeter of outdoor hot blast process indoor heat exchanger freezes, the temperature of delivering to indoor wind is still very high, is difficult to the refrigeration that reaches desirable; In addition, above-mentioned prior art scheme is not to indoor wind circularly cooling, and the air that indoor temperature is lower is constantly replaced by new wind, not only cannot realize the object to the indoor lasting cooling in kitchen, has also caused the increase of cooling load and the waste of the energy.
On the other hand, along with growth in the living standard, it is more and more important that the fresh and safety of food seems, the cold storing and fresh-keeping of restaurant's food materials is especially related to each guest's personal health problem.Antistaling storing is the activity that suppresses microorganism and enzyme, a kind of mode that extends fruit and vegetable storage cycle.Fresh-keeping storage can reduce the incidence of pathogen and the rotting rate of fruit, can also slow down the respiratory metabolism process of fruit, vegetables, rice etc., thereby reach, stops decaying of food, extends storage time.Take traditional staple food of rice as example, gentle putting the long period as usual, its nutritive loss is just comparatively serious, particularly at southern plum rain season, the most easily causes going mouldy of rice, greatly reduces the nutritional labeling of rice, has caused the serious waste of grain simultaneously.Large packed cereal (rice and flour), edible oil, tealeaves, and the hair dish of the whole basket of FCL and fruit etc., be difficult to cold storing and fresh-keeping in the less various conventional refrigerators of interlayer volume, along with the raising that each link food freshness is required, behind restaurant, the demand of kitchen to the rear kitchen refrigerator of the undressed food materials of can receiving volume large, the whole basket of FCL, also becomes more and more urgent.
Summary of the invention
The object of the invention is to provide a kind of for kitchen heat pump behind the restaurant of kitchen, restaurant hot water preparing and cool-down dehumidification, by instant heating type heat pump hot water machine and indoor return air heat recovery are organically integrated together with large temperature-difference refrigerating technology, solution kitchen heat comprehensive reutilization, rear kitchen operating environment cool-down dehumidification, the cleaning without interruption technical problem of hot water and rear kitchen food refrigerating.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kitchen heat pump behind restaurant, comprises heat pump main frame, and heat storage water tank and control device, is characterized in that:
Behind described restaurant, kitchen heat pump also comprises air-treatment case, and described air-treatment case is comprised of the new wind mixing section, air heat-exchange section and the air supply section that are communicated with successively; The indoor return air entrance of new wind mixing section is provided with greasy dirt filter rinsed, and the outdoor new wind entrance of new wind mixing section is provided with new air-valve; Air heat-exchange section is provided with water coil heat exchanger and the second finned heat exchanger; Air supply section is communicated to the indoor supply air duct in kitchen by pressure fan;
Described heat pump main frame comprises compressor, instant heat exchanger, and the first finned heat exchanger, the first expansion valve, the second expansion valve, liquid reservoir and filter, and for switching the Multi-mode refrigeration agent closed circuit switching mechanism of unit operational mode;
Described Multi-mode refrigeration agent closed circuit switching mechanism comprises the first cross valve, the second cross valve, the first magnetic valve and the second magnetic valve; The D mouth of the first cross valve is connected to the exhaust outlet of compressor, and the E mouth of the first cross valve is connected to the D mouth of the second cross valve; The S mouth of the first cross valve and the S mouth of the second cross valve are parallel-connected to the air entry of compressor; The C mouth of the first cross valve is connected to the coolant channel A mouth of instant heat exchanger, and the C mouth of the second cross valve is connected to the coolant channel A mouth of the second finned heat exchanger, and the E mouth of the second cross valve is connected to the coolant channel A mouth of the first finned heat exchanger; The coolant channel B mouth of the first finned heat exchanger, the second finned heat exchanger and instant heat exchanger, is connected to reservoir by the first to the 3rd check valve respectively, then by filter, is connected to the entrance of the first magnetic valve and the second magnetic valve; The outlet of the first magnetic valve is connected to the coolant channel B mouth of the second finned heat exchanger successively by the 4th check valve and the first expansion valve; The outlet of the second magnetic valve is connected to the coolant channel B mouth of the first finned heat exchanger successively by the 5th check valve and the second expansion valve;
Running water inlet pipeline is connected to the water inlet of water coil heat exchanger by entering water electromagnetic valve, the delivery port of water coil heat exchanger is connected to the water inlet of instant heat exchanger by constant-temperature water valve, the hot water outlet of instant heat exchanger is connected to the hot water inlet on heat storage water tank top, forms Instant heating type hot water heat exchanging pipe;
Control device, by described Multi-mode refrigeration agent closed circuit switching mechanism, changes the circulating path of cold-producing medium, and behind control restaurant, kitchen heat pump is according to default operational mode operation.
A kind of preferred technical scheme of kitchen heat pump behind restaurant of the present invention, is characterized in that described operational mode at least comprises that pattern 1 is to one of pattern 4, wherein:
Pattern 1 is water heating-refrigeration mode, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve is opened, the second closed electromagnetic valve; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; Pressure fan is opened, and carries out air circulation flow process;
The refrigerant circulation flow process of pattern 1: the air entry of E-S mouth-> compressor of C-D mouth-> first cross valve of coolant channel-> three check valve-> liquid reservoir-> filter-> the first magnetic valve-> four check valve-> the first expansion valve-> the second finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;
Pattern 2 is single water heating pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve is opened; Heat exchanger fan starting; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;
The refrigerant circulation flow process of pattern 2: E-S mouth-> compressor air suction mouth of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;
Mode 3 is single refrigeration mode, and its state of a control is: the first cross valve and the second cross valve are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve is opened, the second closed electromagnetic valve; Heat exchanger fan starting; Entering water electromagnetic valve is closed, and stops hot water preparing; Pressure fan is opened, and carries out air circulation flow process;
The refrigerant circulation flow process of mode 3: the air entry of C-S mouth-> compressor of D-E mouth-> the first finned heat exchanger-> the first check valve-> liquid reservoir-> filter-> the first magnetic valve-> four check valve-> the first expansion valve-> the second finned heat exchanger-> second cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor;
Pattern 4 for the pattern that singly degreases, its state of a control is: source pump is out of service, opens pressure fan, carries out air circulation flow process;
Described directly-heated type water heating flow process is: water stream channel-> heat storage water tank of running water water inlet-> entering water electromagnetic valve-> water coil heat exchanger-> constant-temperature water valve-> instant heat exchanger;
Described air circulation flow process is: the new wind mixing section-> of kitchen indoor return air-> greasy dirt filter rinsed-> water coil heat exchanger-> the second finned heat exchanger-> pressure fan-> kitchen air supply duct; If need new wind, open new air-valve, outdoor new wind enters new wind mixing section by new air-valve, with degrease after the indoor return air in kitchen mixes after, enter air heat-exchange section and air supply section, by pressure fan to the supplementary new wind in kitchen.
A kind of preferably technical scheme of kitchen heat pump behind restaurant of the present invention, behind the restaurant described in it is characterized in that, kitchen heat pump also comprises variable refrigeration cold air duct, at the end of variable refrigeration cold air duct, is provided with interior air-valve and outer air-valve; The first described finned heat exchanger is placed between interior air-valve and outer air-valve; Described operational mode also comprises pattern 5 and/or pattern 6, wherein:
Pattern 5 is water heating-refrigeration cold wind pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve energising is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;
The refrigerant circulation flow process of pattern 5: E-S mouth-> compressor air suction mouth of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;
Pattern 6 is the hot blast cold wind pattern that heats up-refrigerate, and its state of a control is: the first cross valve is "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with, and the second cross valve is power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is closed, and stops hot water preparing; Pressure fan is opened, and carries out air circulation flow process;
The refrigerant circulation flow process of pattern 6: the air entry of E-S mouth-> compressor of D-C mouth-> the second finned heat exchanger-> the second check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor;
Described refrigeration cold wind circulation process is: the interior air-valve-> heat exchanger blower fan of the variable refrigeration cold air duct of the m-> of kitchen food refrigerating return air inlet-> after the variable refrigeration cold air duct of air-valve-> air inlet-> in heat exchanger blower fan-> the first finned heat exchanger->.
A kind of better technical scheme of kitchen heat pump behind restaurant of the present invention, after it is characterized in that described restaurant, kitchen heat pump also comprises circulating pump, the hot water circuit outlet of described heat storage water tank bottom, by circulating pump, be connected to the water inlet of instant heat exchanger, form the hot water circuit insulation loop of heat storage water tank; Described operational mode also comprises mode 7;
Described mode 7 is hot water thermal insulating-refrigeration cold wind pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve energising is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is closed, and circulating pump is opened, and carries out hot water thermal insulating circulation process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;
The refrigerant circulation flow process of mode 7: the air entry of E-S mouth-> compressor of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;
Described hot water thermal insulating circulation process is: water stream channel-> heat storage water tank of heat storage water tank-> circulating pump-> instant heat exchanger.
A kind of improved technical scheme of kitchen heat pump behind restaurant of the present invention, is characterized in that described Multi-mode refrigeration agent closed circuit switching mechanism also comprises for being switched to the 3rd magnetic valve and the 6th check valve of defrosting mode; After the 3rd described magnetic valve and the 6th check valve are connected in series, be connected in reverse parallel in the two ends of the 3rd check valve, between the coolant channel B mouth of the first finned heat exchanger and the coolant channel B mouth of instant heat exchanger, set up the refrigerant circulation branch road of defrosting mode;
The state of a control of defrosting mode is: the first cross valve and the second cross valve are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve and the second closed electromagnetic valve, the 3rd magnetic valve is opened;
The refrigerant circulation flow process of defrosting mode: C-S mouth-> compressor air suction mouth of D-E mouth-> the first finned heat exchanger-> the first check valve-> three magnetic valve-> six check valve-> instant heat exchanger-> first cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor.
Another object of the present invention is to provide a kind of multi-mode operation control method for kitchen heat pump behind restaurant of the present invention, solves the heat pump multiple-working mode intelligent technical problem of switching in kitchen behind restaurant.The present invention solves the problems of the technologies described above adopted technical scheme:
A control method for kitchen heat pump behind restaurant, controls for the multi-mode operation of kitchen heat pump behind above-mentioned restaurant, it is characterized in that comprising the following steps:
S100: obtain operational mode pre-set parameter, described pre-set parameter comprises water tank water temperature higher limit Txs, water outlet temperature setting value Tss, cistern water level higher limit Wsx, cistern water level lower limit Wxx, cooling desired temperature Tjs, intensification desired temperature Tss and refrigerator desired temperature Tls;
S120: detect the parameter measured value that various operational modes are relevant, described parameter measured value comprises water tank water temperature Tsx, instant heat exchanger leaving water temperature Tcs, cistern water level Wsw, kitchen temperature T cf and refrigerator temperature T lc;
S200: select the operational mode of kitchen heat pump behind restaurant by control panel, if automatic mode goes to step S220; Otherwise kitchen heat pump is switched to the operational mode that control panel is selected behind described restaurant;
S220: compare measured value and the setting value of operational mode parameter, according to the operational mode of kitchen heat pump behind comparative result switching restaurant;
S240: if refrigerator temperature T lc≤refrigerator desired temperature Tls goes to step S300; Otherwise, go to step S360;
S300: if kitchen temperature T cf≤kitchen cooling setting value Tjs goes to step S320; Otherwise, go to step S340;
S320: if cistern water level Wsw < cistern water level higher limit Wsx is switched to operational mode 1 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 3;
S340: if cistern water level Wsw≤cistern water level lower limit Wxx is switched to operational mode 2 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 4;
S360: if cistern water level Wsw >=cistern water level higher limit Wsx goes to step S380; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 5;
S380: the setting value Tss if heat up in temperature T cf < kitchen, kitchen, or water tank water temperature Tsx >=water tank water temperature higher limit Txs, be switched to operational mode 6 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 7.
The invention has the beneficial effects as follows:
1, kitchen heat pump behind restaurant of the present invention, adopt instant-heating-type constant-temperature to heat and heat storage water tank insulation storing mode hot water preparing, can utilize refrigeration and cool-down dehumidification process to produce at any time savings hot water, guaranteeing to cut before the meal to join and clean after the meal the period has enough hot water supplies, effectively solves hot water demand and the nonsynchronous problem of refrigeration cool-down demand; The mode refrigerated dehumidification that adopts large temperature-difference refrigerating to be combined with indoor return air heat recovery, directly drops to high-temperature hot-air in kitchen below 20 degree, and not only effect on moisture extraction is better, more can experience the effect of cold wind cooling in kitchen.
2, the technical scheme that behind restaurant of the present invention, kitchen heat pump adopts direct-heating heat pump water heater, air-treatment case and variable refrigeration cold air duct to combine, air-conditioning, hot water and three systems of kitchen food refrigerating cold wind are organically combined, the Trinity, not only can independent operating but also can support mutually, the energy that heats refrigeration can both fully be fully utilized, and system reaches higher comprehensive operation efficiency;
3, system adopts split-type design, and air-treatment case and variable refrigeration cold air duct can be placed flexibly according to the layout of rear kitchen workplace and refrigerator, adopts wind pipe type air-supply design, cold wind reasonably can be delivered to each place in kitchen.System architecture is simple, and installation requirement is low, but also can reduce the floor space of equipment, saves the space in kitchen, reduces the cost of product.
4, behind restaurant of the present invention, the control method of kitchen heat pump can select to control mode of operation flexibly, realizes high efficiency smart and controls automatic multi mode operation, control flexibly and easily, and environmental protection and energy saving, operational efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of kitchen heat pump behind restaurant of the present invention;
The theory diagram of kitchen heat pump multi-mode operation control device behind Tu2Shi restaurant;
Fig. 3 is the control method flow chart of kitchen heat pump behind restaurant of the present invention.
The label of each parts in above figure: 100-heat pump main frame, 110-compressor, 120-instant heat exchanger, 130-the first finned heat exchanger, 131-heat exchanger blower fan, 141-the first cross valve, 142-the second cross valve, 151-the first magnetic valve, 152-the second magnetic valve, 153-the 3rd magnetic valve, 161-the first expansion valve, 162-the second expansion valve, 171-liquid reservoir, 172-filter, 181～186-first is to the 6th check valve, 200-heat storage water tank, 210-entering water electromagnetic valve, 220-constant-temperature water valve, 230-circulating pump, 300-air-treatment case, 310-greasy dirt filter rinsed, the new air-valve of 320-, 330-water coil heat exchanger, 340-the second finned heat exchanger, 350-pressure fan, the variable refrigeration cold air duct of 400-, air-valve in 410-, the outer air-valve of 420-, 500-control device, 510-operational mode control module, 511-operational mode setup unit, 520-heat pump host computer control module, 521-hot water preparing control module, 522-cistern water level sensor, 523-heat exchanger leaving water temperature sensor, 524-Water in Water Tank temperature sensor, 530-air-treatment case control module, 531-kitchen temperature sensor, 540-refrigeration cold wind control module, temperature sensor between 541-food refrigerating.
The specific embodiment
In order to understand better technique scheme of the present invention, below in conjunction with drawings and Examples, describe in detail further.
Fig. 1 is the structural representation of an embodiment of kitchen heat pump behind restaurant of the present invention, behind restaurant of the present invention, kitchen heat pump is the heating and cooling association system that water heating subsystem, air in kitchen cycle subsystem and rear kitchen refrigeration cold wind subsystem form, comprise heat pump main frame 100, heat storage water tank 200 and control device 500;
As shown in Figure 1, behind described restaurant, kitchen heat pump also comprises air-treatment case 300; Described air-treatment case 300 is comprised of the new wind mixing section, air heat-exchange section and the air supply section that are communicated with successively; The indoor return air entrance of new wind mixing section is provided with greasy dirt filter rinsed 310, and the outdoor new wind entrance of new wind mixing section is provided with new air-valve 320; Air heat-exchange section is provided with water coil heat exchanger 330 and the second finned heat exchanger 340; Air supply section is communicated to the indoor supply air duct in kitchen by pressure fan 350;
Described heat pump main frame 100 comprises compressor 110, instant heat exchanger 120, the first finned heat exchangers 130, the first expansion valve 161, the second expansion valve 162, liquid reservoir 171 and filter 172, and for switching the Multi-mode refrigeration agent closed circuit switching mechanism of unit operational mode; In the embodiment shown in fig. 1, instant heat exchanger 120 is double pipe heat exchanger.
Described Multi-mode refrigeration agent closed circuit switching mechanism comprises the first cross valve 141, the second cross valve 142, the first magnetic valves 151 and the second magnetic valves 152; The D mouth of the first cross valve 141 is connected to the exhaust outlet of compressor 110, and the E mouth of the first cross valve 141 is connected to the D mouth of the second cross valve 142; The S mouth of the S mouth of the first cross valve 141 and the second cross valve 142 is parallel-connected to the air entry of compressor 110; The C mouth of the first cross valve 141 is connected to the coolant channel A mouth of instant heat exchanger 120, and the C mouth of the second cross valve 142 is connected to the coolant channel A mouth of the second finned heat exchanger 340; The E mouth of the second cross valve 142 is connected to the coolant channel A mouth of the first finned heat exchanger 130, the coolant channel B mouth of the first finned heat exchanger 130, the second finned heat exchanger 340 and instant heat exchanger 120, by the first to the 3rd check valve 181-183, be connected to reservoir 171 respectively, then by filter 172, be connected to the entrance of the first magnetic valve 151 and the second magnetic valve 152; The outlet of the first magnetic valve 151 is connected to the coolant channel B mouth of the second finned heat exchanger 340 successively by the 4th check valve 184 and the first expansion valve 161; The outlet of the second magnetic valve 152 is connected to the coolant channel B mouth of the first finned heat exchanger 130 successively by the 5th check valve 185 and the second expansion valve 162;
Running water inlet pipeline is connected to the water inlet of water coil heat exchanger 330 by entering water electromagnetic valve 210, the delivery port of water coil heat exchanger 330 is connected to the water inlet of instant heat exchanger 120 by constant-temperature water valve 220, the hot water outlet of instant heat exchanger 120 is connected to the hot water inlet on heat storage water tank 200 tops, forms Instant heating type hot water heat exchanging pipe;
Described control device 500, by Multi-mode refrigeration agent closed circuit switching mechanism, changes the circulating path of cold-producing medium, and behind control restaurant, kitchen heat pump is according to default operational mode operation.
According to an embodiment of kitchen heat pump behind restaurant of the present invention, described operational mode at least comprises that pattern 1 is to one of pattern 4, wherein:
Pattern 1 is water heating-refrigeration mode, and its state of a control is: the first cross valve 141 and the second cross valve 142 are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve 151 is opened, and the second magnetic valve 152 cuts out; Entering water electromagnetic valve 210 is opened, and carries out directly-heated type water heating flow process; Pressure fan 350 is opened, and carries out air circulation flow process;
The refrigerant circulation flow process of pattern 1: the air entry of the E-S mouth-> compressor 110 of C-D mouth-> first cross valve 141 of coolant channel (A-B mouth)-> the 3rd check valve 183-> liquid reservoir 171-> filter 172-> first magnetic valve 151-> the 4th check valve 184-> first expansion valve 161-> second finned heat exchanger 340-> second cross valve 142 of the D-C mouth-> instant heat exchanger 120 of exhaust outlet-> first cross valve 141 of compressor 110;
At pattern 1 state, the indoor return air in kitchen is through greasy dirt filter rinsed 310, removal is out airborne greasy dirt and dust from kitchen, if kitchen needs new wind, new air-valve 320 is opened, and the aperture of new air-valve can arrange voluntarily according to the demand of resh air requirement, after wind after greasy dirt cleaning and filtering and new wind are mixed, arrive water coil heat exchanger 330, hot blast and running water carry out in water coil, carrying out heat exchange, thereby reach transfer of heat, freely lower the temperature and heat up.Mixing wind after cooling is again to the second finned heat exchanger 340.Under this pattern, the second finned heat exchanger 340 is operated in evaporator stage, airborne moisture is condensed into liquid state by the low-temperature refrigerant in evaporimeter, in water-supporting disc from evaporimeter, discharge, from the second finned heat exchanger 340 aerial temperature and humidity out, all significantly reduce, becoming air-out dry-bulb temperature is the cold wind below 20 degree, by pressure fan 350, cold wind is delivered to kitchen workplace indoor, reach the object of refrigerated dehumidification.Running water arrives water coil heat exchanger 330 by entering water electromagnetic valve 210, after the interior return air temperature of absorption chamber, arrive constant-temperature water valve 220, constant-temperature water valve 220 is by detecting the leaving water temperature Tcs of instant heat exchanger 120, with the water outlet temperature setting value Tss contrast arranging, automatic regulating water flow amount, thus guarantee that leaving water temperature reaches the leaving water temperature of setting.Water by constant-temperature water valve 220 adjust fluxes enters instant heat exchanger 120, in instant heat exchanger 120, absorb the heat in the cold-producing medium of the HTHP that compressor 110 discharges, from instant heat exchanger 120 outlets, be directly discharged into heat storage water tank 200, for hot water demand, use.When the hot water amount in heat storage water tank 200 reaches the water yield of heat storage water tank demand, automatically close entering water electromagnetic valve 210, water heating process finishes.
Pattern 2 is single water heating pattern, and its state of a control is: the first cross valve 141 and the second cross valve 142 are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve 151 cuts out, and the second magnetic valve 152 is opened; Heat exchanger blower fan 131 starts; Entering water electromagnetic valve 210 is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan 350, carrying out air circulation flow process; At pattern 2 states, kitchen does not need cold wind, and the first finned heat exchanger 130 is operated in evaporator stage, sets up outdoor air circulate by heat exchanger blower fan 131, and cold-producing medium is drawn the heat energy of hot water preparing from outdoor air by the first finned heat exchanger 130.
The refrigerant circulation flow process of pattern 2: E-S mouth-> compressor 110 air entries of coolant channel-> the 3rd check valve 183-> liquid reservoir 171-> filter 172-> second magnetic valve 152-> the 5th check valve 185-> second expansion valve 162-> first finned heat exchanger 130-> second cross valve 142 of D-C mouth-> instant heat exchanger 120 of exhaust outlet-> first cross valve 141 of compressor 110;
Mode 3 is single refrigeration mode, and its state of a control is: the first cross valve 141 and the second cross valve 142 are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve 151 is opened, and the second magnetic valve 152 cuts out; Heat exchanger blower fan 131 starts; Entering water electromagnetic valve 210 is closed, and stops hot water preparing; Pressure fan 350 is opened, and carries out air circulation flow process; At mode 3 state, do not need water heating, the first finned heat exchanger 130 is operated in condenser state, sets up outdoor air circulate by heat exchanger blower fan 131, and the heat that cold-producing medium produces refrigeration by the first finned heat exchanger 130 is discharged in air.
The refrigerant circulation flow process of mode 3: the air entry of the C-S mouth-> compressor 110 of D-E mouth-> first finned heat exchanger 130-> first check valve 181-> liquid reservoir 171-> filter 172-> first magnetic valve 151-> the 4th check valve 184-> first expansion valve 161-> second finned heat exchanger 340-> second cross valve 142 of D-E mouth-> second cross valve 142 of exhaust outlet-> first cross valve 141 of compressor 110;
Pattern 4 for the pattern that singly degreases, its state of a control is: source pump is out of service, only opens pressure fan 350, carries out air circulation flow process, carries out air in kitchen circulation and degreases;
Described directly-heated type water heating flow process is: water stream channel-> heat storage water tank 200 of running water water inlet-> entering water electromagnetic valve 210-> water coil heat exchanger 330-> constant-temperature water valve 220-> instant heat exchanger 120;
Described air circulation flow process is: the new wind mixing section-> of kitchen indoor return air-> greasy dirt filter rinsed 310-> water coil heat exchanger 330-> the second finned heat exchanger 340-> pressure fan 350-> kitchen air supply duct; If need new wind, open new air-valve 320, outdoor new wind enters new wind mixing section by new air-valve 320, with degrease after the indoor return air in kitchen mixes after, enter air heat-exchange section and air supply section, by pressure fan 350 to the supplementary new wind in kitchen.
Behind the restaurant of the present invention shown in Fig. 1, in the embodiment of kitchen heat pump, behind described restaurant, kitchen heat pump also comprises variable refrigeration cold air duct 400, at the end of variable refrigeration cold air duct 400, is provided with interior air-valve 410 and outer air-valve 420; The first described finned heat exchanger 130 is placed between interior air-valve 410 and outer air-valve 420; Behind described restaurant, heat pump operational mode in kitchen is pattern 1 during to pattern 4, and interior air-valve 410 cuts out, and outer air-valve 420 is opened; When heat exchanger blower fan 131 starts, the first finned heat exchanger 130 is set up outdoor air by outer air-valve 420 and is circulated; In water heating-refrigeration cold wind pattern or the hot blast cold wind pattern that heats up-refrigerate, the cold that heat exchanger blower fan 131 produces the first finned heat exchanger 130, is sent between the food refrigerating of rear kitchen by interior air-valve 410, sets up food materials preservation by low temperature storage condition; At single refrigeration mode, the heat that heat exchanger blower fan 131 produces the first finned heat exchanger 130, is discharged in air by outer air-valve 420.
According to this embodiment, described operational mode also comprises pattern 5 and/or pattern 6, wherein:
Pattern 5 is water heating-refrigeration cold wind pattern, and its state of a control is: the first cross valve 141 and the second cross valve 142 are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve 151 cuts out, and the second magnetic valve 152 energisings are opened; Interior air-valve 410 is opened, and outer air-valve 420 cuts out, and heat exchanger blower fan 131 starts, and carries out refrigeration cold wind circulation process; Entering water electromagnetic valve 210 is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan 350, carrying out air circulation flow process;
The refrigerant circulation flow process of pattern 5: E-S mouth-> compressor 110 air entries of coolant channel-> the 3rd check valve 183-> liquid reservoir 171-> filter 172-> second magnetic valve 152-> the 5th check valve 185-> second expansion valve 162-> first finned heat exchanger 130-> second cross valve 142 of D-C mouth-> instant heat exchanger 120 of exhaust outlet-> first cross valve 141 of compressor 110;
Pattern 6 is the hot blast cold wind pattern that heats up-refrigerate, and its state of a control is: the first cross valve 141 is "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with, and the second cross valve 142 be power failure state, and its D-C mouth is communicated with, the connection of E-S mouth; The first magnetic valve 151 cuts out, and the second magnetic valve 152 is opened; Interior air-valve 410 is opened, and outer air-valve 420 cuts out, and heat exchanger blower fan 131 starts, and carries out refrigeration cold wind circulation process; Entering water electromagnetic valve 210 is closed, and stops hot water preparing; Pressure fan 350 is opened, and carries out air circulation flow process;
The refrigerant circulation flow process of pattern 6: E-S mouth-> compressor 110 air entry of D-C mouth-> second finned heat exchanger 340-> second check valve 182-> liquid reservoir 171-> filter 172-> second magnetic valve 152-> the 5th check valve 185-> second expansion valve 162-> first finned heat exchanger 130-> second cross valve 142 of D-E mouth-> second cross valve 142 of exhaust outlet-> first cross valve 141 of compressor 110;
Described refrigeration cold wind circulation process is: the interior air-valve 410-> heat exchanger blower fan 130 of the return air inlet-> of the variable refrigeration cold air duct 400 of the m-> of kitchen food refrigerating after the air inlet-> of the variable refrigeration cold air duct 400 of air-valve 410-> in heat exchanger blower fan 131-> the first finned heat exchanger 130->.The cold that heat exchanger blower fan 131 produces the first finned heat exchanger 130, by interior air-valve 410 and variable refrigeration cold air duct 400, is sent between the food refrigerating of rear kitchen.
In the embodiment shown in fig. 1, behind described restaurant, kitchen heat pump also comprises circulating pump 230, the hot water circuit of described heat storage water tank 200 bottoms exports, and is connected to the water inlet of instant heat exchanger 120 by circulating pump 230, forms the hot water circuit insulation loop of heat storage water tank;
In this embodiment, described operational mode also comprises mode 7, and mode 7 is hot water thermal insulating-refrigeration cold wind pattern, and its state of a control is: the first cross valve 141 and the second cross valve 142 are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve 151 cuts out, and the second magnetic valve 152 energisings are opened; Interior air-valve 410 is opened, and outer air-valve 420 cuts out, and heat exchanger blower fan 131 starts, and carries out refrigeration cold wind circulation process; Entering water electromagnetic valve 210 is closed, and circulating pump 230 is opened, and carries out hot water thermal insulating circulation process; If desired degrease or supplement new wind, opening pressure fan 350, carrying out air circulation flow process;
The refrigerant circulation flow process of mode 7: E-S mouth-> compressor 110 air entries of coolant channel-> the 3rd check valve 183-> liquid reservoir 171-> filter 172-> second magnetic valve 152-> the 5th check valve 185-> second expansion valve 162-> first finned heat exchanger 130-> second cross valve 142 of D-C mouth-> instant heat exchanger 120 of exhaust outlet-> first cross valve 141 of compressor 110;
Described hot water thermal insulating circulation process is: water stream channel-> heat storage water tank 200 of heat storage water tank 200-> circulating pump 230-> instant heat exchanger 120.
In the embodiment shown in fig. 1, described Multi-mode refrigeration agent closed circuit switching mechanism also comprises for being switched to the 3rd magnetic valve 153 and the 6th check valve 186 of defrosting mode; After the 3rd magnetic valve 153 and the 6th check valve 186 are connected in series, be connected in reverse parallel in the two ends of the 3rd check valve 183, between the coolant channel B mouth of the first finned heat exchanger 130 and the coolant channel B mouth of instant heat exchanger 120, set up the refrigerant circulation branch road of defrosting mode; When heat pump main frame 100 is usingd the first finned heat exchanger 130 during as evaporator operation, if there is frosting in the first finned heat exchanger 130, behind described restaurant, kitchen heat pump is switched in short-term defrosting mode and carries out defrost operation, and defrosting finishes the original operational mode of rear auto-returned.
The state of a control of defrosting mode is: the first cross valve 141 and the second cross valve 142 are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve 151 and the second magnetic valve 152 are closed, and the 3rd magnetic valve 153 is opened;
The refrigerant circulation flow process of defrosting mode: C-S mouth-> compressor 110 air entries of D-E mouth-> first finned heat exchanger 130-> first check valve 181-> the 3rd magnetic valve 153-> the 6th check valve 186-> instant heat exchanger 120-> first cross valve 141 of D-E mouth-> second cross valve 142 of exhaust outlet-> first cross valve 141 of compressor 110.
Fig. 2 is an embodiment for the control device 500 of kitchen heat pump multi-mode operation control behind restaurant of the present invention, comprise operational mode control module 510, operational mode setup unit 511, heat pump host computer control module 520, hot water preparing control module 521, air-treatment case control module 530 and refrigeration cold wind control module 540; Described operational mode control module 510 is connected to operational mode setup unit 511 by wired or wireless mode, by operational mode setup unit 511, obtains operational mode pre-set parameter, and accepts user's operational mode selection; Described hot water preparing control module 521 is connected to cistern water level sensor 522, heat exchanger leaving water temperature sensor 523, Water in Water Tank temperature sensor 524 and entering water electromagnetic valve 210; Described air-treatment case control module 530 is connected to kitchen temperature sensor 531 and pressure fan 350; Described refrigeration cold wind control module 540 is connected to temperature sensor 541 between food refrigerating, interior air-valve 410, outer air-valve 420 and heat exchanger blower fan 131; Operational mode control module 510 is connected to Multi-mode refrigeration agent closed circuit switching mechanism by heat pump host computer control module 520, by controlling the first cross valve 141, the second cross valve 142, the first magnetic valve 151 and the second magnetic valve 152, the operational mode of kitchen heat pump behind switching restaurant; Operational mode control module 510 is connected to hot water preparing control module 521, air-treatment case control module 530 and refrigeration cold wind control module 540, according to present mode of operation, controls entering water electromagnetic valve 210, interior air-valve 410, outer air-valve 420, heat exchanger blower fan 131 and pressure fan 350.
Fig. 3 is for the control flow chart of an embodiment of the multi-mode operation control method of kitchen heat pump behind restaurant of the present invention, comprises the following steps:
S100: operational mode setup unit obtains operational mode pre-set parameter, described pre-set parameter comprises water tank water temperature higher limit Txs, water outlet temperature setting value Tss, cistern water level higher limit Wsx, cistern water level lower limit Wxx, cooling desired temperature Tjs, intensification desired temperature Tss and refrigerator desired temperature Tls;
S120: detect the parameter measured value that various operational modes are relevant, described parameter measured value comprises water tank water temperature Tsx, instant heat exchanger leaving water temperature Tcs, cistern water level Wsw, kitchen temperature T cf and refrigerator temperature T lc;
S200: select the operational mode of kitchen heat pump behind restaurant by control panel, if automatic mode goes to step S220; Otherwise kitchen heat pump is switched to the operational mode that control panel is selected behind described restaurant;
S220: operational mode control module is measured value and the setting value of operational mode parameter relatively, according to the operational mode of kitchen heat pump behind comparative result switching restaurant;
S240: if refrigerator temperature T lc≤refrigerator desired temperature Tls goes to step S300; Otherwise, go to step S360;
S300: if kitchen temperature T cf≤kitchen cooling setting value Tjs goes to step S320; Otherwise, go to step S340;
S320: if cistern water level Wsw < cistern water level higher limit Wsx is switched to operational mode 1 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 3;
S340: if cistern water level Wsw≤cistern water level lower limit Wxx is switched to operational mode 2 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 4;
S360: if cistern water level Wsw >=cistern water level higher limit Wsx goes to step S380; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 5;
S380: the setting value Tss if heat up in temperature T cf < kitchen, kitchen, or water tank water temperature Tsx >=water tank water temperature higher limit Txs, be switched to operational mode 6 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 7.
Those of ordinary skill in the art will be appreciated that; above embodiment is only for technical scheme of the present invention is described; and be not used as limitation of the invention; any variation of the above embodiment being done based on connotation of the present invention, modification, all will drop in the protection domain of claim of the present invention.
Claims (6)
- Kitchen heat pump behind 1.Yi Zhong restaurant, comprises heat pump main frame, and heat storage water tank and control device, is characterized in that:Behind described restaurant, kitchen heat pump also comprises air-treatment case, and described air-treatment case is comprised of the new wind mixing section, air heat-exchange section and the air supply section that are communicated with successively; The indoor return air entrance of new wind mixing section is provided with greasy dirt filter rinsed, and the outdoor new wind entrance of new wind mixing section is provided with new air-valve; Air heat-exchange section is provided with water coil heat exchanger and the second finned heat exchanger; Air supply section is communicated to the indoor supply air duct in kitchen by pressure fan;Described heat pump main frame comprises compressor, instant heat exchanger, and the first finned heat exchanger, the first expansion valve, the second expansion valve, liquid reservoir and filter, and for switching the Multi-mode refrigeration agent closed circuit switching mechanism of unit operational mode;Described Multi-mode refrigeration agent closed circuit switching mechanism comprises the first cross valve, the second cross valve, the first magnetic valve and the second magnetic valve; The D mouth of the first cross valve is connected to the exhaust outlet of compressor, and the E mouth of the first cross valve is connected to the D mouth of the second cross valve; The S mouth of the first cross valve and the S mouth of the second cross valve are parallel-connected to the air entry of compressor; The C mouth of the first cross valve is connected to the coolant channel A mouth of instant heat exchanger, and the C mouth of the second cross valve is connected to the coolant channel A mouth of the second finned heat exchanger, and the E mouth of the second cross valve is connected to the coolant channel A mouth of the first finned heat exchanger; The coolant channel B mouth of the first finned heat exchanger, the second finned heat exchanger and instant heat exchanger, is connected to reservoir by the first to the 3rd check valve respectively, then by filter, is connected to the entrance of the first magnetic valve and the second magnetic valve; The outlet of the first magnetic valve is connected to the coolant channel B mouth of the second finned heat exchanger successively by the 4th check valve and the first expansion valve; The outlet of the second magnetic valve is connected to the coolant channel B mouth of the first finned heat exchanger successively by the 5th check valve and the second expansion valve;Running water inlet pipeline is connected to the water inlet of water coil heat exchanger by entering water electromagnetic valve, the delivery port of water coil heat exchanger is connected to the water inlet of instant heat exchanger by constant-temperature water valve, the hot water outlet of instant heat exchanger is connected to the hot water inlet on heat storage water tank top, forms Instant heating type hot water heat exchanging pipe;Described control device, by Multi-mode refrigeration agent closed circuit switching mechanism, changes the circulating path of cold-producing medium, and behind control restaurant, kitchen heat pump is according to default operational mode operation.
- 2. kitchen heat pump behind restaurant according to claim 1, is characterized in that described operational mode at least comprises that pattern 1 arrives one of pattern 4, wherein:Pattern 1 is water heating-refrigeration mode, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first magnetic valve is opened, the second closed electromagnetic valve; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; Pressure fan is opened, and carries out air circulation flow process;The refrigerant circulation flow process of pattern 1: the air entry of E-S mouth-> compressor of C-D mouth-> first cross valve of coolant channel-> three check valve-> liquid reservoir-> filter-> the first magnetic valve-> four check valve-> the first expansion valve-> the second finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;Pattern 2 is single water heating pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve is opened; Heat exchanger fan starting; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;The refrigerant circulation flow process of pattern 2: E-S mouth-> compressor air suction mouth of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;Mode 3 is single refrigeration mode, and its state of a control is: the first cross valve and the second cross valve are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve is opened, the second closed electromagnetic valve; Heat exchanger fan starting; Entering water electromagnetic valve is closed, and stops hot water preparing; Pressure fan is opened, and carries out air circulation flow process;The refrigerant circulation flow process of mode 3: the air entry of C-S mouth-> compressor of D-E mouth-> the first finned heat exchanger-> the first check valve-> liquid reservoir-> filter-> the first magnetic valve-> four check valve-> the first expansion valve-> the second finned heat exchanger-> second cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor;Pattern 4 for the pattern that singly degreases, its state of a control is: source pump is out of service, opens pressure fan, carries out air circulation flow process;Described directly-heated type water heating flow process is: water stream channel-> heat storage water tank of running water water inlet-> entering water electromagnetic valve-> water coil heat exchanger-> constant-temperature water valve-> instant heat exchanger;Described air circulation flow process is: the new wind mixing section-> of kitchen indoor return air-> greasy dirt filter rinsed-> water coil heat exchanger-> the second finned heat exchanger-> pressure fan-> kitchen air supply duct; If need new wind, open new air-valve, outdoor new wind enters new wind mixing section by new air-valve, with degrease after the indoor return air in kitchen mixes after, enter air heat-exchange section and air supply section, by pressure fan to the supplementary new wind in kitchen.
- 3. kitchen heat pump behind restaurant according to claim 2, it is characterized in that described restaurant after kitchen heat pump also comprise variable refrigeration cold air duct, at the end of variable refrigeration cold air duct, be provided with interior air-valve and outer air-valve; The first described finned heat exchanger is placed between interior air-valve and outer air-valve; Described operational mode also comprises pattern 5 and/or pattern 6;Described pattern 5 is water heating-refrigeration cold wind pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve energising is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is opened, and carries out directly-heated type water heating flow process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;The refrigerant circulation flow process of pattern 5: E-S mouth-> compressor air suction mouth of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;Described pattern 6 is the hot blast cold wind pattern that heats up-refrigerate, and its state of a control is: the first cross valve is "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with, and the second cross valve is power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is closed, and stops hot water preparing; Pressure fan is opened, and carries out air circulation flow process;The refrigerant circulation flow process of pattern 6: the air entry of E-S mouth-> compressor of D-C mouth-> the second finned heat exchanger-> the second check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor;Described refrigeration cold wind circulation process is: the interior air-valve-> heat exchanger blower fan of the variable refrigeration cold air duct of the m-> of kitchen food refrigerating return air inlet-> after the variable refrigeration cold air duct of air-valve-> air inlet-> in heat exchanger blower fan-> the first finned heat exchanger->.
- 4. kitchen heat pump behind restaurant according to claim 3, after it is characterized in that described restaurant, kitchen heat pump also comprises circulating pump, the hot water circuit outlet of described heat storage water tank bottom, by circulating pump, be connected to the water inlet of instant heat exchanger, form the hot water circuit insulation loop of heat storage water tank; Described operational mode also comprises mode 7;Described mode 7 is hot water thermal insulating-refrigeration cold wind pattern, and its state of a control is: the first cross valve and the second cross valve are power failure state, and its D-C mouth is communicated with, and E-S mouth is communicated with; The first closed electromagnetic valve, the second magnetic valve energising is opened; Interior air-valve is opened, and outer air-valve cuts out, and heat exchanger fan starting is carried out refrigeration cold wind circulation process; Entering water electromagnetic valve is closed, and circulating pump is opened, and carries out hot water thermal insulating circulation process; If desired degrease or supplement new wind, opening pressure fan, carrying out air circulation flow process;The refrigerant circulation flow process of mode 7: the air entry of E-S mouth-> compressor of coolant channel-> three check valve-> liquid reservoir-> filter-> the second magnetic valve-> five check valve-> the second expansion valve-> the first finned heat exchanger-> second cross valve of D-C mouth-> instant heat exchanger of exhaust outlet-> first cross valve of compressor;Described hot water thermal insulating circulation process is: water stream channel-> heat storage water tank of heat storage water tank-> circulating pump-> instant heat exchanger.
- 5. according to kitchen heat pump behind the restaurant described in arbitrary claim of claim 1-4, it is characterized in that described Multi-mode refrigeration agent closed circuit switching mechanism also comprises for being switched to the 3rd magnetic valve and the 6th check valve of defrosting mode; After the 3rd described magnetic valve and the 6th check valve are connected in series, be connected in reverse parallel in the two ends of the 3rd check valve, between the coolant channel B mouth of the first finned heat exchanger and the coolant channel B mouth of instant heat exchanger, set up the refrigerant circulation branch road of defrosting mode;The state of a control of defrosting mode is: the first cross valve and the second cross valve are "on" position, and its D-E mouth is communicated with, and C-S mouth is communicated with; The first magnetic valve and the second closed electromagnetic valve, the 3rd magnetic valve is opened;The refrigerant circulation flow process of defrosting mode: C-S mouth-> compressor air suction mouth of D-E mouth-> the first finned heat exchanger-> the first check valve-> three magnetic valve-> six check valve-> instant heat exchanger-> first cross valve of D-E mouth-> second cross valve of exhaust outlet-> first cross valve of compressor.
- The control method of kitchen heat pump behind 6.Yi Zhong restaurant, controls for the multi-mode operation of kitchen heat pump behind restaurant claimed in claim 4, it is characterized in that comprising the following steps:S100: obtain operational mode pre-set parameter, described pre-set parameter comprises water tank water temperature higher limit Txs, water outlet temperature setting value Tss, cistern water level higher limit Wsx, cistern water level lower limit Wxx, cooling desired temperature Tjs, intensification desired temperature Tss and refrigerator desired temperature Tls;S120: detect the parameter measured value that various operational modes are relevant, described parameter measured value comprises water tank water temperature Tsx, instant heat exchanger leaving water temperature Tcs, cistern water level Wsw, kitchen temperature T cf and refrigerator temperature T lc;S200: select the operational mode of kitchen heat pump behind restaurant by control panel, if automatic mode goes to stepS220; Otherwise kitchen heat pump is switched to the operational mode that control panel is selected behind described restaurant;S220: compare measured value and the setting value of operational mode parameter, according to the operational mode of kitchen heat pump behind comparative result switching restaurant;S240: if refrigerator temperature T lc≤refrigerator desired temperature Tls goes to step S300; Otherwise, go to step S360;S300: if kitchen temperature T cf≤kitchen cooling setting value Tjs goes to step S320; Otherwise, go to step S340;S320: if cistern water level Wsw < cistern water level higher limit Wsx is switched to operational mode 1 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 3;S340: if cistern water level Wsw≤cistern water level lower limit Wxx is switched to operational mode 2 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 4;S360: if cistern water level Wsw >=cistern water level higher limit Wsx goes to step S380; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 5;S380: the setting value Tss if heat up in temperature T cf < kitchen, kitchen, or water tank water temperature Tsx >=water tank water temperature higher limit Txs, be switched to operational mode 6 by kitchen heat pump behind restaurant; Otherwise, kitchen heat pump behind restaurant is switched to operational mode 7.
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